[ActionScript 3.0] Away3D 天空盒（skybox）例子2

  1 package
  2 {
  3     import away3d.cameras.Camera3D;
  4     import away3d.cameras.lenses.PerspectiveLens;
  5     import away3d.containers.Scene3D;
  6     import away3d.containers.View3D;
  7     import away3d.controllers.HoverController;
  8     import away3d.primitives.SkyBox;
  9     import away3d.textures.BitmapCubeTexture;
 10     import away3d.utils.Cast;
 11     
 12     import flash.display.Sprite;
 13     import flash.display.StageAlign;
 14     import flash.display.StageScaleMode;
 15     import flash.events.Event;
 16     import flash.events.KeyboardEvent;
 17     import flash.events.MouseEvent;
 18     import flash.ui.Keyboard;
 19     
 20     /**
 21      * @author Frost.Yen
 22      * @E-mail 871979853@qq.com
 23      * @create 2015-9-28 上午10:26:21
 24      *
 25      */
 26     public class Away3dSkybox extends Sprite
 27     {
 28         //skybox
 29         [Embed(source="assets/snow_positive_x.jpg")]
 30         private var EnvPosX:Class;
 31         [Embed(source="assets/snow_positive_y.jpg")]
 32         private var EnvPosY:Class;
 33         [Embed(source="assets/snow_positive_z.jpg")]
 34         private var EnvPosZ:Class;
 35         [Embed(source="assets/snow_negative_x.jpg")]
 36         private var EnvNegX:Class;
 37         [Embed(source="assets/snow_negative_y.jpg")]
 38         private var EnvNegY:Class;
 39         [Embed(source="assets/snow_negative_z.jpg")]
 40         private var EnvNegZ:Class;
 41         
 42         private var view:View3D;
 43         private var scene:Scene3D;
 44         private var camera:Camera3D;
 45         private var cameraController:HoverController;
 46         private var cubeTexture:BitmapCubeTexture;
 47         private var move:Boolean = false;
 48         private var lastPanAngle:Number;
 49         private var lastTiltAngle:Number;
 50         private var lastMouseX:Number;
 51         private var lastMouseY:Number;
 52         private var tiltSpeed:Number = 2;
 53         private var panSpeed:Number = 2;
 54         private var distanceSpeed:Number = 1000;
 55         private var tiltIncrement:Number = 0;
 56         private var panIncrement:Number = 0;
 57         private var distanceIncrement:Number = 0;
 58         public function Away3dSkybox()
 59         {
 60             initEngine();
 61             initMaterials();
 62             initObjects();
 63             initListeners();
 64         }
 65         /**
 66          * Initialise the engine
 67          */
 68         private function initEngine():void
 69         {
 70             stage.scaleMode = StageScaleMode.NO_SCALE;
 71             stage.align = StageAlign.TOP_LEFT;
 72             
 73             view = new View3D();
 74             scene = view.scene;
 75             camera = view.camera;
 76             //camera.lens.far = 1000000;
 77             view.camera.lens = new PerspectiveLens(90);
 78             //setup controller to be used on the camera
 79             cameraController = new HoverController(camera, null, 0, 10, 25000, 0, 70);
 80             
 81             view.addSourceURL("srcview/index.html");
 82             addChild(view);
 83         }
 84         private function initMaterials():void
 85         {
 86             //create skybox texture
 87             cubeTexture = new BitmapCubeTexture(Cast.bitmapData(EnvPosX), Cast.bitmapData(EnvNegX), Cast.bitmapData(EnvPosY), Cast.bitmapData(EnvNegY), Cast.bitmapData(EnvPosZ), Cast.bitmapData(EnvNegZ));
 88         }
 89         /**
 90          * Initialise the scene objects
 91          */
 92         private function initObjects():void
 93         {        
 94             //create skybox.
 95             scene.addChild(new SkyBox(cubeTexture));
 96         }
 97         /**
 98          * Initialise the listeners
 99          */
100         private function initListeners():void
101         {
102             
103             addEventListener(Event.ENTER_FRAME, onEnterFrame);
104             view.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
105             view.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);
106             stage.addEventListener(Event.RESIZE, onResize);
107             stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
108             stage.addEventListener(KeyboardEvent.KEY_UP, onKeyUp);
109             onResize();
110         }
111         /**
112          * Navigation and render loop
113          */
114         private function onEnterFrame(event:Event):void
115         {
116             if (move) {
117                 cameraController.panAngle = 0.3*(stage.mouseX - lastMouseX) + lastPanAngle;
118                 cameraController.tiltAngle = 0.3*(stage.mouseY - lastMouseY) + lastTiltAngle;
119             }
120             
121             cameraController.panAngle += panIncrement;
122             cameraController.tiltAngle += tiltIncrement;
123             cameraController.distance += distanceIncrement;
124             
125             view.render();
126         }
127         
128         /**
129          * Key down listener for camera control
130          */
131         private function onKeyDown(event:KeyboardEvent):void
132         {
133             switch (event.keyCode) {
134                 case Keyboard.UP:
135                 case Keyboard.W:
136                     tiltIncrement = tiltSpeed;
137                     break;
138                 case Keyboard.DOWN:
139                 case Keyboard.S:
140                     tiltIncrement = -tiltSpeed;
141                     break;
142                 case Keyboard.LEFT:
143                 case Keyboard.A:
144                     panIncrement = panSpeed;
145                     break;
146                 case Keyboard.RIGHT:
147                 case Keyboard.D:
148                     panIncrement = -panSpeed;
149                     break;
150                 case Keyboard.Z:
151                     distanceIncrement = distanceSpeed;
152                     break;
153                 case Keyboard.X:
154                     distanceIncrement = -distanceSpeed;
155                     break;
156             }
157         }
158         
159         /**
160          * Key up listener for camera control
161          */
162         private function onKeyUp(event:KeyboardEvent):void
163         {
164             switch (event.keyCode) {
165                 case Keyboard.UP:
166                 case Keyboard.W:
167                 case Keyboard.DOWN:
168                 case Keyboard.S:
169                     tiltIncrement = 0;
170                     break;
171                 case Keyboard.LEFT:
172                 case Keyboard.A:
173                 case Keyboard.RIGHT:
174                 case Keyboard.D:
175                     panIncrement = 0;
176                     break;
177                 case Keyboard.Z:
178                 case Keyboard.X:
179                     distanceIncrement = 0;
180                     break;
181             }
182         }
183         
184         /**
185          * Mouse down listener for navigation
186          */
187         private function onMouseDown(event:MouseEvent):void
188         {
189             move = true;
190             lastPanAngle = cameraController.panAngle;
191             lastTiltAngle = cameraController.tiltAngle;
192             lastMouseX = stage.mouseX;
193             lastMouseY = stage.mouseY;
194             stage.addEventListener(Event.MOUSE_LEAVE, onStageMouseLeave);
195         }
196         
197         /**
198          * Mouse up listener for navigation
199          */
200         private function onMouseUp(event:MouseEvent):void
201         {
202             move = false;
203             stage.removeEventListener(Event.MOUSE_LEAVE, onStageMouseLeave);
204         }
205         
206         /**
207          * Mouse stage leave listener for navigation
208          */
209         private function onStageMouseLeave(event:Event):void
210         {
211             move = false;
212             stage.removeEventListener(Event.MOUSE_LEAVE, onStageMouseLeave);
213         }
214         
215         /**
216          * stage listener for resize events
217          */
218         private function onResize(event:Event = null):void
219         {
220             view.width = stage.stageWidth;
221             view.height = stage.stageHeight;
222         }
223     }
224 }