图片三维粒子化及运动
[code lang="as3"]package{
import __AS3__.vec.Vector;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Loader;
import flash.display.PixelSnapping;
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.geom.PerspectiveProjection;
import flash.geom.Point;
import flash.geom.Rectangle;
import flash.net.URLRequest;
import flash.utils.getTimer;
import net.everyinch.geom.Particle;
[SWF(width="800",height="600",frameRate="32",backgroundColor="0x000000")]
public class ParticleImage1 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 particle:Particle = new Particle();
private var phi:Number = -Math.PI/4;
private var theta:Number = Math.PI*3/2;
public function ParticleImage1(){
init();
}
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));
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE,onLoaded);
loader.load(new URLRequest("assets/Flower.jpg"));
}
private function onLoaded(e:Event):void{
var image:Bitmap = Bitmap(e.target.content);
createParticles(image);
addEventListener(Event.ENTER_FRAME,onEnterframe);
}
private function createParticles(image:Bitmap):void{
var sampling:Number = 1;
var spread:Number = 1;
var p:Particle = particle;
for(var i:int=0;i> 16 & 0xFF);
var green:Number = Number(p.color >> 8 & 0xFF);
var blue:Number = Number(p.color & 0xFF);
var lum:Number = 0.2126*red + 0.7152*green + 0.0722*blue
p.z = zFactor*lum*lum-recess;
var u:Number = M11*p.x + M12*p.y + cosp*p.z;
f = fadeRate*(u-fadeZ);
if(f < minFade){
f = minFade;
}
else if(f > 1){
f = 1;
}
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);
color = (f*p.color