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Initial commit of project
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‎BezierBuilder-Info.plist

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>CFBundleDevelopmentRegion</key>
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<string>English</string>
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<key>CFBundleDocumentTypes</key>
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<array>
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<dict>
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<key>CFBundleTypeExtensions</key>
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<array>
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<string>????</string>
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</array>
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<key>CFBundleTypeIconFile</key>
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<string></string>
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<key>CFBundleTypeName</key>
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<string>DocumentType</string>
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<key>CFBundleTypeOSTypes</key>
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<array>
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<string>????</string>
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</array>
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<key>CFBundleTypeRole</key>
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<string>Editor</string>
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<key>NSDocumentClass</key>
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<string>MyDocument</string>
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</dict>
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</array>
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<key>CFBundleExecutable</key>
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<string>${EXECUTABLE_NAME}</string>
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<key>CFBundleIconFile</key>
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<string></string>
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<key>CFBundleIdentifier</key>
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<string>com.yourcompany.${PRODUCT_NAME:rfc1034identifier}</string>
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<key>CFBundleInfoDictionaryVersion</key>
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<string>6.0</string>
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<key>CFBundleName</key>
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<string>${PRODUCT_NAME}</string>
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<key>CFBundlePackageType</key>
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<string>APPL</string>
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<key>CFBundleSignature</key>
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<string>????</string>
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<key>CFBundleVersion</key>
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<string>1</string>
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<key>CFBundleShortVersionString</key>
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<string>1.0</string>
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<key>LSMinimumSystemVersion</key>
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<string>${MACOSX_DEPLOYMENT_TARGET}</string>
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<key>NSMainNibFile</key>
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<string>MainMenu</string>
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<key>NSPrincipalClass</key>
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<string>NSApplication</string>
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</dict>
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</plist>

‎BezierBuilder.xcodeproj/project.pbxproj

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‎BezierBuilder_Prefix.pch

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//
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// Prefix header for all source files of the 'BezierBuilder' target in the 'BezierBuilder' project
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//
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#ifdef __OBJC__
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#import <Cocoa/Cocoa.h>
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static NSPoint NSPointAddToPoint(NSPoint p1, NSPoint p2) {
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return NSMakePoint(p1.x+p2.x, p1.y+p2.y);
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}
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static NSPoint NSPointSubtractPoint(NSPoint p1, NSPoint p2) {
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return NSMakePoint(p1.x-p2.x, p1.y-p2.y);
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}
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#endif

‎BezierPoint.h

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//
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// BezierPoint.h
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// BezierBuilder
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//
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// Created by Dave DeLong on 2/1/11.
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// Copyright 2011 __MyCompanyName__. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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@interface BezierPoint : NSObject {
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}
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@property CGPoint mainPoint;
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@property CGPoint controlPoint1;
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@property CGPoint controlPoint2;
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@end

‎BezierPoint.m

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//
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// BezierPoint.m
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// BezierBuilder
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//
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// Created by Dave DeLong on 2/1/11.
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// Copyright 2011 __MyCompanyName__. All rights reserved.
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//
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#import "BezierPoint.h"
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@implementation BezierPoint
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@synthesize mainPoint;
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@synthesize controlPoint1, controlPoint2;
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@end

‎BezierView.h

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//
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// BezierView.h
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// BezierBuilder
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//
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// Created by Dave DeLong on 7/7/09.
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// Copyright 2009 __MyCompanyName__. All rights reserved.
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//
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#import <Cocoa/Cocoa.h>
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@class BezierPoint;
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@protocol BezierViewDelegate
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- (void) didChangeElementAtIndex:(NSPoint)index byDelta:(NSPoint)point;
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- (void) didAddPoints:(NSPointArray)points;
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- (NSBezierPath *) path;
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@end
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@interface BezierView : NSView {
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IBOutlet id<BezierViewDelegate> delegate;
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NSPoint editingPoint;
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NSPoint previousPoint;
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BOOL isShiftDown;
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}
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@property (nonatomic, assign) id<BezierViewDelegate> delegate;
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@end

