Away3D基础教程（四）：获取载入模型的每个面，并进行鼠标交互

南京交互式多媒体/多点触摸/三维虚拟现实/unity3D/Flash/Flex/ActionScript3 QQ:781444988

效果预览:

 

很多时候我们需要控制加载模型的多个面，并让其响应不同的鼠标事件，比如单独给某一个面换贴图，或者点击不同的面显示不同的内容等等。要想获取模型的每个面其实很简单，在加载模型的时候采用AssetEvent.ASSET_COMPLETE侦听器即可精确的获得模型的每个面，在加载的过程中，模型的每个面自动转换成mesh对象，对每一个mesh对象启用鼠标交互mesh.mouseEnabled = true;和添加侦听器即可使模型的每个面响应鼠标事件。

 

本例完整源码如下：

package  

{

    import away3d.cameras.Camera3D;

    import away3d.containers.View3D;

    import away3d.controllers.HoverController;

    import away3d.entities.Mesh;

    import away3d.events.LoaderEvent;

    import away3d.events.MouseEvent3D;

    import away3d.loaders.Loader3D;

    import away3d.materials.ColorMaterial;

    import flash.display.Sprite;

    import flash.events.Event;

    import flash.events.MouseEvent;

    import flash.display.*;

    import away3d.events.AssetEvent;

    import away3d.library.assets.AssetType;

    import away3d.loaders.parsers.Parsers;

    import flash.geom.Vector3D;

    import flash.text.TextField;

    

    /**

     * ...

     * @author yl

     */

    [SWF(width='800',height='600',frameRate="60", backgroundColor="0x000000")]

    public class MyAway3d_4 extends Sprite 

    {

        

        [Embed(source = "/../embeds/myqiu.awd", mimeType="application/octet-stream")]

        private static var _dModel:Class;

        

        [Embed(source = "../embeds/myAway3d_1.jpg")]

        private static var _img1:Class;

        

        private var _view:View3D;

        private var _camera:Camera3D;

        private var _hovController:HoverController;

        private var _loader3D:Loader3D;

        

        private var _meshArray:Array = [];

        private var _index:int = 1;

        

         private var _lastTiltAngle:Number; //camera变化前的X轴角度  

         private var _lastPanAngle:Number; //camera变化前的Y轴角度   

         private var _lastMouseX:Number; //鼠标移动之前的X轴坐标   

         private var _lastMouseY:Number; //鼠标移动之前的Y轴坐标  

         

         private var _move:Boolean;

         

         private var _infoText:TextField;



        

        public function MyAway3d_4() 

        {

             //侦听舞台初始化完毕

            if (stage) {

                init();

            }else {

                this.addEventListener(Event.ADDED_TO_STAGE, init);

            }

        }

        private function init(e:Event=null):void {

            stage.scaleMode = StageScaleMode.NO_SCALE;

            stage.align = StageAlign.TOP_LEFT;

            this.removeEventListener(Event.ADDED_TO_STAGE, init);

            

            _infoText = new TextField();

            addChild(_infoText);

            _infoText.textColor = 0xFFFFFF;

            _infoText.selectable = false;

            _infoText.text = "选择的对象是：\nQQ：781444988";

                        

            //实例化视口

            _view = new View3D();

            addChild(_view);

            _view.x = stage.stageWidth / 2 - 150;

            _view.y = stage.stageHeight / 2 - 150;

            //设置抗锯齿参数

            _view.antiAlias = 6;

            _view.width = 300;

            _view.height = 300;

            _camera = _view.camera;

            _hovController = new HoverController(_camera, null, 180, 0, 1200,-90,90);

            _hovController.yFactor = 1;

            

            Parsers.enableAllBundled();

            

            _loader3D = new Loader3D();

            _loader3D.addEventListener(AssetEvent.ASSET_COMPLETE, onAssetComplete);

            _loader3D.addEventListener(LoaderEvent.RESOURCE_COMPLETE, loadComplete);

            _loader3D.loadData(new _dModel());

            //_view.scene.addChild(_loader3D);

            

            _hovController.lookAtObject = _loader3D;

            //_view.camera.lookAt(_loader3D.position);

            //_view.camera.z = -1500;

            

            stage.addEventListener(MouseEvent.MOUSE_DOWN, downHandler);

            stage.addEventListener(MouseEvent.MOUSE_UP, upHandler);

            this.addEventListener(Event.ENTER_FRAME, onRender);

        }

        

        private function upHandler(e:MouseEvent):void 

        {

            _move = false;  

            stage.removeEventListener(Event.MOUSE_LEAVE, leaveHandler);  

        }

        

        private function downHandler(e:MouseEvent):void 

        {

            _move = true;

            _lastTiltAngle = _hovController.tiltAngle; //记录camera的X轴旋转角度  

            _lastPanAngle = _hovController.panAngle; //记录camera的Y轴旋转角度  

            _lastMouseX = stage.mouseX;  

            _lastMouseY = stage.mouseY;   

            //添加鼠标离开stage区域的事件  

            stage.addEventListener(Event.MOUSE_LEAVE, leaveHandler); 



        }

        

        private function leaveHandler(e:Event):void 

        {

            _move = false;  

            stage.removeEventListener(Event.MOUSE_LEAVE, leaveHandler);  

        }

        

        private function loadComplete(e:LoaderEvent):void 

        {

            trace("load complete", _meshArray.length);

            //_view.scene.addChild(_loader3D);

            /*(_meshArray[15] as Mesh).material = new ColorMaterial(0xFF0000);

            (_meshArray[15] as Mesh).addEventListener(MouseEvent3D.CLICK, meshClick);

            (_meshArray[16] as Mesh).material = new ColorMaterial(0x00FF00);

            (_meshArray[16] as Mesh).addEventListener(MouseEvent3D.CLICK, meshClick);*/

        }

        

        private function meshClick(e:MouseEvent3D):void 

        {

            trace(e.target.name);

            _infoText.text = "选择的对象是："+e.target.name+"\nQQ：781444988";

        }

        

        

        private function onAssetComplete(e:AssetEvent):void 

        {

            if (e.asset.assetType == AssetType.MESH) {

                var mesh:Mesh = e.asset as Mesh;

                mesh.mouseEnabled = true;

                mesh.material = new ColorMaterial(0xFFFFFF * Math.random());

                mesh.name = String(_index);

                mesh.addEventListener(MouseEvent3D.CLICK, meshClick);

                _index++;

                _view.scene.addChild(mesh);

                _meshArray.push(mesh);

            }

        }

        

        private function onRender(e:Event):void 

        {

            if (_move) {

                _hovController.tiltAngle = _lastTiltAngle + 0.3 * (stage.mouseY - _lastMouseY);  

                _hovController.panAngle = _lastPanAngle + 0.3 * (stage.mouseX - _lastMouseX);  



            }

                        

            _view.camera.lookAt(_loader3D.position);

            _view.render();

        }

        

    }



}

本例中的AWD模型下载：http://files.cnblogs.com/njflash/myqiu.rar