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< a href = "Phaser.TilemapParser.html" > TilemapParser< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Tileset.html" > Tileset< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.TileSprite.html" > TileSprite< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Time.html" > Time< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Timer.html" > Timer< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.TimerEvent.html" > TimerEvent< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Touch.html" > Touch< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Tween.html" > Tween< / a >
< / li >
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< li class = "class-depth-1" >
< a href = "Phaser.TweenData.html" > TweenData< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.TweenManager.html" > TweenManager< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Utils.html" > Utils< / a >
< / li >
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< li class = "class-depth-2" >
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< a href = "Phaser.Utils.Debug.html" > Debug< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.World.html" > World< / a >
< / li >
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< li class = "class-depth-1" >
< a href = "PIXI.AbstractFilter.html" > AbstractFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.AjaxRequest.html" > AjaxRequest< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.AlphaMaskFilter.html" > AlphaMaskFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.AsciiFilter.html" > AsciiFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.AssetLoader.html" > AssetLoader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.AtlasLoader.html" > AtlasLoader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.BaseTexture.html" > BaseTexture< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.BitmapFontLoader.html" > BitmapFontLoader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.BitmapText.html" > BitmapText< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.BlurFilter.html" > BlurFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.BlurXFilter.html" > BlurXFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.BlurYFilter.html" > BlurYFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.CanvasBuffer.html" > CanvasBuffer< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.CanvasGraphics.html" > CanvasGraphics< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.CanvasMaskManager.html" > CanvasMaskManager< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.CanvasRenderer.html" > CanvasRenderer< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.CanvasTinter.html" > CanvasTinter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Circle.html" > Circle< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.ColorMatrixFilter.html" > ColorMatrixFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.ColorStepFilter.html" > ColorStepFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.ComplexPrimitiveShader.html" > ComplexPrimitiveShader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.ConvolutionFilter.html" > ConvolutionFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.CrossHatchFilter.html" > CrossHatchFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.DisplacementFilter.html" > DisplacementFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.DisplayObject.html" > DisplayObject< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.DisplayObjectContainer.html" > DisplayObjectContainer< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.DotScreenFilter.html" > DotScreenFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Ellipse.html" > Ellipse< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Event.html" > Event< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.EventTarget.html" > EventTarget< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.FilterBlock.html" > FilterBlock< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.FilterTexture.html" > FilterTexture< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Graphics.html" > Graphics< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.GraphicsData.html" > GraphicsData< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.GrayFilter.html" > GrayFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.ImageLoader.html" > ImageLoader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.InteractionData.html" > InteractionData< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.InteractionManager.html" > InteractionManager< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.InvertFilter.html" > InvertFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.JsonLoader.html" > JsonLoader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Matrix.html" > Matrix< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.MovieClip.html" > MovieClip< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.NoiseFilter.html" > NoiseFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.NormalMapFilter.html" > NormalMapFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.PixelateFilter.html" > PixelateFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.PIXI.html" > PIXI< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.PixiFastShader.html" > PixiFastShader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.PixiShader.html" > PixiShader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Point.html" > Point< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Polygon.html" > Polygon< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.PolyK.html" > PolyK< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.PrimitiveShader.html" > PrimitiveShader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Rectangle.html" > Rectangle< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.RenderTexture.html" > RenderTexture< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.RGBSplitFilter.html" > RGBSplitFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Rope.html" > Rope< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.RoundedRectangle.html" > RoundedRectangle< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.SepiaFilter.html" > SepiaFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.SmartBlurFilter.html" > SmartBlurFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Spine.html" > Spine< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.SpineLoader.html" > SpineLoader< / a >
< / li >
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< li class = "class-depth-1" >
< a href = "PIXI.SpineTextureLoader.html" > SpineTextureLoader< / a >
< / li >