‎BezierView.m

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//
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// BezierView.m
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// BezierBuilder
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//
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// Created by Dave DeLong on 7/7/09.
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// Copyright 2009 __MyCompanyName__. All rights reserved.
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//
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#import "BezierView.h"
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float NSDistanceFromPointToPoint(NSPoint point1, NSPoint point2) {
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float dx2 = (point1.x - point2.x) * (point1.x - point2.x);
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float dy2 = (point1.y - point2.y) * (point1.y - point2.y);
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return sqrt(dx2 + dy2);
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}
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@implementation BezierView
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@synthesize delegate;
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- (BOOL)acceptsFirstResponder {
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return YES;
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}
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- (void) flagsChanged:(NSEvent *)event {
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isShiftDown = (([event modifierFlags] & NSShiftKeyMask) > 0);
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}
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- (NSPoint) locationOfPathElementNearPoint:(NSPoint)aPoint {
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NSBezierPath * path = [delegate path];
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NSPoint closest = NSMakePoint(-1, -1);
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int elemCount = [path elementCount];
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float distance = FLT_MAX;
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for (int i = 0; i < elemCount; ++i) {
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NSPoint points[3];
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NSBezierPathElement element = [path elementAtIndex:(elemCount - 1) associatedPoints:points];
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float tDistance = 0;
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switch (element) {
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case NSCurveToBezierPathElement:
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tDistance = NSDistanceFromPointToPoint(aPoint, points[2]);
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NSLog(@"tDist %d,2: %f", i, tDistance);
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if (tDistance <= distance && tDistance <= 5) {
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distance = tDistance;
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closest = NSMakePoint(i, 2);
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}
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tDistance = NSDistanceFromPointToPoint(aPoint, points[1]);
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NSLog(@"tDist %d,1: %f", i, tDistance);
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if (tDistance <= distance && tDistance <= 5) {
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distance = tDistance;
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closest = NSMakePoint(i, 1);
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}
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default:
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tDistance = NSDistanceFromPointToPoint(aPoint, points[0]);
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NSLog(@"tDist %d,0: %f", i, tDistance);
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if (tDistance <= distance && tDistance <= 5) {
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distance = tDistance;
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closest = NSMakePoint(i, 0);
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}
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}
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}
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return closest;
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}
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- (NSPointArray) pointArrayAtPoint:(NSPoint)centerPoint {
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NSPoint * points = malloc(3 * sizeof(NSPoint));
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points[0] = centerPoint;
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points[1] = NSMakePoint(MAX(centerPoint.x+20, 0), centerPoint.y);
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points[2] = NSMakePoint(MIN(centerPoint.x-20, [self frame].size.width), centerPoint.y);
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return points;
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}
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- (void)mouseDown:(NSEvent *)theEvent {
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NSPoint event_location = [theEvent locationInWindow];
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NSPoint local_point = [self convertPoint:event_location fromView:nil];
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editingPoint = [self locationOfPathElementNearPoint:local_point];
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previousPoint = local_point;
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if (editingPoint.y <= 0 && isShiftDown) { editingPoint.y = -1; }
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if (editingPoint.x < 0) {
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NSPoint * points = [self pointArrayAtPoint:local_point];
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[[self delegate] didAddPoints:points];
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free(points);
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//setting y to -1 means that all the control points will be dragged
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editingPoint = NSMakePoint([[[self delegate] path] elementCount]-1, -1);
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}
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}
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- (void)mouseDragged:(NSEvent *)theEvent {
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NSPoint event_location = [theEvent locationInWindow];
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NSPoint local_point = [self convertPoint:event_location fromView:nil];
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[[self delegate] didChangeElementAtIndex:editingPoint byDelta:NSPointSubtractPoint(local_point, previousPoint)];
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previousPoint = local_point;
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}
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- (void)mouseUp:(NSEvent *)theEvent {
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NSPoint event_location = [theEvent locationInWindow];
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NSPoint local_point = [self convertPoint:event_location fromView:nil];
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[[self delegate] didChangeElementAtIndex:editingPoint byDelta:NSPointSubtractPoint(local_point, previousPoint)];
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previousPoint = local_point;
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}
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- (void)drawRect:(NSRect)dirtyRect {
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NSBezierPath * path = [delegate path];
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[path stroke];
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[[NSColor redColor] set];
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NSBezierPath * extra = [[NSBezierPath alloc] init];
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int elemCount = [path elementCount];
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for (int i = 0; i < elemCount; ++i) {
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NSPoint points[3];
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NSBezierPathElement element = [path elementAtIndex:i associatedPoints:points];
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NSRect rect;
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switch (element) {
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case NSCurveToBezierPathElement:
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[extra moveToPoint:points[1]];
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[extra lineToPoint:points[0]];
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[extra lineToPoint:points[2]];
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rect = NSMakeRect(points[1].x-2, points[1].y-2, 5, 5);
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[extra appendBezierPathWithOvalInRect:rect];
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rect = NSMakeRect(points[2].x-2, points[2].y-2, 5, 5);
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[extra appendBezierPathWithOvalInRect:rect];
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default:
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rect = NSMakeRect(points[0].x-2, points[0].y-2, 5, 5);
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[extra appendBezierPathWithOvalInRect:rect];
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}
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}
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[extra stroke];
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[extra release];
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}
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@end

