package{
	import __AS3__.vec.Vector;

	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.PixelSnapping;
	import flash.display.Sprite;
	import flash.display.StageAlign;
	import flash.display.StageQuality;
	import flash.display.StageScaleMode;
	import flash.events.Event;
	import flash.geom.Matrix3D;
	import flash.geom.PerspectiveProjection;
	import flash.geom.Point;
	import flash.geom.Rectangle;
	import flash.utils.getTimer;

	import net.everyinch.geom.Particle;

	[SWF(width="800",height="600",frameRate="32",backgroundColor="0x000000")]
	public class ParticleShape3 extends Sprite{
		private const PI2:Number = Math.PI*2;
		private var bmpd:BitmapData = new BitmapData(800,600,false,0);
		private var buffer:Vector. = new Vector.(800*600,true);
		private var focalLength:Number;
		private var matrix:Matrix3D = new Matrix3D();
		private var particle:Particle = new Particle();

		private var phi:Number = -Math.PI/4;
		private var theta:Number = Math.PI*3/2;

		public function ParticleShape3(){
			init();
			createParticles();

			addEventListener(Event.ENTER_FRAME,onEnterframe);
		}

		private function init():void{
			stage.align = StageAlign.TOP_LEFT;
			stage.scaleMode = StageScaleMode.NO_SCALE;
			stage.frameRate = 32;
			//stage.quality = StageQuality.LOW;
			stage.fullScreenSourceRect = new Rectangle(0,0,550,400);

			var perspectiveProjection:PerspectiveProjection = new PerspectiveProjection();
			perspectiveProjection.fieldOfView = 60;
			perspectiveProjection.projectionCenter = new Point(400,300);
			focalLength = perspectiveProjection.focalLength;

			addChild(new Bitmap(bmpd,PixelSnapping.NEVER,false));
		}

		private function createParticles():void{
			var radius1:Number = 110;
			var radius2:Number = 50;
			var s:Number;
			var t:Number;
			var sMin:Number = -Math.PI;
			var tMin:Number = -Math.PI;
			var sMax:Number = Math.PI;
			var tMax:Number = Math.PI;
			var numS:int = 400;
			var numT:int = 300;
			var sInc:Number = (sMax - sMin)/numS;// 0.02094395
			var tInc:Number = (tMax - tMin)/numT;// 0.01570796
			var s0:Number;
			var t0:Number;
			var sFuzz:Number = sInc;
			var tFuzz:Number = tInc;
			var p:Particle = particle;
			for(var j:int=0;j -1){
				buffer[n] = 0x000000;
			}
			var p:Particle = particle;
			do{
				var u:Number = M11*p.x + M12*p.y + cosp*p.z;
				if(u < fLen){
					m = fLen/(fLen-u)
					ix = int((-sint*p.x+cost*p.y)*m+cx);
					iy = int((M31*p.x+M32*p.y+sinp*p.z)*m+cy);
					i = int(ix+iy*bmpd.width);
					buffer[i] = 0x999999;
				}
				p = p.next;
			}while(p);
			bmpd.lock();
			bmpd.setVector(bmpd.rect,buffer);
			bmpd.unlock(bmpd.rect);
		}
	}
}

转载请注明：陈童的博客 » Flash三维粒子之混沌形状3