package

 {

     import flash.display.MovieClip;

     import flash.display.Sprite;

     import flash.events.Event;

     import flash.geom.Point;

     import flash.geom.Vector3D;

     /**

      * @author Frost.Yen

      * @E-mail 871979853@qq.com

      * @create 2015-9-8 上午11:03:11

      *

      */

     [SWF(width="800",height="600")]

     public class LineTetrahedron extends Sprite

     {

         private var _faceArr:Array = [];

         private var _r:Number = 50;//顶点在各轴上的投影值

         private var _focus:Number = 200;//焦距

         private var _lineContainer:Sprite;

         private var _container:Sprite;

         private var _vertexArr:Array = [{x:-_r,y:_r,z:-_r},{x:_r,y:_r,z:_r},{x:-_r,y:-_r,z:_r},{x:_r,y:-_r,z:-_r}];

         public function LineTetrahedron()

         {

             initViews();

             initEventListeners();

         }

         private function initViews():void

         {

             _container = new Sprite();

             _lineContainer = new Sprite();

             _container.x = _lineContainer.x = 400;

             _container.y = _lineContainer.y = 300;

             this.addChild(_container);

             this.addChild(_lineContainer);

             createFace();

         }

         private function initEventListeners():void

         {

             this.addEventListener(Event.ENTER_FRAME,onEnterFrame);

         }

         private function onEnterFrame(e:Event):void

         {

             for (var i:int=0; i<_faceArr.length; i++)

             {

                 _faceArr[i].transform.matrix3D.appendRotation((mouseX-_lineContainer.x)/50,Vector3D.Y_AXIS);

                 _faceArr[i].transform.matrix3D.appendRotation((mouseY-_lineContainer.y)/50,Vector3D.X_AXIS);

                 _faceArr[i].Z = (_faceArr[i] as MovieClip).transform.getRelativeMatrix3D(_container).position.z;

                 _faceArr[i].X = (_faceArr[i] as MovieClip).transform.getRelativeMatrix3D(_container).position.x*(_focus/(_focus+_faceArr[i].Z));

                 _faceArr[i].Y = (_faceArr[i] as MovieClip).transform.getRelativeMatrix3D(_container).position.y*(_focus/(_focus+_faceArr[i].Z));

                 //利用焦距实现透视

             }

             _lineContainer.graphics.clear();

             _lineContainer.graphics.lineStyle(3,0x00ffff);

             _lineContainer.graphics.moveTo(_faceArr[0].X,_faceArr[0].Y);

             _lineContainer.graphics.lineTo(_faceArr[1].X,_faceArr[1].Y);

             _lineContainer.graphics.lineTo(_faceArr[2].X,_faceArr[2].Y);

             _lineContainer.graphics.lineTo(_faceArr[0].X,_faceArr[0].Y);

             _lineContainer.graphics.lineTo(_faceArr[3].X,_faceArr[3].Y);

             _lineContainer.graphics.lineTo(_faceArr[1].X,_faceArr[1].Y);

             _lineContainer.graphics.moveTo(_faceArr[3].X,_faceArr[3].Y);

             _lineContainer.graphics.lineTo(_faceArr[2].X,_faceArr[2].Y);

         }

         private function createFace():void

         {

             for(var i:int = 0;i<4;i++){

                 var mc:MovieClip = new MovieClip();

                 _container.addChild(mc);

                 _faceArr.push(mc);

                 mc.x = _vertexArr[i].x;

                 mc.y = _vertexArr[i].y;

                 mc.z = _vertexArr[i].z;

             }

         }

     }

 }