‎CGPathRefCodeBuilder.h

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//
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// CGPathRefCodeBuilder.h
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// BezierBuilder
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//
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// Created by Dave DeLong on 2/1/11.
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// Copyright 2011 __MyCompanyName__. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import "CodeBuilder.h"
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@interface CGPathRefCodeBuilder : CodeBuilder {
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}
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@end

‎CGPathRefCodeBuilder.m

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//
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// CGPathRefCodeBuilder.m
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// BezierBuilder
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//
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// Created by Dave DeLong on 2/1/11.
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// Copyright 2011 __MyCompanyName__. All rights reserved.
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//
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#import "CGPathRefCodeBuilder.h"
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#import "BezierPoint.h"
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@implementation CGPathRefCodeBuilder
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+ (NSString *) codeForBezierPoints:(NSArray *)points {
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NSMutableArray *lines = [NSMutableArray array];
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[lines addObject:@"CGMutablePathRef path = CGPathCreateMutable();"];
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for (NSUInteger i = 0; i < [points count]; ++i) {
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BezierPoint *point = [points objectAtIndex:i];
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if (i == 0) {
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[lines addObject:[NSString stringWithFormat:@"CGPathMoveToPoint(path, NULL, %f, %f);", [point mainPoint].x, [point mainPoint].y]];
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} else {
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[lines addObject:[NSString stringWithFormat:@"CGPathAddCurveToPoint(path, NULL, %f, %f, %f, %f, %f, %f);",
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[point controlPoint1].x, [point controlPoint1].y,
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[point controlPoint2].x, [point controlPoint2].y,
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[point mainPoint].x, [point mainPoint].y]];
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}
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}
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[lines addObject:@"CGContextAddPath(<#CGContextRef#>, path);"];
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[lines addObject:@"CGContextStrokePath(<#CGContextRef#>);"];
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[lines addObject:@"CFRelease(path);"];
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return [lines componentsJoinedByString:@"\n"];
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}
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@end

‎CodeBuilder.h

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//
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// CodeBuilder.h
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// BezierBuilder
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//
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// Created by Dave DeLong on 2/1/11.
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// Copyright 2011 __MyCompanyName__. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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@interface CodeBuilder : NSObject {
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}
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+ (NSString *) codeForBezierPoints:(NSArray *)points;
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+ (id) objectForBezierPoints:(NSArray *)points;
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@end

‎CodeBuilder.m

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//
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// CodeBuilder.m
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// BezierBuilder
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//
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// Created by Dave DeLong on 2/1/11.
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// Copyright 2011 __MyCompanyName__. All rights reserved.
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//
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#import "CodeBuilder.h"
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@implementation CodeBuilder
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+ (NSString *) codeForBezierPoints:(NSArray *)points {
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NSLog(@"SUBCLASSES MUST OVERRIDE");
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return nil;
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}
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+ (id) objectForBezierPoints:(NSArray *)points {
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NSLog(@"SUBCLASSES MUST OVERRIDE");
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return nil;
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}
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@end

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