| 代码如下 | 复制代码 |
| package { import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.Shape; import flash.display.Sprite; import flash.events.Event; import flash.events.MouseEvent; import flash.filters.BlurFilter; import flash.geom.ColorTransform; import flash.geom.Matrix3D; import flash.geom.PerspectiveProjection; import flash.geom.Point; import flash.geom.Utils3D; import flash.geom.Vector3D; [SWF(width = 465, height = 465, backgroundColor = 0x0, frameRate = 30)] /** * ... * @author lizhi */ public class Fireworks3D extends Sprite { private var cm:Matrix3D = new Matrix3D(); private var cvm:Matrix3D = new Matrix3D(); private var m:Matrix3D = new Matrix3D(); private var vm:Matrix3D = new Matrix3D(); private var p:PerspectiveProjection = new PerspectiveProjection(); private var pm:Matrix3D; private var vins:Vector.<Number> = new Vector.<Number>(); private var vouts:Vector.<Number> = new Vector.<Number>(); private var uvts:Vector.<Number> = new Vector.<Number>(); private var v2ds:Vector.<Number> = new Vector.<Number>(); private var view2:Sprite = new Sprite(); private var view:Shape = new Shape(); private var bmd:BitmapData = new BitmapData(465, 465, true, 0); private var particles:Array = []; public function Fireworks3D() { pm = p.toMatrix3D(); addEventListener(Event.ENTER_FRAME, render); stage.addEventListener(MouseEvent.CLICK, onClick); addChild(view); //addChild(new Bitmap(bmd)); view.x = 228; view.y = 228; } private function onClick(e:Event=null):void { explode((Math.random()-0.5)*400, (Math.random()-0.5)*400, (Math.random()-0.5)*400, 0xffffff*Math.random()); } private var t:int = 0; private function render(e:Event):void { if (Math.random()<0.05) { onClick(); } cm.identity(); cm.appendTranslation(0, 200, -550); cm.appendRotation(view.mouseX/10, Vector3D.Y_AXIS,cm.position); cm.appendRotation(-view.mouseY/10, Vector3D.X_AXIS,cm.position); cvm.rawData = cm.rawData; cvm.invert(); vm.rawData = m.rawData; vm.append(cvm); view.graphics.clear(); for (var i:int = particles.length - 1; i >= 0; i--){ var p:particle = particles[i]; p.vx *= p.deceleration; p.vy *= p.deceleration; p.vz *= p.deceleration; p.vy += p.gravity; p.position.x = p.position.x + p.vx; p.position.y = p.position.y + p.vy; p.position.z = p.position.z + p.vz; p.energy *= p.deceleration; if (p.energy < 0.05){ particles.splice(i, 1); } else { p.vposition = vm.transformVector(p.position); p.v2d = Utils3D.projectVector(pm, p.vposition); view.graphics.lineStyle(400 / p.v2d.w, p.color); view.graphics.moveTo(p.v2d.x, p.v2d.y); var c:int = 0; var tc:int = 4; for (var j:int = p.tails.length - 1; j >= 0; j--,c++) { if (c>p.energy*tc) { p.tails.splice(j, 1); continue; } var v:Vector3D = p.tails[j]; var vp:Vector3D = vm.transformVector(v); var v2d:Vector3D = Utils3D.projectVector(pm, vp); view.graphics.lineStyle(500 / p.v2d.w, p.color,(p.energy*tc-c)/p.energy*tc); view.graphics.lineTo(v2d.x, v2d.y); } if (p.tails[0]) { v = p.tails[p.tails.length - 1]; if (Math.sqrt((v.x-p.position.x)*(v.x-p.position.x)+(v.y-p.position.y)*(v.y-p.position.y)+(v.z-p.position.z)*(v.z-p.position.z))>p.length) { p.tails.push(p.position.clone()); } }else { p.tails.push(p.position.clone()); } } } //bmd.colorTransform(bmd.rect, new ColorTransform(0.095, 0.095, 0.095, 0.095)); //bmd.applyFilter(bmd, bmd.rect, new Point, new BlurFilter()); //bmd.draw(view2); } private function explode(x:Number, y:Number, z:Number, color:uint):void { var c:int = 400*Math.random(); while (c-- > 0){ var p:particle = new particle; p.energy = Math.random() * 5; var m:Matrix3D = new Matrix3D(); m.appendTranslation(0, 0,(Math.random()*.2+0.8) * 5); m.appendRotation(360 * Math.random(), Vector3D.X_AXIS); m.appendRotation(360 * Math.random(), Vector3D.Y_AXIS); var v:Vector3D = m.transformVector(new Vector3D); p.vx = v.x; p.vy = v.y; p.vz = v.z; p.position = new Vector3D(x, y, z); p.color = color; p.deceleration = 0.95; p.gravity = 0.05; p.length = 2; particles.push(p); } } } } import flash.geom.Vector3D; class particle { public var tails:Array = []; public var vx:Number; public var vy:Number; public var vz:Number; public var position:Vector3D; public var vposition:Vector3D; public var v2d:Vector3D; public var energy:Number; public var color:uint; public var deceleration:Number; public var gravity:Number; public var length:Number; } |
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时间： 2024-09-21 01:10:58