Flash三维粒子光线变化5

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.StageScaleMode;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.filters.BlurFilter;
import flash.geom.Matrix3D;
import flash.geom.PerspectiveProjection;
import flash.geom.Point;
import flash.geom.Rectangle;

import net.everyinch.geom.Particle;

[SWF(width=”800″,height=”600″,frameRate=”32″,backgroundColor=”0x000000″)]
public class ParticleLight5 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 onScreen:Boolean = false;
private var phi:Number = Math.PI/2;
private var theta:Number = -Math.PI/2;
private var dragging:Boolean = false;
private var offset:Number = 80;
private var targetOffset:Number = 120;
private var targetPhi:Number = phi;
private var targetTheta:Number = theta;

public function ParticleLight5(){
init();
createParticles();

stage.addEventListener(MouseEvent.MOUSE_DOWN,onMouseDown);
stage.addEventListener(MouseEvent.MOUSE_UP,onMouseUp);
addEventListener(Event.ENTER_FRAME,onEnterframe);
}

private function onMouseDown(e:MouseEvent):void{
dragging = true;
}

private function onMouseUp(e:MouseEvent):void{
dragging = false;
}

private function init():void{
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.frameRate = 62;
//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 = 50;;
var radius2:Number = 45;
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 = 250;
var numT:int = 350;
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 + offset;
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);trace(i);
if((i > 0) && (i < 480000)){ increment = bmpd.getPixel(ix,iy) & 0xFF; increment = fadeRate*(u-depth0)+1; increment = (increment > maxLevel) ? maxLevel : (increment < 0 ? 0 : increment); level = (color >> 16)+increment;
level = (level > 255)?255:level;
color = (level << 16) | (level << 8) | level; buffer[i] = color; } p = p.next; }while(p); bmpd.lock(); bmpd.setVector(bmpd.rect,buffer); bmpd.unlock(bmpd.rect); } } } [/code]