diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..f3d901b
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,106 @@
+cmake_minimum_required(VERSION 3.14)
+
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose type of build (Debug or Release)")
+endif(NOT CMAKE_BUILD_TYPE)
+
+project(SPNV VERSION 0.1.0 LANGUAGES CXX)
+
+set(EXECUTABLE_NAME ${PROJECT_NAME})
+
+include(GNUInstallDirs)
+include(CheckPIESupported)
+
+check_pie_supported()
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+set(BUILD_SHARED_LIBS ON)
+
+set(BUILD_DOCUMENTATION 0 CACHE BOOL "Build documentation with Doxygen.")
+
+if(BUILD_DOCUMENTATION)
+    find_package(Doxygen)
+endif()
+
+find_package(SFML 2.5 COMPONENTS graphics window system REQUIRED)
+
+set(FILENAMES
+    panoramawindow
+    projector
+    scenemetadata
+    )
+set(FILENAMES_hdOnl
+    version
+    )
+
+foreach(filename ${FILENAMES})
+    set(SOURCES "${SOURCES}" "${PROJECT_SOURCE_DIR}/src/${filename}.cpp")
+endforeach(filename)
+
+foreach(filename ${FILENAMES})
+    set(HEADERS "${HEADERS}" "${filename}.h")
+    configure_file("${PROJECT_SOURCE_DIR}/src/${filename}.h" "${PROJECT_BINARY_DIR}/include/${filename}.h" COPYONLY)
+endforeach(filename)
+
+foreach(filename ${FILENAMES_hdOnl})
+    set(HEADERS "${HEADERS}" "${filename}.h")
+    configure_file("${PROJECT_SOURCE_DIR}/src/${filename}.h" "${PROJECT_BINARY_DIR}/include/${filename}.h" COPYONLY)
+endforeach(filename)
+
+configure_file("${PROJECT_SOURCE_DIR}/LICENSE" "${PROJECT_BINARY_DIR}/LICENSE" COPYONLY)
+
+set(LIB_SOURCES "${SOURCES}")
+set(SOURCES "${SOURCES}" "${PROJECT_SOURCE_DIR}/src/main.cpp")
+
+add_executable("${EXECUTABLE_NAME}-bin" ${SOURCES})
+add_library("${EXECUTABLE_NAME}-lib" ${LIB_SOURCES})
+
+set_target_properties("${EXECUTABLE_NAME}-bin" "${EXECUTABLE_NAME}-lib" PROPERTIES OUTPUT_NAME ${EXECUTABLE_NAME}
+                                                                                   POSITION_INDEPENDENT_CODE ON)
+set_target_properties("${EXECUTABLE_NAME}-lib" PROPERTIES VERSION ${PROJECT_VERSION})
+
+target_link_libraries("${EXECUTABLE_NAME}-bin" sfml-graphics sfml-window sfml-system)
+target_link_libraries("${EXECUTABLE_NAME}-lib" sfml-graphics sfml-window sfml-system)
+
+include_directories("${PROJECT_BINARY_DIR}/include")
+include_directories(${SFML_INCLUDE_DIR})
+
+set(CMAKE_CXX_FLAGS_RELEASE "" CACHE STRING "" FORCE)
+set(CMAKE_CXX_FLAGS_DEBUG "" CACHE STRING "" FORCE)
+set(CMAKE_EXE_LINKER_FLAGS "" CACHE STRING "" FORCE)
+
+set(CXX_FLAGS_RELEASE "-pipe -O2 -D_FORTIFY_SOURCE=2 -fstack-protector-strong -Wall -Wextra"
+        CACHE STRING "Flags used by the compiler for release builds.")
+set(CXX_FLAGS_DEBUG "-pipe -g -Og -fstack-protector-strong -Wall -Wextra"
+        CACHE STRING "Flags used by the compiler for debug builds.")
+set(LINKER_FLAGS_RELEASE "-Wl,-z,relro,-z,now"
+        CACHE STRING "Some flags used by the linker for release builds.")
+set(LINKER_FLAGS_DEBUG "-Wl,-z,relro,-z,now"
+        CACHE STRING "Some flags used by the linker for debug builds.")
+
+set(CMAKE_CXX_FLAGS_RELEASE "${CXX_FLAGS_RELEASE}")
+set(CMAKE_CXX_FLAGS_DEBUG "${CXX_FLAGS_DEBUG}")
+set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${LINKER_FLAGS_RELEASE}")
+set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${LINKER_FLAGS_DEBUG}")
+set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${LINKER_FLAGS_RELEASE}")
+set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${LINKER_FLAGS_DEBUG}")
+
+if(BUILD_DOCUMENTATION AND DOXYGEN_FOUND)
+  set(doxyfile_in "${PROJECT_SOURCE_DIR}/doc/Doxyfile.in")
+  set(doxyfile "${PROJECT_BINARY_DIR}/Doxyfile")
+  set(TEMPLATE_DIR "${PROJECT_SOURCE_DIR}/doc/template")
+  set(SRC_DIR "${PROJECT_SOURCE_DIR}/src")
+  configure_file("${doxyfile_in}" "${doxyfile}" @ONLY)
+  add_custom_target(Documentation ALL ${DOXYGEN_EXECUTABLE} "${doxyfile}" WORKING_DIRECTORY "${PROJECT_BINARY_DIR}" VERBATIM)
+endif()
+
+install(TARGETS "${EXECUTABLE_NAME}-bin" RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+install(TARGETS "${EXECUTABLE_NAME}-lib" LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
+install(DIRECTORY "${PROJECT_BINARY_DIR}/include/" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}")
+install(FILES "${PROJECT_BINARY_DIR}/LICENSE" DESTINATION "${CMAKE_INSTALL_DOCDIR}")
+if(BUILD_DOCUMENTATION AND DOXYGEN_FOUND)
+    install(DIRECTORY "${PROJECT_BINARY_DIR}/doc/" DESTINATION "${CMAKE_INSTALL_DOCDIR}")
+endif()
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..be3f7b2
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+  An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals.  This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU Affero General Public License.
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+works, such as semiconductor masks.
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+
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+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
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+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
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+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
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+not convey it at all.  For example, if you agree to terms that obligate you
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+the Program, the only way you could satisfy both those terms and this
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+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
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+
+  Notwithstanding any other provision of this License, you have
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+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
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+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
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+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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+  16. Limitation of Liability.
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
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+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.
diff --git a/README b/README
new file mode 100644
index 0000000..c1ae3f1
--- /dev/null
+++ b/README
@@ -0,0 +1,21 @@
+SPNV, a simple panorama viewer for Hugin panoramas.
+Copyright (C) 2022 M. Frohne
+
+SPNV is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published
+by the Free Software Foundation, either version 3 of the License,
+or (at your option) any later version.
+
+SPNV is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+See the GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with SPNV. If not, see <https://www.gnu.org/licenses/>.
+
+
+###########################################################################
+
+
+For more information please see the file 'README.md'.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7c84be5
--- /dev/null
+++ b/README.md
@@ -0,0 +1,59 @@
+# SPNV
+
+SPNV is a simple viewer for panorama pictures that were created with [Hugin](https://hugin.sourceforge.io/).
+It uses information from the Hugin project files to properly display the panorama scenes on screen
+and to identify and optionally center the scenes' horizon lines. Pictures of two different panorama
+projection types, either the central cylindrical or the equirectangular projection, can be displayed.  
+
+The idea behind SPNV was that it shall properly display panorama pictures in the most typically
+used projections, regardless of a possibly asymmetric crop, and that it shall be quite simple
+(in terms of a basic functionality and a simple user interface as well as in terms of a well
+structured and documented program code). SPNV shall also not use OpenGL directly and therefore
+the SFML library is used to display the panorama scenes from explicitly computed two-dimensional
+projections of the respectively current view. While this approach may indeed imply a suboptimal
+performance the actual performance of SPNV appears to be sufficient for being usable.
+
+## Usage
+
+For each panorama picture there must be a corresponding `.pnv` file in the same directory for loading
+the required meta data (same file name except for extension, i.e. `panorama-1.jpg` needs `panorama-1.pnv`).
+The `.pnv` file can be created using the Hugin project file as input by running one of the following commands:
+
+    SPNV picture-filename -p hugin-project-filename
+    SPNV picture-filename --pto=hugin-project-filename
+
+A panorama picture with an existing `.pnv` file can then be shown with SPNV either by
+opening that picture with SPNV from your desktop environment or by directly calling
+
+    SPNV picture-filename
+
+from the command line.  
+
+Note that the supported image formats are restricted to the ones supported by SFML,
+which includes JPEG and PNG but does not include TIFF, for instance.
+
+## Build
+
+Building the project can be configured with [CMake](https://cmake.org/).  
+
+Requires [SFML](https://github.com/SFML/SFML).  
+
+Notes:
+- Building the documentation requires [Doxygen](https://github.com/doxygen/doxygen) (optional).
+
+## License information
+
+Copyright (C) 2022 M. Frohne  
+
+SPNV is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published
+by the Free Software Foundation, either version 3 of the License,
+or (at your option) any later version.  
+
+SPNV is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+See the GNU Affero General Public License for more details.  
+
+You should have received a copy of the GNU Affero General Public License
+along with SPNV. If not, see <https://www.gnu.org/licenses/>.
diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
new file mode 100644
index 0000000..b6f6a5d
--- /dev/null
+++ b/doc/Doxyfile.in
@@ -0,0 +1,2659 @@
+# Doxyfile 1.9.3
+
+# This file describes the settings to be used by the documentation system
+# doxygen (www.doxygen.org) for a project.
+#
+# All text after a double hash (##) is considered a comment and is placed in
+# front of the TAG it is preceding.
+#
+# All text after a single hash (#) is considered a comment and will be ignored.
+# The format is:
+# TAG = value [value, ...]
+# For lists, items can also be appended using:
+# TAG += value [value, ...]
+# Values that contain spaces should be placed between quotes (\" \").
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+
+# This tag specifies the encoding used for all characters in the configuration
+# file that follow. The default is UTF-8 which is also the encoding used for all
+# text before the first occurrence of this tag. Doxygen uses libiconv (or the
+# iconv built into libc) for the transcoding. See
+# https://www.gnu.org/software/libiconv/ for the list of possible encodings.
+# The default value is: UTF-8.
+
+DOXYFILE_ENCODING      = UTF-8
+
+# The PROJECT_NAME tag is a single word (or a sequence of words surrounded by
+# double-quotes, unless you are using Doxywizard) that should identify the
+# project for which the documentation is generated. This name is used in the
+# title of most generated pages and in a few other places.
+# The default value is: My Project.
+
+PROJECT_NAME           = SPNV
+
+# The PROJECT_NUMBER tag can be used to enter a project or revision number. This
+# could be handy for archiving the generated documentation or if some version
+# control system is used.
+
+PROJECT_NUMBER         = 0.1
+
+# Using the PROJECT_BRIEF tag one can provide an optional one line description
+# for a project that appears at the top of each page and should give viewer a
+# quick idea about the purpose of the project. Keep the description short.
+
+PROJECT_BRIEF          =
+
+# With the PROJECT_LOGO tag one can specify a logo or an icon that is included
+# in the documentation. The maximum height of the logo should not exceed 55
+# pixels and the maximum width should not exceed 200 pixels. Doxygen will copy
+# the logo to the output directory.
+
+PROJECT_LOGO           =
+
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) path
+# into which the generated documentation will be written. If a relative path is
+# entered, it will be relative to the location where doxygen was started. If
+# left blank the current directory will be used.
+
+OUTPUT_DIRECTORY       = doc
+
+# If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
+# directories (in 2 levels) under the output directory of each output format and
+# will distribute the generated files over these directories. Enabling this
+# option can be useful when feeding doxygen a huge amount of source files, where
+# putting all generated files in the same directory would otherwise causes
+# performance problems for the file system.
+# The default value is: NO.
+
+CREATE_SUBDIRS         = NO
+
+# If the ALLOW_UNICODE_NAMES tag is set to YES, doxygen will allow non-ASCII
+# characters to appear in the names of generated files. If set to NO, non-ASCII
+# characters will be escaped, for example _xE3_x81_x84 will be used for Unicode
+# U+3044.
+# The default value is: NO.
+
+ALLOW_UNICODE_NAMES    = NO
+
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all
+# documentation generated by doxygen is written. Doxygen will use this
+# information to generate all constant output in the proper language.
+# Possible values are: Afrikaans, Arabic, Armenian, Brazilian, Catalan, Chinese,
+# Chinese-Traditional, Croatian, Czech, Danish, Dutch, English (United States),
+# Esperanto, Farsi (Persian), Finnish, French, German, Greek, Hungarian,
+# Indonesian, Italian, Japanese, Japanese-en (Japanese with English messages),
+# Korean, Korean-en (Korean with English messages), Latvian, Lithuanian,
+# Macedonian, Norwegian, Persian (Farsi), Polish, Portuguese, Romanian, Russian,
+# Serbian, Serbian-Cyrillic, Slovak, Slovene, Spanish, Swedish, Turkish,
+# Ukrainian and Vietnamese.
+# The default value is: English.
+
+OUTPUT_LANGUAGE        = English
+
+# If the BRIEF_MEMBER_DESC tag is set to YES, doxygen will include brief member
+# descriptions after the members that are listed in the file and class
+# documentation (similar to Javadoc). Set to NO to disable this.
+# The default value is: YES.
+
+BRIEF_MEMBER_DESC      = YES
+
+# If the REPEAT_BRIEF tag is set to YES, doxygen will prepend the brief
+# description of a member or function before the detailed description
+#
+# Note: If both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
+# brief descriptions will be completely suppressed.
+# The default value is: YES.
+
+REPEAT_BRIEF           = YES
+
+# This tag implements a quasi-intelligent brief description abbreviator that is
+# used to form the text in various listings. Each string in this list, if found
+# as the leading text of the brief description, will be stripped from the text
+# and the result, after processing the whole list, is used as the annotated
+# text. Otherwise, the brief description is used as-is. If left blank, the
+# following values are used ($name is automatically replaced with the name of
+# the entity):The $name class, The $name widget, The $name file, is, provides,
+# specifies, contains, represents, a, an and the.
+
+ABBREVIATE_BRIEF       = "The $name class" \
+                         "The $name widget" \
+                         "The $name file" \
+                         is \
+                         provides \
+                         specifies \
+                         contains \
+                         represents \
+                         a \
+                         an \
+                         the
+
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
+# doxygen will generate a detailed section even if there is only a brief
+# description.
+# The default value is: NO.
+
+ALWAYS_DETAILED_SEC    = YES
+
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
+# inherited members of a class in the documentation of that class as if those
+# members were ordinary class members. Constructors, destructors and assignment
+# operators of the base classes will not be shown.
+# The default value is: NO.
+
+INLINE_INHERITED_MEMB  = YES
+
+# If the FULL_PATH_NAMES tag is set to YES, doxygen will prepend the full path
+# before files name in the file list and in the header files. If set to NO the
+# shortest path that makes the file name unique will be used
+# The default value is: YES.
+
+FULL_PATH_NAMES        = NO
+
+# The STRIP_FROM_PATH tag can be used to strip a user-defined part of the path.
+# Stripping is only done if one of the specified strings matches the left-hand
+# part of the path. The tag can be used to show relative paths in the file list.
+# If left blank the directory from which doxygen is run is used as the path to
+# strip.
+#
+# Note that you can specify absolute paths here, but also relative paths, which
+# will be relative from the directory where doxygen is started.
+# This tag requires that the tag FULL_PATH_NAMES is set to YES.
+
+STRIP_FROM_PATH        =
+
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of the
+# path mentioned in the documentation of a class, which tells the reader which
+# header file to include in order to use a class. If left blank only the name of
+# the header file containing the class definition is used. Otherwise one should
+# specify the list of include paths that are normally passed to the compiler
+# using the -I flag.
+
+STRIP_FROM_INC_PATH    =
+
+# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter (but
+# less readable) file names. This can be useful is your file systems doesn't
+# support long names like on DOS, Mac, or CD-ROM.
+# The default value is: NO.
+
+SHORT_NAMES            = NO
+
+# If the JAVADOC_AUTOBRIEF tag is set to YES then doxygen will interpret the
+# first line (until the first dot) of a Javadoc-style comment as the brief
+# description. If set to NO, the Javadoc-style will behave just like regular Qt-
+# style comments (thus requiring an explicit @brief command for a brief
+# description.)
+# The default value is: NO.
+
+JAVADOC_AUTOBRIEF      = NO
+
+# If the JAVADOC_BANNER tag is set to YES then doxygen will interpret a line
+# such as
+# /***************
+# as being the beginning of a Javadoc-style comment "banner". If set to NO, the
+# Javadoc-style will behave just like regular comments and it will not be
+# interpreted by doxygen.
+# The default value is: NO.
+
+JAVADOC_BANNER         = NO
+
+# If the QT_AUTOBRIEF tag is set to YES then doxygen will interpret the first
+# line (until the first dot) of a Qt-style comment as the brief description. If
+# set to NO, the Qt-style will behave just like regular Qt-style comments (thus
+# requiring an explicit \brief command for a brief description.)
+# The default value is: NO.
+
+QT_AUTOBRIEF           = NO
+
+# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make doxygen treat a
+# multi-line C++ special comment block (i.e. a block of //! or /// comments) as
+# a brief description. This used to be the default behavior. The new default is
+# to treat a multi-line C++ comment block as a detailed description. Set this
+# tag to YES if you prefer the old behavior instead.
+#
+# Note that setting this tag to YES also means that rational rose comments are
+# not recognized any more.
+# The default value is: NO.
+
+MULTILINE_CPP_IS_BRIEF = NO
+
+# By default Python docstrings are displayed as preformatted text and doxygen's
+# special commands cannot be used. By setting PYTHON_DOCSTRING to NO the
+# doxygen's special commands can be used and the contents of the docstring
+# documentation blocks is shown as doxygen documentation.
+# The default value is: YES.
+
+PYTHON_DOCSTRING       = YES
+
+# If the INHERIT_DOCS tag is set to YES then an undocumented member inherits the
+# documentation from any documented member that it re-implements.
+# The default value is: YES.
+
+INHERIT_DOCS           = YES
+
+# If the SEPARATE_MEMBER_PAGES tag is set to YES then doxygen will produce a new
+# page for each member. If set to NO, the documentation of a member will be part
+# of the file/class/namespace that contains it.
+# The default value is: NO.
+
+SEPARATE_MEMBER_PAGES  = NO
+
+# The TAB_SIZE tag can be used to set the number of spaces in a tab. Doxygen
+# uses this value to replace tabs by spaces in code fragments.
+# Minimum value: 1, maximum value: 16, default value: 4.
+
+TAB_SIZE               = 4
+
+# This tag can be used to specify a number of aliases that act as commands in
+# the documentation. An alias has the form:
+# name=value
+# For example adding
+# "sideeffect=@par Side Effects:^^"
+# will allow you to put the command \sideeffect (or @sideeffect) in the
+# documentation, which will result in a user-defined paragraph with heading
+# "Side Effects:". Note that you cannot put \n's in the value part of an alias
+# to insert newlines (in the resulting output). You can put ^^ in the value part
+# of an alias to insert a newline as if a physical newline was in the original
+# file. When you need a literal { or } or , in the value part of an alias you
+# have to escape them by means of a backslash (\), this can lead to conflicts
+# with the commands \{ and \} for these it is advised to use the version @{ and
+# @} or use a double escape (\\{ and \\})
+
+ALIASES                =
+
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources
+# only. Doxygen will then generate output that is more tailored for C. For
+# instance, some of the names that are used will be different. The list of all
+# members will be omitted, etc.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_FOR_C  = NO
+
+# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java or
+# Python sources only. Doxygen will then generate output that is more tailored
+# for that language. For instance, namespaces will be presented as packages,
+# qualified scopes will look different, etc.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_JAVA   = NO
+
+# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran
+# sources. Doxygen will then generate output that is tailored for Fortran.
+# The default value is: NO.
+
+OPTIMIZE_FOR_FORTRAN   = NO
+
+# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL
+# sources. Doxygen will then generate output that is tailored for VHDL.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_VHDL   = NO
+
+# Set the OPTIMIZE_OUTPUT_SLICE tag to YES if your project consists of Slice
+# sources only. Doxygen will then generate output that is more tailored for that
+# language. For instance, namespaces will be presented as modules, types will be
+# separated into more groups, etc.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_SLICE  = NO
+
+# Doxygen selects the parser to use depending on the extension of the files it
+# parses. With this tag you can assign which parser to use for a given
+# extension. Doxygen has a built-in mapping, but you can override or extend it
+# using this tag. The format is ext=language, where ext is a file extension, and
+# language is one of the parsers supported by doxygen: IDL, Java, JavaScript,
+# Csharp (C#), C, C++, Lex, D, PHP, md (Markdown), Objective-C, Python, Slice,
+# VHDL, Fortran (fixed format Fortran: FortranFixed, free formatted Fortran:
+# FortranFree, unknown formatted Fortran: Fortran. In the later case the parser
+# tries to guess whether the code is fixed or free formatted code, this is the
+# default for Fortran type files). For instance to make doxygen treat .inc files
+# as Fortran files (default is PHP), and .f files as C (default is Fortran),
+# use: inc=Fortran f=C.
+#
+# Note: For files without extension you can use no_extension as a placeholder.
+#
+# Note that for custom extensions you also need to set FILE_PATTERNS otherwise
+# the files are not read by doxygen. When specifying no_extension you should add
+# * to the FILE_PATTERNS.
+#
+# Note see also the list of default file extension mappings.
+
+EXTENSION_MAPPING      = cpp=C++ \
+                         h=C++
+
+# If the MARKDOWN_SUPPORT tag is enabled then doxygen pre-processes all comments
+# according to the Markdown format, which allows for more readable
+# documentation. See https://daringfireball.net/projects/markdown/ for details.
+# The output of markdown processing is further processed by doxygen, so you can
+# mix doxygen, HTML, and XML commands with Markdown formatting. Disable only in
+# case of backward compatibilities issues.
+# The default value is: YES.
+
+MARKDOWN_SUPPORT       = YES
+
+# When the TOC_INCLUDE_HEADINGS tag is set to a non-zero value, all headings up
+# to that level are automatically included in the table of contents, even if
+# they do not have an id attribute.
+# Note: This feature currently applies only to Markdown headings.
+# Minimum value: 0, maximum value: 99, default value: 5.
+# This tag requires that the tag MARKDOWN_SUPPORT is set to YES.
+
+TOC_INCLUDE_HEADINGS   = 0
+
+# When enabled doxygen tries to link words that correspond to documented
+# classes, or namespaces to their corresponding documentation. Such a link can
+# be prevented in individual cases by putting a % sign in front of the word or
+# globally by setting AUTOLINK_SUPPORT to NO.
+# The default value is: YES.
+
+AUTOLINK_SUPPORT       = YES
+
+# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want
+# to include (a tag file for) the STL sources as input, then you should set this
+# tag to YES in order to let doxygen match functions declarations and
+# definitions whose arguments contain STL classes (e.g. func(std::string);
+# versus func(std::string) {}). This also make the inheritance and collaboration
+# diagrams that involve STL classes more complete and accurate.
+# The default value is: NO.
+
+BUILTIN_STL_SUPPORT    = YES
+
+# If you use Microsoft's C++/CLI language, you should set this option to YES to
+# enable parsing support.
+# The default value is: NO.
+
+CPP_CLI_SUPPORT        = NO
+
+# Set the SIP_SUPPORT tag to YES if your project consists of sip (see:
+# https://www.riverbankcomputing.com/software/sip/intro) sources only. Doxygen
+# will parse them like normal C++ but will assume all classes use public instead
+# of private inheritance when no explicit protection keyword is present.
+# The default value is: NO.
+
+SIP_SUPPORT            = NO
+
+# For Microsoft's IDL there are propget and propput attributes to indicate
+# getter and setter methods for a property. Setting this option to YES will make
+# doxygen to replace the get and set methods by a property in the documentation.
+# This will only work if the methods are indeed getting or setting a simple
+# type. If this is not the case, or you want to show the methods anyway, you
+# should set this option to NO.
+# The default value is: YES.
+
+IDL_PROPERTY_SUPPORT   = NO
+
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
+# tag is set to YES then doxygen will reuse the documentation of the first
+# member in the group (if any) for the other members of the group. By default
+# all members of a group must be documented explicitly.
+# The default value is: NO.
+
+DISTRIBUTE_GROUP_DOC   = NO
+
+# If one adds a struct or class to a group and this option is enabled, then also
+# any nested class or struct is added to the same group. By default this option
+# is disabled and one has to add nested compounds explicitly via \ingroup.
+# The default value is: NO.
+
+GROUP_NESTED_COMPOUNDS = NO
+
+# Set the SUBGROUPING tag to YES to allow class member groups of the same type
+# (for instance a group of public functions) to be put as a subgroup of that
+# type (e.g. under the Public Functions section). Set it to NO to prevent
+# subgrouping. Alternatively, this can be done per class using the
+# \nosubgrouping command.
+# The default value is: YES.
+
+SUBGROUPING            = YES
+
+# When the INLINE_GROUPED_CLASSES tag is set to YES, classes, structs and unions
+# are shown inside the group in which they are included (e.g. using \ingroup)
+# instead of on a separate page (for HTML and Man pages) or section (for LaTeX
+# and RTF).
+#
+# Note that this feature does not work in combination with
+# SEPARATE_MEMBER_PAGES.
+# The default value is: NO.
+
+INLINE_GROUPED_CLASSES = NO
+
+# When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and unions
+# with only public data fields or simple typedef fields will be shown inline in
+# the documentation of the scope in which they are defined (i.e. file,
+# namespace, or group documentation), provided this scope is documented. If set
+# to NO, structs, classes, and unions are shown on a separate page (for HTML and
+# Man pages) or section (for LaTeX and RTF).
+# The default value is: NO.
+
+INLINE_SIMPLE_STRUCTS  = NO
+
+# When TYPEDEF_HIDES_STRUCT tag is enabled, a typedef of a struct, union, or
+# enum is documented as struct, union, or enum with the name of the typedef. So
+# typedef struct TypeS {} TypeT, will appear in the documentation as a struct
+# with name TypeT. When disabled the typedef will appear as a member of a file,
+# namespace, or class. And the struct will be named TypeS. This can typically be
+# useful for C code in case the coding convention dictates that all compound
+# types are typedef'ed and only the typedef is referenced, never the tag name.
+# The default value is: NO.
+
+TYPEDEF_HIDES_STRUCT   = NO
+
+# The size of the symbol lookup cache can be set using LOOKUP_CACHE_SIZE. This
+# cache is used to resolve symbols given their name and scope. Since this can be
+# an expensive process and often the same symbol appears multiple times in the
+# code, doxygen keeps a cache of pre-resolved symbols. If the cache is too small
+# doxygen will become slower. If the cache is too large, memory is wasted. The
+# cache size is given by this formula: 2^(16+LOOKUP_CACHE_SIZE). The valid range
+# is 0..9, the default is 0, corresponding to a cache size of 2^16=65536
+# symbols. At the end of a run doxygen will report the cache usage and suggest
+# the optimal cache size from a speed point of view.
+# Minimum value: 0, maximum value: 9, default value: 0.
+
+LOOKUP_CACHE_SIZE      = 0
+
+# The NUM_PROC_THREADS specifies the number threads doxygen is allowed to use
+# during processing. When set to 0 doxygen will based this on the number of
+# cores available in the system. You can set it explicitly to a value larger
+# than 0 to get more control over the balance between CPU load and processing
+# speed. At this moment only the input processing can be done using multiple
+# threads. Since this is still an experimental feature the default is set to 1,
+# which effectively disables parallel processing. Please report any issues you
+# encounter. Generating dot graphs in parallel is controlled by the
+# DOT_NUM_THREADS setting.
+# Minimum value: 0, maximum value: 32, default value: 1.
+
+NUM_PROC_THREADS       = 2
+
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+
+# If the EXTRACT_ALL tag is set to YES, doxygen will assume all entities in
+# documentation are documented, even if no documentation was available. Private
+# class members and static file members will be hidden unless the
+# EXTRACT_PRIVATE respectively EXTRACT_STATIC tags are set to YES.
+# Note: This will also disable the warnings about undocumented members that are
+# normally produced when WARNINGS is set to YES.
+# The default value is: NO.
+
+EXTRACT_ALL            = NO
+
+# If the EXTRACT_PRIVATE tag is set to YES, all private members of a class will
+# be included in the documentation.
+# The default value is: NO.
+
+EXTRACT_PRIVATE        = YES
+
+# If the EXTRACT_PRIV_VIRTUAL tag is set to YES, documented private virtual
+# methods of a class will be included in the documentation.
+# The default value is: NO.
+
+EXTRACT_PRIV_VIRTUAL   = YES
+
+# If the EXTRACT_PACKAGE tag is set to YES, all members with package or internal
+# scope will be included in the documentation.
+# The default value is: NO.
+
+EXTRACT_PACKAGE        = NO
+
+# If the EXTRACT_STATIC tag is set to YES, all static members of a file will be
+# included in the documentation.
+# The default value is: NO.
+
+EXTRACT_STATIC         = NO
+
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES, classes (and structs) defined
+# locally in source files will be included in the documentation. If set to NO,
+# only classes defined in header files are included. Does not have any effect
+# for Java sources.
+# The default value is: YES.
+
+EXTRACT_LOCAL_CLASSES  = YES
+
+# This flag is only useful for Objective-C code. If set to YES, local methods,
+# which are defined in the implementation section but not in the interface are
+# included in the documentation. If set to NO, only methods in the interface are
+# included.
+# The default value is: NO.
+
+EXTRACT_LOCAL_METHODS  = NO
+
+# If this flag is set to YES, the members of anonymous namespaces will be
+# extracted and appear in the documentation as a namespace called
+# 'anonymous_namespace{file}', where file will be replaced with the base name of
+# the file that contains the anonymous namespace. By default anonymous namespace
+# are hidden.
+# The default value is: NO.
+
+EXTRACT_ANON_NSPACES   = NO
+
+# If this flag is set to YES, the name of an unnamed parameter in a declaration
+# will be determined by the corresponding definition. By default unnamed
+# parameters remain unnamed in the output.
+# The default value is: YES.
