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Liquid100000

Vector+for each。空気は読まない

forked:4
favorite:24
lines:65
license : All rights reserved
modified : 2009-04-16 01:21:13

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// 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;
	}
}

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