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< li class = "class-depth-1" >
< a href = "PIXI.Sprite.html" > Sprite< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.SpriteBatch.html" > SpriteBatch< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.SpriteSheetLoader.html" > SpriteSheetLoader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Stage.html" > Stage< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Strip.html" > Strip< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.StripShader.html" > StripShader< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Text.html" > Text< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.Texture.html" > Texture< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.TilingSprite.html" > TilingSprite< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.TiltShiftFilter.html" > TiltShiftFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.TiltShiftXFilter.html" > TiltShiftXFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.TiltShiftYFilter.html" > TiltShiftYFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.TwistFilter.html" > TwistFilter< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.VideoTexture.html" > VideoTexture< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.WebGLBlendModeManager.html" > WebGLBlendModeManager< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.WebGLFastSpriteBatch.html" > WebGLFastSpriteBatch< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.WebGLFilterManager.html" > WebGLFilterManager< / a >
< / li >
< li class = "class-depth-1" >
< a href = "PIXI.WebGLRenderer.html" > WebGLRenderer< / a >
< / li >
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< / ul >
< / li >
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< li class = "dropdown" >
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< a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" > Core< b class = "caret" > < / b > < / a >
< ul class = "dropdown-menu " >
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< li class = "class-depth-1" > < a href = "Phaser.Game.html" > Game< / a > < / li >
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< li class = "class-depth-1" > < a href = "Phaser.World.html" > World< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Loader.html" > Loader< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Time.html" > Time< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Camera.html" > Camera< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.StateManager.html" > State Manager< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.TweenManager.html" > Tween Manager< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.SoundManager.html" > Sound Manager< / a > < / li >
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< li class = "class-depth-1" > < a href = "Phaser.Input.html" > Input Manager< / a > < / li >
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< li class = "class-depth-1" > < a href = "Phaser.ScaleManager.html" > Scale Manager< / a > < / li >
< / ul >
< / li >
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< li class = "dropdown" >
< a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" > Game Objects< b class = "caret" > < / b > < / a >
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< ul class = "dropdown-menu " >
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< li class = "class-depth-1" > < a href = "Phaser.GameObjectFactory.html" > Factory (game.add)< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.GameObjectCreator.html" > Creator (game.make)< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Sprite.html" > Sprite< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Image.html" > Image< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Sound.html" > Sound< / a > < / li >
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< li class = "class-depth-1" > < a href = "Phaser.Particles.Arcade.Emitter.html" > Particle Emitter< / a > < / li >
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< li class = "class-depth-1" > < a href = "Phaser.Particle.html" > Particle< / a > < / li >
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< li class = "class-depth-1" > < a href = "Phaser.Text.html" > Text< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Tween.html" > Tween< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.BitmapText.html" > BitmapText< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Tilemap.html" > Tilemap< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.BitmapData.html" > BitmapData< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.RetroFont.html" > RetroFont< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Button.html" > Button< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Animation.html" > Animation< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Graphics.html" > Graphics< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.RenderTexture.html" > RenderTexture< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.TileSprite.html" > TileSprite< / a > < / li >
< / ul >
< / li >
< li class = "dropdown" >
< a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" > Geometry< b class = "caret" > < / b > < / a >
< ul class = "dropdown-menu " >
< li class = "class-depth-1" > < a href = "Phaser.Circle.html" > Circle< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Rectangle.html" > Rectangle< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Point.html" > Point< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Line.html" > Line< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Ellipse.html" > Ellipse< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Polygon.html" > Polygon< / a > < / li >
< / ul >
< / li >
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< li class = "dropdown" >
< a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" > Physics< b class = "caret" > < / b > < / a >
< ul class = "dropdown-menu " >
< li class = "class-depth-1" > < a href = "Phaser.Physics.Arcade.html" > Arcade Physics< / a > < / li >
< li class = "class-depth-2" > < a href = "Phaser.Physics.Arcade.Body.html" > Body< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Physics.P2.html" > P2 Physics< / a > < / li >
< li class = "class-depth-2" > < a href = "Phaser.Physics.P2.Body.html" > Body< / a > < / li >
< li class = "class-depth-2" > < a href = "Phaser.Physics.P2.Spring.html" > Spring< / a > < / li >
< li class = "class-depth-2" > < a href = "Phaser.Physics.P2.CollisionGroup.html" > CollisionGroup< / a > < / li >
< li class = "class-depth-2" > < a href = "Phaser.Physics.P2.ContactMaterial.html" > ContactMaterial< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Physics.Ninja.html" > Ninja Physics< / a > < / li >