+
+RESOLVE_UNNAMED_PARAMS = YES
+
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, doxygen will hide all
+# undocumented members inside documented classes or files. If set to NO these
+# members will be included in the various overviews, but no documentation
+# section is generated. This option has no effect if EXTRACT_ALL is enabled.
+# The default value is: NO.
+
+HIDE_UNDOC_MEMBERS     = NO
+
+# If the HIDE_UNDOC_CLASSES tag is set to YES, doxygen will hide all
+# undocumented classes that are normally visible in the class hierarchy. If set
+# to NO, these classes will be included in the various overviews. This option
+# has no effect if EXTRACT_ALL is enabled.
+# The default value is: NO.
+
+HIDE_UNDOC_CLASSES     = NO
+
+# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, doxygen will hide all friend
+# declarations. If set to NO, these declarations will be included in the
+# documentation.
+# The default value is: NO.
+
+HIDE_FRIEND_COMPOUNDS  = NO
+
+# If the HIDE_IN_BODY_DOCS tag is set to YES, doxygen will hide any
+# documentation blocks found inside the body of a function. If set to NO, these
+# blocks will be appended to the function's detailed documentation block.
+# The default value is: NO.
+
+HIDE_IN_BODY_DOCS      = YES
+
+# The INTERNAL_DOCS tag determines if documentation that is typed after a
+# \internal command is included. If the tag is set to NO then the documentation
+# will be excluded. Set it to YES to include the internal documentation.
+# The default value is: NO.
+
+INTERNAL_DOCS          = NO
+
+# With the correct setting of option CASE_SENSE_NAMES doxygen will better be
+# able to match the capabilities of the underlying filesystem. In case the
+# filesystem is case sensitive (i.e. it supports files in the same directory
+# whose names only differ in casing), the option must be set to YES to properly
+# deal with such files in case they appear in the input. For filesystems that
+# are not case sensitive the option should be be set to NO to properly deal with
+# output files written for symbols that only differ in casing, such as for two
+# classes, one named CLASS and the other named Class, and to also support
+# references to files without having to specify the exact matching casing. On
+# Windows (including Cygwin) and MacOS, users should typically set this option
+# to NO, whereas on Linux or other Unix flavors it should typically be set to
+# YES.
+# The default value is: system dependent.
+
+CASE_SENSE_NAMES       = YES
+
+# If the HIDE_SCOPE_NAMES tag is set to NO then doxygen will show members with
+# their full class and namespace scopes in the documentation. If set to YES, the
+# scope will be hidden.
+# The default value is: NO.
+
+HIDE_SCOPE_NAMES       = NO
+
+# If the HIDE_COMPOUND_REFERENCE tag is set to NO (default) then doxygen will
+# append additional text to a page's title, such as Class Reference. If set to
+# YES the compound reference will be hidden.
+# The default value is: NO.
+
+HIDE_COMPOUND_REFERENCE= NO
+
+# If the SHOW_HEADERFILE tag is set to YES then the documentation for a class
+# will show which file needs to be included to use the class.
+# The default value is: YES.
+
+SHOW_HEADERFILE        = YES
+
+# If the SHOW_INCLUDE_FILES tag is set to YES then doxygen will put a list of
+# the files that are included by a file in the documentation of that file.
+# The default value is: YES.
+
+SHOW_INCLUDE_FILES     = YES
+
+# If the SHOW_GROUPED_MEMB_INC tag is set to YES then Doxygen will add for each
+# grouped member an include statement to the documentation, telling the reader
+# which file to include in order to use the member.
+# The default value is: NO.
+
+SHOW_GROUPED_MEMB_INC  = NO
+
+# If the FORCE_LOCAL_INCLUDES tag is set to YES then doxygen will list include
+# files with double quotes in the documentation rather than with sharp brackets.
+# The default value is: NO.
+
+FORCE_LOCAL_INCLUDES   = NO
+
+# If the INLINE_INFO tag is set to YES then a tag [inline] is inserted in the
+# documentation for inline members.
+# The default value is: YES.
+
+INLINE_INFO            = YES
+
+# If the SORT_MEMBER_DOCS tag is set to YES then doxygen will sort the
+# (detailed) documentation of file and class members alphabetically by member
+# name. If set to NO, the members will appear in declaration order.
+# The default value is: YES.
+
+SORT_MEMBER_DOCS       = YES
+
+# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the brief
+# descriptions of file, namespace and class members alphabetically by member
+# name. If set to NO, the members will appear in declaration order. Note that
+# this will also influence the order of the classes in the class list.
+# The default value is: NO.
+
+SORT_BRIEF_DOCS        = NO
+
+# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen will sort the
+# (brief and detailed) documentation of class members so that constructors and
+# destructors are listed first. If set to NO the constructors will appear in the
+# respective orders defined by SORT_BRIEF_DOCS and SORT_MEMBER_DOCS.
+# Note: If SORT_BRIEF_DOCS is set to NO this option is ignored for sorting brief
+# member documentation.
+# Note: If SORT_MEMBER_DOCS is set to NO this option is ignored for sorting
+# detailed member documentation.
+# The default value is: NO.
+
+SORT_MEMBERS_CTORS_1ST = YES
+
+# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the hierarchy
+# of group names into alphabetical order. If set to NO the group names will
+# appear in their defined order.
+# The default value is: NO.
+
+SORT_GROUP_NAMES       = NO
+
+# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be sorted by
+# fully-qualified names, including namespaces. If set to NO, the class list will
+# be sorted only by class name, not including the namespace part.
+# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
+# Note: This option applies only to the class list, not to the alphabetical
+# list.
+# The default value is: NO.
+
+SORT_BY_SCOPE_NAME     = NO
+
+# If the STRICT_PROTO_MATCHING option is enabled and doxygen fails to do proper
+# type resolution of all parameters of a function it will reject a match between
+# the prototype and the implementation of a member function even if there is
+# only one candidate or it is obvious which candidate to choose by doing a
+# simple string match. By disabling STRICT_PROTO_MATCHING doxygen will still
+# accept a match between prototype and implementation in such cases.
+# The default value is: NO.
+
+STRICT_PROTO_MATCHING  = NO
+
+# The GENERATE_TODOLIST tag can be used to enable (YES) or disable (NO) the todo
+# list. This list is created by putting \todo commands in the documentation.
+# The default value is: YES.
+
+GENERATE_TODOLIST      = YES
+
+# The GENERATE_TESTLIST tag can be used to enable (YES) or disable (NO) the test
+# list. This list is created by putting \test commands in the documentation.
+# The default value is: YES.
+
+GENERATE_TESTLIST      = YES
+
+# The GENERATE_BUGLIST tag can be used to enable (YES) or disable (NO) the bug
+# list. This list is created by putting \bug commands in the documentation.
+# The default value is: YES.
+
+GENERATE_BUGLIST       = YES
+
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or disable (NO)
+# the deprecated list. This list is created by putting \deprecated commands in
+# the documentation.
+# The default value is: YES.
+
+GENERATE_DEPRECATEDLIST= YES
+
+# The ENABLED_SECTIONS tag can be used to enable conditional documentation
+# sections, marked by \if <section_label> ... \endif and \cond <section_label>
+# ... \endcond blocks.
+
+ENABLED_SECTIONS       =
+
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines that the
+# initial value of a variable or macro / define can have for it to appear in the
+# documentation. If the initializer consists of more lines than specified here
+# it will be hidden. Use a value of 0 to hide initializers completely. The
+# appearance of the value of individual variables and macros / defines can be
+# controlled using \showinitializer or \hideinitializer command in the
+# documentation regardless of this setting.
+# Minimum value: 0, maximum value: 10000, default value: 30.
+
+MAX_INITIALIZER_LINES  = 30
+
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated at
+# the bottom of the documentation of classes and structs. If set to YES, the
+# list will mention the files that were used to generate the documentation.
+# The default value is: YES.
+
+SHOW_USED_FILES        = NO
+
+# Set the SHOW_FILES tag to NO to disable the generation of the Files page. This
+# will remove the Files entry from the Quick Index and from the Folder Tree View
+# (if specified).
+# The default value is: YES.
+
+SHOW_FILES             = YES
+
+# Set the SHOW_NAMESPACES tag to NO to disable the generation of the Namespaces
+# page. This will remove the Namespaces entry from the Quick Index and from the
+# Folder Tree View (if specified).
+# The default value is: YES.
+
+SHOW_NAMESPACES        = YES
+
+# The FILE_VERSION_FILTER tag can be used to specify a program or script that
+# doxygen should invoke to get the current version for each file (typically from
+# the version control system). Doxygen will invoke the program by executing (via
+# popen()) the command command input-file, where command is the value of the
+# FILE_VERSION_FILTER tag, and input-file is the name of an input file provided
+# by doxygen. Whatever the program writes to standard output is used as the file
+# version. For an example see the documentation.
+
+FILE_VERSION_FILTER    =
+
+# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed
+# by doxygen. The layout file controls the global structure of the generated
+# output files in an output format independent way. To create the layout file
+# that represents doxygen's defaults, run doxygen with the -l option. You can
+# optionally specify a file name after the option, if omitted DoxygenLayout.xml
+# will be used as the name of the layout file. See also section "Changing the
+# layout of pages" for information.
+#
+# Note that if you run doxygen from a directory containing a file called
+# DoxygenLayout.xml, doxygen will parse it automatically even if the LAYOUT_FILE
+# tag is left empty.
+
+LAYOUT_FILE            =
+
+# The CITE_BIB_FILES tag can be used to specify one or more bib files containing
+# the reference definitions. This must be a list of .bib files. The .bib
+# extension is automatically appended if omitted. This requires the bibtex tool
+# to be installed. See also https://en.wikipedia.org/wiki/BibTeX for more info.
+# For LaTeX the style of the bibliography can be controlled using
+# LATEX_BIB_STYLE. To use this feature you need bibtex and perl available in the
+# search path. See also \cite for info how to create references.
+
+CITE_BIB_FILES         =
+
+#---------------------------------------------------------------------------
+# Configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+
+# The QUIET tag can be used to turn on/off the messages that are generated to
+# standard output by doxygen. If QUIET is set to YES this implies that the
+# messages are off.
+# The default value is: NO.
+
+QUIET                  = YES
+
+# The WARNINGS tag can be used to turn on/off the warning messages that are
+# generated to standard error (stderr) by doxygen. If WARNINGS is set to YES
+# this implies that the warnings are on.
+#
+# Tip: Turn warnings on while writing the documentation.
+# The default value is: YES.
+
+WARNINGS               = YES
+
+# If the WARN_IF_UNDOCUMENTED tag is set to YES then doxygen will generate
+# warnings for undocumented members. If EXTRACT_ALL is set to YES then this flag
+# will automatically be disabled.
+# The default value is: YES.
+
+WARN_IF_UNDOCUMENTED   = NO
+
+# If the WARN_IF_DOC_ERROR tag is set to YES, doxygen will generate warnings for
+# potential errors in the documentation, such as documenting some parameters in
+# a documented function twice, or documenting parameters that don't exist or
+# using markup commands wrongly.
+# The default value is: YES.
+
+WARN_IF_DOC_ERROR      = YES
+
+# If WARN_IF_INCOMPLETE_DOC is set to YES, doxygen will warn about incomplete
+# function parameter documentation. If set to NO, doxygen will accept that some
+# parameters have no documentation without warning.
+# The default value is: YES.
+
+WARN_IF_INCOMPLETE_DOC = YES
+
+# This WARN_NO_PARAMDOC option can be enabled to get warnings for functions that
+# are documented, but have no documentation for their parameters or return
+# value. If set to NO, doxygen will only warn about wrong parameter
+# documentation, but not about the absence of documentation. If EXTRACT_ALL is
+# set to YES then this flag will automatically be disabled. See also
+# WARN_IF_INCOMPLETE_DOC
+# The default value is: NO.
+
+WARN_NO_PARAMDOC       = YES
+
+# If the WARN_AS_ERROR tag is set to YES then doxygen will immediately stop when
+# a warning is encountered. If the WARN_AS_ERROR tag is set to FAIL_ON_WARNINGS
+# then doxygen will continue running as if WARN_AS_ERROR tag is set to NO, but
+# at the end of the doxygen process doxygen will return with a non-zero status.
+# Possible values are: NO, YES and FAIL_ON_WARNINGS.
+# The default value is: NO.
+
+WARN_AS_ERROR          = NO
+
+# The WARN_FORMAT tag determines the format of the warning messages that doxygen
+# can produce. The string should contain the $file, $line, and $text tags, which
+# will be replaced by the file and line number from which the warning originated
+# and the warning text. Optionally the format may contain $version, which will
+# be replaced by the version of the file (if it could be obtained via
+# FILE_VERSION_FILTER)
+# The default value is: $file:$line: $text.
+
+WARN_FORMAT            = "$file:$line: $text"
+
+# The WARN_LOGFILE tag can be used to specify a file to which warning and error
+# messages should be written. If left blank the output is written to standard
+# error (stderr). In case the file specified cannot be opened for writing the
+# warning and error messages are written to standard error. When as file - is
+# specified the warning and error messages are written to standard output
+# (stdout).
+
+WARN_LOGFILE           =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the input files
+#---------------------------------------------------------------------------
+
+# The INPUT tag is used to specify the files and/or directories that contain
+# documented source files. You may enter file names like myfile.cpp or
+# directories like /usr/src/myproject. Separate the files or directories with
+# spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
+# Note: If this tag is empty the current directory is searched.
+
+INPUT                  = "@SRC_DIR@" \
+                         "@TEMPLATE_DIR@/main_page.cpp"
+
+# This tag can be used to specify the character encoding of the source files
+# that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
+# libiconv (or the iconv built into libc) for the transcoding. See the libiconv
+# documentation (see:
+# https://www.gnu.org/software/libiconv/) for the list of possible encodings.
+# The default value is: UTF-8.
+
+INPUT_ENCODING         = UTF-8
+
+# If the value of the INPUT tag contains directories, you can use the
+# FILE_PATTERNS tag to specify one or more wildcard patterns (like *.cpp and
+# *.h) to filter out the source-files in the directories.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# read by doxygen.
+#
+# Note the list of default checked file patterns might differ from the list of
+# default file extension mappings.
+#
+# If left blank the following patterns are tested:*.c, *.cc, *.cxx, *.cpp,
+# *.c++, *.java, *.ii, *.ixx, *.ipp, *.i++, *.inl, *.idl, *.ddl, *.odl, *.h,
+# *.hh, *.hxx, *.hpp, *.h++, *.l, *.cs, *.d, *.php, *.php4, *.php5, *.phtml,
+# *.inc, *.m, *.markdown, *.md, *.mm, *.dox (to be provided as doxygen C
+# comment), *.py, *.pyw, *.f90, *.f95, *.f03, *.f08, *.f18, *.f, *.for, *.vhd,
+# *.vhdl, *.ucf, *.qsf and *.ice.
+
+FILE_PATTERNS          = *.c \
+                         *.cc \
+                         *.cxx \
+                         *.cpp \
+                         *.tpp \
+                         *.c++ \
+                         *.java \
+                         *.ii \
+                         *.ixx \
+                         *.ipp \
+                         *.i++ \
+                         *.inl \
+                         *.idl \
+                         *.ddl \
+                         *.odl \
+                         *.h \
+                         *.hh \
+                         *.hxx \
+                         *.hpp \
+                         *.h++ \
+                         *.cs \
+                         *.d \
+                         *.php \
+                         *.php4 \
+                         *.php5 \
+                         *.phtml \
+                         *.inc \
+                         *.m \
+                         *.markdown \
+                         *.md \
+                         *.mm \
+                         *.dox \
+                         *.py \
+                         *.pyw \
+                         *.f90 \
+                         *.f95 \
+                         *.f03 \
+                         *.f08 \
+                         *.f \
+                         *.for \
+                         *.tcl \
+                         *.vhd \
+                         *.vhdl \
+                         *.ucf \
+                         *.qsf
+
+# The RECURSIVE tag can be used to specify whether or not subdirectories should
+# be searched for input files as well.
+# The default value is: NO.
+
+RECURSIVE              = NO
+
+# The EXCLUDE tag can be used to specify files and/or directories that should be
+# excluded from the INPUT source files. This way you can easily exclude a
+# subdirectory from a directory tree whose root is specified with the INPUT tag.
+#
+# Note that relative paths are relative to the directory from which doxygen is
+# run.
+
+EXCLUDE                =
+
+# The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
+# directories that are symbolic links (a Unix file system feature) are excluded
+# from the input.
+# The default value is: NO.
+
+EXCLUDE_SYMLINKS       = NO
+
+# If the value of the INPUT tag contains directories, you can use the
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
+# certain files from those directories.
+#
+# Note that the wildcards are matched against the file with absolute path, so to
+# exclude all test directories for example use the pattern */test/*
+
+EXCLUDE_PATTERNS       =
+
+# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
+# (namespaces, classes, functions, etc.) that should be excluded from the
+# output. The symbol name can be a fully qualified name, a word, or if the
+# wildcard * is used, a substring. Examples: ANamespace, AClass,
+# ANamespace::AClass, ANamespace::*Test
+#
+# Note that the wildcards are matched against the file with absolute path, so to
+# exclude all test directories use the pattern */test/*
+
+EXCLUDE_SYMBOLS        =
+
+# The EXAMPLE_PATH tag can be used to specify one or more files or directories
+# that contain example code fragments that are included (see the \include
+# command).
+
+EXAMPLE_PATH           =
+
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp and
+# *.h) to filter out the source-files in the directories. If left blank all
+# files are included.
+
+EXAMPLE_PATTERNS       =
+
+# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
+# searched for input files to be used with the \include or \dontinclude commands
+# irrespective of the value of the RECURSIVE tag.
+# The default value is: NO.
+
+EXAMPLE_RECURSIVE      = NO
+
+# The IMAGE_PATH tag can be used to specify one or more files or directories
+# that contain images that are to be included in the documentation (see the
+# \image command).
+
+IMAGE_PATH             =
+
+# The INPUT_FILTER tag can be used to specify a program that doxygen should
+# invoke to filter for each input file. Doxygen will invoke the filter program
+# by executing (via popen()) the command:
+#
+# <filter> <input-file>
+#
+# where <filter> is the value of the INPUT_FILTER tag, and <input-file> is the
+# name of an input file. Doxygen will then use the output that the filter
+# program writes to standard output. If FILTER_PATTERNS is specified, this tag
+# will be ignored.
+#
+# Note that the filter must not add or remove lines; it is applied before the
+# code is scanned, but not when the output code is generated. If lines are added
+# or removed, the anchors will not be placed correctly.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# properly processed by doxygen.
+
+INPUT_FILTER           =
+
+# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
+# basis. Doxygen will compare the file name with each pattern and apply the
+# filter if there is a match. The filters are a list of the form: pattern=filter
+# (like *.cpp=my_cpp_filter). See INPUT_FILTER for further information on how
+# filters are used. If the FILTER_PATTERNS tag is empty or if none of the
+# patterns match the file name, INPUT_FILTER is applied.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# properly processed by doxygen.
+
+FILTER_PATTERNS        =
+
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
+# INPUT_FILTER) will also be used to filter the input files that are used for
+# producing the source files to browse (i.e. when SOURCE_BROWSER is set to YES).
+# The default value is: NO.
+
+FILTER_SOURCE_FILES    = NO
+
+# The FILTER_SOURCE_PATTERNS tag can be used to specify source filters per file
+# pattern. A pattern will override the setting for FILTER_PATTERN (if any) and
+# it is also possible to disable source filtering for a specific pattern using
+# *.ext= (so without naming a filter).
+# This tag requires that the tag FILTER_SOURCE_FILES is set to YES.
+
+FILTER_SOURCE_PATTERNS =
+
+# If the USE_MDFILE_AS_MAINPAGE tag refers to the name of a markdown file that
+# is part of the input, its contents will be placed on the main page
+# (index.html). This can be useful if you have a project on for instance GitHub
+# and want to reuse the introduction page also for the doxygen output.
+
+USE_MDFILE_AS_MAINPAGE =
+
+#---------------------------------------------------------------------------
+# Configuration options related to source browsing
+#---------------------------------------------------------------------------
+
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will be
+# generated. Documented entities will be cross-referenced with these sources.
+#
+# Note: To get rid of all source code in the generated output, make sure that
+# also VERBATIM_HEADERS is set to NO.
+# The default value is: NO.
+
+SOURCE_BROWSER         = NO
+
+# Setting the INLINE_SOURCES tag to YES will include the body of functions,
+# classes and enums directly into the documentation.
+# The default value is: NO.
+
+INLINE_SOURCES         = NO
+
+# Setting the STRIP_CODE_COMMENTS tag to YES will instruct doxygen to hide any
+# special comment blocks from generated source code fragments. Normal C, C++ and
+# Fortran comments will always remain visible.
+# The default value is: YES.
+
+STRIP_CODE_COMMENTS    = YES
+
+# If the REFERENCED_BY_RELATION tag is set to YES then for each documented
+# entity all documented functions referencing it will be listed.
+# The default value is: NO.
+
+REFERENCED_BY_RELATION = NO
+
+# If the REFERENCES_RELATION tag is set to YES then for each documented function
+# all documented entities called/used by that function will be listed.
+# The default value is: NO.
+
+REFERENCES_RELATION    = NO
+
+# If the REFERENCES_LINK_SOURCE tag is set to YES and SOURCE_BROWSER tag is set
+# to YES then the hyperlinks from functions in REFERENCES_RELATION and
+# REFERENCED_BY_RELATION lists will link to the source code. Otherwise they will
+# link to the documentation.
+# The default value is: YES.
+
+REFERENCES_LINK_SOURCE = YES
+
+# If SOURCE_TOOLTIPS is enabled (the default) then hovering a hyperlink in the
+# source code will show a tooltip with additional information such as prototype,
+# brief description and links to the definition and documentation. Since this
+# will make the HTML file larger and loading of large files a bit slower, you
+# can opt to disable this feature.
+# The default value is: YES.
+# This tag requires that the tag SOURCE_BROWSER is set to YES.
+
+SOURCE_TOOLTIPS        = NO
+
+# If the USE_HTAGS tag is set to YES then the references to source code will
+# point to the HTML generated by the htags(1) tool instead of doxygen built-in
+# source browser. The htags tool is part of GNU's global source tagging system
+# (see https://www.gnu.org/software/global/global.html). You will need version
+# 4.8.6 or higher.
+#
+# To use it do the following:
+# - Install the latest version of global
+# - Enable SOURCE_BROWSER and USE_HTAGS in the configuration file
+# - Make sure the INPUT points to the root of the source tree
+# - Run doxygen as normal
+#
+# Doxygen will invoke htags (and that will in turn invoke gtags), so these
+# tools must be available from the command line (i.e. in the search path).
+#
+# The result: instead of the source browser generated by doxygen, the links to
+# source code will now point to the output of htags.
+# The default value is: NO.
+# This tag requires that the tag SOURCE_BROWSER is set to YES.
+
+USE_HTAGS              = NO
+
+# If the VERBATIM_HEADERS tag is set the YES then doxygen will generate a
+# verbatim copy of the header file for each class for which an include is
+# specified. Set to NO to disable this.
+# See also: Section \class.
+# The default value is: YES.
+
+VERBATIM_HEADERS       = YES
+
+#---------------------------------------------------------------------------
+# Configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index of all
+# compounds will be generated. Enable this if the project contains a lot of
+# classes, structs, unions or interfaces.
+# The default value is: YES.
+
+ALPHABETICAL_INDEX     = YES
+
+# In case all classes in a project start with a common prefix, all classes will
+# be put under the same header in the alphabetical index. The IGNORE_PREFIX tag
+# can be used to specify a prefix (or a list of prefixes) that should be ignored
+# while generating the index headers.
+# This tag requires that the tag ALPHABETICAL_INDEX is set to YES.
+
+IGNORE_PREFIX          =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the HTML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_HTML tag is set to YES, doxygen will generate HTML output
+# The default value is: YES.
+
+GENERATE_HTML          = YES
+
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: html.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_OUTPUT            = html
+
+# The HTML_FILE_EXTENSION tag can be used to specify the file extension for each
+# generated HTML page (for example: .htm, .php, .asp).
+# The default value is: .html.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_FILE_EXTENSION    = .html
+
+# The HTML_HEADER tag can be used to specify a user-defined HTML header file for
+# each generated HTML page. If the tag is left blank doxygen will generate a
+# standard header.
+#
+# To get valid HTML the header file that includes any scripts and style sheets
+# that doxygen needs, which is dependent on the configuration options used (e.g.
+# the setting GENERATE_TREEVIEW). It is highly recommended to start with a
+# default header using
+# doxygen -w html new_header.html new_footer.html new_stylesheet.css
+# YourConfigFile
+# and then modify the file new_header.html. See also section "Doxygen usage"
+# for information on how to generate the default header that doxygen normally
+# uses.
+# Note: The header is subject to change so you typically have to regenerate the
+# default header when upgrading to a newer version of doxygen. For a description
+# of the possible markers and block names see the documentation.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_HEADER            = @TEMPLATE_DIR@/header.html
+
+# The HTML_FOOTER tag can be used to specify a user-defined HTML footer for each
+# generated HTML page. If the tag is left blank doxygen will generate a standard
+# footer. See HTML_HEADER for more information on how to generate a default
+# footer and what special commands can be used inside the footer. See also
+# section "Doxygen usage" for information on how to generate the default footer
+# that doxygen normally uses.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_FOOTER            = @TEMPLATE_DIR@/footer.html
+
+# The HTML_STYLESHEET tag can be used to specify a user-defined cascading style
+# sheet that is used by each HTML page. It can be used to fine-tune the look of
+# the HTML output. If left blank doxygen will generate a default style sheet.
+# See also section "Doxygen usage" for information on how to generate the style
+# sheet that doxygen normally uses.
+# Note: It is recommended to use HTML_EXTRA_STYLESHEET instead of this tag, as
+# it is more robust and this tag (HTML_STYLESHEET) will in the future become
+# obsolete.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_STYLESHEET        = @TEMPLATE_DIR@/style.css
+
+# The HTML_EXTRA_STYLESHEET tag can be used to specify additional user-defined
+# cascading style sheets that are included after the standard style sheets
+# created by doxygen. Using this option one can overrule certain style aspects.
+# This is preferred over using HTML_STYLESHEET since it does not replace the
+# standard style sheet and is therefore more robust against future updates.
+# Doxygen will copy the style sheet files to the output directory.
+# Note: The order of the extra style sheet files is of importance (e.g. the last
+# style sheet in the list overrules the setting of the previous ones in the
+# list). For an example see the documentation.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_EXTRA_STYLESHEET  =
+
+# The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
+# other source files which should be copied to the HTML output directory. Note
+# that these files will be copied to the base HTML output directory. Use the
+# $relpath^ marker in the HTML_HEADER and/or HTML_FOOTER files to load these
+# files. In the HTML_STYLESHEET file, use the file name only. Also note that the
+# files will be copied as-is; there are no commands or markers available.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_EXTRA_FILES       =
+
+# The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
+# will adjust the colors in the style sheet and background images according to
+# this color. Hue is specified as an angle on a color-wheel, see
+# https://en.wikipedia.org/wiki/Hue for more information. For instance the value
+# 0 represents red, 60 is yellow, 120 is green, 180 is cyan, 240 is blue, 300
+# purple, and 360 is red again.
+# Minimum value: 0, maximum value: 359, default value: 220.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_COLORSTYLE_HUE    = 220
+
+# The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of the colors
+# in the HTML output. For a value of 0 the output will use gray-scales only. A
+# value of 255 will produce the most vivid colors.
+# Minimum value: 0, maximum value: 255, default value: 100.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_COLORSTYLE_SAT    = 130
+
+# The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to the
+# luminance component of the colors in the HTML output. Values below 100
+# gradually make the output lighter, whereas values above 100 make the output
+# darker. The value divided by 100 is the actual gamma applied, so 80 represents
+# a gamma of 0.8, The value 220 represents a gamma of 2.2, and 100 does not
+# change the gamma.
+# Minimum value: 40, maximum value: 240, default value: 80.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_COLORSTYLE_GAMMA  = 80
+
+# If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML
+# page will contain the date and time when the page was generated. Setting this
+# to YES can help to show when doxygen was last run and thus if the
+# documentation is up to date.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_TIMESTAMP         = NO
+
+# If the HTML_DYNAMIC_MENUS tag is set to YES then the generated HTML
+# documentation will contain a main index with vertical navigation menus that
+# are dynamically created via JavaScript. If disabled, the navigation index will
+# consists of multiple levels of tabs that are statically embedded in every HTML
+# page. Disable this option to support browsers that do not have JavaScript,
+# like the Qt help browser.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_DYNAMIC_MENUS     = NO
+
+# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
+# documentation will contain sections that can be hidden and shown after the
+# page has loaded.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_DYNAMIC_SECTIONS  = NO
+
+# With HTML_INDEX_NUM_ENTRIES one can control the preferred number of entries
+# shown in the various tree structured indices initially; the user can expand
+# and collapse entries dynamically later on. Doxygen will expand the tree to
+# such a level that at most the specified number of entries are visible (unless
+# a fully collapsed tree already exceeds this amount). So setting the number of
+# entries 1 will produce a full collapsed tree by default. 0 is a special value
+# representing an infinite number of entries and will result in a full expanded
+# tree by default.
+# Minimum value: 0, maximum value: 9999, default value: 100.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_INDEX_NUM_ENTRIES = 100
+
+# If the GENERATE_DOCSET tag is set to YES, additional index files will be
+# generated that can be used as input for Apple's Xcode 3 integrated development
+# environment (see:
+# https://developer.apple.com/xcode/), introduced with OSX 10.5 (Leopard). To
+# create a documentation set, doxygen will generate a Makefile in the HTML
+# output directory. Running make will produce the docset in that directory and
+# running make install will install the docset in
+# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find it at
+# startup. See https://developer.apple.com/library/archive/featuredarticles/Doxy
+# genXcode/_index.html for more information.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_DOCSET        = NO
+
+# This tag determines the name of the docset feed. A documentation feed provides
+# an umbrella under which multiple documentation sets from a single provider
+# (such as a company or product suite) can be grouped.
+# The default value is: Doxygen generated docs.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_FEEDNAME        = "Doxygen generated docs"
+
+# This tag determines the URL of the docset feed. A documentation feed provides
+# an umbrella under which multiple documentation sets from a single provider
+# (such as a company or product suite) can be grouped.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_FEEDURL         =
+
+# This tag specifies a string that should uniquely identify the documentation
+# set bundle. This should be a reverse domain-name style string, e.g.
