// forked from bkzen's 10万個ぱーてぃくる package { import flash.display.Sprite; import flash.display.StageAlign; import flash.display.StageScaleMode; import flash.events.Event; import flash.events.MouseEvent; import net.hires.debug.Stats; /** * なんかいっぱい動かすテスト * 洗濯機みたいになってます。 * @author jc at bk-zen.com */ [SWF(backgroundColor = "0x000000", frameRate = "30")] public class Test3 extends Sprite { protected const NUM_OF_PARTICLES: int = 100000; private var main: TestMain; public function Test3() { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); // main = new TestMain(stage.stageWidth, stage.stageHeight, NUM_OF_PARTICLES); addChild(main.view); addChild(new Stats()); stage.scaleMode = StageScaleMode.NO_SCALE; stage.align = StageAlign.TOP_LEFT; stage.addEventListener(Event.RESIZE, onResize); stage.addEventListener(MouseEvent.CLICK, onClick); addEventListener(Event.ENTER_FRAME, onEnter); } private function onClick(e:MouseEvent):void { main.change(); } private function onEnter(e:Event):void { main.draw(mouseX, mouseY); } // りサイズ （未実装） private function onResize(e:Event):void { main.resize(stage.stageWidth, stage.stageHeight); } } } import flash.display.Bitmap; import flash.display.BitmapData; import flash.geom.ColorTransform; import flash.geom.Point; import flash.utils.ByteArray; class TestMain { private var w: int; private var h: int; private var mw: int; private var mh: int; public var view: Bitmap; private var bmpData: BitmapData; private var forceMap: BitmapData; private var randomSeed: int; private var particles: Particle; private var num: int; private var color: uint = 0xF0F0FF; private var count: int = 0; private var colorTr: ColorTransform; public function TestMain(w: int, h: int, numOfParticles: int) { this.w = w; mw = w >> 1; this.h = h; mh = h >> 1; bmpData = new BitmapData(w, h, false, 0x00000000); forceMap = new BitmapData(mw, mh, false); forceMap.perlinNoise(mw >> 1, mh >> 1, 4, Math.random() * 0xFFFF, false, true, 3); view = new Bitmap(bmpData); num = numOfParticles; var i: int; var prev: Particle = particles = new Particle(); var p: Particle; while (++i <= num) { p = new Particle(); p.x = Math.random() * w; p.y = Math.random() * h; prev.next = p; prev = p; } colorTr = new ColorTransform(1, 1, 1, 1, -32, -16, -16); } // 描画、マウスの判定を後で追加予定 public function draw(mouseX: Number, mouseY: Number): void { var p: Particle = particles; var col: uint; bmpData.lock(); bmpData.colorTransform(bmpData.rect, colorTr); while ((p = p.next) != null) { col = forceMap.getPixel(p.x >> 1, p.y >> 1); p.x += (p.vx = p.vx * 0.98 + (( col >> 16 & 0xff)-128) * 0.004); p.y += (p.vy = p.vy * 0.98 + (( col >> 8 & 0xff)-128) * 0.004); if (p.x < 0) p.x += w; else if (p.x >= w) p.x -= w; if (p.y < 0) p.y += h; else if (p.y >= h) p.y -= h; bmpData.setPixel(p.x >> 0, p.y >> 0, color); } bmpData.unlock(); } public function change(): void { forceMap.perlinNoise(mw, mh, 4, Math.random() * 0xFFFF, false, true, 7); } public function resize(w: Number, h: Number): void { this.w = w; this.h = h; if (bmpData) { bmpData.dispose(); } bmpData = new BitmapData(w, h, false, 0x00000000); view.bitmapData = bmpData; } } class Particle { public var x: Number = 0; public var y: Number = 0; public var vx: Number = 0; public var vy: Number = 0; public var next: Particle; public function Particle() { } }