< li class = "class-depth-2" > < a href = "Phaser.Physics.Body.html" > Body< / a > < / li >
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< / ul >
< / li >
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< li class = "dropdown" >
< a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" > Input< b class = "caret" > < / b > < / a >
< ul class = "dropdown-menu " >
< li class = "class-depth-1" > < a href = "Phaser.InputHandler.html" > Input Handler< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Pointer.html" > Pointer< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Mouse.html" > Mouse< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Keyboard.html" > Keyboard< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Key.html" > Key< / a > < / li >
< li class = "class-depth-1" > < a href = "Phaser.Gamepad.html" > Gamepad< / a > < / li >
< / ul >
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< li class = "dropdown" >
< a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" > Community< b class = "caret" > < / b > < / a >
< ul class = "dropdown-menu " >
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< li class = "class-depth-1" > < a href = "https://leanpub.com/u/photonstorm" > Phaser Books< / a > < / li >
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< li class = "class-depth-1" > < a href = "https://github.com/photonstorm/phaser" > Phaser Github< / a > < / li >
< li class = "class-depth-1" > < a href = "http://examples.phaser.io" > Phaser Examples< / a > < / li >
< li class = "class-depth-1" > < a href = "https://github.com/photonstorm/phaser-plugins" > Phaser Plugins< / a > < / li >
< li class = "class-depth-1" > < a href = "http://www.html5gamedevs.com/forum/14-phaser/" > Forum< / a > < / li >
< li class = "class-depth-1" > < a href = "http://stackoverflow.com/questions/tagged/phaser-framework" > Stack Overflow< / a > < / li >
< li class = "class-depth-1" > < a href = "https://confirmsubscription.com/h/r/369DE48E3E86AF1E" > Newsletter< / a > < / li >
< li class = "class-depth-1" > < a href = "https://twitter.com/photonstorm" > Twitter< / a > < / li >
< li class = "class-depth-1" > < a href = "http://www.html5gamedevs.com/topic/4470-official-phaserio-irc-channel-phaserio-on-freenode/" > IRC< / a > < / li >
< li class = "class-depth-1" > < a href = "https://www.gittip.com/photonstorm/" > GitTip< / a > < / li >
< / ul >
< / li >
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< / ul >
< / div >
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< div class = "row-fluid" >
< div class = "span12" >
< div id = "main" >
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< h1 class = "page-title" > Source: D:/wamp/www/phaser/src/geom/Circle.js< / h1 >
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< section >
< article >
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< pre class = "sunlight-highlight-javascript linenums" > /**
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* @author Richard Davey < rich@photonstorm.com>
* @copyright 2014 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
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* Creates a new Circle object with the center coordinate specified by the x and y parameters and the diameter specified by the diameter parameter.
* If you call this function without parameters, a circle with x, y, diameter and radius properties set to 0 is created.
*
* @class Phaser.Circle
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* @constructor
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* @param {number} [x=0] - The x coordinate of the center of the circle.
* @param {number} [y=0] - The y coordinate of the center of the circle.
* @param {number} [diameter=0] - The diameter of the circle.
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*/
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Phaser.Circle = function (x, y, diameter) {
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x = x || 0;
y = y || 0;
diameter = diameter || 0;
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/**
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* @property {number} x - The x coordinate of the center of the circle.
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*/
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this.x = x;
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/**
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* @property {number} y - The y coordinate of the center of the circle.
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*/
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this.y = y;
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/**
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* @property {number} _diameter - The diameter of the circle.
* @private
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*/
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this._diameter = diameter;
if (diameter > 0)
{
/**
* @property {number} _radius - The radius of the circle.
* @private
*/
this._radius = diameter * 0.5;
}
else
{
this._radius = 0;
}
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};
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Phaser.Circle.prototype = {
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type: null,
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/**
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* The circumference of the circle.
* @method Phaser.Circle#circumference
* @return {number}
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*/
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circumference: function () {
return 2 * (Math.PI * this._radius);
},
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/**
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* Returns the framing rectangle of the circle as a Phaser.Rectangle object
* @method Phaser.Circle#getBounds
* @return {Phaser.Rectangle} The bounds of the Circle.
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*/
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getBounds: function () {
return new Phaser.Rectangle(this.x - this.radius, this.y - this.radius, this.radius * 2, this.radius * 2);
},
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/**
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* Sets the members of Circle to the specified values.
* @method Phaser.Circle#setTo
* @param {number} x - The x coordinate of the center of the circle.
* @param {number} y - The y coordinate of the center of the circle.
* @param {number} diameter - The diameter of the circle.