+# com.mycompany.MyDocSet. Doxygen will append .docset to the name.
+# The default value is: org.doxygen.Project.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_BUNDLE_ID       = org.doxygen.Project
+
+# The DOCSET_PUBLISHER_ID tag specifies a string that should uniquely identify
+# the documentation publisher. This should be a reverse domain-name style
+# string, e.g. com.mycompany.MyDocSet.documentation.
+# The default value is: org.doxygen.Publisher.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_PUBLISHER_ID    =
+
+# The DOCSET_PUBLISHER_NAME tag identifies the documentation publisher.
+# The default value is: Publisher.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_PUBLISHER_NAME  =
+
+# If the GENERATE_HTMLHELP tag is set to YES then doxygen generates three
+# additional HTML index files: index.hhp, index.hhc, and index.hhk. The
+# index.hhp is a project file that can be read by Microsoft's HTML Help Workshop
+# on Windows. In the beginning of 2021 Microsoft took the original page, with
+# a.o. the download links, offline the HTML help workshop was already many years
+# in maintenance mode). You can download the HTML help workshop from the web
+# archives at Installation executable (see:
+# http://web.archive.org/web/20160201063255/http://download.microsoft.com/downlo
+# ad/0/A/9/0A939EF6-E31C-430F-A3DF-DFAE7960D564/htmlhelp.exe).
+#
+# The HTML Help Workshop contains a compiler that can convert all HTML output
+# generated by doxygen into a single compiled HTML file (.chm). Compiled HTML
+# files are now used as the Windows 98 help format, and will replace the old
+# Windows help format (.hlp) on all Windows platforms in the future. Compressed
+# HTML files also contain an index, a table of contents, and you can search for
+# words in the documentation. The HTML workshop also contains a viewer for
+# compressed HTML files.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_HTMLHELP      = NO
+
+# The CHM_FILE tag can be used to specify the file name of the resulting .chm
+# file. You can add a path in front of the file if the result should not be
+# written to the html output directory.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+CHM_FILE               =
+
+# The HHC_LOCATION tag can be used to specify the location (absolute path
+# including file name) of the HTML help compiler (hhc.exe). If non-empty,
+# doxygen will try to run the HTML help compiler on the generated index.hhp.
+# The file has to be specified with full path.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+HHC_LOCATION           =
+
+# The GENERATE_CHI flag controls if a separate .chi index file is generated
+# (YES) or that it should be included in the main .chm file (NO).
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+GENERATE_CHI           = NO
+
+# The CHM_INDEX_ENCODING is used to encode HtmlHelp index (hhk), content (hhc)
+# and project file content.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+CHM_INDEX_ENCODING     =
+
+# The BINARY_TOC flag controls whether a binary table of contents is generated
+# (YES) or a normal table of contents (NO) in the .chm file. Furthermore it
+# enables the Previous and Next buttons.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+BINARY_TOC             = NO
+
+# The TOC_EXPAND flag can be set to YES to add extra items for group members to
+# the table of contents of the HTML help documentation and to the tree view.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+TOC_EXPAND             = NO
+
+# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and
+# QHP_VIRTUAL_FOLDER are set, an additional index file will be generated that
+# can be used as input for Qt's qhelpgenerator to generate a Qt Compressed Help
+# (.qch) of the generated HTML documentation.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_QHP           = NO
+
+# If the QHG_LOCATION tag is specified, the QCH_FILE tag can be used to specify
+# the file name of the resulting .qch file. The path specified is relative to
+# the HTML output folder.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QCH_FILE               =
+
+# The QHP_NAMESPACE tag specifies the namespace to use when generating Qt Help
+# Project output. For more information please see Qt Help Project / Namespace
+# (see:
+# https://doc.qt.io/archives/qt-4.8/qthelpproject.html#namespace).
+# The default value is: org.doxygen.Project.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_NAMESPACE          = org.doxygen.Project
+
+# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating Qt
+# Help Project output. For more information please see Qt Help Project / Virtual
+# Folders (see:
+# https://doc.qt.io/archives/qt-4.8/qthelpproject.html#virtual-folders).
+# The default value is: doc.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_VIRTUAL_FOLDER     = doc
+
+# If the QHP_CUST_FILTER_NAME tag is set, it specifies the name of a custom
+# filter to add. For more information please see Qt Help Project / Custom
+# Filters (see:
+# https://doc.qt.io/archives/qt-4.8/qthelpproject.html#custom-filters).
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_CUST_FILTER_NAME   =
+
+# The QHP_CUST_FILTER_ATTRS tag specifies the list of the attributes of the
+# custom filter to add. For more information please see Qt Help Project / Custom
+# Filters (see:
+# https://doc.qt.io/archives/qt-4.8/qthelpproject.html#custom-filters).
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_CUST_FILTER_ATTRS  =
+
+# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
+# project's filter section matches. Qt Help Project / Filter Attributes (see:
+# https://doc.qt.io/archives/qt-4.8/qthelpproject.html#filter-attributes).
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_SECT_FILTER_ATTRS  =
+
+# The QHG_LOCATION tag can be used to specify the location (absolute path
+# including file name) of Qt's qhelpgenerator. If non-empty doxygen will try to
+# run qhelpgenerator on the generated .qhp file.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHG_LOCATION           =
+
+# If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files will be
+# generated, together with the HTML files, they form an Eclipse help plugin. To
+# install this plugin and make it available under the help contents menu in
+# Eclipse, the contents of the directory containing the HTML and XML files needs
+# to be copied into the plugins directory of eclipse. The name of the directory
+# within the plugins directory should be the same as the ECLIPSE_DOC_ID value.
+# After copying Eclipse needs to be restarted before the help appears.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_ECLIPSEHELP   = NO
+
+# A unique identifier for the Eclipse help plugin. When installing the plugin
+# the directory name containing the HTML and XML files should also have this
+# name. Each documentation set should have its own identifier.
+# The default value is: org.doxygen.Project.
+# This tag requires that the tag GENERATE_ECLIPSEHELP is set to YES.
+
+ECLIPSE_DOC_ID         = org.doxygen.Project
+
+# If you want full control over the layout of the generated HTML pages it might
+# be necessary to disable the index and replace it with your own. The
+# DISABLE_INDEX tag can be used to turn on/off the condensed index (tabs) at top
+# of each HTML page. A value of NO enables the index and the value YES disables
+# it. Since the tabs in the index contain the same information as the navigation
+# tree, you can set this option to YES if you also set GENERATE_TREEVIEW to YES.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+DISABLE_INDEX          = NO
+
+# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
+# structure should be generated to display hierarchical information. If the tag
+# value is set to YES, a side panel will be generated containing a tree-like
+# index structure (just like the one that is generated for HTML Help). For this
+# to work a browser that supports JavaScript, DHTML, CSS and frames is required
+# (i.e. any modern browser). Windows users are probably better off using the
+# HTML help feature. Via custom style sheets (see HTML_EXTRA_STYLESHEET) one can
+# further fine tune the look of the index (see "Fine-tuning the output"). As an
+# example, the default style sheet generated by doxygen has an example that
+# shows how to put an image at the root of the tree instead of the PROJECT_NAME.
+# Since the tree basically has the same information as the tab index, you could
+# consider setting DISABLE_INDEX to YES when enabling this option.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_TREEVIEW      = NO
+
+# When both GENERATE_TREEVIEW and DISABLE_INDEX are set to YES, then the
+# FULL_SIDEBAR option determines if the side bar is limited to only the treeview
+# area (value NO) or if it should extend to the full height of the window (value
+# YES). Setting this to YES gives a layout similar to
+# https://docs.readthedocs.io with more room for contents, but less room for the
+# project logo, title, and description. If either GENERATE_TREEVIEW or
+# DISABLE_INDEX is set to NO, this option has no effect.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+FULL_SIDEBAR           = NO
+
+# The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values that
+# doxygen will group on one line in the generated HTML documentation.
+#
+# Note that a value of 0 will completely suppress the enum values from appearing
+# in the overview section.
+# Minimum value: 0, maximum value: 20, default value: 4.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+ENUM_VALUES_PER_LINE   = 4
+
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be used
+# to set the initial width (in pixels) of the frame in which the tree is shown.
+# Minimum value: 0, maximum value: 1500, default value: 250.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+TREEVIEW_WIDTH         = 250
+
+# If the EXT_LINKS_IN_WINDOW option is set to YES, doxygen will open links to
+# external symbols imported via tag files in a separate window.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+EXT_LINKS_IN_WINDOW    = NO
+
+# If the OBFUSCATE_EMAILS tag is set to YES, doxygen will obfuscate email
+# addresses.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+OBFUSCATE_EMAILS       = YES
+
+# If the HTML_FORMULA_FORMAT option is set to svg, doxygen will use the pdf2svg
+# tool (see https://github.com/dawbarton/pdf2svg) or inkscape (see
+# https://inkscape.org) to generate formulas as SVG images instead of PNGs for
+# the HTML output. These images will generally look nicer at scaled resolutions.
+# Possible values are: png (the default) and svg (looks nicer but requires the
+# pdf2svg or inkscape tool).
+# The default value is: png.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_FORMULA_FORMAT    = svg
+
+# Use this tag to change the font size of LaTeX formulas included as images in
+# the HTML documentation. When you change the font size after a successful
+# doxygen run you need to manually remove any form_*.png images from the HTML
+# output directory to force them to be regenerated.
+# Minimum value: 8, maximum value: 50, default value: 10.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+FORMULA_FONTSIZE       = 10
+
+# Use the FORMULA_TRANSPARENT tag to determine whether or not the images
+# generated for formulas are transparent PNGs. Transparent PNGs are not
+# supported properly for IE 6.0, but are supported on all modern browsers.
+#
+# Note that when changing this option you need to delete any form_*.png files in
+# the HTML output directory before the changes have effect.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+FORMULA_TRANSPARENT    = YES
+
+# The FORMULA_MACROFILE can contain LaTeX \newcommand and \renewcommand commands
+# to create new LaTeX commands to be used in formulas as building blocks. See
+# the section "Including formulas" for details.
+
+FORMULA_MACROFILE      =
+
+# Enable the USE_MATHJAX option to render LaTeX formulas using MathJax (see
+# https://www.mathjax.org) which uses client side JavaScript for the rendering
+# instead of using pre-rendered bitmaps. Use this if you do not have LaTeX
+# installed or if you want to formulas look prettier in the HTML output. When
+# enabled you may also need to install MathJax separately and configure the path
+# to it using the MATHJAX_RELPATH option.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+USE_MATHJAX            = NO
+
+# With MATHJAX_VERSION it is possible to specify the MathJax version to be used.
+# Note that the different versions of MathJax have different requirements with
+# regards to the different settings, so it is possible that also other MathJax
+# settings have to be changed when switching between the different MathJax
+# versions.
+# Possible values are: MathJax_2 and MathJax_3.
+# The default value is: MathJax_2.
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_VERSION        = MathJax_2
+
+# When MathJax is enabled you can set the default output format to be used for
+# the MathJax output. For more details about the output format see MathJax
+# version 2 (see:
+# http://docs.mathjax.org/en/v2.7-latest/output.html) and MathJax version 3
+# (see:
+# http://docs.mathjax.org/en/latest/web/components/output.html).
+# Possible values are: HTML-CSS (which is slower, but has the best
+# compatibility. This is the name for Mathjax version 2, for MathJax version 3
+# this will be translated into chtml), NativeMML (i.e. MathML. Only supported
+# for NathJax 2. For MathJax version 3 chtml will be used instead.), chtml (This
+# is the name for Mathjax version 3, for MathJax version 2 this will be
+# translated into HTML-CSS) and SVG.
+# The default value is: HTML-CSS.
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_FORMAT         = HTML-CSS
+
+# When MathJax is enabled you need to specify the location relative to the HTML
+# output directory using the MATHJAX_RELPATH option. The destination directory
+# should contain the MathJax.js script. For instance, if the mathjax directory
+# is located at the same level as the HTML output directory, then
+# MATHJAX_RELPATH should be ../mathjax. The default value points to the MathJax
+# Content Delivery Network so you can quickly see the result without installing
+# MathJax. However, it is strongly recommended to install a local copy of
+# MathJax from https://www.mathjax.org before deployment. The default value is:
+# - in case of MathJax version 2: https://cdn.jsdelivr.net/npm/mathjax@2
+# - in case of MathJax version 3: https://cdn.jsdelivr.net/npm/mathjax@3
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_RELPATH        = http://cdn.mathjax.org/mathjax/latest
+
+# The MATHJAX_EXTENSIONS tag can be used to specify one or more MathJax
+# extension names that should be enabled during MathJax rendering. For example
+# for MathJax version 2 (see
+# https://docs.mathjax.org/en/v2.7-latest/tex.html#tex-and-latex-extensions):
+# MATHJAX_EXTENSIONS = TeX/AMSmath TeX/AMSsymbols
+# For example for MathJax version 3 (see
+# http://docs.mathjax.org/en/latest/input/tex/extensions/index.html):
+# MATHJAX_EXTENSIONS = ams
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_EXTENSIONS     =
+
+# The MATHJAX_CODEFILE tag can be used to specify a file with javascript pieces
+# of code that will be used on startup of the MathJax code. See the MathJax site
+# (see:
+# http://docs.mathjax.org/en/v2.7-latest/output.html) for more details. For an
+# example see the documentation.
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_CODEFILE       =
+
+# When the SEARCHENGINE tag is enabled doxygen will generate a search box for
+# the HTML output. The underlying search engine uses javascript and DHTML and
+# should work on any modern browser. Note that when using HTML help
+# (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets (GENERATE_DOCSET)
+# there is already a search function so this one should typically be disabled.
+# For large projects the javascript based search engine can be slow, then
+# enabling SERVER_BASED_SEARCH may provide a better solution. It is possible to
+# search using the keyboard; to jump to the search box use <access key> + S
+# (what the <access key> is depends on the OS and browser, but it is typically
+# <CTRL>, <ALT>/<option>, or both). Inside the search box use the <cursor down
+# key> to jump into the search results window, the results can be navigated
+# using the <cursor keys>. Press <Enter> to select an item or <escape> to cancel
+# the search. The filter options can be selected when the cursor is inside the
+# search box by pressing <Shift>+<cursor down>. Also here use the <cursor keys>
+# to select a filter and <Enter> or <escape> to activate or cancel the filter
+# option.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+SEARCHENGINE           = NO
+
+# When the SERVER_BASED_SEARCH tag is enabled the search engine will be
+# implemented using a web server instead of a web client using JavaScript. There
+# are two flavors of web server based searching depending on the EXTERNAL_SEARCH
+# setting. When disabled, doxygen will generate a PHP script for searching and
+# an index file used by the script. When EXTERNAL_SEARCH is enabled the indexing
+# and searching needs to be provided by external tools. See the section
+# "External Indexing and Searching" for details.
+# The default value is: NO.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+SERVER_BASED_SEARCH    = NO
+
+# When EXTERNAL_SEARCH tag is enabled doxygen will no longer generate the PHP
+# script for searching. Instead the search results are written to an XML file
+# which needs to be processed by an external indexer. Doxygen will invoke an
+# external search engine pointed to by the SEARCHENGINE_URL option to obtain the
+# search results.
+#
+# Doxygen ships with an example indexer (doxyindexer) and search engine
+# (doxysearch.cgi) which are based on the open source search engine library
+# Xapian (see:
+# https://xapian.org/).
+#
+# See the section "External Indexing and Searching" for details.
+# The default value is: NO.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+EXTERNAL_SEARCH        = NO
+
+# The SEARCHENGINE_URL should point to a search engine hosted by a web server
+# which will return the search results when EXTERNAL_SEARCH is enabled.
+#
+# Doxygen ships with an example indexer (doxyindexer) and search engine
+# (doxysearch.cgi) which are based on the open source search engine library
+# Xapian (see:
+# https://xapian.org/). See the section "External Indexing and Searching" for
+# details.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+SEARCHENGINE_URL       =
+
+# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the unindexed
+# search data is written to a file for indexing by an external tool. With the
+# SEARCHDATA_FILE tag the name of this file can be specified.
+# The default file is: searchdata.xml.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+SEARCHDATA_FILE        = searchdata.xml
+
+# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the
+# EXTERNAL_SEARCH_ID tag can be used as an identifier for the project. This is
+# useful in combination with EXTRA_SEARCH_MAPPINGS to search through multiple
+# projects and redirect the results back to the right project.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+EXTERNAL_SEARCH_ID     =
+
+# The EXTRA_SEARCH_MAPPINGS tag can be used to enable searching through doxygen
+# projects other than the one defined by this configuration file, but that are
+# all added to the same external search index. Each project needs to have a
+# unique id set via EXTERNAL_SEARCH_ID. The search mapping then maps the id of
+# to a relative location where the documentation can be found. The format is:
+# EXTRA_SEARCH_MAPPINGS = tagname1=loc1 tagname2=loc2 ...
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+EXTRA_SEARCH_MAPPINGS  =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_LATEX tag is set to YES, doxygen will generate LaTeX output.
+# The default value is: YES.
+
+GENERATE_LATEX         = NO
+
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: latex.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_OUTPUT           = latex
+
+# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
+# invoked.
+#
+# Note that when not enabling USE_PDFLATEX the default is latex when enabling
+# USE_PDFLATEX the default is pdflatex and when in the later case latex is
+# chosen this is overwritten by pdflatex. For specific output languages the
+# default can have been set differently, this depends on the implementation of
+# the output language.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_CMD_NAME         = latex
+
+# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to generate
+# index for LaTeX.
+# Note: This tag is used in the Makefile / make.bat.
+# See also: LATEX_MAKEINDEX_CMD for the part in the generated output file
+# (.tex).
+# The default file is: makeindex.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+MAKEINDEX_CMD_NAME     = makeindex
+
+# The LATEX_MAKEINDEX_CMD tag can be used to specify the command name to
+# generate index for LaTeX. In case there is no backslash (\) as first character
+# it will be automatically added in the LaTeX code.
+# Note: This tag is used in the generated output file (.tex).
+# See also: MAKEINDEX_CMD_NAME for the part in the Makefile / make.bat.
+# The default value is: makeindex.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_MAKEINDEX_CMD    = makeindex
+
+# If the COMPACT_LATEX tag is set to YES, doxygen generates more compact LaTeX
+# documents. This may be useful for small projects and may help to save some
+# trees in general.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+COMPACT_LATEX          = NO
+
+# The PAPER_TYPE tag can be used to set the paper type that is used by the
+# printer.
+# Possible values are: a4 (210 x 297 mm), letter (8.5 x 11 inches), legal (8.5 x
+# 14 inches) and executive (7.25 x 10.5 inches).
+# The default value is: a4.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+PAPER_TYPE             = a4
+
+# The EXTRA_PACKAGES tag can be used to specify one or more LaTeX package names
+# that should be included in the LaTeX output. The package can be specified just
+# by its name or with the correct syntax as to be used with the LaTeX
+# \usepackage command. To get the times font for instance you can specify :
+# EXTRA_PACKAGES=times or EXTRA_PACKAGES={times}
+# To use the option intlimits with the amsmath package you can specify:
+# EXTRA_PACKAGES=[intlimits]{amsmath}
+# If left blank no extra packages will be included.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+EXTRA_PACKAGES         =
+
+# The LATEX_HEADER tag can be used to specify a user-defined LaTeX header for
+# the generated LaTeX document. The header should contain everything until the
+# first chapter. If it is left blank doxygen will generate a standard header. It
+# is highly recommended to start with a default header using
+# doxygen -w latex new_header.tex new_footer.tex new_stylesheet.sty
+# and then modify the file new_header.tex. See also section "Doxygen usage" for
+# information on how to generate the default header that doxygen normally uses.
+#
+# Note: Only use a user-defined header if you know what you are doing!
+# Note: The header is subject to change so you typically have to regenerate the
+# default header when upgrading to a newer version of doxygen. The following
+# commands have a special meaning inside the header (and footer): For a
+# description of the possible markers and block names see the documentation.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_HEADER           =
+
+# The LATEX_FOOTER tag can be used to specify a user-defined LaTeX footer for
+# the generated LaTeX document. The footer should contain everything after the
+# last chapter. If it is left blank doxygen will generate a standard footer. See
+# LATEX_HEADER for more information on how to generate a default footer and what
+# special commands can be used inside the footer. See also section "Doxygen
+# usage" for information on how to generate the default footer that doxygen
+# normally uses. Note: Only use a user-defined footer if you know what you are
+# doing!
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_FOOTER           =
+
+# The LATEX_EXTRA_STYLESHEET tag can be used to specify additional user-defined
+# LaTeX style sheets that are included after the standard style sheets created
+# by doxygen. Using this option one can overrule certain style aspects. Doxygen
+# will copy the style sheet files to the output directory.
+# Note: The order of the extra style sheet files is of importance (e.g. the last
+# style sheet in the list overrules the setting of the previous ones in the
+# list).
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_EXTRA_STYLESHEET =
+
+# The LATEX_EXTRA_FILES tag can be used to specify one or more extra images or
+# other source files which should be copied to the LATEX_OUTPUT output
+# directory. Note that the files will be copied as-is; there are no commands or
+# markers available.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_EXTRA_FILES      =
+
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated is
+# prepared for conversion to PDF (using ps2pdf or pdflatex). The PDF file will
+# contain links (just like the HTML output) instead of page references. This
+# makes the output suitable for online browsing using a PDF viewer.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+PDF_HYPERLINKS         = YES
+
+# If the USE_PDFLATEX tag is set to YES, doxygen will use the engine as
+# specified with LATEX_CMD_NAME to generate the PDF file directly from the LaTeX
+# files. Set this option to YES, to get a higher quality PDF documentation.
+#
+# See also section LATEX_CMD_NAME for selecting the engine.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+USE_PDFLATEX           = YES
+
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \batchmode
+# command to the generated LaTeX files. This will instruct LaTeX to keep running
+# if errors occur, instead of asking the user for help.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_BATCHMODE        = NO
+
+# If the LATEX_HIDE_INDICES tag is set to YES then doxygen will not include the
+# index chapters (such as File Index, Compound Index, etc.) in the output.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_HIDE_INDICES     = NO
+
+# The LATEX_BIB_STYLE tag can be used to specify the style to use for the
+# bibliography, e.g. plainnat, or ieeetr. See
+# https://en.wikipedia.org/wiki/BibTeX and \cite for more info.
+# The default value is: plain.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_BIB_STYLE        = plain
+
+# If the LATEX_TIMESTAMP tag is set to YES then the footer of each generated
+# page will contain the date and time when the page was generated. Setting this
+# to NO can help when comparing the output of multiple runs.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_TIMESTAMP        = NO
+
+# The LATEX_EMOJI_DIRECTORY tag is used to specify the (relative or absolute)
+# path from which the emoji images will be read. If a relative path is entered,
+# it will be relative to the LATEX_OUTPUT directory. If left blank the
+# LATEX_OUTPUT directory will be used.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_EMOJI_DIRECTORY  =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the RTF output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_RTF tag is set to YES, doxygen will generate RTF output. The
+# RTF output is optimized for Word 97 and may not look too pretty with other RTF
+# readers/editors.
+# The default value is: NO.
+
+GENERATE_RTF           = NO
+
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: rtf.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_OUTPUT             = rtf
+
+# If the COMPACT_RTF tag is set to YES, doxygen generates more compact RTF
+# documents. This may be useful for small projects and may help to save some
+# trees in general.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+COMPACT_RTF            = NO
+
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated will
+# contain hyperlink fields. The RTF file will contain links (just like the HTML
+# output) instead of page references. This makes the output suitable for online
+# browsing using Word or some other Word compatible readers that support those
+# fields.
+#
+# Note: WordPad (write) and others do not support links.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_HYPERLINKS         = NO
+
+# Load stylesheet definitions from file. Syntax is similar to doxygen's
+# configuration file, i.e. a series of assignments. You only have to provide
+# replacements, missing definitions are set to their default value.
+#
+# See also section "Doxygen usage" for information on how to generate the
+# default style sheet that doxygen normally uses.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_STYLESHEET_FILE    =
+
+# Set optional variables used in the generation of an RTF document. Syntax is
+# similar to doxygen's configuration file. A template extensions file can be
+# generated using doxygen -e rtf extensionFile.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_EXTENSIONS_FILE    =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the man page output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_MAN tag is set to YES, doxygen will generate man pages for
+# classes and files.
+# The default value is: NO.
+
+GENERATE_MAN           = NO
+
+# The MAN_OUTPUT tag is used to specify where the man pages will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it. A directory man3 will be created inside the directory specified by
+# MAN_OUTPUT.
+# The default directory is: man.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_OUTPUT             = man
+
+# The MAN_EXTENSION tag determines the extension that is added to the generated
+# man pages. In case the manual section does not start with a number, the number
+# 3 is prepended. The dot (.) at the beginning of the MAN_EXTENSION tag is
+# optional.
+# The default value is: .3.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_EXTENSION          = .3
+
+# The MAN_SUBDIR tag determines the name of the directory created within
+# MAN_OUTPUT in which the man pages are placed. If defaults to man followed by
+# MAN_EXTENSION with the initial . removed.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_SUBDIR             =
+
+# If the MAN_LINKS tag is set to YES and doxygen generates man output, then it
+# will generate one additional man file for each entity documented in the real
+# man page(s). These additional files only source the real man page, but without
+# them the man command would be unable to find the correct page.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_LINKS              = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the XML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_XML tag is set to YES, doxygen will generate an XML file that
+# captures the structure of the code including all documentation.
+# The default value is: NO.
+
+GENERATE_XML           = NO
+
+# The XML_OUTPUT tag is used to specify where the XML pages will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: xml.
+# This tag requires that the tag GENERATE_XML is set to YES.
+
+XML_OUTPUT             = xml
+
+# If the XML_PROGRAMLISTING tag is set to YES, doxygen will dump the program
+# listings (including syntax highlighting and cross-referencing information) to
+# the XML output. Note that enabling this will significantly increase the size
+# of the XML output.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_XML is set to YES.
+
+XML_PROGRAMLISTING     = YES
+
+# If the XML_NS_MEMB_FILE_SCOPE tag is set to YES, doxygen will include
+# namespace members in file scope as well, matching the HTML output.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_XML is set to YES.
+
+XML_NS_MEMB_FILE_SCOPE = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the DOCBOOK output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_DOCBOOK tag is set to YES, doxygen will generate Docbook files
+# that can be used to generate PDF.
+# The default value is: NO.
+
+GENERATE_DOCBOOK       = NO
+
+# The DOCBOOK_OUTPUT tag is used to specify where the Docbook pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be put in
+# front of it.
+# The default directory is: docbook.
+# This tag requires that the tag GENERATE_DOCBOOK is set to YES.
+
+DOCBOOK_OUTPUT         = docbook
+
+#---------------------------------------------------------------------------
+# Configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_AUTOGEN_DEF tag is set to YES, doxygen will generate an
+# AutoGen Definitions (see http://autogen.sourceforge.net/) file that captures
+# the structure of the code including all documentation. Note that this feature
+# is still experimental and incomplete at the moment.
+# The default value is: NO.
+
+GENERATE_AUTOGEN_DEF   = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_PERLMOD tag is set to YES, doxygen will generate a Perl module
+# file that captures the structure of the code including all documentation.
+#
+# Note that this feature is still experimental and incomplete at the moment.
+# The default value is: NO.
+
+GENERATE_PERLMOD       = NO
+
+# If the PERLMOD_LATEX tag is set to YES, doxygen will generate the necessary
+# Makefile rules, Perl scripts and LaTeX code to be able to generate PDF and DVI
+# output from the Perl module output.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_PERLMOD is set to YES.
+
+PERLMOD_LATEX          = NO
+
+# If the PERLMOD_PRETTY tag is set to YES, the Perl module output will be nicely
+# formatted so it can be parsed by a human reader. This is useful if you want to
+# understand what is going on. On the other hand, if this tag is set to NO, the
+# size of the Perl module output will be much smaller and Perl will parse it
+# just the same.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_PERLMOD is set to YES.
+
+PERLMOD_PRETTY         = YES
+
+# The names of the make variables in the generated doxyrules.make file are
+# prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. This is useful
+# so different doxyrules.make files included by the same Makefile don't
+# overwrite each other's variables.
+# This tag requires that the tag GENERATE_PERLMOD is set to YES.
+
+PERLMOD_MAKEVAR_PREFIX =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor
+#---------------------------------------------------------------------------
+
+# If the ENABLE_PREPROCESSING tag is set to YES, doxygen will evaluate all
+# C-preprocessor directives found in the sources and include files.
+# The default value is: YES.
+
+ENABLE_PREPROCESSING   = YES
+
+# If the MACRO_EXPANSION tag is set to YES, doxygen will expand all macro names
+# in the source code. If set to NO, only conditional compilation will be
+# performed. Macro expansion can be done in a controlled way by setting
+# EXPAND_ONLY_PREDEF to YES.
+# The default value is: NO.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+MACRO_EXPANSION        = YES
+
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then
+# the macro expansion is limited to the macros specified with the PREDEFINED and
+# EXPAND_AS_DEFINED tags.
+# The default value is: NO.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+EXPAND_ONLY_PREDEF     = YES
+
+# If the SEARCH_INCLUDES tag is set to YES, the include files in the
+# INCLUDE_PATH will be searched if a #include is found.
+# The default value is: YES.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+SEARCH_INCLUDES        = YES
+
+# The INCLUDE_PATH tag can be used to specify one or more directories that
+# contain include files that are not input files but should be processed by the
+# preprocessor.
+# This tag requires that the tag SEARCH_INCLUDES is set to YES.
+
+INCLUDE_PATH           =
+
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
+# patterns (like *.h and *.hpp) to filter out the header-files in the
+# directories. If left blank, the patterns specified with FILE_PATTERNS will be
+# used.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+INCLUDE_FILE_PATTERNS  =
+
+# The PREDEFINED tag can be used to specify one or more macro names that are
+# defined before the preprocessor is started (similar to the -D option of e.g.
