翼灵---致力于flash互动应用

现在PV3D处理旋转 实在是方便多了 还记得一年前 我还在AS2.0时代的时候做个这样旋转效果 忙乎了一下午
先放个以前AS2做过的套套3D

今非昔比啊，之前做的很复杂呢。不过现在PV3D里面的Quaternion我也搞不懂 知道怎么用能实现就好了。

1. package
2. {
3.     import caurina.transitions.Tweener;
4.     import flash.events.Event;
5.     import flash.filters.BlurFilter;
6.  
7.     import org.papervision3d.materials.MovieAssetMaterial;
8.     import org.papervision3d.core.math.Quaternion;
9.     import org.papervision3d.objects.DisplayObject3D;
10.     import org.papervision3d.objects.primitives.Plane;
11.     import org.papervision3d.core.effects.view.ReflectionView;
12.     import org.papervision3d.events.InteractiveScene3DEvent;
13.     public class PV3D_t005 extends ReflectionView
14.     {
15.         private var flag:Boolean;
16.         private var currentQuat:Quaternion = new Quaternion();
17.         private var targetQuat:Quaternion = new Quaternion();
18.         private var slerp:Number = 0;
19.         private const RADIUS:Number = 400;
20.         private const NUM_OF_PLANES:int = 9;
21.         private var carousel:DisplayObject3D = new DisplayObject3D();
22.         private var Material:MovieAssetMaterial=new MovieAssetMaterial("Photo1");
23.         public function PV3D_t005()
24.         {
25.             super(550,400,false,false);
26.             init();
27.             surfaceHeight = -120;
28.             this.addEventListener(Event.ENTER_FRAME,enterFrame);
29.         }
30.         private function init():void
31.         {
32.             for (var i:int = 0; i < NUM_OF_PLANES; i++) {
33.                 Material.interactive=true;
34.                 Material.allowAutoResize=true;
35.                 Material.doubleSided=true;
36.                 var plane:DisplayObject3D =new Plane(Material,100,100,4,4);
37.                 viewportReflection.filters = [new BlurFilter(3,3,3)];
38.                 //添加模糊滤镜后看起来会更逼真
39.                 viewport.interactive=true;
40.                 
41.                 plane.rotationY = 360 / NUM_OF_PLANES * i;
42.                 //以一定角度旋转每个平面，得到类似米字型
43.                 plane.moveForward(RADIUS);
44.                 //每个平面像各自前方平移上面定义的半径距离
45.                 //这两步就是组成一个环形的关键代码
46.                 
47.                 
48.             plane.addEventListener(InteractiveScene3DEvent.OBJECT_OVER, overHander);
49.             plane.addEventListener(InteractiveScene3DEvent.OBJECT_OUT, outHander);
50.             plane.addEventListener(InteractiveScene3DEvent.OBJECT_PRESS, pressHander);
51.                 carousel.addChild(plane);
52.                 //carousel相当于一个planeGroup,plane是多个的
53.             }
54.             camera.z=800;
55.             //这个一开始搞了我很久，我以为默认是1000，没想到继承ReflectionView的Z默认是-1000;
56.             scene.addChild(carousel);
57.         }
58.         private function overHander(e:InteractiveScene3DEvent):void
59.         {
60.             viewport.buttonMode=true;
61.         }
62.         private function outHander(e:InteractiveScene3DEvent):void
63.         {
64.             viewport.buttonMode=false;
65.         }
66.         private function pressHander(e:InteractiveScene3DEvent):void
67.         {
68.      var plane:DisplayObject3D=e.target as DisplayObject3D;
69.      var radians:Number = (carousel.rotationY -plane.rotationY) * Quaternion.DEGTORAD;
70.      //Quaternion.DEGTORAD是一个常数
71.      slerp = 0;
72.      currentQuat = Quaternion.createFromMatrix(carousel.transform);//复制一个3D矩阵
73.      targetQuat = Quaternion.createFromAxisAngle(0, 1, 0, radians);//x,y,z,度数
74.             
75.             //trace(plane.rotationY,Quaternion.DEGTORAD,radians)
76.  
77.         }
78.         private function enterFrame(e:Event):void
79.         {
80.             slerp += (1 - slerp) * .05;//只知道用来控制旋转速度的在0~1之间的一个变量
81.             var quat:Quaternion = Quaternion.slerp(currentQuat, targetQuat, slerp);
82.             //currentQuat和targetQuat返回的都是带有x y z w信息的东西，从初始到目标的运动
83.             carousel.transform = quat.matrix;
84.             //不断更新矩阵
85.             singleRender();
86.         }
87.     }
88. }

实例来自pv3d.org 想学好PV3D的朋友常去逛逛吧 会有收获的~