* @return {Circle} This circle object.
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*/
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setTo: function (x, y, diameter) {
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this.x = x;
this.y = y;
this._diameter = diameter;
this._radius = diameter * 0.5;
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return this;
},
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/**
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* Copies the x, y and diameter properties from any given object to this Circle.
* @method Phaser.Circle#copyFrom
* @param {any} source - The object to copy from.
* @return {Circle} This Circle object.
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*/
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copyFrom: function (source) {
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return this.setTo(source.x, source.y, source.diameter);
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},
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/**
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* Copies the x, y and diameter properties from this Circle to any given object.
* @method Phaser.Circle#copyTo
* @param {any} dest - The object to copy to.
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* @return {object} This dest object.
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*/
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copyTo: function (dest) {
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dest.x = this.x;
dest.y = this.y;
dest.diameter = this._diameter;
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return dest;
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},
/**
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* Returns the distance from the center of the Circle object to the given object
* (can be Circle, Point or anything with x/y properties)
* @method Phaser.Circle#distance
* @param {object} dest - The target object. Must have visible x and y properties that represent the center of the object.
* @param {boolean} [round=false] - Round the distance to the nearest integer.
* @return {number} The distance between this Point object and the destination Point object.
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*/
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distance: function (dest, round) {
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var distance = Phaser.Math.distance(this.x, this.y, dest.x, dest.y);
return round ? Math.round(distance) : distance;
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},
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/**
* Returns a new Circle object with the same values for the x, y, width, and height properties as this Circle object.
* @method Phaser.Circle#clone
* @param {Phaser.Circle} output - Optional Circle object. If given the values will be set into the object, otherwise a brand new Circle object will be created and returned.
* @return {Phaser.Circle} The cloned Circle object.
*/
clone: function (output) {
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if (typeof output === "undefined" || output === null)
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{
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output = new Phaser.Circle(this.x, this.y, this.diameter);
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}
else
{
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output.setTo(this.x, this.y, this.diameter);
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}
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return output;
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},
/**
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* Return true if the given x/y coordinates are within this Circle object.
* @method Phaser.Circle#contains
* @param {number} x - The X value of the coordinate to test.
* @param {number} y - The Y value of the coordinate to test.
* @return {boolean} True if the coordinates are within this circle, otherwise false.
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*/
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contains: function (x, y) {
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return Phaser.Circle.contains(this, x, y);
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},
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/**
* Returns a Point object containing the coordinates of a point on the circumference of the Circle based on the given angle.
* @method Phaser.Circle#circumferencePoint
* @param {number} angle - The angle in radians (unless asDegrees is true) to return the point from.
* @param {boolean} [asDegrees=false] - Is the given angle in radians (false) or degrees (true)?
* @param {Phaser.Point} [out] - An optional Point object to put the result in to. If none specified a new Point object will be created.
* @return {Phaser.Point} The Point object holding the result.
*/
circumferencePoint: function (angle, asDegrees, out) {
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return Phaser.Circle.circumferencePoint(this, angle, asDegrees, out);
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},
/**
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* Adjusts the location of the Circle object, as determined by its center coordinate, by the specified amounts.
* @method Phaser.Circle#offset
* @param {number} dx - Moves the x value of the Circle object by this amount.
* @param {number} dy - Moves the y value of the Circle object by this amount.
* @return {Circle} This Circle object.
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*/
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offset: function (dx, dy) {
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this.x += dx;
this.y += dy;
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return this;
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},
/**
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* Adjusts the location of the Circle object using a Point object as a parameter. This method is similar to the Circle.offset() method, except that it takes a Point object as a parameter.
* @method Phaser.Circle#offsetPoint
* @param {Point} point A Point object to use to offset this Circle object (or any valid object with exposed x and y properties).
* @return {Circle} This Circle object.
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*/
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offsetPoint: function (point) {
return this.offset(point.x, point.y);
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},
/**
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* Returns a string representation of this object.
* @method Phaser.Circle#toString
* @return {string} a string representation of the instance.
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*/
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toString: function () {
return "[{Phaser.Circle (x=" + this.x + " y=" + this.y + " diameter=" + this.diameter + " radius=" + this.radius + ")}]";
}
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};
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Phaser.Circle.prototype.constructor = Phaser.Circle;
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/**
* The largest distance between any two points on the circle. The same as the radius * 2.