+# gcc). The argument of the tag is a list of macros of the form: name or
+# name=definition (no spaces). If the definition and the "=" are omitted, "=1"
+# is assumed. To prevent a macro definition from being undefined via #undef or
+# recursively expanded use the := operator instead of the = operator.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+PREDEFINED             = __attribute__((unused))=
+
+# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
+# tag can be used to specify a list of macro names that should be expanded. The
+# macro definition that is found in the sources will be used. Use the PREDEFINED
+# tag if you want to use a different macro definition that overrules the
+# definition found in the source code.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+EXPAND_AS_DEFINED      =
+
+# If the SKIP_FUNCTION_MACROS tag is set to YES then doxygen's preprocessor will
+# remove all references to function-like macros that are alone on a line, have
+# an all uppercase name, and do not end with a semicolon. Such function macros
+# are typically used for boiler-plate code, and will confuse the parser if not
+# removed.
+# The default value is: YES.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+SKIP_FUNCTION_MACROS   = YES
+
+#---------------------------------------------------------------------------
+# Configuration options related to external references
+#---------------------------------------------------------------------------
+
+# The TAGFILES tag can be used to specify one or more tag files. For each tag
+# file the location of the external documentation should be added. The format of
+# a tag file without this location is as follows:
+# TAGFILES = file1 file2 ...
+# Adding location for the tag files is done as follows:
+# TAGFILES = file1=loc1 "file2 = loc2" ...
+# where loc1 and loc2 can be relative or absolute paths or URLs. See the
+# section "Linking to external documentation" for more information about the use
+# of tag files.
+# Note: Each tag file must have a unique name (where the name does NOT include
+# the path). If a tag file is not located in the directory in which doxygen is
+# run, you must also specify the path to the tagfile here.
+
+TAGFILES               =
+
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create a
+# tag file that is based on the input files it reads. See section "Linking to
+# external documentation" for more information about the usage of tag files.
+
+GENERATE_TAGFILE       =
+
+# If the ALLEXTERNALS tag is set to YES, all external class will be listed in
+# the class index. If set to NO, only the inherited external classes will be
+# listed.
+# The default value is: NO.
+
+ALLEXTERNALS           = NO
+
+# If the EXTERNAL_GROUPS tag is set to YES, all external groups will be listed
+# in the modules index. If set to NO, only the current project's groups will be
+# listed.
+# The default value is: YES.
+
+EXTERNAL_GROUPS        = YES
+
+# If the EXTERNAL_PAGES tag is set to YES, all external pages will be listed in
+# the related pages index. If set to NO, only the current project's pages will
+# be listed.
+# The default value is: YES.
+
+EXTERNAL_PAGES         = YES
+
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool
+#---------------------------------------------------------------------------
+
+# You can include diagrams made with dia in doxygen documentation. Doxygen will
+# then run dia to produce the diagram and insert it in the documentation. The
+# DIA_PATH tag allows you to specify the directory where the dia binary resides.
+# If left empty dia is assumed to be found in the default search path.
+
+DIA_PATH               =
+
+# If set to YES the inheritance and collaboration graphs will hide inheritance
+# and usage relations if the target is undocumented or is not a class.
+# The default value is: YES.
+
+HIDE_UNDOC_RELATIONS   = YES
+
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
+# available from the path. This tool is part of Graphviz (see:
+# http://www.graphviz.org/), a graph visualization toolkit from AT&T and Lucent
+# Bell Labs. The other options in this section have no effect if this option is
+# set to NO
+# The default value is: NO.
+
+HAVE_DOT               = NO
+
+# The DOT_NUM_THREADS specifies the number of dot invocations doxygen is allowed
+# to run in parallel. When set to 0 doxygen will base this on the number of
+# processors available in the system. You can set it explicitly to a value
+# larger than 0 to get control over the balance between CPU load and processing
+# speed.
+# Minimum value: 0, maximum value: 32, default value: 0.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_NUM_THREADS        = 0
+
+# When you want a differently looking font in the dot files that doxygen
+# generates you can specify the font name using DOT_FONTNAME. You need to make
+# sure dot is able to find the font, which can be done by putting it in a
+# standard location or by setting the DOTFONTPATH environment variable or by
+# setting DOT_FONTPATH to the directory containing the font.
+# The default value is: Helvetica.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_FONTNAME           = Helvetica
+
+# The DOT_FONTSIZE tag can be used to set the size (in points) of the font of
+# dot graphs.
+# Minimum value: 4, maximum value: 24, default value: 10.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_FONTSIZE           = 10
+
+# By default doxygen will tell dot to use the default font as specified with
+# DOT_FONTNAME. If you specify a different font using DOT_FONTNAME you can set
+# the path where dot can find it using this tag.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_FONTPATH           =
+
+# If the CLASS_GRAPH tag is set to YES (or GRAPH) then doxygen will generate a
+# graph for each documented class showing the direct and indirect inheritance
+# relations. In case HAVE_DOT is set as well dot will be used to draw the graph,
+# otherwise the built-in generator will be used. If the CLASS_GRAPH tag is set
+# to TEXT the direct and indirect inheritance relations will be shown as texts /
+# links.
+# Possible values are: NO, YES, TEXT and GRAPH.
+# The default value is: YES.
+
+CLASS_GRAPH            = YES
+
+# If the COLLABORATION_GRAPH tag is set to YES then doxygen will generate a
+# graph for each documented class showing the direct and indirect implementation
+# dependencies (inheritance, containment, and class references variables) of the
+# class with other documented classes.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+COLLABORATION_GRAPH    = YES
+
+# If the GROUP_GRAPHS tag is set to YES then doxygen will generate a graph for
+# groups, showing the direct groups dependencies.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+GROUP_GRAPHS           = YES
+
+# If the UML_LOOK tag is set to YES, doxygen will generate inheritance and
+# collaboration diagrams in a style similar to the OMG's Unified Modeling
+# Language.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+UML_LOOK               = NO
+
+# If the UML_LOOK tag is enabled, the fields and methods are shown inside the
+# class node. If there are many fields or methods and many nodes the graph may
+# become too big to be useful. The UML_LIMIT_NUM_FIELDS threshold limits the
+# number of items for each type to make the size more manageable. Set this to 0
+# for no limit. Note that the threshold may be exceeded by 50% before the limit
+# is enforced. So when you set the threshold to 10, up to 15 fields may appear,
+# but if the number exceeds 15, the total amount of fields shown is limited to
+# 10.
+# Minimum value: 0, maximum value: 100, default value: 10.
+# This tag requires that the tag UML_LOOK is set to YES.
+
+UML_LIMIT_NUM_FIELDS   = 10
+
+# If the DOT_UML_DETAILS tag is set to NO, doxygen will show attributes and
+# methods without types and arguments in the UML graphs. If the DOT_UML_DETAILS
+# tag is set to YES, doxygen will add type and arguments for attributes and
+# methods in the UML graphs. If the DOT_UML_DETAILS tag is set to NONE, doxygen
+# will not generate fields with class member information in the UML graphs. The
+# class diagrams will look similar to the default class diagrams but using UML
+# notation for the relationships.
+# Possible values are: NO, YES and NONE.
+# The default value is: NO.
+# This tag requires that the tag UML_LOOK is set to YES.
+
+DOT_UML_DETAILS        = NO
+
+# The DOT_WRAP_THRESHOLD tag can be used to set the maximum number of characters
+# to display on a single line. If the actual line length exceeds this threshold
+# significantly it will wrapped across multiple lines. Some heuristics are apply
+# to avoid ugly line breaks.
+# Minimum value: 0, maximum value: 1000, default value: 17.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_WRAP_THRESHOLD     = 17
+
+# If the TEMPLATE_RELATIONS tag is set to YES then the inheritance and
+# collaboration graphs will show the relations between templates and their
+# instances.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+TEMPLATE_RELATIONS     = NO
+
+# If the INCLUDE_GRAPH, ENABLE_PREPROCESSING and SEARCH_INCLUDES tags are set to
+# YES then doxygen will generate a graph for each documented file showing the
+# direct and indirect include dependencies of the file with other documented
+# files.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+INCLUDE_GRAPH          = YES
+
+# If the INCLUDED_BY_GRAPH, ENABLE_PREPROCESSING and SEARCH_INCLUDES tags are
+# set to YES then doxygen will generate a graph for each documented file showing
+# the direct and indirect include dependencies of the file with other documented
+# files.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+INCLUDED_BY_GRAPH      = YES
+
+# If the CALL_GRAPH tag is set to YES then doxygen will generate a call
+# dependency graph for every global function or class method.
+#
+# Note that enabling this option will significantly increase the time of a run.
+# So in most cases it will be better to enable call graphs for selected
+# functions only using the \callgraph command. Disabling a call graph can be
+# accomplished by means of the command \hidecallgraph.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+CALL_GRAPH             = NO
+
+# If the CALLER_GRAPH tag is set to YES then doxygen will generate a caller
+# dependency graph for every global function or class method.
+#
+# Note that enabling this option will significantly increase the time of a run.
+# So in most cases it will be better to enable caller graphs for selected
+# functions only using the \callergraph command. Disabling a caller graph can be
+# accomplished by means of the command \hidecallergraph.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+CALLER_GRAPH           = NO
+
+# If the GRAPHICAL_HIERARCHY tag is set to YES then doxygen will graphical
+# hierarchy of all classes instead of a textual one.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+GRAPHICAL_HIERARCHY    = YES
+
+# If the DIRECTORY_GRAPH tag is set to YES then doxygen will show the
+# dependencies a directory has on other directories in a graphical way. The
+# dependency relations are determined by the #include relations between the
+# files in the directories.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DIRECTORY_GRAPH        = YES
+
+# The DIR_GRAPH_MAX_DEPTH tag can be used to limit the maximum number of levels
+# of child directories generated in directory dependency graphs by dot.
+# Minimum value: 1, maximum value: 25, default value: 1.
+# This tag requires that the tag DIRECTORY_GRAPH is set to YES.
+
+DIR_GRAPH_MAX_DEPTH    = 1
+
+# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
+# generated by dot. For an explanation of the image formats see the section
+# output formats in the documentation of the dot tool (Graphviz (see:
+# http://www.graphviz.org/)).
+# Note: If you choose svg you need to set HTML_FILE_EXTENSION to xhtml in order
+# to make the SVG files visible in IE 9+ (other browsers do not have this
+# requirement).
+# Possible values are: png, jpg, gif, svg, png:gd, png:gd:gd, png:cairo,
+# png:cairo:gd, png:cairo:cairo, png:cairo:gdiplus, png:gdiplus and
+# png:gdiplus:gdiplus.
+# The default value is: png.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_IMAGE_FORMAT       = png
+
+# If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
+# enable generation of interactive SVG images that allow zooming and panning.
+#
+# Note that this requires a modern browser other than Internet Explorer. Tested
+# and working are Firefox, Chrome, Safari, and Opera.
+# Note: For IE 9+ you need to set HTML_FILE_EXTENSION to xhtml in order to make
+# the SVG files visible. Older versions of IE do not have SVG support.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+INTERACTIVE_SVG        = NO
+
+# The DOT_PATH tag can be used to specify the path where the dot tool can be
+# found. If left blank, it is assumed the dot tool can be found in the path.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_PATH               =
+
+# The DOTFILE_DIRS tag can be used to specify one or more directories that
+# contain dot files that are included in the documentation (see the \dotfile
+# command).
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOTFILE_DIRS           =
+
+# The MSCFILE_DIRS tag can be used to specify one or more directories that
+# contain msc files that are included in the documentation (see the \mscfile
+# command).
+
+MSCFILE_DIRS           =
+
+# The DIAFILE_DIRS tag can be used to specify one or more directories that
+# contain dia files that are included in the documentation (see the \diafile
+# command).
+
+DIAFILE_DIRS           =
+
+# When using plantuml, the PLANTUML_JAR_PATH tag should be used to specify the
+# path where java can find the plantuml.jar file or to the filename of jar file
+# to be used. If left blank, it is assumed PlantUML is not used or called during
+# a preprocessing step. Doxygen will generate a warning when it encounters a
+# \startuml command in this case and will not generate output for the diagram.
+
+PLANTUML_JAR_PATH      =
+
+# When using plantuml, the PLANTUML_CFG_FILE tag can be used to specify a
+# configuration file for plantuml.
+
+PLANTUML_CFG_FILE      =
+
+# When using plantuml, the specified paths are searched for files specified by
+# the !include statement in a plantuml block.
+
+PLANTUML_INCLUDE_PATH  =
+
+# The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of nodes
+# that will be shown in the graph. If the number of nodes in a graph becomes
+# larger than this value, doxygen will truncate the graph, which is visualized
+# by representing a node as a red box. Note that doxygen if the number of direct
+# children of the root node in a graph is already larger than
+# DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note that
+# the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH.
+# Minimum value: 0, maximum value: 10000, default value: 50.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_GRAPH_MAX_NODES    = 50
+
+# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the graphs
+# generated by dot. A depth value of 3 means that only nodes reachable from the
+# root by following a path via at most 3 edges will be shown. Nodes that lay
+# further from the root node will be omitted. Note that setting this option to 1
+# or 2 may greatly reduce the computation time needed for large code bases. Also
+# note that the size of a graph can be further restricted by
+# DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction.
+# Minimum value: 0, maximum value: 1000, default value: 0.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+MAX_DOT_GRAPH_DEPTH    = 0
+
+# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent
+# background. This is disabled by default, because dot on Windows does not seem
+# to support this out of the box.
+#
+# Warning: Depending on the platform used, enabling this option may lead to
+# badly anti-aliased labels on the edges of a graph (i.e. they become hard to
+# read).
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_TRANSPARENT        = NO
+
+# Set the DOT_MULTI_TARGETS tag to YES to allow dot to generate multiple output
+# files in one run (i.e. multiple -o and -T options on the command line). This
+# makes dot run faster, but since only newer versions of dot (>1.8.10) support
+# this, this feature is disabled by default.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_MULTI_TARGETS      = NO
+
+# If the GENERATE_LEGEND tag is set to YES doxygen will generate a legend page
+# explaining the meaning of the various boxes and arrows in the dot generated
+# graphs.
+# Note: This tag requires that UML_LOOK isn't set, i.e. the doxygen internal
+# graphical representation for inheritance and collaboration diagrams is used.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+GENERATE_LEGEND        = YES
+
+# If the DOT_CLEANUP tag is set to YES, doxygen will remove the intermediate
+# files that are used to generate the various graphs.
+#
+# Note: This setting is not only used for dot files but also for msc temporary
+# files.
+# The default value is: YES.
+
+DOT_CLEANUP            = YES
diff --git a/doc/template/footer.html b/doc/template/footer.html
new file mode 100644
index 0000000..25231b5
--- /dev/null
+++ b/doc/template/footer.html
@@ -0,0 +1,9 @@
+<!-- HTML footer for doxygen 1.8.14-->
+<!-- start footer part -->
+<!--BEGIN !GENERATE_TREEVIEW-->
+<hr class="footer"/><address class="footer"><small>
+$generatedby &#160;<a href="https://www.doxygen.nl/"><b>Doxygen</b></a>
+</small></address>
+<!--END !GENERATE_TREEVIEW-->
+</body>
+</html>
diff --git a/doc/template/header.html b/doc/template/header.html
new file mode 100644
index 0000000..5ededa6
--- /dev/null
+++ b/doc/template/header.html
@@ -0,0 +1,46 @@
+<!-- HTML header for doxygen 1.8.14-->
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
+<meta http-equiv="X-UA-Compatible" content="IE=9"/>
+<meta name="generator" content="Doxygen $doxygenversion"/>
+<meta name="viewport" content="width=device-width, initial-scale=1"/>
+<!--BEGIN PROJECT_NAME--><title>$projectname: $title</title><!--END PROJECT_NAME-->
+<!--BEGIN !PROJECT_NAME--><title>$title</title><!--END !PROJECT_NAME-->
+<link href="$relpath^tabs.css" rel="stylesheet" type="text/css"/>
+<link href="$relpath^$stylesheet" rel="stylesheet" type="text/css" />
+$extrastylesheet
+</head>
+<body>
+<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
+
+<!--BEGIN TITLEAREA-->
+<div id="titlearea">
+<table cellspacing="0" cellpadding="0">
+ <tbody>
+ <tr style="height: 56px;">
+  <!--BEGIN PROJECT_LOGO-->
+  <td id="projectlogo"><img alt="Logo" src="$relpath^$projectlogo"/></td>
+  <!--END PROJECT_LOGO-->
+  <!--BEGIN PROJECT_NAME-->
+  <td id="projectalign" style="padding-left: 0.5em;">
+   <div id="projectname">$projectname
+   <!--BEGIN PROJECT_NUMBER-->&#160;<span id="projectnumber">$projectnumber</span><!--END PROJECT_NUMBER-->
+   </div>
+   <!--BEGIN PROJECT_BRIEF--><div id="projectbrief">$projectbrief</div><!--END PROJECT_BRIEF-->
+  </td>
+  <!--END PROJECT_NAME-->
+  <!--BEGIN !PROJECT_NAME-->
+   <!--BEGIN PROJECT_BRIEF-->
+    <td style="padding-left: 0.5em;">
+    <div id="projectbrief">$projectbrief</div>
+    </td>
+   <!--END PROJECT_BRIEF-->
+  <!--END !PROJECT_NAME-->
+ </tr>
+ </tbody>
+</table>
+</div>
+<!--END TITLEAREA-->
+<!-- end header part -->
diff --git a/doc/template/main_page.cpp b/doc/template/main_page.cpp
new file mode 100644
index 0000000..8c48e37
--- /dev/null
+++ b/doc/template/main_page.cpp
@@ -0,0 +1,27 @@
+////////////////////////////////////////////////////////////
+/// \mainpage
+///
+/// SPNV is a simple viewer for panorama pictures that were created with Hugin.
+/// It uses information from the Hugin project files to properly display the
+/// panorama scenes on screen and to identify and optionally center the scenes'
+/// horizon lines. Pictures of two different panorama projection types, either
+/// the central cylindrical or the equirectangular projection, can be displayed.
+///
+/// Copyright (C) 2022 M. Frohne
+///
+/// SPNV is free software: you can redistribute it and/or modify
+/// it under the terms of the GNU Affero General Public License as published
+/// by the Free Software Foundation, either version 3 of the License,
+/// or (at your option) any later version.
+///
+/// SPNV is distributed in the hope that it will be useful,
+/// but WITHOUT ANY WARRANTY; without even the implied warranty of
+/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+/// See the GNU Affero General Public License for more details.
+///
+/// You should have received a copy of the GNU Affero General Public License
+/// along with SPNV. If not, see <https://www.gnu.org/licenses/>.
+///
+/// \section example Example
+/// For "example" code please look at this project's \p main.cpp.
+////////////////////////////////////////////////////////////
diff --git a/doc/template/style.css b/doc/template/style.css
new file mode 100644
index 0000000..3dc5c37
--- /dev/null
+++ b/doc/template/style.css
@@ -0,0 +1,1596 @@
+/* The standard CSS for doxygen 1.8.14 */
+
+body, table, div, p, dl {
+	font: 400 14px/22px Roboto,sans-serif;
+}
+
+p.reference, p.definition {
+	font: 400 14px/22px Roboto,sans-serif;
+}
+
+/* @group Heading Levels */
+
+h1.groupheader {
+	font-size: 150%;
+}
+
+.title {
+	font: 400 14px/28px Roboto,sans-serif;
+	font-size: 150%;
+	font-weight: bold;
+	margin: 10px 2px;
+}
+
+h2.groupheader {
+	border-bottom: 1px solid #7D9AD5;
+	color: #2B4985;
+	font-size: 150%;
+	font-weight: normal;
+	margin-top: 1.75em;
+	padding-top: 8px;
+	padding-bottom: 4px;
+	width: 100%;
+}
+
+h3.groupheader {
+	font-size: 100%;
+}
+
+h1, h2, h3, h4, h5, h6 {
+	-webkit-transition: text-shadow 0.5s linear;
+	-moz-transition: text-shadow 0.5s linear;
+	-ms-transition: text-shadow 0.5s linear;
+	-o-transition: text-shadow 0.5s linear;
+	transition: text-shadow 0.5s linear;
+	margin-right: 15px;
+}
+
+h1.glow, h2.glow, h3.glow, h4.glow, h5.glow, h6.glow {
+	text-shadow: 0 0 15px cyan;
+}
+
+dt {
+	font-weight: bold;
+}
+
+div.multicol {
+	-moz-column-gap: 1em;
+	-webkit-column-gap: 1em;
+	-moz-column-count: 3;
+	-webkit-column-count: 3;
+}
+
+p.startli, p.startdd {
+	margin-top: 2px;
+}
+
+p.starttd {
+	margin-top: 0px;
+}
+
+p.endli {
+	margin-bottom: 0px;
+}
+
+p.enddd {
+	margin-bottom: 4px;
+}
+
+p.endtd {
+	margin-bottom: 2px;
+}
+
+/* @end */
+
+caption {
+	font-weight: bold;
+}
+
+span.legend {
+        font-size: 70%;
+        text-align: center;
+}
+
+h3.version {
+        font-size: 90%;
+        text-align: center;
+}
+
+div.qindex, div.navtab{
+	background-color: #EAEEF8;
+	border: 1px solid #9CB2DE;
+	text-align: center;
+}
+
+div.qindex, div.navpath {
+	width: 100%;
+	line-height: 140%;
+}
+
+div.navtab {
+	margin-right: 15px;
+}
+
+/* @group Link Styling */
+
+a {
+	color: #315398;
+	font-weight: normal;
+	text-decoration: none;
+}
+
+.contents a:visited {
+	color: #3960B0;
+}
+
+a:hover {
+	text-decoration: underline;
+}
+
+a.qindex {
+	font-weight: bold;
+}
+
+a.qindexHL {
+	font-weight: bold;
+	background-color: #94ACDC;
+	color: #ffffff;
+	border: 1px double #7C99D4;
+}
+
+.contents a.qindexHL:visited {
+        color: #ffffff;
+}
+
+a.el {
+	font-weight: bold;
+}
+
+a.elRef {
+}
+
+a.code, a.code:visited, a.line, a.line:visited {
+	color: #4665A2; 
+}
+
+a.codeRef, a.codeRef:visited, a.lineRef, a.lineRef:visited {
+	color: #4665A2; 
+}
+
+/* @end */
+
+dl.el {
+	margin-left: -1cm;
+}
+
+pre.fragment {
+        border: 1px solid #C4CFE5;
+        background-color: #FBFCFD;
+        padding: 4px 6px;
+        margin: 4px 8px 4px 2px;
+        overflow: auto;
+        word-wrap: break-word;
+        font-size:  9pt;
+        line-height: 125%;
+        font-family: monospace, fixed;
+        font-size: 105%;
+}
+
+div.fragment {
+        padding: 0px;
+        margin: 4px 8px 4px 2px;
+	background-color: #FBFCFD;
+	border: 1px solid #C0CEEA;
+}
+
+div.line {
+	font-family: monospace, fixed;
+        font-size: 13px;
+	min-height: 13px;
+	line-height: 1.0;
+	text-wrap: unrestricted;
+	white-space: -moz-pre-wrap; /* Moz */
+	white-space: -pre-wrap;     /* Opera 4-6 */
+	white-space: -o-pre-wrap;   /* Opera 7 */
+	white-space: pre-wrap;      /* CSS3  */
+	word-wrap: break-word;      /* IE 5.5+ */
+	text-indent: -53px;
+	padding-left: 53px;
+	padding-bottom: 0px;
+	margin: 0px;
+	-webkit-transition-property: background-color, box-shadow;
+	-webkit-transition-duration: 0.5s;
+	-moz-transition-property: background-color, box-shadow;
+	-moz-transition-duration: 0.5s;
+	-ms-transition-property: background-color, box-shadow;
+	-ms-transition-duration: 0.5s;
+	-o-transition-property: background-color, box-shadow;
+	-o-transition-duration: 0.5s;
+	transition-property: background-color, box-shadow;
+	transition-duration: 0.5s;
+}
+
+div.line:after {
+    content:"\000A";
+    white-space: pre;
+}
+
+div.line.glow {
+	background-color: cyan;
+	box-shadow: 0 0 10px cyan;
+}
+
+
+span.lineno {
+	padding-right: 4px;
+	text-align: right;
+	border-right: 2px solid #0F0;
+	background-color: #E8E8E8;
+        white-space: pre;
+}
+span.lineno a {
+	background-color: #D8D8D8;
+}
+
+span.lineno a:hover {
+	background-color: #C8C8C8;
+}
+
+.lineno {
+	-webkit-touch-callout: none;
+	-webkit-user-select: none;
+	-khtml-user-select: none;
+	-moz-user-select: none;
+	-ms-user-select: none;
+	user-select: none;
+}
+
+div.ah, span.ah {
+	background-color: black;
+	font-weight: bold;
+	color: #ffffff;
+	margin-bottom: 3px;
+	margin-top: 3px;
+	padding: 0.2em;
+	border: solid thin #333;
+	border-radius: 0.5em;
+	-webkit-border-radius: .5em;
+	-moz-border-radius: .5em;
+	box-shadow: 2px 2px 3px #999;
+	-webkit-box-shadow: 2px 2px 3px #999;
+	-moz-box-shadow: rgba(0, 0, 0, 0.15) 2px 2px 2px;
+	background-image: -webkit-gradient(linear, left top, left bottom, from(#eee), to(#000),color-stop(0.3, #444));
+	background-image: -moz-linear-gradient(center top, #eee 0%, #444 40%, #000 110%);
+}
+
+div.classindex ul {
+        list-style: none;
+        padding-left: 0;
+}
+
+div.classindex span.ai {
+        display: inline-block;
+}
+
+div.groupHeader {
+	margin-left: 16px;
+	margin-top: 12px;
+	font-weight: bold;
+}
+
+div.groupText {
+	margin-left: 16px;
+	font-style: italic;
+}
+
+body {
+	background-color: white;
+	color: black;
+        margin: 0;
+}
+
+div.contents {
+	margin-top: 10px;
+	margin-left: 12px;
+	margin-right: 8px;
+}
+
+td.indexkey {
+	background-color: #EAEEF8;
+	font-weight: bold;
+	border: 1px solid #C0CEEA;
+	margin: 2px 0px 2px 0;
+	padding: 2px 10px;
+        white-space: nowrap;
+        vertical-align: top;
+}
+
+td.indexvalue {
+	background-color: #EAEEF8;
+	border: 1px solid #C0CEEA;
+	padding: 2px 10px;
+	margin: 2px 0px;
+}
+
+tr.memlist {
+	background-color: #ECF0F9;
+}
+
+p.formulaDsp {
+	text-align: center;
+}
+
+img.formulaDsp {
+	
+}
+
+img.formulaInl {
+	vertical-align: middle;
+}
+
+div.center {
+	text-align: center;
+        margin-top: 0px;
+        margin-bottom: 0px;
+        padding: 0px;
+}
+
+div.center img {
+	border: 0px;
+}
+
+address.footer {
+	text-align: right;
+	padding-right: 12px;
+}
+
+img.footer {
+	border: 0px;
+	vertical-align: middle;
+}
+
+/* @group Code Colorization */
+
+span.keyword {
+	color: #008000
+}
+
+span.keywordtype {
+	color: #604020
+}
+
+span.keywordflow {
+	color: #e08000
+}
+
+span.comment {
+	color: #800000
+}
+
+span.preprocessor {
+	color: #806020
+}
+
+span.stringliteral {
+	color: #002080
+}
+
+span.charliteral {
+	color: #008080
+}
+
+span.vhdldigit { 
+	color: #ff00ff 
+}
+
+span.vhdlchar { 
+	color: #000000 
+}
+
+span.vhdlkeyword { 
+	color: #700070 
+}
+
+span.vhdllogic { 
+	color: #ff0000 
+}
+
+blockquote {
+        background-color: #F6F8FC;
+        border-left: 2px solid #94ACDC;
+        margin: 0 24px 0 4px;
+        padding: 0 12px 0 16px;
+}
+
+/* @end */
+
+/*
+.search {
+	color: #003399;
+	font-weight: bold;
+}
+
+form.search {
+	margin-bottom: 0px;
+	margin-top: 0px;
+}
+
+input.search {
+	font-size: 75%;
+	color: #000080;
+	font-weight: normal;
+	background-color: #e8eef2;
+}
+*/
+
+td.tiny {
+	font-size: 75%;
+}
+
+.dirtab {
+	padding: 4px;
+	border-collapse: collapse;
+	border: 1px solid #9CB2DE;
+}
+
+th.dirtab {
+	background: #EAEEF8;
+	font-weight: bold;
+}
+
+hr {
+	height: 0px;
+	border: none;
+	border-top: 1px solid #3C65B8;
+}
+
+hr.footer {
+	height: 1px;
+}
+
+/* @group Member Descriptions */
+
+table.memberdecls {
+	border-spacing: 0px;
+	padding: 0px;
+}
+
+.memberdecls td, .fieldtable tr {
+	-webkit-transition-property: background-color, box-shadow;
+	-webkit-transition-duration: 0.5s;
+	-moz-transition-property: background-color, box-shadow;
