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使用FLASH播放器免费咨询***：&& 对Alternativa3D渲染引擎和AlternativaPhysics物理引擎做了下测试。
&& 在上个demo的基础上做了下修改，引入了物理引擎的测试。
&& DEMO地址：
在IE下感觉蛮卡的，可能是因为IE没有显卡加速的缘故，在chrome/firefox下运行良好。
WSAD为方向健，鼠标可以拖拽方向。
关于AlternativaPhysics，个人感觉physics3dintegration用着实在是比较别扭。所以自己实现了二个类重新封装了物体显示和物理刚体。
Alternativa3D中对贴图的处理没有加入共享贴图的概念，有时相同的物体得让GPU创建几次贴图，所以对这个也做了下优化。
具体就不多说了，贴代码 可能会更为直观一点。
PhysicsObject： 自然物体，包含显示及物理刚体概念。未完成，只写了个大概的样子。
public class PhysicsObject
private static var _matrix:Matrix4 = new Matrix4();
public function PhysicsObject()
createRender();
createBody();
protected var _render:Object3D;
public function get render():Object3D{
public function set render(value:Object3D):void{
updateTransform();
//物理刚体
protected var _body:B
private var _collision:CollisionP
public function get body():Body{
//创建body
protected function createBody():void{
_body = new Body();
protected function createRender():void{
protected var _transform:Matrix4 = Matrix4.IDENTITY;
public function set transform(value:Matrix4):void{
_transform.copy(value);
updateRendertransform(value);
if(_body){
_body.transform =
public function get transform():Matrix4{
//设置位置
public function setPosition(x:Number,y:Number,z:Number):void{
_transform.setPositionXYZ(x,y,z);
transform = _
public function setVelocity(x:Number,y:Number,z:Number):void{
if(_body){
_body.setVelocityXYZ(x,y,z);
public function setRotation(x:Number,y:Number,z:Number):void{
if(_body){
_render.rotationX =
_render.rotationY =
_render.rotationZ =
//加物理碰撞处理。
public function addPhysicsPrimitive(primitive:PhysicsPrimitive):void{
_collision = primitive.
_body.addPhysicsPrimitive(primitive,null);
_collision.calcDerivedData(localTransform);
_body.aabb.addBoundBox(_collision.aabb);
public function update(t:Number):void{
if(_body && _body.movable){
_body.interpolateToMatrixSLERP(t,_matrix);
//更新矩阵
updateRendertransform(_matrix);
//transform setter getter
protected var localTransform:Matrix4 = new Matrix4();
//将render的位置 更新到矩阵中去。
protected function updateTransform():void{
if(!_render){
this.localTransform.setMatrix(_render.x,
_render.y,
_render.z,
_render.rotationX, _render.rotationY, _render.rotationZ);
var scale:Number = _render.scaleX;
this.localTransform.m00 *=
this.localTransform.m10 *=
this.localTransform.m20 *=
scale = _render.scaleY;
this.localTransform.m01 *=
this.localTransform.m11 *=
this.localTransform.m21 *=
scale = _render.scaleZ;
this.localTransform.m02 *=
this.localTransform.m12 *=
this.localTransform.m22 *=
protected static var m4:Matrix4 = new Matrix4();
protected static var xAxis:Vector3 = new Vector3(), yAxis:Vector3 = new Vector3(), zAxis:Vector3 = new Vector3();
protected function updateRendertransform(value:Matrix4):void{
if(!_render){
m4.copy(localTransform);
m4.append(value);
_render.x = m4.m03;
_render.y = m4.m13;
_render.z = m4.m23;
m4.getAxis(0, xAxis);
m4.getAxis(1, yAxis);
m4.getAxis(2, zAxis);
var scale:Number = xAxis.length();
_render.scaleX =
xAxis.scale(1.0 / scale);
scale = yAxis.length();
_render.scaleY =
yAxis.scale(1.0 / scale);
scale = zAxis.length();
_render.scaleZ =
zAxis.scale(1.0 / scale);
m4.setAxes(xAxis, yAxis, zAxis, xAxis);
m4.getEulerAngles(xAxis);
_render.rotationX = xAxis.x;
_render.rotationY = xAxis.y;
_render.rotationZ = xAxis.z;
World: APP的封装及场景初始化，帧循环等的处理。
public class World
public function World(stage:Stage,callBack:Function)
_call = callB
public static var context:Context3D;
private var _call:F
private var _stage3D:Stage3D;
private var _context:Context3D;
private var _root:Object3D;
private var _stage:S
private var _camera:Camera3D;
private var _objects:Vector.&PhysicsObject&;
private var _cameraController:PhysicsObjectC
private var physicsScene:PhysicsS
public var physicsStep:int = 60;
//初始化stage
private function init():void{
_stage3D = _stage.stage3Ds[0];
_stage3D.addEventListener(Event.CONTEXT3D_CREATE, onContext3dCreate);
_stage3D.requestContext3D(Context3DRenderMode.AUTO);
//创建stage3d
private function onContext3dCreate(event:Event):void{
_stage3D.removeEventListener(Event.CONTEXT3D_CREATE, onContext3dCreate);
_context = _stage3D.context3D;
trace(_context.driverInfo);
context = _
initScene();
//初始化3D场景
private function initScene():void{
_root = new Object3D();
_root.addEventListener(Event3D.ADDED, addObject);
_root.addEventListener(Event3D.REMOVED, removeObject);
_objects = new Vector.&PhysicsObject&();
physicsScene = PhysicsConfiguration.MINIMAL.getPhysicsScene();
_camera = new Camera3D(1,10000);
var view:View = new View(_stage.stageWidth,_stage.stageHeight);
view.antiAlias = 2;
//设置viewport.
