// forked from paq's [Stardust] RendererにcopyPixelsを使う package { import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.Graphics; import flash.display.Shape; import flash.display.Sprite; import flash.display.StageQuality; import flash.events.Event; import flash.geom.ColorTransform; import idv.cjcat.stardust.common.clocks.SteadyClock; import net.hires.debug.Stats; [SWF(width = 465, height = 465, backgroundColor = 0x000000, frameRate = 60)] public class Main extends Sprite { static private const COLOR_TRANSFORM:ColorTransform = new ColorTransform (0.9, 0.9, 0.95); private var _emitter:MyEmitter; private var _canvas:BitmapData; public function Main():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); _canvas = new BitmapData(465, 465, false, 0x000000); var bmp:Bitmap = new Bitmap(_canvas); addChild(bmp); var sp:Shape = new Shape(); var g:Graphics = sp.graphics; g.lineStyle(2, 0x333333); g.beginFill(0xFFFFFF, 0.5); g.moveTo(0, 5); g.lineTo(10, 5); g.lineTo(10, 0); g.lineTo(20, 10); g.lineTo(10, 20); g.lineTo(10, 15); g.lineTo(0, 15); g.lineTo(0, 5); //var particleBitmap:BitmapData = new BitmapData(20, 20, true, 0x00000000); //particleBitmap.draw(sp); _emitter = new MyEmitter(new SteadyClock(30)); var renderer:DirectedCopyPixelsRenderer = new DirectedCopyPixelsRenderer(_canvas, sp); renderer.addEmitter(_emitter); stage.quality = StageQuality.LOW; addChild(new Stats()); addEventListener(Event.ENTER_FRAME, loop); } private function loop(e:Event):void { _canvas.colorTransform(_canvas.rect, COLOR_TRANSFORM); _emitter.point.x = stage.mouseX - 10; _emitter.point.y = stage.mouseY - 10; _emitter.step(); } } } import flash.display.BitmapData; import flash.display.DisplayObject; import flash.geom.Point; import flash.geom.Matrix; import idv.cjcat.stardust.common.actions.Age; import idv.cjcat.stardust.common.actions.DeathLife; import idv.cjcat.stardust.common.actions.ScaleCurve; import idv.cjcat.stardust.common.clocks.Clock; import idv.cjcat.stardust.common.events.EmitterEvent; import idv.cjcat.stardust.common.initializers.Life; import idv.cjcat.stardust.common.math.UniformRandom; import idv.cjcat.stardust.common.particles.ParticleIterator; import idv.cjcat.stardust.common.renderers.Renderer; import idv.cjcat.stardust.twoD.actions.Move; import idv.cjcat.stardust.twoD.emitters.Emitter2D; import idv.cjcat.stardust.twoD.fields.UniformField; import idv.cjcat.stardust.twoD.initializers.Position; import idv.cjcat.stardust.twoD.initializers.Velocity; import idv.cjcat.stardust.twoD.particles.Particle2D; import idv.cjcat.stardust.twoD.zones.LazySectorZone; import idv.cjcat.stardust.twoD.zones.SinglePoint; import idv.cjcat.stardust.common.math.StardustMath; class MyEmitter extends Emitter2D { public var point:SinglePoint; public function MyEmitter(clock:Clock) { super(clock) point = new SinglePoint(); addInitializer(new Position(point)); addInitializer(new Velocity(new LazySectorZone(3, 1))); addInitializer(new Life(new UniformRandom(50, 50))); addAction(new Move()); addAction(new Age()); addAction(new DeathLife()); } } class DirectedCopyPixelsRenderer extends Renderer { public var targetBitmapData:BitmapData; public var sourceDisplayObject:DisplayObject; public var sourceBitmapDataList:Array = []; private var point:Point; public function DirectedCopyPixelsRenderer(targetBitmapData:BitmapData = null, sourceDisplayObject:DisplayObject = null) { this.targetBitmapData = targetBitmapData; this.sourceDisplayObject = sourceDisplayObject; var width:int = this.sourceDisplayObject.width; var height:int = this.sourceDisplayObject.height; var baseBitmapData:BitmapData = new BitmapData(width, height, true, 0x00000000); baseBitmapData.draw(sourceDisplayObject); sourceBitmapDataList[0] = baseBitmapData; var matrix:Matrix = new Matrix(); for (var i:int = 1; i < 360; i++) { var bmd:BitmapData = new BitmapData(width, height, true, 0x00000000); matrix.translate(-width / 2, -height / 2); matrix.rotate(1 * StardustMath.DEGREE_TO_RADIAN); matrix.translate(width / 2, height / 2); bmd.draw(baseBitmapData, matrix); sourceBitmapDataList[i] = bmd; } point = new Point(); } override protected function render(e:EmitterEvent):void { if (!targetBitmapData) return; targetBitmapData.lock(); var particle:Particle2D; var rotation:int; var sourceImage:BitmapData var iter:ParticleIterator = e.particles.getIterator(); while (particle = iter.particle as Particle2D) { point.x = particle.x; point.y = particle.y; rotation = int(Math.atan2(particle.vy, particle.vx) * StardustMath.RADIAN_TO_DEGREE); if (rotation < 0) rotation += 360; sourceImage = sourceBitmapDataList[rotation]; targetBitmapData.copyPixels(sourceImage, sourceImage.rect, point); iter.next(); } targetBitmapData.unlock(); } }