+	-moz-transition-duration: 0.5s;
+	-ms-transition-property: background-color, box-shadow;
+	-ms-transition-duration: 0.5s;
+	-o-transition-property: background-color, box-shadow;
+	-o-transition-duration: 0.5s;
+	transition-property: background-color, box-shadow;
+	transition-duration: 0.5s;
+}
+
+.memberdecls td.glow, .fieldtable tr.glow {
+	background-color: cyan;
+	box-shadow: 0 0 15px cyan;
+}
+
+.mdescLeft, .mdescRight,
+.memItemLeft, .memItemRight,
+.memTemplItemLeft, .memTemplItemRight, .memTemplParams {
+	background-color: #F8FAFD;
+	border: none;
+	margin: 4px;
+	padding: 1px 0 0 8px;
+}
+
+.mdescLeft, .mdescRight {
+	padding: 0px 8px 4px 8px;
+	color: #555;
+}
+
+.memSeparator {
+        border-bottom: 1px solid #DEE4F0;
+        line-height: 1px;
+        margin: 0px;
+        padding: 0px;
+}
+
+.memItemLeft, .memTemplItemLeft {
+        white-space: nowrap;
+}
+
+.memItemRight {
+	width: 100%;
+}
+
+.memTemplParams {
+	color: #3960B0;
+        white-space: nowrap;
+	font-size: 80%;
+}
+
+/* @end */
+
+/* @group Member Details */
+
+/* Styles for detailed member documentation */
+
+.memtitle {
+	padding: 8px;
+	border-top: 1px solid #A1B6E0;
+	border-left: 1px solid #A1B6E0;
+	border-right: 1px solid #A1B6E0;
+	border-top-right-radius: 4px;
+	border-top-left-radius: 4px;
+	margin-bottom: -1px;
+	background-image: url('nav_f.png');
+	background-repeat: repeat-x;
+	background-color: #E0E7F5;
+	line-height: 1.25;
+	font-weight: 300;
+	float:left;
+}
+
+.permalink
+{
+        font-size: 65%;
+        display: inline-block;
+        vertical-align: middle;
+}
+
+.memtemplate {
+	font-size: 80%;
+	color: #3960B0;
+	font-weight: normal;
+	margin-left: 9px;
+}
+
+.memnav {
+	background-color: #EAEEF8;
+	border: 1px solid #9CB2DE;
+	text-align: center;
+	margin: 2px;
+	margin-right: 15px;
+	padding: 2px;
+}
+
+.mempage {
+	width: 100%;
+}
+
+.memitem {
+	padding: 0;
+	margin-bottom: 10px;
+	margin-right: 5px;
+        -webkit-transition: box-shadow 0.5s linear;
+        -moz-transition: box-shadow 0.5s linear;
+        -ms-transition: box-shadow 0.5s linear;
+        -o-transition: box-shadow 0.5s linear;
+        transition: box-shadow 0.5s linear;
+        display: table !important;
+        width: 100%;
+}
+
+.memitem.glow {
+         box-shadow: 0 0 15px cyan;
+}
+
+.memname {
+        font-weight: 400;
+        margin-left: 6px;
+}
+
+.memname td {
+	vertical-align: bottom;
+}
+
+.memproto, dl.reflist dt {
+        border-top: 1px solid #A1B6E0;
+        border-left: 1px solid #A1B6E0;
+        border-right: 1px solid #A1B6E0;
+        padding: 6px 0px 6px 0px;
+        color: #1E325C;
+        font-weight: bold;
+        text-shadow: 0px 1px 1px rgba(255, 255, 255, 0.9);
+        background-color: #DCE4F3;
+        /* opera specific markup */
+        box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.15);
+        border-top-right-radius: 4px;
+        /* firefox specific markup */
+        -moz-box-shadow: rgba(0, 0, 0, 0.15) 5px 5px 5px;
+        -moz-border-radius-topright: 4px;
+        /* webkit specific markup */
+        -webkit-box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.15);
+        -webkit-border-top-right-radius: 4px;
+
+}
+
+.overload {
+        font-family: "courier new",courier,monospace;
+	font-size: 65%;
+}
+
+.memdoc, dl.reflist dd {
+        border-bottom: 1px solid #A1B6E0;      
+        border-left: 1px solid #A1B6E0;      
+        border-right: 1px solid #A1B6E0; 
+        padding: 6px 10px 2px 10px;
+        background-color: #FBFCFD;
+        border-top-width: 0;
+        background-image:url('nav_g.png');
+        background-repeat:repeat-x;
+        background-color: #FFFFFF;
+        /* opera specific markup */
+        border-bottom-left-radius: 4px;
+        border-bottom-right-radius: 4px;
+        box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.15);
+        /* firefox specific markup */
+        -moz-border-radius-bottomleft: 4px;
+        -moz-border-radius-bottomright: 4px;
+        -moz-box-shadow: rgba(0, 0, 0, 0.15) 5px 5px 5px;
+        /* webkit specific markup */
+        -webkit-border-bottom-left-radius: 4px;
+        -webkit-border-bottom-right-radius: 4px;
+        -webkit-box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.15);
+}
+
+dl.reflist dt {
+        padding: 5px;
+}
+
+dl.reflist dd {
+        margin: 0px 0px 10px 0px;
+        padding: 5px;
+}
+
+.paramkey {
+	text-align: right;
+}
+
+.paramtype {
+	white-space: nowrap;
+}
+
+.paramname {
+	color: #602020;
+	white-space: nowrap;
+}
+.paramname em {
+	font-style: normal;
+}
+.paramname code {
+        line-height: 14px;
+}
+
+.params, .retval, .exception, .tparams {
+        margin-left: 0px;
+        padding-left: 0px;
+}       
+
+.params .paramname, .retval .paramname {
+        font-weight: bold;
+        vertical-align: top;
+}
+        
+.params .paramtype {
+        font-style: italic;
+        vertical-align: top;
+}       
+        
+.params .paramdir {
+        font-family: "courier new",courier,monospace;
+        vertical-align: top;
+}
+
+table.mlabels {
+	border-spacing: 0px;
+}
+
+td.mlabels-left {
+	width: 100%;
+	padding: 0px;
+}
+
+td.mlabels-right {
+	vertical-align: bottom;
+	padding: 0px;
+	white-space: nowrap;
+}
+
+span.mlabels {
+        margin-left: 8px;
+}
+
+span.mlabel {
+        background-color: #6689CD;
+        border-top:1px solid #456FC2;
+        border-left:1px solid #456FC2;
+        border-right:1px solid #C0CEEA;
+        border-bottom:1px solid #C0CEEA;
+	text-shadow: none;
+	color: white;
+	margin-right: 4px;
+	padding: 2px 3px;
+	border-radius: 3px;
+	font-size: 7pt;
+	white-space: nowrap;
+	vertical-align: middle;
+}
+
+
+
+/* @end */
+
+/* these are for tree view inside a (index) page */
+
+div.directory {
+        margin: 10px 0px;
+        border-top: 1px solid #94ACDC;
+        border-bottom: 1px solid #94ACDC;
+        width: 100%;
+}
+
+.directory table {
+        border-collapse:collapse;
+}
+
+.directory td {
+        margin: 0px;
+        padding: 0px;
+	vertical-align: top;
+}
+
+.directory td.entry {
+        white-space: nowrap;
+        padding-right: 6px;
+	padding-top: 3px;
+}
+
+.directory td.entry a {
+        outline:none;
+}
+
+.directory td.entry a img {
+        border: none;
+}
+
+.directory td.desc {
+        width: 100%;
+        padding-left: 6px;
+	padding-right: 6px;
+	padding-top: 3px;
+	border-left: 1px solid rgba(0,0,0,0.05);
+}
+
+.directory tr.even {
+	padding-left: 6px;
+	background-color: #F6F8FC;
+}
+
+.directory img {
+	vertical-align: -30%;
+}
+
+.directory .levels {
+        white-space: nowrap;
+        width: 100%;
+        text-align: right;
+        font-size: 9pt;
+}
+
+.directory .levels span {
+        cursor: pointer;
+        padding-left: 2px;
+        padding-right: 2px;
+	color: #315398;
+}
+
+.arrow {
+    color: #94ACDC;
+    -webkit-user-select: none;
+    -khtml-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+    cursor: pointer;
+    font-size: 80%;
+    display: inline-block;
+    width: 16px;
+    height: 22px;
+}
+
+.icon {
+    font-family: Arial, Helvetica;
+    font-weight: bold;
+    font-size: 12px;
+    height: 14px;
+    width: 16px;
+    display: inline-block;
+    background-color: #6689CD;
+    color: white;
+    text-align: center;
+    border-radius: 4px;
+    margin-left: 2px;
+    margin-right: 2px;
+}
+
+.icona {
+    width: 24px;
+    height: 22px;
+    display: inline-block;
+}
+
+.iconfopen {
+    width: 24px;
+    height: 18px;
+    margin-bottom: 4px;
+    background-image:url('folderopen.png');
+    background-position: 0px -4px;
+    background-repeat: repeat-y;
+    vertical-align:top;
+    display: inline-block;
+}
+
+.iconfclosed {
+    width: 24px;
+    height: 18px;
+    margin-bottom: 4px;
+    background-image:url('folderclosed.png');
+    background-position: 0px -4px;
+    background-repeat: repeat-y;
+    vertical-align:top;
+    display: inline-block;
+}
+
+.icondoc {
+    width: 24px;
+    height: 18px;
+    margin-bottom: 4px;
+    background-image:url('doc.png');
+    background-position: 0px -4px;
+    background-repeat: repeat-y;
+    vertical-align:top;
+    display: inline-block;
+}
+
+table.directory {
+    font: 400 14px Roboto,sans-serif;
+}
+
+/* @end */
+
+div.dynheader {
+        margin-top: 8px;
+	-webkit-touch-callout: none;
+	-webkit-user-select: none;
+	-khtml-user-select: none;
+	-moz-user-select: none;
+	-ms-user-select: none;
+	user-select: none;
+}
+
+address {
+	font-style: normal;
+	color: #223A6A;
+}
+
+table.doxtable caption {
+	caption-side: top;
+}
+
+table.doxtable {
+	border-collapse:collapse;
+        margin-top: 4px;
+        margin-bottom: 4px;
+}
+
+table.doxtable td, table.doxtable th {
+	border: 1px solid #243E70;
+	padding: 3px 7px 2px;
+}
+
+table.doxtable th {
+	background-color: #2C4C8A;
+	color: #FFFFFF;
+	font-size: 110%;
+	padding-bottom: 4px;
+	padding-top: 5px;
+}
+
+table.fieldtable {
+        /*width: 100%;*/
+        margin-bottom: 10px;
+        border: 1px solid #A1B6E0;
+        border-spacing: 0px;
+        -moz-border-radius: 4px;
+        -webkit-border-radius: 4px;
+        border-radius: 4px;
+        -moz-box-shadow: rgba(0, 0, 0, 0.15) 2px 2px 2px;
+        -webkit-box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.15);
+        box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.15);
+}
+
+.fieldtable td, .fieldtable th {
+        padding: 3px 7px 2px;
+}
+
+.fieldtable td.fieldtype, .fieldtable td.fieldname {
+        white-space: nowrap;
+        border-right: 1px solid #A1B6E0;
+        border-bottom: 1px solid #A1B6E0;
+        vertical-align: top;
+}
+
+.fieldtable td.fieldname {
+        padding-top: 3px;
+}
+
+.fieldtable td.fielddoc {
+        border-bottom: 1px solid #A1B6E0;
+        /*width: 100%;*/
+}
+
+.fieldtable td.fielddoc p:first-child {
+        margin-top: 0px;
+}       
+        
+.fieldtable td.fielddoc p:last-child {
+        margin-bottom: 2px;
+}
+
+.fieldtable tr:last-child td {
+        border-bottom: none;
+}
+
+.fieldtable th {
+        background-image:url('nav_f.png');
+        background-repeat:repeat-x;
+        background-color: #E0E7F5;
+        font-size: 90%;
+        color: #1E325C;
+        padding-bottom: 4px;
+        padding-top: 5px;
+        text-align:left;
+        font-weight: 400;
+        -moz-border-radius-topleft: 4px;
+        -moz-border-radius-topright: 4px;
+        -webkit-border-top-left-radius: 4px;
+        -webkit-border-top-right-radius: 4px;
+        border-top-left-radius: 4px;
+        border-top-right-radius: 4px;
+        border-bottom: 1px solid #A1B6E0;
+}
+
+
+.tabsearch {
+	top: 0px;
+	left: 10px;
+	height: 36px;
+	background-image: url('tab_b.png');
+	z-index: 101;
+	overflow: hidden;
+	font-size: 13px;
+}
+
+.navpath ul
+{
+	font-size: 11px;
+	background-image:url('tab_b.png');
+	background-repeat:repeat-x;
+	background-position: 0 -5px;
+	height:30px;
+	line-height:30px;
+	color:#809CD5;
+	border:solid 1px #BDCCE9;
+	overflow:hidden;
+	margin:0px;
+	padding:0px;
+}
+
+.navpath li
+{
+	list-style-type:none;
+	float:left;
+	padding-left:10px;
+	padding-right:15px;
+	background-image:url('bc_s.png');
+	background-repeat:no-repeat;
+	background-position:right;
+	color:#2B4A87;
+}
+
+.navpath li.navelem a
+{
+	height:32px;
+	display:block;
+	text-decoration: none;
+	outline: none;
+	color: #203765;
+	font-family: 'Lucida Grande',Geneva,Helvetica,Arial,sans-serif;
+	text-shadow: 0px 1px 1px rgba(255, 255, 255, 0.9);
+	text-decoration: none;        
+}
+
+.navpath li.navelem a:hover
+{
+	color:#5B80CA;
+}
+
+.navpath li.footer
+{
+        list-style-type:none;
+        float:right;
+        padding-left:10px;
+        padding-right:15px;
+        background-image:none;
+        background-repeat:no-repeat;
+        background-position:right;
+        color:#2B4A87;
+        font-size: 8pt;
+}
+
+
+div.summary
+{
+	float: right;
+	font-size: 8pt;
+	padding-right: 5px;
+	width: 50%;
+	text-align: right;
+}       
+
+div.summary a
+{
+	white-space: nowrap;
+}
+
+table.classindex
+{
+        margin: 10px;
+        white-space: nowrap;
+        margin-left: 3%;
+        margin-right: 3%;
+        width: 94%;
+        border: 0;
+        border-spacing: 0; 
+        padding: 0;
+}
+
+div.ingroups
+{
+	font-size: 8pt;
+	width: 50%;
+	text-align: left;
+}
+
+div.ingroups a
+{
+	white-space: nowrap;
+}
+
+div.header
+{
+        background-image:url('nav_h.png');
+        background-repeat:repeat-x;
+	background-color: #F8FAFD;
+	margin:  0px;
+	border-bottom: 1px solid #C0CEEA;
+}
+
+div.headertitle
+{
+	padding: 5px 5px 5px 10px;
+}
+
+dl
+{
+        padding: 0 0 0 10px;
+}
+
+/* dl.note, dl.warning, dl.attention, dl.pre, dl.post, dl.invariant, dl.deprecated, dl.todo, dl.test, dl.bug */
+dl.section
+{
+	margin-left: 0px;
+	padding-left: 0px;
+}
+
+dl.note
+{
+        margin-left:-7px;
+        padding-left: 3px;
+        border-left:4px solid;
+        border-color: #D0C000;
+}
+
+dl.warning, dl.attention
+{
+        margin-left:-7px;
+        padding-left: 3px;
+        border-left:4px solid;
+        border-color: #FF0000;
+}
+
+dl.pre, dl.post, dl.invariant
+{
+        margin-left:-7px;
+        padding-left: 3px;
+        border-left:4px solid;
+        border-color: #00D000;
+}
+
+dl.deprecated
+{
+        margin-left:-7px;
+        padding-left: 3px;
+        border-left:4px solid;
+        border-color: #505050;
+}
+
+dl.todo
+{
+        margin-left:-7px;
+        padding-left: 3px;
+        border-left:4px solid;
+        border-color: #00C0E0;
+}
+
+dl.test
+{
+        margin-left:-7px;
+        padding-left: 3px;
+        border-left:4px solid;
+        border-color: #3030E0;
+}
+
+dl.bug
+{
+        margin-left:-7px;
+        padding-left: 3px;
+        border-left:4px solid;
+        border-color: #C08050;
+}
+
+dl.section dd {
+	margin-bottom: 6px;
+}
+
+
+#projectlogo
+{
+	text-align: center;
+	vertical-align: bottom;
+	border-collapse: separate;
+}
+ 
+#projectlogo img
+{ 
+	border: 0px none;
+}
+ 
+#projectalign
+{
+        vertical-align: middle;
+}
+
+#projectname
+{
+	font: 300% Tahoma, Arial,sans-serif;
+	margin: 0px;
+	padding: 2px 0px;
+}
+    
+#projectbrief
+{
+	font: 120% Tahoma, Arial,sans-serif;
+	margin: 0px;
+	padding: 0px;
+}
+
+#projectnumber
+{
+	font: 50% Tahoma, Arial,sans-serif;
+	margin: 0px;
+	padding: 0px;
+}
+
+#titlearea
+{
+	padding: 0px;
+	margin: 0px;
+	width: 100%;
+	border-bottom: 1px solid #456FC2;
+}
+
+.image
+{
+        text-align: center;
+}
+
+.dotgraph
+{
+        text-align: center;
+}
+
+.mscgraph
+{
+        text-align: center;
+}
+
+.plantumlgraph
+{
+        text-align: center;
+}
+
+.diagraph
+{
+        text-align: center;
+}
+
+.caption
+{
+	font-weight: bold;
+}
+
+div.zoom
+{
+	border: 1px solid #87A2D8;
+}
+
+dl.citelist {
+        margin-bottom:50px;
+}
+
+dl.citelist dt {
+        color:#29467F;
+        float:left;
+        font-weight:bold;
+        margin-right:10px;
+        padding:5px;
+}
+
+dl.citelist dd {
+        margin:2px 0;
+        padding:5px 0;
+}
+
+div.toc {
+        padding: 14px 25px;
+        background-color: #F4F6FB;
+        border: 1px solid #D5DEF1;
+        border-radius: 7px 7px 7px 7px;
+        float: right;
+        height: auto;
+        margin: 0 8px 10px 10px;
+        width: 200px;
+}
+
+div.toc li {
+        background: url("bdwn.png") no-repeat scroll 0 5px transparent;
+        font: 10px/1.2 Verdana,DejaVu Sans,Geneva,sans-serif;
+        margin-top: 5px;
+        padding-left: 10px;
+        padding-top: 2px;
+}
+
+div.toc h3 {
+        font: bold 12px/1.2 Arial,FreeSans,sans-serif;
+	color: #3960B0;
+        border-bottom: 0 none;
+        margin: 0;
+}
+
+div.toc ul {
+        list-style: none outside none;
+        border: medium none;
+        padding: 0px;
+}       
+
+div.toc li.level1 {
+        margin-left: 0px;
+}
+
+div.toc li.level2 {
+        margin-left: 15px;
+}
+
+div.toc li.level3 {
+        margin-left: 30px;
+}
+
+div.toc li.level4 {
+        margin-left: 45px;
+}
+
+.inherit_header {
+        font-weight: bold;
+        color: gray;
+        cursor: pointer;
+	-webkit-touch-callout: none;
+	-webkit-user-select: none;
+	-khtml-user-select: none;
+	-moz-user-select: none;
+	-ms-user-select: none;
+	user-select: none;
+}
+
+.inherit_header td {
+        padding: 6px 0px 2px 5px;
+}
+
+.inherit {
+        display: none;
+}
+
+tr.heading h2 {
+        margin-top: 12px;
+        margin-bottom: 4px;
+}
+
+/* tooltip related style info */
+
+.ttc {
+        position: absolute;
+        display: none;
+}
+
+#powerTip {
+	cursor: default;
+	white-space: nowrap;
+	background-color: white;
+	border: 1px solid gray;
+	border-radius: 4px 4px 4px 4px;
+	box-shadow: 1px 1px 7px gray;
+	display: none;
+	font-size: smaller;
+	max-width: 80%;
+	opacity: 0.9;
+	padding: 1ex 1em 1em;
+	position: absolute;
+	z-index: 2147483647;
+}
+
+#powerTip div.ttdoc {
+        color: grey;
+	font-style: italic;
+}
+
+#powerTip div.ttname a {
+        font-weight: bold;
+}
+
+#powerTip div.ttname {
+        font-weight: bold;
+}
+
+#powerTip div.ttdeci {
+        color: #006318;
+}
+
+#powerTip div {
+        margin: 0px;
+        padding: 0px;
+        font: 12px/16px Roboto,sans-serif;
+}
+
+#powerTip:before, #powerTip:after {
+	content: "";
+	position: absolute;
+	margin: 0px;
+}
+
+#powerTip.n:after,  #powerTip.n:before,
+#powerTip.s:after,  #powerTip.s:before,
+#powerTip.w:after,  #powerTip.w:before,
+#powerTip.e:after,  #powerTip.e:before,
+#powerTip.ne:after, #powerTip.ne:before,
+#powerTip.se:after, #powerTip.se:before,
+#powerTip.nw:after, #powerTip.nw:before,
+#powerTip.sw:after, #powerTip.sw:before {
+	border: solid transparent;
+	content: " ";
+	height: 0;
+	width: 0;
+	position: absolute;
+}
+
+#powerTip.n:after,  #powerTip.s:after,
+#powerTip.w:after,  #powerTip.e:after,
+#powerTip.nw:after, #powerTip.ne:after,
+#powerTip.sw:after, #powerTip.se:after {
+	border-color: rgba(255, 255, 255, 0);
+}
+
+#powerTip.n:before,  #powerTip.s:before,
+#powerTip.w:before,  #powerTip.e:before,
+#powerTip.nw:before, #powerTip.ne:before,
+#powerTip.sw:before, #powerTip.se:before {
+	border-color: rgba(128, 128, 128, 0);
+}
+
+#powerTip.n:after,  #powerTip.n:before,
+#powerTip.ne:after, #powerTip.ne:before,
+#powerTip.nw:after, #powerTip.nw:before {
+	top: 100%;
+}
+
+#powerTip.n:after, #powerTip.ne:after, #powerTip.nw:after {
+	border-top-color: #ffffff;
+	border-width: 10px;
+	margin: 0px -10px;
+}
+#powerTip.n:before {
+	border-top-color: #808080;
+	border-width: 11px;
+	margin: 0px -11px;
+}
+#powerTip.n:after, #powerTip.n:before {
+	left: 50%;
+}
+
+#powerTip.nw:after, #powerTip.nw:before {
+	right: 14px;
+}
+
+#powerTip.ne:after, #powerTip.ne:before {
+	left: 14px;
+}
+
+#powerTip.s:after,  #powerTip.s:before,
+#powerTip.se:after, #powerTip.se:before,
+#powerTip.sw:after, #powerTip.sw:before {
+	bottom: 100%;
+}
+
+#powerTip.s:after, #powerTip.se:after, #powerTip.sw:after {
+	border-bottom-color: #ffffff;
+	border-width: 10px;
+	margin: 0px -10px;
+}
+
+#powerTip.s:before, #powerTip.se:before, #powerTip.sw:before {
+	border-bottom-color: #808080;
+	border-width: 11px;
+	margin: 0px -11px;
+}
+
+#powerTip.s:after, #powerTip.s:before {
+	left: 50%;
+}
+
+#powerTip.sw:after, #powerTip.sw:before {
+	right: 14px;
+}
+
+#powerTip.se:after, #powerTip.se:before {
+	left: 14px;
+}
+
+#powerTip.e:after, #powerTip.e:before {
+	left: 100%;
+}
+#powerTip.e:after {
+	border-left-color: #ffffff;
+	border-width: 10px;
+	top: 50%;
+	margin-top: -10px;
+}
+#powerTip.e:before {
+	border-left-color: #808080;
+	border-width: 11px;
+	top: 50%;
+	margin-top: -11px;
+}
+
+#powerTip.w:after, #powerTip.w:before {
+	right: 100%;
+}
+#powerTip.w:after {
+	border-right-color: #ffffff;
+	border-width: 10px;
+	top: 50%;
+	margin-top: -10px;
+}
+#powerTip.w:before {
+	border-right-color: #808080;
+	border-width: 11px;
+	top: 50%;
+	margin-top: -11px;
+}
+
+@media print
+{
+  #top { display: none; }
+  #side-nav { display: none; }
+  #nav-path { display: none; }
+  body { overflow:visible; }
+  h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
+  .summary { display: none; }
+  .memitem { page-break-inside: avoid; }
+  #doc-content
+  {
+    margin-left:0 !important;
+    height:auto !important;
+    width:auto !important;
+    overflow:inherit;
+    display:inline;
+  }
+}
+
+/* @group Markdown */
+
+/*
+table.markdownTable {
+	border-collapse:collapse;
+        margin-top: 4px;
+        margin-bottom: 4px;
+}
+
+table.markdownTable td, table.markdownTable th {
+	border: 1px solid #243E70;
+	padding: 3px 7px 2px;
+}
+
+table.markdownTableHead tr {
+}
+
+table.markdownTableBodyLeft td, table.markdownTable th {
+	border: 1px solid #243E70;
+	padding: 3px 7px 2px;
+}
+
+th.markdownTableHeadLeft th.markdownTableHeadRight th.markdownTableHeadCenter th.markdownTableHeadNone {
+	background-color: #2C4C8A;
+	color: #FFFFFF;
+	font-size: 110%;
+	padding-bottom: 4px;
+	padding-top: 5px;
+}
+
+th.markdownTableHeadLeft {
+	text-align: left
+}
+
+th.markdownTableHeadRight {
+	text-align: right
+}
+
+th.markdownTableHeadCenter {
+	text-align: center
+}
+*/
+
+table.markdownTable {
+	border-collapse:collapse;
+        margin-top: 4px;
+        margin-bottom: 4px;
+}
+
+table.markdownTable td, table.markdownTable th {
+	border: 1px solid #243E70;
+	padding: 3px 7px 2px;
+}
+
+table.markdownTable tr {
+}
+
+th.markdownTableHeadLeft, th.markdownTableHeadRight, th.markdownTableHeadCenter, th.markdownTableHeadNone {
+	background-color: #374F7F;
+	color: #FFFFFF;
+	font-size: 110%;
+	padding-bottom: 4px;
+	padding-top: 5px;
+}
+
+th.markdownTableHeadLeft, td.markdownTableBodyLeft {
+	text-align: left
+}
+
+th.markdownTableHeadRight, td.markdownTableBodyRight {
+	text-align: right
+}
+
+th.markdownTableHeadCenter, td.markdownTableBodyCenter {
+	text-align: center
+}
+
+
+/* @end */
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..dd213e9
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,193 @@
+/*
+////////////////////////////////////////////////////////////////////////////////////////
+//
+//  This file is part of SPNV, a simple panorama viewer for Hugin panoramas.
+//  Copyright (C) 2022 M. Frohne
+//
+//  SPNV is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License,
+//  or (at your option) any later version.
+//
+//  SPNV is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//  See the GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with SPNV. If not, see <https://www.gnu.org/licenses/>.
+//
+////////////////////////////////////////////////////////////////////////////////////////
+*/
+
+#include "version.h"
+#include "scenemetadata.h"
+#include "panoramawindow.h"
+
+#include <iostream>
+#include <filesystem>
+
+/// \file
+///
+/// \brief The %main.cpp of SPNV.
+///
+/// \details See main() for information about what this does.
+
+/*!
+ * \brief Print usage information.
+ *
+ * Prints a description of the program call and its command line options to stderr.
+ */
+void printHelp()
+{
+    std::string helpString = "USAGE:\n " + std::string(SPNV_PROGRAM_NAME);
+
+    helpString.append(" [--help]");
+    helpString.append(" PANORAMA-PICTURE");
+    helpString.append(" [--pto=HUGIN-FILE | -p HUGIN-FILE]");
+
+    helpString.append("\n\nDESCRIPTION:\n");
+    helpString.append(" If no options are present, displays the panorama scene in PANORAMA-PICTURE using information from "
+                      "previously saved \"PNV\" file (see OPTIONS)\n");
+
+    helpString.append("\nOPTIONS:\n");
+
+    helpString.append(" -h, --help\n        Print a description of the command line options and exit.\n\n");
+    helpString.append(" -p, --pto=HUGIN-FILE\n        Extract information from Hugin project needed to properly display "
+                      "PANORAMA-PICTURE. Save this information to a \"PNV\" file (same basename as PANORAMA-PICTURE) and exit.\n");
+
+    std::cerr<<helpString;
+}
+
+/*!
+ * \brief The main function.
+ *
+ * Parses the command line arguments first and depending on them does the following:
+ *
+ * - Print usage information (see printHelp()), if help requested ("-h" or "--help") or the arguments are invalid.
+ * - If both a picture file and a PTO file (via option "-p" or "--pto=") were provided, read panorama scene meta data
+ *   from PTO file, write it to a "PNV file" and exit (see SceneMetaData::loadFromPTOFile() and SceneMetaData::saveToPNVFile()).
+ *   The PNV file name will be the same as the picture's file name except for the extension being replaced by ".pnv".
+ * - If only a picture file name is present, display the picture's panorama scene with a PanoramaWindow (see PanoramaWindow::run()).
+ *   The required panorama scene meta data will be loaded from the corresponding PNV file (see SceneMetaData::loadFromPNVFile()),
+ *   which is expected to have the same file name as the picture except for the extension being ".pnv".
+ *
+ * \param argc Command line argument count.
+ * \param argv Array of command line arguments.
+ * \return If successful.
+ */
+int main(int argc, const char* argv[])
+{
+    std::vector<std::string> args(argv, argv+argc);
+
+    if (args.empty())
+    {
+        std::cerr<<"ERROR: You are trying to execute the progam in some weird execution environment. Missing argv[0]."<<std::endl;
+        return EXIT_FAILURE;
+    }
+
+    //File names of panorama picture and (optionally) the corresponding Hugin project file
+    std::string picFileName, ptoFileName;
+
+    //Parse command line arguments
+    if (args.size() == 2)
+    {
+        if (args[1] == "-h" || args[1] == "--help")
+        {
+            printHelp();
+            return EXIT_SUCCESS;
+        }
+        else
+            picFileName = args[1];
+    }
+    else if (args.size() == 3)
+    {
+        if (args[2].find("--pto=") != 0)
+            goto __Wrong_Cmd_Arg;
+
+        picFileName = args[1];
+        ptoFileName = args[2].substr(6);
+    }
+    else if (args.size() == 4)
+    {
+        if (args[2] != "-p")
+            goto __Wrong_Cmd_Arg;
+
+        picFileName = args[1];
+        ptoFileName = args[3];
+    }
+    else
+    {
+        __Wrong_Cmd_Arg:
+        std::cerr<<"ERROR: Wrong or missing command line arguments!\n"<<std::endl;
+
+        printHelp();
+
+        return EXIT_FAILURE;
+    }
+
+    //Define PNV file name corresponding to the picture file name (replace extension)
+    std::string pnvFileName;
+    try
+    {
+        std::filesystem::path tPath(picFileName);
+        tPath.replace_extension("pnv");
+        pnvFileName = tPath.string();
+
+        //If no PTO file was specified, there must be an already existing PNV file
+        if (ptoFileName == "" && !std::filesystem::exists(tPath))
+        {
+            std::cerr<<"ERROR: Could not find matching PNV file!"<<std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+    catch (const std::exception& exc)
+    {
+        std::cerr<<"ERROR: Could not find out the PNV file name matching the picture file name!"<<std::endl;
+        std::cerr<<exc.what()<<std::endl;
+        return EXIT_FAILURE;
+    }
+
+    //Setup meta data (loading from file below) required to properly display panorama scene
+    SceneMetaData metaData;
+
+    //If PTO file was specified, load required information and save to custom PNV file
+    if (ptoFileName != "")
+    {
+        if (!metaData.loadFromPTOFile(ptoFileName))
+        {
+            std::cerr<<"ERROR: Could not parse PTO file!"<<std::endl;
+            return EXIT_FAILURE;
+        }
+
+        if (!metaData.saveToPNVFile(pnvFileName))
+        {
+            std::cerr<<"ERROR: Could not save PNV file!"<<std::endl;
+            return EXIT_FAILURE;
+        }
+
+        std::cout<<"Panorama scene meta data written to PNV file \""<<pnvFileName<<"\".\n";
+
+        return EXIT_SUCCESS;
+    }
+    else    //If no PTO file was specified, load required information from matching PNV file
+    {
+        if (!metaData.loadFromPNVFile(pnvFileName))
+        {
+            std::cerr<<"ERROR: Could not parse PNV file!"<<std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    //Create window and display the panorama scene using previously loaded meta data
+
+    PanoramaWindow panoWindow;
+
+    if (!panoWindow.run(picFileName, metaData))
+    {
+        std::cerr<<"ERROR: Could not properly display the panorama scene!"<<std::endl;
+        return EXIT_FAILURE;
+    }
+
+    return EXIT_SUCCESS;
+}
diff --git a/src/panoramawindow.cpp b/src/panoramawindow.cpp
new file mode 100644
index 0000000..8051281
--- /dev/null
+++ b/src/panoramawindow.cpp
@@ -0,0 +1,509 @@
+/*
+////////////////////////////////////////////////////////////////////////////////////////
+//
+//  This file is part of SPNV, a simple panorama viewer for Hugin panoramas.
