package {
          import flash.display.Sprite;
          import flash.display.StageAlign;
          import flash.display.StageScaleMode;
          import flash.events.Event;
  
          public class @ax-animation-ch16-SpinningE extends Sprite
          {
                  private var points:Array;
                  private var numPoints:uint = 12;
                  private var fl:Number = 250;
                  private var vpX:Number = stage.stageWidth / 2;
                  private var vpY:Number = stage.stageHeight / 2;
                  
                  public function @ax-animation-ch16-SpinningE()
                  {
                          init();
                  }
                  
                  private function init():void
                  {
                          stage.align = StageAlign.TOP_LEFT;
                          stage.scaleMode = StageScaleMode.NO_SCALE;
                          
                          points = new Array();
                          points[0] =  new animation_ch16_Point3D(-150, -250, 100);
                          points[1] =  new animation_ch16_Point3D( 150, -250, 100);
                          points[2] =  new animation_ch16_Point3D( 150, -150, 100);
                          points[3] =  new animation_ch16_Point3D( -50, -150, 100);
                          points[4] =  new animation_ch16_Point3D( -50,  -50, 100);
                          points[5] =  new animation_ch16_Point3D(  50,  -50, 100);
                          points[6] =  new animation_ch16_Point3D(  50,   50, 100);
                          points[7] =  new animation_ch16_Point3D( -50,   50, 100);
                          points[8] =  new animation_ch16_Point3D( -50,  150, 100);
                          points[9] =  new animation_ch16_Point3D( 150,  150, 100);
                          points[10] = new animation_ch16_Point3D( 150,  250, 100);
                          points[11] = new animation_ch16_Point3D(-150,  250, 100);
                          for(var i:uint = 0; i < numPoints; i++)
                          {
                                  points[i].setVanishingPoint(vpX, vpY);
                                  points[i].setCenter(0, 0, 200);
                          }
                          addEventListener(Event.ENTER_FRAME, onEnterFrame);
                  }
                  
                  private function onEnterFrame(event:Event):void
                  {
                          var angleX:Number = (mouseY - vpY) * .001;
                          var angleY:Number = (mouseX - vpX) * .001;
                          for(var i:uint = 0; i < numPoints; i++)
                          {
                                  var point:animation_ch16_Point3D = points[i];
                                  point.rotateX(angleX);
                                  point.rotateY(angleY);
                          }
                          
                          graphics.clear();
                          graphics.lineStyle(0);
                          graphics.moveTo(points[0].screenX, points[0].screenY);
                          for(i = 1; i < numPoints; i++)
                          {
                                  graphics.lineTo(points[i].screenX, points[i].screenY);
                          }
                          graphics.lineTo(points[0].screenX, points[0].screenY);
                  }
          }
  }