Add voronoi examples

Author: monkstone

contributed/circle_collision.rb

@@ -24,7 +24,7 @@ def draw
   end
 
   def settings
-    size 640, 360, FX2D
+    size 640, 360
   end
 end
 
@@ -60,7 +60,7 @@ def check_collision(other_ball)
     # calculate magnitude of the vector separating the balls
     return unless difference.mag < (r + other_ball.r)
     # get angle of difference
-    theta  = difference.heading
+    theta  = difference.fast_heading
     # precalculate trig values
     sine = sin(theta)
     cosine = cos(theta)

external_library/gem/geomerative/hello_svg_to_pdf.rb

@@ -3,7 +3,8 @@
 require 'geomerative'
 
 class HelloSvgToPDF < Propane::App
-  load_library 'pdf'
+  load_library :pdf
+  include_package 'processing.pdf'
   attr_reader :grp, :pdf
 
   def settings
@@ -14,7 +15,7 @@ def setup
     sketch_title 'SVG to PDF sketch'
     RG.init(self)
     @grp = RG.load_shape(data_path('bot1.svg'))
-    @pdf = create_graphics(width, height, PDF, 'bot1.pdf')
+    @pdf = create_graphics(width, height, PDF, data_path('bot1.pdf'))
   end
 
   def draw

external_library/gem/toxiclibs/geometry/Rakefile

@@ -0,0 +1,30 @@
+# Simple demo Rakefile to autorun samples in current directory
+# adjust path to rp5 executable, and or opts as required
+
+SAMPLES_DIR = './'
+
+desc 'run demo'
+task default: [:demo]
+
+desc 'demo'
+task :demo do
+  samples_list.shuffle.each { |sample| run_sample sample }
+end
+
+def samples_list
+  files = []
+  Dir.chdir(SAMPLES_DIR)
+  Dir.glob('*.rb').each do |file|
+    files << File.join(SAMPLES_DIR, file)
+  end
+  return files
+end
+
+def run_sample(sample_name)
+  puts "Running #{sample_name}...quit to run next sample"
+  open("|jruby #{sample_name}", 'r') do |io|
+    while l = io.gets
+      puts(l.chop)
+    end
+  end
+end

external_library/gem/toxiclibs/geometry/data/monalisa.jpg

@@ -0,0 +1,37 @@
+#!/usr/bin/env jruby -w
+require 'propane'
+require 'toxiclibs'
+# Sketch class
+class MonalisaVoronoi < Propane::App
+  attr_reader :gfx, :voronoi, :img, :pixels
+  def setup
+    sketch_title 'Monalisa Voronoi'
+    @img = load_image(data_path('monalisa.jpg'))
+    img.load_pixels
+    @pixels = img.pixels
+    @gfx = Gfx::ToxiclibsSupport.new(self)
+    @voronoi = Toxi::Voronoi.new
+    3_000.times do
+      voronoi.add_point(TVec2D.new(rand(width), rand(height)))
+    end
+    no_loop
+  end
+
+  def draw
+    voronoi.get_regions.each do |polygon|
+      voronoi.get_sites.each do |v|
+        if polygon.contains_point(v)
+          fill pixels[v.y * img.width + v.x]
+          gfx.polygon2D(polygon)
+        end
+      end
+    end
+    save_frame(data_path('mona-lisa-voronoi.png'))
+  end
+
+  def settings
+    size(600, 894)
+  end
+end
+
+MonalisaVoronoi.new

external_library/gem/toxiclibs/geometry/monalisa_voronoi.rb

@@ -0,0 +1,33 @@
+#!/usr/bin/env jruby -w
+require 'propane'
+require 'toxiclibs'
+# Sketch class
+class Voronoi1 < Propane::App
+  attr_reader :gfx, :voronoi
+
+  def setup
+    sketch_title 'Basic Voronoi'
+    @gfx = Gfx::ToxiclibsSupport.new(self)
+    @voronoi = Toxi::Voronoi.new
+    50.times do
+      voronoi.add_point(TVec2D.new(rand(width), rand(height)))
+    end
+    no_loop
+  end
+
+  def draw
+    background 0
+    fill 0
+    smooth
+    stroke_weight 1
+    stroke 255
+    voronoi.get_regions.each {  |polygon| gfx.polygon2D(polygon) }
+    save_frame(data_path('voronoi-001.png'))
+  end
+
+  def settings
+    size 450, 360
+  end
+end
+
+Voronoi1.new

external_library/gem/toxiclibs/geometry/voronoi1.rb

@@ -0,0 +1,40 @@
+#!/usr/bin/env jruby -w
+require 'propane'
+require 'toxiclibs'
+# Sketch class
+class Voronoi2 < Propane::App
+  attr_reader :colors, :gfx, :voronoi
+
+  def setup
+    sketch_title 'Colored Voronoi'
+    @gfx = Gfx::ToxiclibsSupport.new(self)
+    complement = Toxi::ComplementaryStrategy.new.create_list_from_color(TColor::BLUE)
+    @colors = complement.to_a # a ruby Array of TColors
+    @voronoi = Toxi::Voronoi.new
+    50.times do
+      voronoi.add_point(TVec2D.new(rand(width), rand(height)))
+    end
+  end
+
+  def draw
+    background 0
+    stroke_weight 1
+    stroke 255
+    voronoi.get_regions.each do |polygon|
+      fill colors.sample.toARGB
+      gfx.polygon2D(polygon)
+    end
+    save_frame(data_path('voronoi-002.png'))
+    no_loop
+  end
+
+  def settings
+    size 450, 360
+  end
+
+  def mouse_pressed
+    loop
+  end
+end
+
+Voronoi2.new

external_library/gem/toxiclibs/geometry/voronoi2.rb

@@ -18,7 +18,7 @@ def direction(acc)
     @accel = acc
     # magnitude of the acceleration is proportional to the angle between
     # acceleration and velocity
-    dif = acc.angle_between(vel)
+    dif = acc.fast_angle_between(vel)
     dif = map1d(dif, 0..PI, 0.1..0.001)
     @accel = acc * dif
   end

processing_app/library/vecmath/vec2d/library/circles/lib/triangle_point.rb

@@ -88,7 +88,7 @@ def seek(target)
 
   def render
     # Draw a triangle rotated in the direction of velocity
-    theta = velocity.heading + Math::PI/2
+    theta = velocity.fast_heading + Math::PI/2
     fill(200, 100)
     stroke(255)
     push_matrix