+//  Copyright (C) 2022 M. Frohne
+//
+//  SPNV is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License,
+//  or (at your option) any later version.
+//
+//  SPNV is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//  See the GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with SPNV. If not, see <https://www.gnu.org/licenses/>.
+//
+////////////////////////////////////////////////////////////////////////////////////////
+*/
+
+#include "panoramawindow.h"
+
+/*!
+ * \brief Constructor.
+ *
+ * Note: Does \e not create a window yet. Use run() to create a window for displaying a panorama scene.
+ */
+PanoramaWindow::PanoramaWindow() :
+    window(),
+    //
+    fileName(""),
+    //
+    panoTexture(),
+    panoSprite(),
+    //
+    projector(nullptr),
+    //
+    mouseDragLockThetaAngle(false)
+{
+}
+
+//Public
+
+/*!
+ * \brief Display a picture as panorama scene in a window.
+ *
+ * Creates a new window to display the panorama scene shown in picture \p pFileName. Required meta information
+ * about the scene (such as field of view etc.) is taken from \p pSceneMetaData (see SceneMetaData) and passed
+ * to Projector, which takes care of all the graphics transformations (see also Projector()).
+ *
+ * The scene perspective can be changed via mouse or keyboard in the following ways:
+ *
+ * - Mouse drag (click + move): Self-explanatory.
+ * - Mouse scroll or plus and minus keys: Zoom in and out (and move vertical view angle if necessary to avoid margins).
+ * - Arrow keys left/right/up/down: Move view angle left/right/up/down about 5 degrees.
+ * - Space key: Vertically center horizon line and adjust zoom if necessary to avoid margins.
+ * - CTRL+'0': Vertically center horizon line and adjust zoom to minimum possible one given the centered horizon.
+ * - '0': Adjust zoom to minimum possible and move vertical view angle if necessary to avoid margins (then possibly non-centered horizon).
+ * - 'H': Adjust zoom for a horizontal field of view of 65 degrees (arbitrary but fixed value).
+ * - 'V': Adjust zoom for a vertical field of view of 45 degrees (arbitrary but fixed value).
+ * - 'L': Toggles whether the vertical view angle is locked while using the mouse drag feature (default: not locked).
+ *
+ * The screen is re-drawn using an updated display projection after every of the aforementioned
+ * movements/changes as well as every time the window is resized (which keeps the vertical field
+ * of view constant and adjusts the horizontal field of view according to the new aspect ratio).
+ *
+ * The window can be closed again via your preferred operating system functions or by pressing CTRL+'W'.
+ *
+ * Fullscreen mode of the window can be toggled by pressing 'F' or F11.
+ *
+ * \param pFileName Panorama picture to load.
+ * \param pSceneMetaData Meta data for panorama scene from \p pFileName.
+ * \return If could successfully load \p pFileName (and picture dimensions match information from \p pSceneMetaData).
+ */
+bool PanoramaWindow::run(const std::string& pFileName, const SceneMetaData& pSceneMetaData)
+{
+    //Create a new projector for the current panorama scene
+    try
+    {
+        projector = std::make_unique<Projector>(pFileName, pSceneMetaData);
+    }
+    catch (const std::runtime_error& exc)
+    {
+        std::cerr<<"ERROR: "<<exc.what()<<std::endl;
+        return false;
+    }
+
+    fileName = pFileName;
+
+    //Setup a window
+
+    bool fullscreenMode = false;
+
+    createWindow(fullscreenMode);
+
+    //Initialize panorama scene with current window size and reset perspective
+
+    updateDisplaySize();
+
+    projector->updateView(0, 0, 0);
+
+    renderPanoramaView();
+
+    //Set proper window title
+    updateWindowTitle();
+
+    //Event loop control flags for performance-intensive "continuous" user interactions (see below)
+    bool windowResizing = false;
+    bool mouseDragging = false;
+
+    //Helper variables for view angle manipulation via mouse drag
+    sf::Vector2f dragInitialMouseAngle;
+    sf::Vector2i dragCurrentMousePos;
+    double dragInitialViewOffsetTheta = 0;
+    double dragInitialViewOffsetPhi = 0;
+
+    //Reset locked theta angle mouse drag mode
+    mouseDragLockThetaAngle = false;
+
+    sf::Event event;
+
+    while (window.isOpen())
+    {
+        /*
+         * Wait for window events (i.e. user interaction) in a loop and process all of them in series.
+         * Depending on control flags, either use
+         * - blocking wait for "normal" operation to reduce CPU load from top-level while loop, or
+         * - non-blocking wait when "continuous" user interactions are going on, because actual logic
+         *   for those is done below the event loop (hence need to exit the loop) in order to skip
+         *   unnecessary, expensive recalculations for each of many consecutive events.
+         */
+        while ((!(mouseDragging || windowResizing) && window.waitEvent(event)) ||
+               ( (mouseDragging || windowResizing) && window.pollEvent(event)))
+        {
+            switch (event.type)
+            {
+                case sf::Event::Closed:
+                {
+                    window.close();
+                    break;
+                }
+                case sf::Event::Resized:
+                {
+                    //Do not resize scene here, but set resize flag so that resizing will be handled once below the event loop after all
+                    //pending events have been processed (this ignores/groups consecutive resize events of a single resize operation)
+                    windowResizing = true;
+                    break;
+                }
+                case sf::Event::MouseWheelScrolled:
+                {
+                    if (event.mouseWheelScroll.delta > 0)
+                        zoomIn();
+                    else if (event.mouseWheelScroll.delta < 0)
+                        zoomOut();
+
+                    break;
+                }
+                case sf::Event::MouseButtonPressed:
+                {
+                    //Enable view angle manipulation via mouse movement, which will be handled below the event loop each time when all
+                    //pending events have been processed (this groups/ignores small consecutive move events from continuous mouse movement)
+                    if (event.mouseButton.button == sf::Mouse::Button::Left)
+                    {
+                        //Set mouse drag flag
+                        mouseDragging = true;
+
+                        //Remember current perspective, current mouse position and associated view angle in order to
+                        //be able to calculate and set a relative perspective change from a changing mouse position
+
+                        dragCurrentMousePos.x = event.mouseButton.x;
+                        dragCurrentMousePos.y = event.mouseButton.y;
+
+                        dragInitialMouseAngle = projector->getViewAngle(dragCurrentMousePos);
+
+                        dragInitialViewOffsetPhi = projector->getOffsetPhi();
+                        dragInitialViewOffsetTheta = projector->getOffsetTheta();
+                    }
+                    break;
+                }
+                case sf::Event::MouseButtonReleased:
+                {
+                    //Disable view angle manipulation via mouse movement again
+                    if (event.mouseButton.button == sf::Mouse::Button::Left)
+                        mouseDragging = false;
+                    break;
+                }
+                case sf::Event::MouseMoved:
+                {
+                    //Capture current mouse position if view angle manipulation via mouse movement is enabled;
+                    //actual movement logic happens below event loop
+                    if (mouseDragging)
+                    {
+                        dragCurrentMousePos.x = event.mouseMove.x;
+                        dragCurrentMousePos.y = event.mouseMove.y;
+                    }
+                    break;
+                }
+                case sf::Event::KeyPressed:
+                {
+                    switch (event.key.code)
+                    {
+                        case sf::Keyboard::Key::Left:
+                        {
+                            //Turn perspective to the left (fixed step size)
+                            projector->updateView(projector->getZoom(),
+                                                  projector->getOffsetPhi() - 5.*M_PI/180.,
+                                                  projector->getOffsetTheta());
+                            renderPanoramaView();
+                            break;
+                        }
+                        case sf::Keyboard::Key::Right:
+                        {
+                            //Turn perspective to the right (fixed step size)
+                            projector->updateView(projector->getZoom(),
+                                                  projector->getOffsetPhi() + 5.*M_PI/180.,
+                                                  projector->getOffsetTheta());
+                            renderPanoramaView();
+                            break;
+                        }
+                        case sf::Keyboard::Key::Up:
+                        {
+                            //Turn perspective upwards (fixed step size)
+                            projector->updateView(projector->getZoom(),
+                                                  projector->getOffsetPhi(),
+                                                  projector->getOffsetTheta() - 5*M_PI/180.);
+                            renderPanoramaView();
+                            break;
+                        }
+                        case sf::Keyboard::Key::Down:
+                        {
+                            //Turn perspective downwards (fixed step size)
+                            projector->updateView(projector->getZoom(),
+                                                  projector->getOffsetPhi(),
+                                                  projector->getOffsetTheta() + 5*M_PI/180.);
+                            renderPanoramaView();
+                            break;
+                        }
+                        case sf::Keyboard::Key::Space:
+                        {
+                            //Center the horizon line and update window title as this might change zoom level
+                            projector->centerHorizon();
+                            updateWindowTitle();
+                            renderPanoramaView();
+                            break;
+                        }
+                        case sf::Keyboard::Key::Add:
+                        {
+                            zoomIn();
+                            break;
+                        }
+                        case sf::Keyboard::Key::Subtract:
+                        {
+                            zoomOut();
+                            break;
+                        }
+                        case sf::Keyboard::Key::Num0:
+                        case sf::Keyboard::Key::Numpad0:
+                        {
+                            //Reset to minimum possible zoom level (!CTRL) or center horizon and reset to minimum possible zoom level
+                            //that can just preserve the centered horizon (CTRL); update window title for resulting zoom level
+                            if (event.key.control)
+                                projector->updateView(-1, projector->getOffsetPhi(), 0);
+                            else
+                                projector->updateView(0, projector->getOffsetPhi(), projector->getOffsetTheta());
+
+                            updateWindowTitle();
+                            renderPanoramaView();
+                            break;
+                        }
+                        case sf::Keyboard::Key::H:
+                        {
+                            //Adjust zoom so that horizontal field of view is 65 degrees; update window title for changed zoom level
+                            projector->updateView(projector->getRequiredZoomFromHFOV(65.f * static_cast<float>(M_PI) / 180.f),
+                                                  projector->getOffsetPhi(), projector->getOffsetTheta());
+                            updateWindowTitle();
+                            renderPanoramaView();
+                            break;
+                        }
+                        case sf::Keyboard::Key::V:
+                        {
+                            //Adjust zoom so that vertical field of view is 45 degrees; update window title for changed zoom level
+                            projector->updateView(projector->getRequiredZoomFromVFOV(45.f * static_cast<float>(M_PI) / 180.f),
+                                                  projector->getOffsetPhi(), projector->getOffsetTheta());
+                            updateWindowTitle();
+                            renderPanoramaView();
+                            break;
+                        }
+                        case sf::Keyboard::Key::L:
+                        {
+                            //Toggle locked theta angle mouse drag mode
+                            mouseDragLockThetaAngle = !mouseDragLockThetaAngle;
+                            updateWindowTitle();
+                            break;
+                        }
+                        case sf::Keyboard::Key::F:
+                        case sf::Keyboard::Key::F11:
+                        {
+                            //Toggle fullscreen mode
+                            fullscreenMode = !fullscreenMode;
+
+                            //Create new window
+                            createWindow(fullscreenMode);
+
+                            //Update title and display
+                            updateWindowTitle();
+                            renderPanoramaView();
+
+                            break;
+                        }
+                        case sf::Keyboard::Key::W:
+                        {
+                            if (event.key.control)
+                                window.close();
+                            break;
+                        }
+                        default:
+                            break;
+                    }
+                    break;
+                }
+                default:
+                    break;
+            }
+        }
+
+        //If at least one window resize event was collected in the event loop above, resize the panorama scene now
+        if (windowResizing)
+        {
+            windowResizing = false;
+
+            updateDisplaySize();
+
+            renderPanoramaView();
+        }
+
+        //If view angle manipulation via mouse drag is active, change scene perspective according to initial (at mouse
+        //drag activation) and current mouse position so that mouse pointer stays aligned with same spot in the scene
+        if (mouseDragging)
+        {
+            //Calculate relative movement of mouse position between start of mouse drag and now in terms of panorama sphere angles
+
+            sf::Vector2f dragCurrentMouseAngle = projector->getViewAngle(dragCurrentMousePos);
+
+            float deltaPhi = dragInitialMouseAngle.x - dragCurrentMouseAngle.x;
+            float deltaTheta = dragInitialMouseAngle.y - dragCurrentMouseAngle.y;
+
+            if (mouseDragLockThetaAngle)
+                deltaTheta = 0;
+
+            //Move the perspective about the same relative view angle
+            projector->updateView(projector->getZoom(), dragInitialViewOffsetPhi + deltaPhi, dragInitialViewOffsetTheta + deltaTheta);
+
+            renderPanoramaView();
+        }
+    }
+
+    //Delete the projector
+    projector.reset();
+
+    return true;
+}
+
+//Private
+
+/*!
+ * \brief Create a new window or recreate the old window.
+ *
+ * Enables vertical synchronization.
+ *
+ * Enables fullscreen mode if this is supported and \p pFullscreenMode is true.
+ *
+ * \param pFullscreenMode Use fullscreen mode, if available.
+ */
+void PanoramaWindow::createWindow(bool pFullscreenMode)
+{
+    sf::VideoMode videoMode = sf::VideoMode::getDesktopMode();
+
+    if (pFullscreenMode && sf::VideoMode::getFullscreenModes().size() > 0)
+        videoMode = sf::VideoMode::getFullscreenModes()[0];
+    else
+        pFullscreenMode = false;
+
+    window.create(videoMode, "", pFullscreenMode ? sf::Style::Fullscreen : sf::Style::Default);
+
+    window.setVerticalSyncEnabled(true);
+}
+
+/*!
+ * \brief Update the window title with current file name and zoom level.
+ *
+ * Sets the window title according to the current file name and zoom level.
+ * Appends an 'L' to the title if the "lock vertical view angle during mouse drag" mode is active.
+ *
+ * Note: The shown zoom level is a percentage measured relative to the minimal possible zoom
+ * that just fits the vertical window field of view. See also Projector::getNormalizedZoom().
+ *
+ * Note: Returns immediately, if no projector is defined (no panorama window running (see run()).
+ */
+void PanoramaWindow::updateWindowTitle()
+{
+    if (!projector)
+        return;
+
+    window.setTitle(std::string(SPNV_PROGRAM_NAME) + " - \"" + fileName + "\" - " +
+                    std::to_string(std::lroundf(100*projector->getNormalizedZoom())) + "%" + (mouseDragLockThetaAngle ? " L" : ""));
+}
+
+//
+
+/*!
+ * \brief Adjust window settings and Projector projection to current window resolution.
+ *
+ * Updates Projector to use the current window resolution in order to generate properly sized display projections.
+ * Changes size of window's view frame and of the texture used to display the scene accordingly.
+ *
+ * See also Projector::updateDisplaySize().
+ *
+ * Note: Returns immediately, if no projector is defined (no panorama window running (see run()).
+ */
+void PanoramaWindow::updateDisplaySize()
+{
+    if (!projector)
+        return;
+
+    //Need to explicitly update resolution of displayed window content
+    sf::View view({0, 0, static_cast<float>(window.getSize().x), static_cast<float>(window.getSize().y)});
+    window.setView(view);
+
+    projector->updateDisplaySize(window.getSize());
+
+    panoTexture.create(window.getSize().x, window.getSize().y);
+}
+
+//
+
+/*!
+ * \brief Zoom into the scene.
+ *
+ * Increases the focal length of the "virtual camera" by a factor of 1.1,
+ * which changes the field of view by approximately the same factor:
+ *
+ * FOV / 2 = atan(tan(FOV / 2) / factor) ~ (FOV / 2) / factor
+ *
+ * See also Projector::updateView().
+ *
+ * Note: Returns immediately, if no projector is defined (no panorama window running (see run()).
+ */
+void PanoramaWindow::zoomIn()
+{
+    if (!projector)
+        return;
+
+    //Zoom in
+    projector->updateView(projector->getZoom() * 1.1, projector->getOffsetPhi(), projector->getOffsetTheta());
+
+    //Update display
+    updateWindowTitle();
+    renderPanoramaView();
+}
+
+/*!
+ * \brief Zoom out of the scene.
+ *
+ * Same as zoomIn() with a factor of 1/1.1 instead.
+ *
+ * Note: Returns immediately, if no projector is defined (no panorama window running (see run()).
+ */
+void PanoramaWindow::zoomOut()
+{
+    if (!projector)
+        return;
+
+    //Zoom out
+    projector->updateView(projector->getZoom() / 1.1, projector->getOffsetPhi(), projector->getOffsetTheta());
+
+    //Update display
+    updateWindowTitle();
+    renderPanoramaView();
+}
+
+//
+
+/*!
+ * \brief Draw the current scene projection.
+ *
+ * Gets the current display projection from Projector::getDisplayData(),
+ * updates the corresponding texture and displays it in the window.
+ *
+ * Note: Returns immediately, if no projector is defined (no panorama window running (see run()).
+ */
+void PanoramaWindow::renderPanoramaView()
+{
+    if (!projector)
+        return;
+
+    //Load current projection data into texture and update sprite accordingly
+    panoTexture.update(projector->getDisplayData().data());
+    panoSprite.setTexture(panoTexture, true);
+
+    //Display the scene
+
+    window.clear();
+
+    window.draw(panoSprite);
+
+    window.display();
+}
diff --git a/src/panoramawindow.h b/src/panoramawindow.h
new file mode 100644
index 0000000..38abbb2
--- /dev/null
+++ b/src/panoramawindow.h
@@ -0,0 +1,81 @@
+/*
+////////////////////////////////////////////////////////////////////////////////////////
+//
+//  This file is part of SPNV, a simple panorama viewer for Hugin panoramas.
+//  Copyright (C) 2022 M. Frohne
+//
+//  SPNV is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License,
+//  or (at your option) any later version.
+//
+//  SPNV is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//  See the GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with SPNV. If not, see <https://www.gnu.org/licenses/>.
+//
+////////////////////////////////////////////////////////////////////////////////////////
+*/
+
+#ifndef PANORAMAWINDOW_H
+#define PANORAMAWINDOW_H
+
+#include "version.h"
+#include "projector.h"
+
+#include <SFML/Graphics.hpp>
+
+#include <memory>
+#include <string>
+#include <iostream>
+
+/*!
+ * \brief Display panorama scenes on screen from variable perspectives.
+ *
+ * Displays panorama scenes that are defined by a loaded panorama picture and corresponding SceneMetaData in a window (see run()).
+ * A panorama scene can be shown from different perspectives (view angle, zoom), which is controlled by user input via mouse
+ * or keyboard. To obtain a flat rectangular image to display on screen for every perspective a rectilinear projection of
+ * the panorama sphere is used. The window that displays the scene is created by an sf::RenderWindow from the SFML library.
+ *
+ * Processing user input and displaying the current perspective in the window is handled by this class,
+ * while Projector is used to load the picture and transform it to different perspectives.
+ *
+ * A single PanoramaWindow can be used to subsequently display different panorama scenes
+ * as the used window and Projector instances will be dynamically created by run().
+ */
+class PanoramaWindow
+{
+public:
+    PanoramaWindow();                           ///< Constructor.
+    //
+    bool run(const std::string& pFileName, const SceneMetaData& pSceneMetaData);    ///< Display a picture as panorama scene in a window.
+
+private:
+    void createWindow(bool pFullscreenMode);    ///< Create a new window or recreate the old window.
+    //
+    void updateWindowTitle();                   ///< Update the window title with current file name and zoom level.
+    //
+    void updateDisplaySize();                   ///< Adjust window settings and Projector projection to current window resolution.
+    //
+    void zoomIn();                              ///< Zoom into the scene.
+    void zoomOut();                             ///< Zoom out of the scene.
+    //
+    void renderPanoramaView();                  ///< Draw the current scene projection.
+
+private:
+    sf::RenderWindow window;                //Window used to display the panorama scene
+    //
+    std::string fileName;                   //File name of current panorama picture
+    //
+    sf::Texture panoTexture;                //Texture used to draw the panorama scene
+    sf::Sprite panoSprite;                  //Sprite used to draw the panorama scene
+    //
+    std::unique_ptr<Projector> projector;   //Projector for picture loading, perspective transformation and display projection
+    //
+    bool mouseDragLockThetaAngle;           //Lock the vertical view angle during mouse drag
+};
+
+#endif // PANORAMAWINDOW_H
diff --git a/src/projector.cpp b/src/projector.cpp
new file mode 100644
index 0000000..aa8964e
--- /dev/null
+++ b/src/projector.cpp
@@ -0,0 +1,853 @@
+/*
+////////////////////////////////////////////////////////////////////////////////////////
+//
+//  This file is part of SPNV, a simple panorama viewer for Hugin panoramas.
+//  Copyright (C) 2022 M. Frohne
+//
+//  SPNV is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License,
+//  or (at your option) any later version.
+//
+//  SPNV is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//  See the GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with SPNV. If not, see <https://www.gnu.org/licenses/>.
+//
+////////////////////////////////////////////////////////////////////////////////////////
+*/
+
+#include "projector.h"
+
+/*!
+ * \brief Constructor.
+ *
+ * Loads the panorama picture \p pFileName and sets up panorama
+ * scene-specific configuration using meta data from \p pSceneMetaData.
+ *
+ * Sets lower/upper "oversampling" thresholds and the target "oversampling" value (see updateDisplayFOV()
+ * and calcLowestDisplayTrafoOversampling()) to fixed values of 1.0, 2.0 and 1.5, respectively.
+ *
+ * In order to fully set up the panorama scene, call updateDisplaySize().
+ * Only then the class can be used and display projections be obtained via getDisplayData().
+ *
+ * \param pFileName The panorama picture to load.
+ * \param pSceneMetaData Meta data for the panorama scene shown in \p pFileName.
+ *
+ * \throws std::runtime_error Picture loading failed (unsupported file format, file does not exist, etc.).
+ * \throws std::runtime_error Picture size from \p pSceneMetaData does not match actual size of \p pFileName.
+ */
+Projector::Projector(const std::string& pFileName, const SceneMetaData& pSceneMetaData) :
+    pic(),
+    //
+    fileName(pFileName),
+    //
+    projectionType(pSceneMetaData.getProjectionType()),
+    //
+    picUncroppedSize(pSceneMetaData.getUncroppedSize()),
+    picUncroppedFOV(pSceneMetaData.getUncroppedFOV()),
+    //
+    picCropPosTL(pSceneMetaData.getCropPosTL()),
+    picCropPosBR(pSceneMetaData.getCropPosBR()),
+    //
+    picSize({picCropPosBR.x - picCropPosTL.x, picCropPosBR.y - picCropPosTL.y}),
+    //
+    fovTL(calcTopLeftFOV()),
+    fovBR(calcBottomRightFOV()),
+    //
+    fovCentHor({fovBR.x - fovTL.x, 2*std::max(fovTL.y, -fovBR.y)}),
+    fovCentHorNoMargin({fovBR.x - fovTL.x, 2*std::min(fovTL.y, -fovBR.y)}),
+    fovNonCentHorNoMargin({fovBR.x - fovTL.x, fovTL.y - fovBR.y}),
+    //
+    f(0),
+    zoom(1),
+    minZoomCentHor(std::tan(fovCentHor.y / 2.) / std::tan(fovCentHorNoMargin.y / 2.)),
+    minZoomNonCentHor(std::tan(fovCentHor.y / 2.) / std::tan(fovNonCentHorNoMargin.y / 2.)),
+    viewOffsetPhi(0),
+    viewOffsetTheta(0),
+    //
+    displaySize({0, 0}),
+    displayFOV({0, 0}),
+    displayData(),
+    //
+    staticDisplayTrafosX(),
+    staticDisplayTrafosY(),
+    //
+    panoSphereSize({0, 0}),
+    panoSphereData(),
+    //
+    panoSphereRemapHystMinOvers(1.0),
+    panoSphereRemapHystTargOvers(1.5),
+    panoSphereRemapHystMaxOvers(2.0),
+    panoSphereRemapHystMaxF(0)
+{
+    if (!pic.loadFromFile(fileName))
+        throw std::runtime_error("Could not load the picture \"" + fileName + "\"!");
+
+    if (pic.getSize().x != static_cast<unsigned int>(picSize.x) || pic.getSize().y != static_cast<unsigned int>(picSize.y))
+        throw std::runtime_error("Loaded picture size does not match specified cropped picture size!");
+}
+
+//Public
+
+/*!
+ * \brief Adjust buffers and transformations for a changed display size.
+ *
+ * Resizes display projection buffer, adjusts transformations (see updateDisplayFOV())
+ * and updates the display projection (see updateDisplayData()).
+ *
+ * \param pDisplaySize New size for display projection.
+ * \param pForceAdjustResolution Force re-projection of panorama sphere (see updateDisplayFOV()).
+ */
+void Projector::updateDisplaySize(sf::Vector2u pDisplaySize, bool pForceAdjustResolution)
+{
+    displaySize.x = static_cast<int>(pDisplaySize.x);
+    displaySize.y = static_cast<int>(pDisplaySize.y);
+
+    displayData.resize(4 * displaySize.x * displaySize.y, 255.);
+
+    updateDisplayFOV(pForceAdjustResolution);
+
+    //Changed FOV might exceed available FOV, so check/fix perspective to avoid margins
+    fitViewOffset();
+
+    updateDisplayData();
+}
+
+/*!
+ * \brief Change the current perspective of the display projection.
+ *
+ * If \p pZoom is different from current zoom level, changes zoom and adjusts transformations (see updateDisplaySize()).
+ * Then changes view angle and updates the display projection according to the new perspective (see updateDisplayData()).
+ *
+ * If \p pZoom is 0, the zoom will be set to the minimum possible value (to obtain the largest available field of view without margins).
+ * If \p pZoom is -1, the vertical view angle offset will be set to 0 (centered horizon) and the zoom will be set to the minimum possible
+ * value given the centered horizon condition (to obtain the largest available field of view without margins given a centered horizon).
+ *
+ * \param pZoom New zoom level (or 0 or -1, see function description).
+ * \param pOffsetPhi New horizontal view angle offset.
+ * \param pOffsetTheta New vertical view angle offset.
+ * \param pForceAdjustResolution Force re-projection of panorama sphere if zoom is changed (see updateDisplayFOV()).
+ */
+void Projector::updateView(float pZoom, float pOffsetPhi, float pOffsetTheta, bool pForceAdjustResolution)
+{
+    if (pZoom == -1)
+    {
+        //Set minimum possible zoom under centered horizon condition
+        pZoom = minZoomCentHor;
+
+        pOffsetTheta = 0;
+    }
+    else if (pZoom == 0)
+    {
+        //Set minimum possible zoom under condition of "perfect" theta angle (that just avoids
+        //both top and bottom margins and which will be automatically figured out below)
+        pZoom = minZoomNonCentHor;
+    }
+    else if (pZoom < minZoomNonCentHor) //Constrain zoom level with lower limit to avoid margins
+        pZoom = minZoomNonCentHor;
+
+    //Only need to adjust FOV of display projection if zoom level did actually change
+    if (pZoom != zoom)
+    {
+        zoom = pZoom;
+        updateDisplayFOV(pForceAdjustResolution);
+    }
+
+    viewOffsetPhi = pOffsetPhi;
+    viewOffsetTheta = pOffsetTheta;
+
+    //Changed perspective might exceed available FOV, so check/fix perspective to avoid margins
+    fitViewOffset();
+
+    updateDisplayData();
+}
+
+/*!
+ * \brief Vertically center the horizon line.
+ *
+ * The vertical view angle offset will be set to 0 and the zoom level adjusted as necessary to avoid margins. See also updateView().
+ *
+ * \param pForceAdjustResolution Force re-projection of panorama sphere if zoom is changed (see updateDisplayFOV()).
+ */
+void Projector::centerHorizon(bool pForceAdjustResolution)
+{
+    updateView(std::max(zoom, minZoomCentHor), viewOffsetPhi, 0, pForceAdjustResolution);
+}
+
+//
+
+/*!
+ * \brief Get the current horizontal view angle.
+ *
+ * \return Horizontal view angle offset 'phi'.
+ */
+float Projector::getOffsetPhi() const
+{
+    return viewOffsetPhi;
+}
+
+/*!
+ * \brief Get the current vertical view angle.
+ *
+ * \return Vertical view angle offset 'theta'.
+ */
+float Projector::getOffsetTheta() const
+{
+    return viewOffsetTheta;
+}
+
+/*!
+ * \brief Get the current zoom level.
+ *
+ * \return Current zoom level ("arbitrary" units).
+ */
+float Projector::getZoom() const
+{
+    return zoom;
+}
+
+/*!