* @name Phaser.Circle#diameter
* @property {number} diameter - Gets or sets the diameter of the circle.
*/
Object.defineProperty(Phaser.Circle.prototype, "diameter", {
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get: function () {
return this._diameter;
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},
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set: function (value) {
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if (value > 0)
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{
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this._diameter = value;
this._radius = value * 0.5;
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}
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}
});
/**
* The length of a line extending from the center of the circle to any point on the circle itself. The same as half the diameter.
* @name Phaser.Circle#radius
* @property {number} radius - Gets or sets the radius of the circle.
*/
Object.defineProperty(Phaser.Circle.prototype, "radius", {
get: function () {
return this._radius;
},
set: function (value) {
if (value > 0)
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{
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this._radius = value;
this._diameter = value * 2;
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}
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}
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});
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/**
* The x coordinate of the leftmost point of the circle. Changing the left property of a Circle object has no effect on the x and y properties. However it does affect the diameter, whereas changing the x value does not affect the diameter property.
* @name Phaser.Circle#left
* @propety {number} left - Gets or sets the value of the leftmost point of the circle.
*/
Object.defineProperty(Phaser.Circle.prototype, "left", {
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get: function () {
return this.x - this._radius;
},
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set: function (value) {
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if (value > this.x)
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{
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this._radius = 0;
this._diameter = 0;
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}
else
{
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this.radius = this.x - value;
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}
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}
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});
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/**
* The x coordinate of the rightmost point of the circle. Changing the right property of a Circle object has no effect on the x and y properties. However it does affect the diameter, whereas changing the x value does not affect the diameter property.
* @name Phaser.Circle#right
* @property {number} right - Gets or sets the value of the rightmost point of the circle.
*/
Object.defineProperty(Phaser.Circle.prototype, "right", {
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get: function () {
return this.x + this._radius;
},
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set: function (value) {
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if (value < this.x)
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{
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this._radius = 0;
this._diameter = 0;
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}
else
{
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this.radius = value - this.x;
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}
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}
});
/**
* The sum of the y minus the radius property. Changing the top property of a Circle object has no effect on the x and y properties, but does change the diameter.
* @name Phaser.Circle#top
* @property {number} top - Gets or sets the top of the circle.
*/
Object.defineProperty(Phaser.Circle.prototype, "top", {
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get: function () {
return this.y - this._radius;
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},
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set: function (value) {
if (value > this.y)
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{
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this._radius = 0;
this._diameter = 0;
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}
else
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{
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this.radius = this.y - value;
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}
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}
});
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/**
* The sum of the y and radius properties. Changing the bottom property of a Circle object has no effect on the x and y properties, but does change the diameter.
* @name Phaser.Circle#bottom
* @property {number} bottom - Gets or sets the bottom of the circle.
*/
Object.defineProperty(Phaser.Circle.prototype, "bottom", {
get: function () {
return this.y + this._radius;
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},
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set: function (value) {
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if (value < this.y)
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{
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this._radius = 0;
this._diameter = 0;
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}
else
{
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this.radius = value - this.y;
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}
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}
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});
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/**
* The area of this Circle.
* @name Phaser.Circle#area
* @property {number} area - The area of this circle.
* @readonly
*/
Object.defineProperty(Phaser.Circle.prototype, "area", {
get: function () {
if (this._radius > 0)
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{
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return Math.PI * this._radius * this._radius;
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}
else
{
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return 0;
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}
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}
});
/**
* Determines whether or not this Circle object is empty. Will return a value of true if the Circle objects diameter is less than or equal to 0; otherwise false.
* If set to true it will reset all of the Circle objects properties to 0. A Circle object is empty if its diameter is less than or equal to 0.
* @name Phaser.Circle#empty
* @property {boolean} empty - Gets or sets the empty state of the circle.
*/
Object.defineProperty(Phaser.Circle.prototype, "empty", {
get: function () {
return (this._diameter === 0);
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},
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set: function (value) {
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if (value === true)
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{
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this.setTo(0, 0, 0);
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}
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}
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});
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/**
* Return true if the given x/y coordinates are within the Circle object.
* @method Phaser.Circle.contains
* @param {Phaser.Circle} a - The Circle to be checked.
* @param {number} x - The X value of the coordinate to test.
