// forked from munegon's forked from: forked from: forked from: forked from: Liquid10000 // forked from Saqoosha's forked from: forked from: forked from: Liquid10000 // forked from nutsu's forked from: forked from: Liquid10000 // forked from nutsu's forked from: Liquid10000 // forked from zin0086's Liquid10000 // Vector+for each。空気は読まない package { import flash.display.*; import flash.events.*; import flash.geom.*; import flash.utils.*; [SWF(width=465, height=465, backgroundColor=0x000000, frameRate=60)] public class Liquid extends Sprite { private const NUM_PARTICLES:uint = 100000; private var particles:Vector.<Particle> = new Vector.<Particle>(NUM_PARTICLES, true); private var screen:BitmapData; private var densityMap:BitmapData; private var timer:Timer; private var seed:Number = Math.floor(Math.random() * 0xFFFF); private var offset:Array = [new Point(), new Point()]; private var colotTrans:ColorTransform = new ColorTransform(0.8, 0.8, 0.8); public function Liquid() { for (var i:uint=0; i<NUM_PARTICLES; i++) { particles[i] = new Particle(Math.random() * 465, Math.random() * 465); } densityMap = new BitmapData(233, 233, false, 0x000000); screen = new BitmapData(465, 465, false, 0x000000); addChild(new Bitmap(screen)); addEventListener(Event.ENTER_FRAME, loop); timer = new Timer(100, 0); timer.addEventListener(TimerEvent.TIMER, reset); timer.start(); reset(); } private function loop(event:Event):void { screen.lock(); screen.colorTransform(screen.rect, colotTrans); for each (var p:Particle in particles) { var c:uint = densityMap.getPixel(p.px >> 1, p.py >> 1); p.px += p.vx += p.ax += ((0xFF & c ) - 0x80) * 0.0005; p.py += p.vy += p.ay += ((0xFF & c >> 8) - 0x80) * 0.0005; p.ax *= 0.96; p.ay *= 0.96; p.vx *= 0.92; p.vy *= 0.92; screen.setPixel( p.px = ((p.px > 464) ? 0 : (p.px < 0) ? 464 : p.px), p.py = ((p.py > 464) ? 0 : (p.py < 0) ? 464 : p.py), 0xFFFFFF); } screen.unlock(); } private function reset(event:Event=null):void { densityMap.perlinNoise(117, 117, 2, seed, false, true, 6, false, offset); offset[0].x += 1.5; offset[1].y += 1.0; colotTrans.redMultiplier = Math.cos(timer.currentCount * 0.0131) * 0.2 + 0.7; colotTrans.blueMultiplier = Math.sin(timer.currentCount * 0.0572) * 0.2 + 0.7; } } } class Particle { public var vx:Number = 0; public var vy:Number = 0; public var ax:Number = 0; public var ay:Number = 0; public var px:Number; public var py:Number; public function Particle(px:Number, py:Number) { this.px = px; this.py = py; } }