+ * \brief Get the current zoom level relative to the minimum possible one.
+ *
+ * \return Current zoom level divided by minimum possible zoom level for no margins.
+ */
+float Projector::getNormalizedZoom() const
+{
+    return zoom / minZoomNonCentHor;
+}
+
+//
+
+/*!
+ * \brief Calculate the zoom level needed to obtain a specific horizontal field of view.
+ *
+ * Using the return value with updateView() yields a visible horizontal field of view of \p pHFOV.
+ *
+ * Note that unlike with getRequiredZoomFromVFOV() and the \e vertical field of view, the required
+ * zoom for a specific \e horizontal field of view depends on the current display size aspect ratio.
+ *
+ * \param pHFOV Desired horizontal field of view.
+ * \return Required zoom level.
+ */
+float  Projector::getRequiredZoomFromHFOV(float pHFOV) const
+{
+    float aspect = static_cast<float>(displaySize.x) / displaySize.y;
+
+    return std::tan(fovCentHor.y / 2.) * aspect / std::tan(pHFOV / 2.);
+}
+
+/*!
+ * \brief Calculate the zoom level needed to obtain a specific vertical field of view.
+ *
+ * Using the return value with updateView() yields a visible vertical field of view of \p pVFOV.
+ *
+ * Note that unlike with getRequiredZoomFromHFOV() and the \e horizontal field of view, the required
+ * zoom for a specific \e vertical field of view is \e independent of the display size aspect ratio.
+ *
+ * \param pVFOV Desired vertical field of view.
+ * \return Required zoom level.
+ */
+float  Projector::getRequiredZoomFromVFOV(float pVFOV) const
+{
+    return std::tan(fovCentHor.y / 2.) / std::tan(pVFOV / 2.);
+}
+
+//
+
+/*!
+ * \brief Get angle pointed to by specific pixel in the display projection.
+ *
+ * Calculates the view angle that corresponds to the display position \p pDisplayPosition.
+ * Note that current view angle offsets (getOffsetPhi(), getOffsetTheta()) are ignored.
+ *
+ * \param pDisplayPosition Position in the display projection.
+ * \return Corresponding view angle without offsets.
+ */
+sf::Vector2f Projector::getViewAngle(sf::Vector2i pDisplayPosition) const
+{
+    return {staticDisplayTrafoX(pDisplayPosition.x), staticDisplayTrafoY(pDisplayPosition.y, pDisplayPosition.x)};
+}
+
+//
+
+/*!
+ * \brief Get the display projection of the panorama sphere for current perspective.
+ *
+ * Returns the image data of the current rectilinear display projection.
+ * The image data are stored as a flat array containing continuous rows,
+ * with each column occupying four continuous values for "rgba" encoding:
+ * - r[x,y] = data[4*(displaySize.x*y + x)]
+ * - g[x,y] = data[4*(displaySize.x*y + x) + 1]
+ * - b[x,y] = data[4*(displaySize.x*y + x) + 2]
+ * - a[x,y] = data[4*(displaySize.x*y + x) + 3] = 255.0
+ *
+ * The alpha channel is unused!
+ *
+ * Note that the calculation of the projection and the image data is \e not done
+ * by this function but directly by those functions that change perspective.
+ *
+ * \return Image data of display projection as flat array.
+ */
+const std::vector<sf::Uint8>& Projector::getDisplayData() const
+{
+    return displayData;
+}
+
+//Private
+
+/*!
+ * \brief Calculate 'phi' and 'theta' angle of cropped picture's top left corner.
+ *
+ * Calculates the point in panorama sphere coordinates ('phi', 'theta') of the uncropped picture where
+ * the top left corner of the cropped picture's crop rectangle points to. The result depends on the
+ * panorama projection type, uncropped picture's size and field of view and the crop corner position.
+ *
+ * \return View angle corresponding to top left corner of cropped picture.
+ */
+sf::Vector2f Projector::calcTopLeftFOV() const
+{
+    if (projectionType == SceneMetaData::PanoramaProjection::_CENTRAL_CYLINDRICAL)
+    {
+        return {picUncroppedFOV.x * picCropPosTL.x / picUncroppedSize.x, std::atan(std::tan(picUncroppedFOV.y / 2.f) /
+                                                                                   (picUncroppedSize.y / 2.f) *
+                                                                                   (picUncroppedSize.y / 2.f - picCropPosTL.y))};
+    }
+    else if (projectionType == SceneMetaData::PanoramaProjection::_EQUIRECTANGULAR)
+    {
+        return {picUncroppedFOV.x * picCropPosTL.x / picUncroppedSize.x, (picUncroppedFOV.y / 2.f) *
+                    (picUncroppedSize.y / 2.f - picCropPosTL.y) / (picUncroppedSize.y / 2.f)};
+    }
+    else
+        return {0, 0};
+}
+
+/*!
+ * \brief Calculate 'phi' and 'theta' angle of cropped picture's bottom right corner.
+ *
+ * Calculates the point in panorama sphere coordinates ('phi', 'theta') of the uncropped picture where
+ * the bottom right corner of the cropped picture's crop rectangle points to. The result depends on the
+ * panorama projection type, uncropped picture's size and field of view and the crop corner position.
+ *
+ * \return View angle corresponding to bottom right corner of cropped picture.
+ */
+sf::Vector2f Projector::calcBottomRightFOV() const
+{
+    if (projectionType == SceneMetaData::PanoramaProjection::_CENTRAL_CYLINDRICAL)
+    {
+        return {picUncroppedFOV.x * picCropPosBR.x / picUncroppedSize.x, -std::atan(std::tan(picUncroppedFOV.y / 2.f) /
+                                                                                    (picUncroppedSize.y / 2.f) *
+                                                                                    (picCropPosBR.y - picUncroppedSize.y / 2.f))};
+    }
+    else if (projectionType == SceneMetaData::PanoramaProjection::_EQUIRECTANGULAR)
+    {
+        return {picUncroppedFOV.x * picCropPosBR.x / picUncroppedSize.x, -(picUncroppedFOV.y / 2.f) *
+                    (picUncroppedSize.y / 2.f - (picUncroppedSize.y - picCropPosBR.y)) / (picUncroppedSize.y / 2.f)};
+    }
+    else
+        return {0, 0};
+}
+
+//
+
+/*!
+ * \brief Calculate panorama sphere 'phi' angle pointed to by a pixel in the display projection (without added variable view angle offset).
+ *
+ * Assuming the panorama sphere being at the origin (no view angle offset, i.e. centered horizon
+ * and centered prime meridian), calculates the 'phi' angle of that point of the panorama sphere
+ * that corresponds to a point in the display projection with horizontal position \p pX.
+ *
+ * Note that the results only change when the zoom or display size change and hence
+ * it may be useful to cache them (see also updateStaticDisplayTrafoCache()).
+ *
+ * \param pX Horizontal display position.
+ * \return Corresponding 'phi' angle in the centered panorama sphere.
+ */
+float Projector::staticDisplayTrafoX(int pX) const
+{
+    return std::atan2(static_cast<float>(pX) - static_cast<float>(displaySize.x) / 2., f);
+}
+
+/*!
+ * \brief Calculate panorama sphere 'theta' angle pointed to by a pixel in the display projection
+ *        (without added variable view angle offset).
+ *
+ * Assuming the panorama sphere being at the origin (no view angle offset, i.e. centered horizon and centered
+ * prime meridian), calculates the 'theta' angle of that point of the panorama sphere that corresponds
+ * to a point in the display projection with horizontal position \p pX and vertical position \p pY.
+ *
+ * Note that the results only change when the zoom or display size change and hence
+ * it may be useful to cache them (see also updateStaticDisplayTrafoCache()).
+ *
+ * \param pY Vertical display position.
+ * \param pX Horizontal display position.
+ * \return Corresponding 'theta' angle in the centered panorama sphere.
+ */
+float Projector::staticDisplayTrafoY(int pY, int pX) const
+{
+    return std::atan((static_cast<float>(pY) - static_cast<float>(displaySize.y) / 2.) / f *
+                     std::sin(std::atan2(f, static_cast<float>(pX) - static_cast<float>(displaySize.x) / 2.)));
+}
+
+/*!
+ * \brief Calculate horizontal position in the panorama sphere buffer that corresponds to a pixel in the display projection
+ *        (with view angle offset).
+ *
+ * Calculates that horizontal position in the panorama sphere buffer that corresponds to a point in the display projection with
+ * horizontal position \p pX. The transformation takes the current perspective into account by including the view angle offset.
+ *
+ * Note: Requires an up to date cache of display projection to panorama sphere angle transformations
+ * in the form of 'staticDisplayTrafosX[\p pX] = staticDisplayTrafoX(\p pX)' for all \p pX.
+ * See updateStaticDisplayTrafoCache().
+ *
+ * Note: Does not check or correct for values outside of [0, panoSphereSize.x).
+ *
+ * \param pX Horizontal display position.
+ * \return Corresponding horizontal panorama sphere buffer position.
+ */
+float Projector::displayTrafoX(int pX) const
+{
+    //Take cached phi angle and add horizontal view angle offset; scale this result by available buffer pixels vs. available FOV
+    return (staticDisplayTrafosX[pX] + viewOffsetPhi) * panoSphereSize.x / fovCentHor.x;
+}
+
+/*!
+ * \brief Calculate vertical position in the panorama sphere buffer that corresponds to a pixel in the display projection
+ *        (with view angle offset).
+ *
+ * Calculates that vertical position in the panorama sphere buffer that corresponds to a point
+ * in the display projection with horizontal position \p pX and vertical position \p pY. The
+ * transformation takes the current perspective into account by including the view angle offset.
+ *
+ * Note: Requires an up to date cache of display projection to panorama sphere angle transformations in the form of
+ * 'staticDisplayTrafosY[(displaySize.x+1) * \p pY + \p pX] = staticDisplayTrafoY(\p pY, \p pX)' for all \p pX and \p pY.
+ * See updateStaticDisplayTrafoCache().
+ *
+ * Note: Does not check or correct for values outside of [0, panoSphereSize.y) or [0, panoSphereSize.x).
+ *
+ * \param pY Vertical display position.
+ * \param pX Horizontal display position.
+ * \return Corresponding vertical panorama sphere buffer position.
+ */
+float Projector::displayTrafoY(int pY, int pX) const
+{
+    //Take cached theta angle and add vertical view angle offset; scale this result by available buffer pixels vs.
+    //available FOV and add an offset to vertically align center of projection with zero theta angle (sphere origin)
+    return (staticDisplayTrafosY[(displaySize.x+1)*pY + pX] + viewOffsetTheta) * panoSphereSize.y / fovCentHor.y + panoSphereSize.y / 2.;
+}
+
+//
+
+/*!
+ * \brief Re-calculate cache of display projection to panorama sphere angle transformations used by displayTrafoX() and displayTrafoY().
+ *
+ * Updates the cache for display projection to panorama sphere angle transformations (see staticDisplayTrafoX(), staticDisplayTrafoY()):
+ * - 'staticDisplayTrafosX[\p pX] = staticDisplayTrafoX(\p pX)'
+ * - 'staticDisplayTrafosY[(displaySize.x+1) * \p pY + \p pX] = staticDisplayTrafoY(\p pY, \p pX)'
+ *
+ * An up to date cache is needed by displayTrafoX() and displayTrafoY().
+ * The transformations must change when the zoom or display size change.
+ */
+void Projector::updateStaticDisplayTrafoCache()
+{
+    staticDisplayTrafosX.resize(displaySize.x+1, 0);
+    staticDisplayTrafosY.resize((displaySize.x+1)*(displaySize.y+1), 0);
+
+    for (int x = 0; x <= displaySize.x; ++x)
+        staticDisplayTrafosX[x] = staticDisplayTrafoX(x);
+
+    for (int y = 0; y <= displaySize.y; ++y)
+        for (int x = 0; x <= displaySize.x; ++x)
+            staticDisplayTrafosY[(displaySize.x+1)*y + x] = staticDisplayTrafoY(y, x);
+}
+
+//
+
+/*!
+ * \brief Calculate smallest ratio of delta(panorama sphere pixels) vs. delta(display projection pixels)
+ *        of all positions for both directions.
+ *
+ * In order to have good performance of updateDisplayData() while maintaining sufficient resolution of the display projection one
+ * may want to target a low "oversampling" of the projection close to but larger than one for every zoom level. The oversampling
+ * estimate may then be used to adjust the panorama sphere size in such a way as to obtain a desired oversampling value.
+ *
+ * This function estimates the oversampling one-dimensionally in terms of the number of panorama sphere pixels projected
+ * onto a single display projection pixel for horizontal and vertical directions and returns the minimum of both results.
+ * The estimation is done for the top left corner of the display projection, as the oversampling is the lowest in the corners.
+ *
+ * Note: Requires an up to date cache of display projection to panorama sphere angle transformations
+ * (see both displayTrafoX() and displayTrafoY()).
+ *
+ * \return Lowest oversampling of panorama sphere to display projection (for metric see function description).
+ */
+float Projector::calcLowestDisplayTrafoOversampling() const
+{
+    //Lowest resolution at corners of projection/FOV
+    float tx0 = displayTrafoX(0);       //Left edge
+    float tx1 = displayTrafoX(1);       //One pixel to the right
+    float ty0 = displayTrafoY(0, 0);    //Top edge
+    float ty1 = displayTrafoY(1, 0);    //One pixel downwards
+
+    float overX = tx1 - tx0;
+    float overY = ty1 - ty0;
+
+    return std::min(overX, overY);
+}
+
+//
+
+/*!
+ * \brief Clip view angle offset as necessary to stay within available field of view.
+ *
+ * Calculates minimum/maximum 'phi' and 'theta' angles for keeping the field of view of the
+ * display projection within the available field of view of the panorama scene (no margins).
+ *
+ * Clips the current view angle offset at these values. Also ensures 'phi' within [0, 2*pi).
+ */
+void Projector::fitViewOffset()
+{
+    if (fovCentHor.x < 2*M_PI)  //Limit horizontal view angle offset such that no point in display projection is beyond available FOV
+    {
+        if (viewOffsetPhi < displayFOV.x / 2.)
+            viewOffsetPhi = displayFOV.x / 2.;
+        else if (viewOffsetPhi > fovCentHor.x - displayFOV.x / 2.)
+            viewOffsetPhi = fovCentHor.x - displayFOV.x / 2.;
+    }
+    else                        //In case of a 360 degree panorama do not limit horizontal view angle offset, but keep it within [0, 2*PI)
+    {
+        if (viewOffsetPhi < 0)
+            viewOffsetPhi += 2*M_PI;
+        else if (viewOffsetPhi >= 2*M_PI)
+            viewOffsetPhi -= 2*M_PI;
+    }
+
+    //Also limit vertical view angle offset such that no point in display projection is beyond available FOV
+
+    if (displayFOV.y / 2. - viewOffsetTheta > fovTL.y)
+        viewOffsetTheta = (displayFOV.y / 2. - fovTL.y);
+    else if (displayFOV.y / 2. + viewOffsetTheta > -fovBR.y)
+        viewOffsetTheta = -(displayFOV.y / 2. + fovBR.y);
+}
+
+//
+
+/*!
+ * \brief Adjust parameters and transformations after display size or zoom change.
+ *
+ * Updates field of view parameters and according display projection cache (see updateStaticDisplayTrafoCache()).
+ *
+ * Then uses calcLowestDisplayTrafoOversampling() to check if the panorama sphere needs to be resized (see mapPicToPanoSphere())
+ * in order to balance projection performance and resolution. Resizing is done above and below a fixed oversampling threshold
+ * and targets a fixed oversampling value between the thresholds. For their values see Projector().
+ *
+ * If the resizing e.g. after zooming in does not restore an oversampling above the lower threshold
+ * (limited picture resolution), the current "virtual camera focal length" parameter is remembered
+ * and then used on further calls to this function to skip the resizing beyond that point.
+ *
+ * The parameter \p pForceRemapSphere is used to enforce sphere resizing.
+ *
+ * \param pForceRemapSphere Force resizing and re-mapping of the panorama sphere.
+ */
+void Projector::updateDisplayFOV(bool pForceRemapSphere)
+{
+    float aspect = static_cast<float>(displaySize.x) / displaySize.y;
+
+    //Always normalize visible FOV via the constant maximum symmetric FOV and use a zoom parameter to obtain any other FOV
+
+    const float tanFOV2 = std::tan(fovCentHor.y / 2.);
+
+    displayFOV.x = 2. * std::atan(tanFOV2 * aspect / zoom); //Derive horizontal FOV from vertical FOV and aspect ratio
+    displayFOV.y = 2. * std::atan(tanFOV2          / zoom); //Use a vertical FOV that is independent of display size
+
+    //Define focal length of a virtual camera that is scaled according to a fixed "sensor size" equal to 'displaySize'
+    const float f0 = displaySize.y / 2. / tanFOV2;
+
+    //Displayed FOV is controlled via a changing focal length, which in turn is changed by changing the multiplied zoom factor
+    f = f0 * zoom;
+
+    //Transformations depend on current FOV, hence cache needs update
+    updateStaticDisplayTrafoCache();
+
+    //Automatically remap panorama sphere if displayed resolution went too low (except if not useful anymore) or unnecessarily large
+
+    bool remapSphere = ((calcLowestDisplayTrafoOversampling() < panoSphereRemapHystMinOvers) &&
+                        (panoSphereRemapHystMaxF == 0 || f < panoSphereRemapHystMaxF)               //Skip, if FOV "too large" (see below)
+                        ) || (calcLowestDisplayTrafoOversampling() > panoSphereRemapHystMaxOvers);
+
+    if (remapSphere || pForceRemapSphere)
+    {
+        mapPicToPanoSphere();
+
+        //If zoomed resolution could not be further increased by remapping sphere, set remap limit for current focal length parameter 'f'
+        if (remapSphere && (calcLowestDisplayTrafoOversampling() < panoSphereRemapHystMinOvers))
+            panoSphereRemapHystMaxF = f;
+    }
+}
+
+//
+
+/*!
+ * \brief Project current panorama sphere perspective to display projection buffer.
+ *
+ * Fills the display projection buffer with a rectilinear projection of the panorama sphere
+ * at the current perspective defined by zoom level and view angle offset. Pixel colors are
+ * interpolated between the two buffers of arbitrary resolution via a simple area weighting
+ * (see also interpolatePixel()).
+ */
+void Projector::updateDisplayData()
+{
+    //Flat array of panorama sphere image data
+    const sf::Uint8* sourcePixels = panoSphereData.data();
+
+    //Cache final projection transformation values for current perspective as they are reused for every projection pixel below
+
+    std::vector<float> displayTrafosX(displaySize.x+1, 0);
+    std::vector<float> displayTrafosY((displaySize.x+1)*(displaySize.y+1), 0);
+
+    for (int x = 0; x <= displaySize.x; ++x)
+        displayTrafosX[x] = displayTrafoX(x);
+
+    for (int y = 0; y <= displaySize.y; ++y)
+        for (int x = 0; x <= displaySize.x; ++x)
+            displayTrafosY[(displaySize.x+1)*y + x] = displayTrafoY(y, x);
+
+    //Go through every projection pixel coordinate, calculate the rectangle in the panorama sphere
+    //corresponding to the pixel's square and interpolate the pixel color as the mean color of the rectangle
+    for (int y = 0; y < displaySize.y; ++y)
+    {
+        for (int x = 0; x < displaySize.x; ++x)
+        {
+            //Top left and bottom right corner coordinates of the projection pixel transformed to the panorama sphere
+            float tLx = displayTrafosX[x];
+            float tLy = displayTrafosY[(displaySize.x+1)*y + x];
+            float bRx = displayTrafosX[x+1];
+            float bRy = displayTrafosY[(displaySize.x+1)*(y+1) + x + 1];
+
+            //In case of a 360 degree panorama the transformations might output values that exceed FOV of the scene;
+            //at this point only fix lower boundary to avoid negative individual values but also avoid wrong negative difference (bRx-tLx)
+            if (tLx < 0)
+                tLx += panoSphereSize.x;
+            if (bRx - tLx < 0)
+                bRx += panoSphereSize.x;
+
+            //Interpolate current display pixel color from panorama sphere pixels covered by the transformed pixel rectangle
+            interpolatePixel(panoSphereSize, sourcePixels,
+                             {std::ref(displayData[4*(displaySize.x*y + x)]),
+                              std::ref(displayData[4*(displaySize.x*y + x) + 1]),
+                              std::ref(displayData[4*(displaySize.x*y + x) + 2])},
+                             tLx, tLy, bRx, bRy);
+        }
+    }
+}
+
+/*!
+ * \brief Project the loaded picture onto the panorama sphere.
+ *
+ * Fills the panorama sphere buffer with a spherical projection of the loaded panorama picture. The used projection
+ * transformation is selected according to the scene's panorama projection type (see SceneMetaData::PanoramaProjection).
+ *
+ * The size of the panorama sphere is set such that a target "oversampling" of the panorama sphere
+ * to display projection (see calcLowestDisplayTrafoOversampling() and also updateDisplayFOV())
+ * is obtained, except if the limited panorama picture resolution and current perspective
+ * do not allow to do so. For the target oversampling value see Projector().
+ *
+ * The pixel colors are interpolated between the two buffers of arbitrary
+ * resolution via a simple area weighting (see also interpolatePixel()).
+ */
+void Projector::mapPicToPanoSphere()
+{
+    //Initially set sphere width to loaded picture width (max. useful size); scale height via FOV, as sphere coordinates are simply angles
+    panoSphereSize.x = picSize.x;
+    panoSphereSize.y = static_cast<int>(picSize.x * fovCentHor.y / fovCentHor.x + 1.);
+
+    //Define scale factor to possibly lower sphere size below
+    float scaleFactor = 1;
+
+    const float picHorizonY = picUncroppedSize.y / 2. - picCropPosTL.y;   //Horizon position in loaded cropped picture
+    const float tanFOV2 = std::tan(picUncroppedFOV.y / 2.);
+
+    //Transformations from loaded picture to panorama sphere buffer coordinates (they depend on above scale factor and scaled sphere size)
+
+    //Equirectangular projection (horizontal component); equivalent to central cylindrical projection
+    auto equirectToSphereTrafoX = [&scaleFactor](float pX) -> float
+    {
+        return pX / scaleFactor;
+    };
+
+    //Equirectangular projection (vertical component)
+    auto equirectToSphereTrafoY = [this, &scaleFactor, picHorizonY](float pY) -> float
+    {
+        return (pY - panoSphereSize.y / 2.) / scaleFactor + picHorizonY;
+    };
+
+    //Central cylindrical projection (vertical component)
+    auto cylindToSphereTrafoY = [this, &scaleFactor, picHorizonY, tanFOV2](float pY) -> float
+    {
+        return std::tan((pY - panoSphereSize.y / 2.) * fovCentHor.y / panoSphereSize.y) / tanFOV2 * picUncroppedSize.y / 2. + picHorizonY;
+    };
+
+    //Same x-transformation for central cylindrical and equirectangular projections
+    const auto& sphereTrafoX = equirectToSphereTrafoX;
+
+    //Choose y-tranformation according to projection type
+    auto sphereTrafoY = [equirectToSphereTrafoY, cylindToSphereTrafoY,
+                         cylindrical = (projectionType == SceneMetaData::PanoramaProjection::_CENTRAL_CYLINDRICAL)](float pY) -> float
+    {
+        if (cylindrical)
+            return cylindToSphereTrafoY(pY);
+        else
+            return equirectToSphereTrafoY(pY);
+    };
+
+    //If finally display pixels transform to unnecessarily many sphere pixels (too high "oversampling"), reduce sphere size (or resolution)
+
+    float over = calcLowestDisplayTrafoOversampling();
+
+    if (over > panoSphereRemapHystTargOvers)
+    {
+        //Change scale factor and sphere size accordingly (note: transformations above capture these by reference or this pointer)
+
+        scaleFactor = panoSphereRemapHystTargOvers / over;
+
+        panoSphereSize.x = static_cast<int>(scaleFactor * picSize.x + 1.);
+        panoSphereSize.y = static_cast<int>(scaleFactor * picSize.x * fovCentHor.y / fovCentHor.x + 1.);
+    }
+
+    panoSphereData.resize(4 * panoSphereSize.x * panoSphereSize.y, 255.);
+
+    //Flat array of loaded panorama picture data
+    const sf::Uint8* sourcePixels = pic.getPixelsPtr();
+
+    //Cache transformation values as they are reused for every sphere pixel below
+
+    std::vector<float> sphereTrafosX(panoSphereSize.x+1, 0);
+    std::vector<float> sphereTrafosY(panoSphereSize.y+1, 0);
+
+    for (int x = 0; x <= panoSphereSize.x; ++x)
+        sphereTrafosX[x] = sphereTrafoX(x);
+    for (int y = 0; y <= panoSphereSize.y; ++y)
+        sphereTrafosY[y] = sphereTrafoY(y);
+
+    //Go through every sphere pixel coordinate, calculate the rectangle in the picture corresponding
+    //to the pixel's square and interpolate the pixel color as the mean color of the rectangle
+    for (int y = 0; y < panoSphereSize.y; ++y)
+    {
+        for (int x = 0; x < panoSphereSize.x; ++x)
+        {
+            //Top left and bottom right corner coordinates of the sphere pixel transformed to the loaded picture
+            float tLx = sphereTrafosX[x];
+            float tLy = sphereTrafosY[y];
+            float bRx = sphereTrafosX[x+1];
+            float bRy = sphereTrafosY[y+1];
+
+            //Pixels might point to out of bounds part of the picture, because picture not always symmetric but sphere is (just ignore them)
+            if (bRy <= 0 || tLy >= picSize.y)
+                break;
+
+            //Interpolate current panorama sphere pixel color from panorama picture pixels covered by the transformed pixel rectangle
+            interpolatePixel(picSize, sourcePixels,
+                             {std::ref(panoSphereData[4*(panoSphereSize.x*y + x)]),
+                              std::ref(panoSphereData[4*(panoSphereSize.x*y + x) + 1]),
+                              std::ref(panoSphereData[4*(panoSphereSize.x*y + x) + 2])},
+                             tLx, tLy, bRx, bRy);
+        }
+    }
+}
+
+//
+
+/*!
+ * \brief Interpolate target pixel color from rectangle in source image by area weighting.
+ *
+ * The color values of pixels from \p pSourcePixels within the rectangle {{\p pTLx, \p pTLy}, {\p pBRx, \p pBRy}}
+ * are averaged and the resulting color is applied to \p pTargetPixel. The color averaging is area-weighted.
+ * It uses the intersection of the source pixel and rectangle areas as weights.
+ *
+ * The format of the source image data \p pSourcePixels must be equivalent to the format used for the data
+ * returned by getDisplayData() (see there) with the source image size being \p pSourceImageSize here.
+ *
+ * \p pTargetPixel are references to the individual {r, g, b} color values of the target pixel.
+ *
+ * \param pSourceImageSize Size of the source image.
+ * \param pSourcePixels Source image data as flat array.
+ * \param pTargetPixel Target image pixel color as {r, g, b}.
+ * \param pTLx Horizontal coordinate of source image rectangle's top left corner.
+ * \param pTLy Vertical coordinate of source image rectangle's top left corner.
+ * \param pBRx Horizontal coordinate of source image rectangle's bottom right corner.
+ * \param pBRy Vertical coordinate of source image rectangle's bottom right corner.
+ */
+void Projector::interpolatePixel(sf::Vector2i pSourceImageSize, const sf::Uint8 *const pSourcePixels,
+                                 std::array<std::reference_wrapper<sf::Uint8>, 3> pTargetPixel,
+                                 float pTLx, float pTLy, float pBRx, float pBRy)
+{
+    //Coordinates of topmost and leftmost source pixels that are at least partially covered by the transformed rectangle
+    int tLxi = static_cast<int>(pTLx);
+    int tLyi = static_cast<int>(pTLy);
+
+    //Coordinates of bottommost and rightmost source pixels that are at least partially covered by the transformed rectangle
+    int bRxi = static_cast<int>(pBRx);
+    int bRyi = static_cast<int>(pBRy);
+
+    //Integer width and height of a rectangle that fully covers all relevant pixels (the edge pixels then may only count partially)
+    int nx = bRxi - tLxi + 1;
+    int ny = bRyi - tLyi + 1;
+
+    //Area-weighted sum of RGB color values
+    float r = 0;
+    float g = 0;
+    float b = 0;
+
+    //Total area of transformed rectangle
+    float totalWeight = 0;
+
+    //Go through every source pixel that is at least partially covered by the transformed rectangle;
+    //sum the pixels' color values, each weighted by the intersection of the pixel and rectangle areas
+    for (int iy = 0; iy < ny; ++iy)
+    {
+        //Vertical bounds check (pixels might be out of bounds due to rounding effects, just ignore them)
+        if (tLyi+iy < 0 || tLyi+iy >= pSourceImageSize.y)
+            continue;
+
+        //Calculate height of intersection of pixel and rectangle
+        float yWeight = 1;
+        if (iy == 0)
+            yWeight = 1 + tLyi - pTLy;
+        else if (iy == ny - 1)
+            yWeight = pBRy - bRyi;
+
+        for (int ix = 0; ix < nx; ++ix)
+        {
+            //Horizontal bounds check (pixels out of bounds only relevant for 360 degree panoramas, so just add full width offset)
+            int wrap = 0;
+            if (tLxi+ix < 0)
+                wrap = pSourceImageSize.x;
+            else if (tLxi+ix >= pSourceImageSize.x)
+                wrap = -pSourceImageSize.x;
+
+            //Calculate width of intersection of pixel and rectangle
+            float xWeight = 1;
+            if (ix == 0)
+                xWeight = 1 + tLxi - pTLx;
+            else if (ix == nx - 1)
+                xWeight = pBRx - bRxi;
+
+            //Weight is intersection of pixel and rectangle areas
+            float weight = xWeight * yWeight;
+
+            totalWeight += weight;
+
+            r += weight * pSourcePixels[4*(pSourceImageSize.x*(tLyi+iy) + tLxi+ix + wrap)];
+            g += weight * pSourcePixels[4*(pSourceImageSize.x*(tLyi+iy) + tLxi+ix + wrap) + 1];
+            b += weight * pSourcePixels[4*(pSourceImageSize.x*(tLyi+iy) + tLxi+ix + wrap) + 2];
+        }
+    }
+
+    //Set target pixel color to area-weighted color of the transformed source rectangle
+
+    pTargetPixel[0].get() = r / totalWeight;
+    pTargetPixel[1].get() = g / totalWeight;
+    pTargetPixel[2].get() = b / totalWeight;
+}
diff --git a/src/projector.h b/src/projector.h
new file mode 100644
index 0000000..731fb83
--- /dev/null
+++ b/src/projector.h
@@ -0,0 +1,162 @@
+/*
+////////////////////////////////////////////////////////////////////////////////////////
+//
+//  This file is part of SPNV, a simple panorama viewer for Hugin panoramas.
