所谓skybox就是六个面即六张图能够无缝的拼成一个正方体的盒子。
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 [email protected]
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 }
时间： 2024-10-15 08:49:43