_camera.view =
_root.addChild(_camera);
view.hideLogo();
//进行回调。
_call.apply(null);
_stage.addEventListener(Event.ENTER_FRAME, step);
//添加物体。上传资源
private function addObject(event:Event):void{
if (_context != null) {
var obj:Object3D = event.target as Object3D;
//上传本身 及子组件的所有资源。
for each (res in obj.getResources(true)) {
res.upload(_context);
//删除 物体
private function removeObject(event:Event):void{
var obj:Object3D = event.target as Object3D;
for each (var res:Resource in obj.getResources(true)) {
res.dispose();
public function set cameraController(value:PhysicsObjectController):void{
_cameraController =
public function get camera():Camera3D{
public function createCamera():Camera3D{
var result:Camera3D = new Camera3D(1,10000);
var view:View = new View(_stage.stageWidth,_stage.stageHeight);
view.antiAlias = 2;
//设置viewport.
result.view =
view.hideLogo();
public function addCamera(camera:Camera3D):void{
public function addTestObject(obj:Object3D):void{
_root.addChild(obj);
public function addLight(light:Light3D):void{
_root.addChild(light);
//add child
public function addChild(node:PhysicsObject):void{
var render:Object3D = node.
if(render && !_root.contains(render)){
_root.addChild(render);
physicsScene.add(node.body);
_objects.push(node);
public function removeChild(node:PhysicsObject):void{
var render:Object3D = node.
if(render && _root.contains(render)){
_root.removeChild(render);
physicsScene.remove(node.body);
var index:int = _objects.indexOf(node);
_objects.splice(index,1);
private function step(event:Event):void{
var t:Number;
if (!_pause) {
var now:int = getTimer();
while (physicsScene.time & now) {
physicsScene.update(physicsStep);
t = 1 + (now - physicsScene.time)/physicsS
var obj:PhysicsO
for each(obj in _objects){
obj.update(t);
if(_cameraController){
_cameraController.update();
_camera.startTimer();
_camera.render(_stage3D);
_camera.stopTimer();
private var _pause:Boolean = false;
public function set pause(value:Boolean):void {
if (value) {
_pause = true;
physicsScene.time = getTimer();
_pause = false;
public function get pause():Boolean {
PhysicsWorld： mainApp
[SWF(width="800",height="600",frameRate="60",backgroundColor="0x000000")]
public class PhysicsWorld extends Sprite
[Embed("caodi.3DS",mimeType="application/octet-stream")]
static private const SceneMesh:C
///////////////////////models//////////////////////////////////////////
[Embed("scene.a3d",mimeType="application/octet-stream")]
static private const SceneData:C
public function PhysicsWorld()
stage.scaleMode =
StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
TextureManager.initTextures();
world = new World(stage,createScene);
private var world:W
private function createScene():void{
var camera:Camera3D = world.
this.addChild(camera.view);
this.addChild(camera.diagram);
//添加光照
var light:Light3D = new OmniLight(0xFFFFFF, 1, 10000);
light.x = 100;
light.y = 100;
light.z = 1000;
light.intensity = 1;
world.addLight(light);
light = new AmbientLight(0xFFFFFF);
light.intensity = 0.3;
world.addLight(light);
createCaodi();
for(var i:int = 0; i&30; i++){
var box:BoxView = new BoxView();
box.setPosition(-200+i*22,0,i*20+60);
world.addChild(box);
var sphere:Player = new Player();
sphere.setPosition(30,-100,0);
world.addChild(sphere);
sphere.render.addChild(camera);
//设置控制器
var _cameraController:PhysicsObjectController = new PhysicsObjectController(stage, sphere,50);
_cameraController.maxPitch = 0.9;
_cameraController.minPitch = -0.7;
_cameraController.setCameraPosition(camera,0,-60,100);
_cameraController.cameraLookAt(camera,0,0,0);
world.cameraController = _cameraC
private function createCaodi():void{
var parser:Parser3DS = new Parser3DS();
parser.parse(new SceneMesh()); //parse the first 3D object
var obj:Object3D;
for each(obj in parser.objects){
if(obj is Mesh){
obj.z = -150;
(obj as Mesh).setMaterialToAllSurfaces(new VertexLightTextureMaterial(TextureManager.airRes));
var plane:PhysicsObject = new PhysicsObject();
plane.render =
var t:CollisionTriangleMesh = new CollisionTriangleMesh(MeshUtils.createGeometryMeshFromMesh3d( obj as Mesh),CollisionType.STATIC);
plane.body.movable = false;
plane.addPhysicsPrimitive(new PhysicsPrimitive(t));
world.addChild(plane);
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