+//  Copyright (C) 2022 M. Frohne
+//
+//  SPNV is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License,
+//  or (at your option) any later version.
+//
+//  SPNV is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//  See the GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with SPNV. If not, see <https://www.gnu.org/licenses/>.
+//
+////////////////////////////////////////////////////////////////////////////////////////
+*/
+
+#ifndef PROJECTOR_H
+#define PROJECTOR_H
+
+#include "scenemetadata.h"
+
+#include <SFML/Graphics.hpp>
+
+#include <cmath>
+#include <array>
+#include <vector>
+#include <string>
+#include <functional>
+
+/*!
+ * \brief Panorama picture loading and projection onto virtual camera for varying perspectives.
+ *
+ * Loads a panorama picture and maps it onto a panorama sphere using additional information about
+ * the panorama scene provided in form of SceneMetaData. See also Projector(). A limited field of
+ * view rectilinear projection of the panorama sphere can be obtained from getDisplayData(), which
+ * can be used, for instance, to display the current perspective on a screen or save it as a snapshot.
+ * This rectilinear projection is a 2-dim. image and its size must be set via updateDisplaySize().
+ *
+ * The current perspective (view angle and zoom) can be set using updateView() (which will also
+ * update the projection data) and can be queried via getOffsetPhi(), getOffsetTheta() and getZoom().
+ * The function centerHorizon() automatically changes perspective such that the horizon line will be centered.
+ *
+ * Note that these perspective values are automatically adjusted, if the resulting rectilinear
+ * projection would include areas not covered by the loaded panorama scene (no margins).
+ *
+ * Note also that this implies a minimal possible zoom level. A normalized zoom level
+ * measured relative to this minimal zoom can be obtained via getNormalizedZoom().
+ *
+ * For achieving a specific field of view in either horizontal or vertical direction
+ * one can use getRequiredZoomFromHFOV() or getRequiredZoomFromVFOV().
+ *
+ * The function getViewAngle() can be used to get the view angle pointed to by a specific pixel
+ * of the rectilinear projection of getDisplayData(). Note that this does \e not include the view
+ * angle offsets set by updateView() but it is nevertheless useful for navigation via mouse drag.
+ */
+class Projector
+{
+public:
+    Projector(const std::string& pFileName, const SceneMetaData& pSceneMetaData);   ///< Constructor.
+
+public:
+    void updateDisplaySize(sf::Vector2u pDisplaySize,
+                           bool pForceAdjustResolution = false);        ///< Adjust buffers and transformations for a changed display size.
+    void updateView(float pZoom, float pOffsetPhi, float pOffsetTheta,
+                    bool pForceAdjustResolution = false);               ///< Change the current perspective of the display projection.
+    void centerHorizon(bool pForceAdjustResolution = false);            ///< Vertically center the horizon line.
+    //
+    float getOffsetPhi() const;                         ///< Get the current horizontal view angle.
+    float getOffsetTheta() const;                       ///< Get the current vertical view angle.
+    float getZoom() const;                              ///< Get the current zoom level.
+    float getNormalizedZoom() const;                    ///< Get the current zoom level relative to the minimum possible one.
+    //
+    float getRequiredZoomFromHFOV(float pHFOV) const;   ///< Calculate the zoom level needed to obtain a specific horizontal field of view.
+    float getRequiredZoomFromVFOV(float pVFOV) const;   ///< Calculate the zoom level needed to obtain a specific vertical field of view.
+    //
+    sf::Vector2f getViewAngle(sf::Vector2i pDisplayPosition) const; ///< Get angle pointed to by specific pixel in the display projection.
+    //
+    const std::vector<sf::Uint8>& getDisplayData() const;   ///< Get the display projection of the panorama sphere for current perspective.
+
+private:
+    sf::Vector2f calcTopLeftFOV() const;                    ///< Calculate 'phi' and 'theta' angle of cropped picture's top left corner.
+    sf::Vector2f calcBottomRightFOV() const;                ///< Calculate 'phi' and 'theta' angle of cropped picture's bottom right corner.
+    //
+    float staticDisplayTrafoX(int pX) const;                ///< \brief Calculate panorama sphere 'phi' angle pointed to by a pixel
+                                                            ///  in the display projection (without added variable view angle offset).
+    float staticDisplayTrafoY(int pY, int pX) const;        ///< \brief Calculate panorama sphere 'theta' angle pointed to by a pixel
+                                                            ///  in the display projection (without added variable view angle offset).
+    float displayTrafoX(int pX) const;                      ///< \brief Calculate horizontal position in the panorama sphere buffer that
+                                                            ///  corresponds to a pixel in the display projection (with view angle offset).
+    float displayTrafoY(int pY, int pX) const;              ///< \brief Calculate vertical position in the panorama sphere buffer that
+                                                            ///  corresponds to a pixel in the display projection (with view angle offset).
+    //
+    void updateStaticDisplayTrafoCache();                   ///< \brief Re-calculate cache of display projection to panorama sphere angle
+                                                            ///  transformations used by displayTrafoX() and displayTrafoY().
+    //
+    float calcLowestDisplayTrafoOversampling() const;       ///< \brief Calculate smallest ratio of delta(panorama sphere pixels) vs.
+                                                            ///  delta(display projection pixels) of all positions for both directions.
+    //
+    void fitViewOffset();                                   ///< Clip view angle offset as necessary to stay within available field of view.
+    //
+    void updateDisplayFOV(bool pForceRemapSphere = false);  ///< Adjust parameters and transformations after display size or zoom change.
+    //
+    void updateDisplayData();                               ///< Project current panorama sphere perspective to display projection buffer.
+    void mapPicToPanoSphere();                              ///< Project the loaded picture onto the panorama sphere.
+    //
+    inline void interpolatePixel(sf::Vector2i pSourceImageSize, const sf::Uint8 *const pSourcePixels,
+                                 std::array<std::reference_wrapper<sf::Uint8>, 3> pTargetPixel,
+                                 float pTLx, float pTLy, float pBRx, float pBRy);   ///< \brief Interpolate target pixel color from
+                                                                                    ///  rectangle in source image by area weighting.
+
+private:
+    sf::Image pic;                                          //Loaded panorama picture
+    //
+    const std::string fileName;                             //File name of the panorama picture
+    //
+    const SceneMetaData::PanoramaProjection projectionType; //Panorama picture projection type
+    //
+    const sf::Vector2i picUncroppedSize;            //Size of panorama picture if it was uncropped (size symmetric about horizon line)
+    const sf::Vector2f picUncroppedFOV;             //FOV of panorama picture if it was uncropped (FOV symmetric about horizon line)
+    //
+    const sf::Vector2i picCropPosTL;                //Position in uncropped picture corresponding to top left corner of cropped picture
+    const sf::Vector2i picCropPosBR;                //Position in uncropped picture corresponding to bottom right corner of cropped picture
+    //
+    const sf::Vector2i picSize;                     //Size of cropped picture derived from crop information
+    //
+    const sf::Vector2f fovTL;                       //Horizontal/vertical FOV angle corresponding to top left corner of cropped picture
+    const sf::Vector2f fovBR;                       //Horizontal/vertical FOV angle corresponding to bottom right corner of cropped picture
+    //
+    const sf::Vector2f fovCentHor;                  //Maximum symmetric FOV covered by cropped picture (possibly with one-sided margin)
+    const sf::Vector2f fovCentHorNoMargin;          //Maximum symmetric FOV fully covered by cropped picture without visible margins
+    const sf::Vector2f fovNonCentHorNoMargin;       //Maximum asymmetric FOV fully covered by cropped picture without visible margins
+    //
+    float f;                                    //Focal length-like parameter used for camera-like rectilinear display projection
+    float zoom;                                 //Controls the visible amount of field of view
+    const float minZoomCentHor;                 //Minimal allowed zoom for display projections without margins (given centered horizon)
+    const float minZoomNonCentHor;              //Minimal allowed zoom for display projections without margins ("optimal" theta angle)
+    float viewOffsetPhi;                        //Phi rotation of camera/projection with respect to panorama sphere
+    float viewOffsetTheta;                      //Theta rotation of camera/projection with respect to panorama sphere
+    //
+    sf::Vector2i displaySize;                   //Target size for the rectilinear display projection
+    sf::Vector2f displayFOV;                    //Field of view covered by projection (depends on 'displaySize' aspect ratio and 'zoom')
+    std::vector<sf::Uint8> displayData;         //Data buffer for display projection
+    //
+    std::vector<float> staticDisplayTrafosX;    //Cache for view angle-indep. part of horizontal trafo from display pos. to pano. sphere
+    std::vector<float> staticDisplayTrafosY;    //Cache for view angle-indep. part of vertical trafo from display pos. to pano. sphere
+    //
+    sf::Vector2i panoSphereSize;                //Image size of the panorama sphere
+    std::vector<sf::Uint8> panoSphereData;      //Data buffer for the panorama sphere
+    //
+    const float panoSphereRemapHystMinOvers;    //Min. projection oversampling thresh. (increase pano. sphere resolution when zoom in more)
+    const float panoSphereRemapHystTargOvers;   //Target projection oversampling (try reach this value when adjusting pano. sphere resol.)
+    const float panoSphereRemapHystMaxOvers;    //Max. projection oversampling thresh. (decrease pano. sphere resolution when zoom out more)
+    float panoSphereRemapHystMaxF;      //Max. f beyond which oversampl. cannot be restored by pano. sphere re-calc. (limited picture res.)
+};
+
+#endif // PROJECTOR_H
diff --git a/src/scenemetadata.cpp b/src/scenemetadata.cpp
new file mode 100644
index 0000000..f5ac433
--- /dev/null
+++ b/src/scenemetadata.cpp
@@ -0,0 +1,400 @@
+/*
+////////////////////////////////////////////////////////////////////////////////////////
+//
+//  This file is part of SPNV, a simple panorama viewer for Hugin panoramas.
+//  Copyright (C) 2022 M. Frohne
+//
+//  SPNV is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License,
+//  or (at your option) any later version.
+//
+//  SPNV is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//  See the GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with SPNV. If not, see <https://www.gnu.org/licenses/>.
+//
+////////////////////////////////////////////////////////////////////////////////////////
+*/
+
+#include "scenemetadata.h"
+
+/*!
+ * \brief Construct meta data for an "empty" panorama scene (for loading useful values from file later).
+ *
+ * Sets projection type to PanoramaProjection::_CENTRAL_CYLINDRICAL and all sizes and positions to 0.
+ * See also SceneMetaData(PanoramaProjection, sf::Vector2i, sf::Vector2f, sf::Vector2i, sf::Vector2i).
+ *
+ * Useful meta data can be loaded from file via loadFromPTOFile() or loadFromPNVFile().
+ */
+SceneMetaData::SceneMetaData() :
+    SceneMetaData(PanoramaProjection::_CENTRAL_CYLINDRICAL, {0, 0}, {0, 0}, {0, 0}, {0, 0})
+{
+}
+
+/*!
+ * \brief Construct panorama scene meta data from already known values.
+ *
+ * Sets the used projection type to \p pProjectionType. Note that reconstruction of the panorama sphere in Hugin first
+ * yields a raw uncropped panorama picture that is centered around the horizon line and expands the same amount in both
+ * north and south directions. This uncropped picture has the size (in pixels) \p pUncroppedSize and spans a total
+ * field of view of {HFOV, VFOV} = \p pUncroppedFOV. Because the final panorama picture is a cropped version of this
+ * uncropped panorama, one further needs information about the crop rectangle, which is given in terms of its top left
+ * (\p pCropPosTL) and bottom right (\p pCropPosBR) corner positions (relative to the uncropped coordinate system).
+ *
+ * \param pProjectionType Panorama projection type.
+ * \param pUncroppedSize Size of (Hugin's) uncropped panorama picture reconstruction.
+ * \param pUncroppedFOV Field of view covered by (Hugin's) uncropped panorama picture reconstruction.
+ * \param pCropPosTL Position in uncropped panorama picture reconstruction matching top left corner of actual panorama picture.
+ * \param pCropPosBR Position in uncropped panorama picture reconstruction matching bottom right corner of actual panorama picture.
+ */
+SceneMetaData::SceneMetaData(PanoramaProjection pProjectionType, sf::Vector2i pUncroppedSize,
+                             sf::Vector2f pUncroppedFOV, sf::Vector2i pCropPosTL, sf::Vector2i pCropPosBR) :
+    projectionType(pProjectionType),
+    uncroppedSize(pUncroppedSize),
+    uncroppedFOV(pUncroppedFOV),
+    cropPosTL(pCropPosTL),
+    cropPosBR(pCropPosBR)
+{
+}
+
+//Public
+
+/*!
+ * \brief Get the panorama projection type.
+ *
+ * \return Panorama projection type.
+ */
+SceneMetaData::PanoramaProjection SceneMetaData::getProjectionType() const
+{
+    return projectionType;
+}
+
+/*!
+ * \brief Get the size of the uncropped panorama picture.
+ *
+ * \return Size of uncropped panorama picture reconstruction.
+ */
+sf::Vector2i SceneMetaData::getUncroppedSize() const
+{
+    return uncroppedSize;
+}
+
+/*!
+ * \brief Get the field of view of the uncropped panorama picture.
+ *
+ * \return Field of view covered by uncropped panorama picture reconstruction.
+ */
+sf::Vector2f SceneMetaData::getUncroppedFOV() const
+{
+    return uncroppedFOV;
+}
+
+/*!
+ * \brief Get the position of the crop rectangle's top left corner.
+ *
+ * \return Top left panorama picture crop position.
+ */
+sf::Vector2i SceneMetaData::getCropPosTL() const
+{
+    return cropPosTL;
+}
+
+/*!
+ * \brief Get the position of the crop rectangle's bottom right corner.
+ *
+ * \return Bottom right panorama picture crop position.
+ */
+sf::Vector2i SceneMetaData::getCropPosBR() const
+{
+    return cropPosBR;
+}
+
+//
+
+/*!
+ * \brief Load the meta data from a Hugin project file.
+ *
+ * Parses the Hugin project file \p pFileName and extracts the required information from it
+ * (see SceneMetaData(PanoramaProjection, sf::Vector2i, sf::Vector2f, sf::Vector2i, sf::Vector2i)).
+ *
+ * Note that the vertical field of view is not saved in the project files and will hence be automatically
+ * calculated from the other available information (calculation depends on the used projection type).
+ *
+ * \param pFileName File name of the project file.
+ * \return If successful.
+ */
+bool SceneMetaData::loadFromPTOFile(const std::string& pFileName)
+{
+    //Information to be parsed from project file
+    PanoramaProjection tProjectionType;
+    sf::Vector2i tUncroppedSize;
+    sf::Vector2f tUncroppedFOV;
+    sf::Vector2i tCropPosTL;
+    sf::Vector2i tCropPosBR;
+
+    try
+    {
+        std::ifstream file;
+        file.exceptions(std::ios_base::badbit | std::ios_base::failbit);
+        file.open(pFileName, std::ios_base::in);
+
+        std::string line;
+
+        //Read first three lines of file (third line contains required information), check if file is Hugin project file
+
+        std::getline(file, line);
+        if (line != "# hugin project file")
+            throw std::runtime_error("Not a Hugin project file!");
+        std::getline(file, line);
+        if (line != "#hugin_ptoversion 2")
+            throw std::runtime_error("Project file is of unsupported Hugin version!");
+        std::getline(file, line);
+
+        file.close();
+
+        //Check for correct line
+        if (line.substr(0, 3) != "p f")
+            throw std::runtime_error("Unexpected project file content!");
+
+        //Decompose line into substrings containing required information
+
+        std::string substrProj, substrH, substrW, substrHFOV, substrCrop;
+
+        std::istringstream sstrm(line);
+
+        std::getline(sstrm, line, ' ');
+        std::getline(sstrm, substrProj, ' ');
+        std::getline(sstrm, substrW, ' ');
+        std::getline(sstrm, substrH, ' ');
+        std::getline(sstrm, substrHFOV, ' ');
+        std::getline(sstrm, line, ' ');
+        std::getline(sstrm, line, ' ');
+        std::getline(sstrm, line, ' ');
+        std::getline(sstrm, line, ' ');
+        std::getline(sstrm, substrCrop, ' ');
+
+        //Split key chars from numeric data
+        substrProj = substrProj.substr(1);
+        substrH = substrH.substr(1);
+        substrW = substrW.substr(1);
+        substrHFOV = substrHFOV.substr(1);
+        substrCrop = substrCrop.substr(1);
+
+        //Special treatment for crop information (is comma separated list)
+
+        std::string substrCropL, substrCropR, substrCropT, substrCropB;
+
+        sstrm = std::istringstream(substrCrop);
+
+        std::getline(sstrm, substrCropL, ',');
+        std::getline(sstrm, substrCropR, ',');
+        std::getline(sstrm, substrCropT, ',');
+        sstrm>>substrCropB;
+
+        //Convert to actual numbers
+
+        int proj, h, w, cropL, cropR, cropT, cropB;
+        float hfov, vfov;
+
+        proj = std::atoi(substrProj.c_str());
+        h = std::atoi(substrH.c_str());
+        w = std::atoi(substrW.c_str());
+        hfov = std::atoi(substrHFOV.c_str()) * static_cast<float>(M_PI)/180.f;
+        cropL = std::atoi(substrCropL.c_str());
+        cropR = std::atoi(substrCropR.c_str());
+        cropT = std::atoi(substrCropT.c_str());
+        cropB = std::atoi(substrCropB.c_str());
+
+        //Need to calculate VFOV from other numbers (depends on projection type)
+        if (proj == 1)
+        {
+            tProjectionType = PanoramaProjection::_CENTRAL_CYLINDRICAL;
+
+            vfov = 2.f * std::atan(hfov * h / w / 2.f);
+        }
+        else if (proj == 2)
+        {
+            tProjectionType = PanoramaProjection::_EQUIRECTANGULAR;
+
+            vfov = hfov * h / w;
+        }
+        else
+            throw std::runtime_error("Unsupported projection type!");
+
+        tUncroppedSize = {w, h};
+        tUncroppedFOV = {hfov, vfov};
+        tCropPosTL = {cropL, cropT};
+        tCropPosBR = {cropR, cropB};
+    }
+    catch (const std::ios_base::failure& exc)
+    {
+        std::cerr<<"ERROR: Could not open PTO file \"" + pFileName + "\"!"<<std::endl;
+        std::cerr<<exc.what()<<std::endl;
+        return false;
+    }
+    catch (const std::exception& exc)
+    {
+        std::cerr<<"ERROR: Could not parse PTO file \"" + pFileName + "\"!"<<std::endl;
+        std::cerr<<exc.what()<<std::endl;
+        return false;
+    }
+
+    projectionType = tProjectionType;
+    uncroppedSize = tUncroppedSize;
+    uncroppedFOV = tUncroppedFOV;
+    cropPosTL = tCropPosTL;
+    cropPosBR = tCropPosBR;
+
+    return true;
+}
+
+/*!
+ * \brief Load the meta data from a "PNV file".
+ *
+ * Instead of by parsing a Hugin project file (loadFromPTOFile()), the meta data can
+ * also be read from a file of custom format, the "PNV file". Such a file can be
+ * generated via saveToPNVFile() (see there for information about the file format).
+ *
+ * \param pFileName File name of the "PNV file".
+ * \return If successful.
+ */
+bool SceneMetaData::loadFromPNVFile(const std::string& pFileName)
+{
+    //Information to be read from file
+    PanoramaProjection tProjectionType;
+    sf::Vector2i tUncroppedSize;
+    sf::Vector2f tUncroppedFOV;
+    sf::Vector2i tCropPosTL;
+    sf::Vector2i tCropPosBR;
+
+    try
+    {
+        std::ifstream file;
+        file.exceptions(std::ios_base::badbit | std::ios_base::failbit);
+        file.open(pFileName, std::ios_base::in);
+
+        //Decompose first line into substrings containing required information
+
+        std::string substrSig, substrProj, substrW, substrH, substrHFOV, substrVFOV,
+                    substrCropL, substrCropT, substrCropR, substrCropB;
+
+        //Check PNV file signature first
+        std::getline(file, substrSig, ',');
+        if (substrSig != "PanoramaViewerAuxiliaryFile")
+            throw std::runtime_error("Not a PNV file!");
+
+        std::getline(file, substrProj, ',');
+        std::getline(file, substrW, ',');
+        std::getline(file, substrH, ',');
+        std::getline(file, substrHFOV, ',');
+        std::getline(file, substrVFOV, ',');
+        std::getline(file, substrCropL, ',');
+        std::getline(file, substrCropT, ',');
+        std::getline(file, substrCropR, ',');
+        std::getline(file, substrCropB, ';');
+
+        //Convert to required numbers
+
+        int h, w, cropL, cropR, cropT, cropB;
+        float hfov, vfov;
+
+        h = std::atoi(substrH.c_str());
+        w = std::atoi(substrW.c_str());
+        hfov = std::atof(substrHFOV.c_str());
+        vfov = std::atof(substrVFOV.c_str());
+        cropL = std::atoi(substrCropL.c_str());
+        cropR = std::atoi(substrCropR.c_str());
+        cropT = std::atoi(substrCropT.c_str());
+        cropB = std::atoi(substrCropB.c_str());
+
+        //Determine used panorama projection type
+        if (substrProj == "CYL")
+            tProjectionType = PanoramaProjection::_CENTRAL_CYLINDRICAL;
+        else if (substrProj == "EQR")
+            tProjectionType = PanoramaProjection::_EQUIRECTANGULAR;
+        else
+            throw std::runtime_error("Unsupported projection type!");
+
+        tUncroppedSize = {w, h};
+        tUncroppedFOV = {hfov, vfov};
+        tCropPosTL = {cropL, cropT};
+        tCropPosBR = {cropR, cropB};
+    }
+    catch (const std::ios_base::failure& exc)
+    {
+        std::cerr<<"ERROR: Could not open file \"" + pFileName + "\"!"<<std::endl;
+        std::cerr<<exc.what()<<std::endl;
+        return false;
+    }
+    catch (const std::exception& exc)
+    {
+        std::cerr<<"ERROR: Could not parse file \"" + pFileName + "\"!"<<std::endl;
+        std::cerr<<exc.what()<<std::endl;
+        return false;
+    }
+
+    projectionType = tProjectionType;
+    uncroppedSize = tUncroppedSize;
+    uncroppedFOV = tUncroppedFOV;
+    cropPosTL = tCropPosTL;
+    cropPosBR = tCropPosBR;
+
+    return true;
+}
+
+/*!
+ * \brief Write the meta data to a "PNV file".
+ *
+ * Writes the meta data to a "PNV file" of the following custom format:
+ *
+ * "PanoramaViewerAuxiliaryFile," + PROJECTION_TYPE + "," + UNCROPPED_SIZE_X + "," + UNCROPPED_SIZE_Y + "," +
+ * UNCROPPED_FOV_X + "," + UNCROPPED_FOV_Y + "," + CROP_POS_L + "," + CROP_POS_T + "," + CROP_POS_R + "," + CROP_POS_B + ";\n"
+ *
+ * The meta data from such a file can be loaded via loadFromPNVFile().
+ *
+ * \param pFileName File name of the "PNV file".
+ * \return If successful.
+ */
+bool SceneMetaData::saveToPNVFile(const std::string& pFileName) const
+{
+    try
+    {
+        std::ofstream file;
+        file.exceptions(std::ios_base::badbit | std::ios_base::failbit);
+        file.open(pFileName, std::ios_base::out);
+
+        //Do not truncate floating point numbers
+        file<<std::fixed<<std::setprecision(std::numeric_limits<float>::digits10 + 1);
+
+        //Start with file signature
+        file<<"PanoramaViewerAuxiliaryFile"<<",";
+
+        //Write main file content
+
+        if (projectionType == PanoramaProjection::_CENTRAL_CYLINDRICAL)
+            file<<"CYL"<<",";
+        else if (projectionType == PanoramaProjection::_EQUIRECTANGULAR)
+            file<<"EQR"<<",";
+        else
+            file<<",";
+
+        file<<uncroppedSize.x<<","<<uncroppedSize.y<<",";
+        file<<uncroppedFOV.x<<","<<uncroppedFOV.y<<",";
+        file<<cropPosTL.x<<","<<cropPosTL.y<<",";
+        file<<cropPosBR.x<<","<<cropPosBR.y<<";\n";
+
+        file.close();
+    }
+    catch (const std::ios_base::failure& exc)
+    {
+        std::cerr<<"ERROR: Could not write to file \"" + pFileName + "\"!"<<std::endl;
+        std::cerr<<exc.what()<<std::endl;
+        return false;
+    }
+
+    return true;
+}
diff --git a/src/scenemetadata.h b/src/scenemetadata.h
new file mode 100644
index 0000000..166b397
--- /dev/null
+++ b/src/scenemetadata.h
@@ -0,0 +1,87 @@
+/*
+////////////////////////////////////////////////////////////////////////////////////////
+//
+//  This file is part of SPNV, a simple panorama viewer for Hugin panoramas.
+//  Copyright (C) 2022 M. Frohne
+//
+//  SPNV is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License,
+//  or (at your option) any later version.
+//
+//  SPNV is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//  See the GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with SPNV. If not, see <https://www.gnu.org/licenses/>.
+//
+////////////////////////////////////////////////////////////////////////////////////////
+*/
+
+#ifndef SCENEMETADATA_H
+#define SCENEMETADATA_H
+
+#include <SFML/System/Vector2.hpp>
+
+#include <string>
+#include <iostream>
+#include <iomanip>
+#include <fstream>
+#include <sstream>
+#include <cmath>
+
+/*!
+ * \brief Handling of panorama scene-specific meta data for proper display on screen.
+ *
+ * Gathers meta information about a panorama scene that can be used to display the scene on a screen in correct perspective,
+ * even in case of an unevenly cropped panorama picture (which particularly enables to identify (and center) the horizon line).
+ *
+ * The required information includes projection type, size (in pixels) and field of view of the uncropped scene
+ * (assumed to be symmetric about the horizon line!) and the crop rectangle used to crop the output picture.
+ * For more details see SceneMetaData(PanoramaProjection, sf::Vector2i, sf::Vector2f, sf::Vector2i, sf::Vector2i).
+ * The information can be either parsed from a corresponding Hugin project file (see loadFromPTOFile()) or loaded from
+ * (and saved to) a custom file format, which is here simply called "PNV file" (see loadFromPNVFile() and saveToPNVFile()).
+ */
+class SceneMetaData
+{
+public:
+    /*!
+     * \brief Panorama projection type.
+     *
+     * Type of projection used to map the reconstructed panorama sphere to the final output picture.
+     */
+    enum class PanoramaProjection
+    {
+        _CENTRAL_CYLINDRICAL,   ///< The "central cylindrical" projection.
+        _EQUIRECTANGULAR        ///< The "equirectangular" projection.
+    };
+
+public:
+    SceneMetaData();                                                                                ///< \brief Construct meta data for an
+                                                                                                    ///  "empty" panorama scene (for loading
+                                                                                                    ///  useful values from file later).
+    SceneMetaData(PanoramaProjection pProjectionType, sf::Vector2i pUncroppedSize,
+                  sf::Vector2f pUncroppedFOV, sf::Vector2i pCropPosTL, sf::Vector2i pCropPosBR);    ///< \brief Construct panorama scene
+                                                                                                    ///  meta data from already known values.
+    //
+    PanoramaProjection getProjectionType() const;   ///< Get the panorama projection type.
+    sf::Vector2i getUncroppedSize() const;          ///< Get the size of the uncropped panorama picture.
+    sf::Vector2f getUncroppedFOV() const;           ///< Get the field of view of the uncropped panorama picture.
+    sf::Vector2i getCropPosTL() const;              ///< Get the position of the crop rectangle's top left corner.
+    sf::Vector2i getCropPosBR() const;              ///< Get the position of the crop rectangle's bottom right corner.
+    //
+    bool loadFromPTOFile(const std::string& pFileName);     ///< Load the meta data from a Hugin project file.
+    bool loadFromPNVFile(const std::string& pFileName);     ///< Load the meta data from a "PNV file".
+    bool saveToPNVFile(const std::string& pFileName) const; ///< Write the meta data to a "PNV file".
+
+private:
+    PanoramaProjection projectionType;  //Panorama sphere to output picture projection type
+    sf::Vector2i uncroppedSize;         //Size of panorama picture if it was uncropped (size symmetric about horizon line)
+    sf::Vector2f uncroppedFOV;          //FOV of panorama picture if it was uncropped (FOV symmetric about horizon line)
+    sf::Vector2i cropPosTL;             //Position in uncropped picture corresponding to top left corner of cropped picture
+    sf::Vector2i cropPosBR;             //Position in uncropped picture corresponding to bottom right corner of cropped picture
+};
+
+#endif // SCENEMETADATA_H
diff --git a/src/version.h b/src/version.h
new file mode 100644
index 0000000..b376a7c
--- /dev/null
+++ b/src/version.h
@@ -0,0 +1,32 @@
+/*
+////////////////////////////////////////////////////////////////////////////////////////
+//
+//  This file is part of SPNV, a simple panorama viewer for Hugin panoramas.
+//  Copyright (C) 2022 M. Frohne
+//
+//  SPNV is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License,
+//  or (at your option) any later version.
+//
+//  SPNV is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//  See the GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with SPNV. If not, see <https://www.gnu.org/licenses/>.
+//
+////////////////////////////////////////////////////////////////////////////////////////
+*/
+
+#ifndef VERSION_H
+#define VERSION_H
+
+#define SPNV_PROGRAM_NAME "SPNV"
+
+#define SPNV_VERSION_MAJOR "0"
+#define SPNV_VERSION_MINOR "1"
+#define SPNV_VERSION_PATCH "0"
+
+#endif // VERSION_H