* @param {number} y - The Y value of the coordinate to test.
* @return {boolean} True if the coordinates are within this circle, otherwise false.
*/
Phaser.Circle.contains = function (a, x, y) {
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// Check if x/y are within the bounds first
if (a.radius > 0 & & x >= a.left & & x < = a.right & & y >= a.top & & y < = a.bottom)
{
var dx = (a.x - x) * (a.x - x);
var dy = (a.y - y) * (a.y - y);
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return (dx + dy) < = (a.radius * a.radius);
}
else
{
return false;
}
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};
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/**
* Determines whether the two Circle objects match. This method compares the x, y and diameter properties.
* @method Phaser.Circle.equals
* @param {Phaser.Circle} a - The first Circle object.
* @param {Phaser.Circle} b - The second Circle object.
* @return {boolean} A value of true if the object has exactly the same values for the x, y and diameter properties as this Circle object; otherwise false.
*/
Phaser.Circle.equals = function (a, b) {
return (a.x == b.x & & a.y == b.y & & a.diameter == b.diameter);
};
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/**
* Determines whether the two Circle objects intersect.
* This method checks the radius distances between the two Circle objects to see if they intersect.
* @method Phaser.Circle.intersects
* @param {Phaser.Circle} a - The first Circle object.
* @param {Phaser.Circle} b - The second Circle object.
* @return {boolean} A value of true if the specified object intersects with this Circle object; otherwise false.
*/
Phaser.Circle.intersects = function (a, b) {
return (Phaser.Math.distance(a.x, a.y, b.x, b.y) < = (a.radius + b.radius));
};
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/**
* Returns a Point object containing the coordinates of a point on the circumference of the Circle based on the given angle.
* @method Phaser.Circle.circumferencePoint
* @param {Phaser.Circle} a - The first Circle object.
* @param {number} angle - The angle in radians (unless asDegrees is true) to return the point from.
* @param {boolean} [asDegrees=false] - Is the given angle in radians (false) or degrees (true)?
* @param {Phaser.Point} [out] - An optional Point object to put the result in to. If none specified a new Point object will be created.
* @return {Phaser.Point} The Point object holding the result.
*/
Phaser.Circle.circumferencePoint = function (a, angle, asDegrees, out) {
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if (typeof asDegrees === "undefined") { asDegrees = false; }
if (typeof out === "undefined") { out = new Phaser.Point(); }
if (asDegrees === true)
{
angle = Phaser.Math.degToRad(angle);
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}
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out.x = a.x + a.radius * Math.cos(angle);
out.y = a.y + a.radius * Math.sin(angle);
return out;
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};
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/**
* Checks if the given Circle and Rectangle objects intersect.
* @method Phaser.Circle.intersectsRectangle
* @param {Phaser.Circle} c - The Circle object to test.
* @param {Phaser.Rectangle} r - The Rectangle object to test.
* @return {boolean} True if the two objects intersect, otherwise false.
*/
Phaser.Circle.intersectsRectangle = function (c, r) {
var cx = Math.abs(c.x - r.x - r.halfWidth);
var xDist = r.halfWidth + c.radius;
if (cx > xDist)
{
return false;
}
var cy = Math.abs(c.y - r.y - r.halfHeight);
var yDist = r.halfHeight + c.radius;
if (cy > yDist)
{
return false;
}
if (cx < = r.halfWidth || cy < = r.halfHeight)
{
return true;
}
var xCornerDist = cx - r.halfWidth;
var yCornerDist = cy - r.halfHeight;
var xCornerDistSq = xCornerDist * xCornerDist;
var yCornerDistSq = yCornerDist * yCornerDist;
var maxCornerDistSq = c.radius * c.radius;
return xCornerDistSq + yCornerDistSq < = maxCornerDistSq;
};
// Because PIXI uses its own Circle, we'll replace it with ours to avoid duplicating code or confusion.
PIXI.Circle = Phaser.Circle;
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< / pre >
< / article >
< / section >
< / div >
< div class = "clearfix" > < / div >
< footer >
< span class = "copyright" >
Phaser Copyright © 2012-2014 Photon Storm Ltd.
< / span >
< br / >
< span class = "jsdoc-message" >
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Documentation generated by < a href = "https://github.com/jsdoc3/jsdoc" > JSDoc 3.3.0-dev< / a >
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