Away3D - 使用PlaneGeometry添加地面(平台平面)
作者:hangge | 2015-11-25 09:00
对于没有厚度的地面,可以使用 PlaneGeometry 来实现。
(2)设置 PlaneGeometry 的 geometry.scaleUV 属性
![](http://hangge.com/blog_uploads/201511/2015110611161343539.jpg)
![](http://hangge.com/blog_uploads/201511/2015110611162693160.png)
1,由于地面由一块块地砖组,要实现地面贴图的平铺
(1)TextureMaterial 的 repeat 属性设为 true(2)设置 PlaneGeometry 的 geometry.scaleUV 属性
地板贴图:
![](http://hangge.com/blog_uploads/201511/2015110611161343539.jpg)
scaleUV(2, 2)后的效果:
![](http://hangge.com/blog_uploads/201511/2015110611162693160.png)
2,设置双面贴图
默认地面只贴上面的贴图,要两面都贴的话将 PlaneGeometry 的 doubleSided 属性设置为 true 即可。
3,代码如下:
package{ import flash.display.Sprite; import flash.display.StageAlign; import flash.display.StageScaleMode; import flash.events.Event; import flash.events.MouseEvent; import away3d.containers.View3D; import away3d.controllers.HoverController; import away3d.entities.Mesh; import away3d.materials.TextureMaterial; import away3d.primitives.PlaneGeometry; import away3d.utils.Cast; [SWF(frameRate="60", backgroundColor="#FFFFFF")] public class S2 extends Sprite { private var _view3D:View3D; private var cameraController:HoverController;//360全景展示相机控制器 [Embed(source="assets/floor_diffuse.jpg")] public static var FloorDiffuse:Class; private var planeMaterial:TextureMaterial; private var _lastX:Number = 0; private var _lastY:Number = 0; public function S2() { initEngine(); initMaterials(); initObjects(); initListeners(); } /** * 初始化引擎 */ private function initEngine():void { stage.scaleMode = StageScaleMode.NO_SCALE; stage.align = StageAlign.TOP_LEFT; // 创建一个视口 _view3D = new View3D(); _view3D.antiAlias = 4; //设置抗锯齿级别 //初始化摄像头 cameraController = new HoverController(_view3D.camera); /*cameraController.distance = 1000; cameraController.minTiltAngle = 0; cameraController.maxTiltAngle = 90; cameraController.panAngle = 45;*/ cameraController.tiltAngle = 30; addChild(_view3D); } /** * 初始化材质 */ private function initMaterials():void { planeMaterial = new TextureMaterial(Cast.bitmapTexture(FloorDiffuse)); planeMaterial.repeat = true; } /** * 初始化物体 */ private function initObjects():void { var plane:Mesh = new Mesh(new PlaneGeometry(600, 600), planeMaterial); plane.geometry.scaleUV(2, 2); (plane.geometry as PlaneGeometry).doubleSided = true; //双面 贴图 plane.y = -20; _view3D.scene.addChild(plane); } /** * 初始化监听 */ private function initListeners():void { addEventListener(Event.ENTER_FRAME, _onEnterFrame); //鼠标事件监听 stage.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown); stage.addEventListener(MouseEvent.MOUSE_UP, onMouseUp); stage.addEventListener(MouseEvent.MOUSE_WHEEL,onWheel); stage.addEventListener(Event.RESIZE, onResize); onResize(); } /** * 渲染视图 */ private function _onEnterFrame(e:Event):void { //渲染视图 _view3D.render(); } /** * 使用舞台大小一直全屏 */ private function onResize(event:Event = null):void { _view3D.width = stage.stageWidth; _view3D.height = stage.stageHeight; } /** * 鼠标滚轮事件 */ private function onWheel(e:MouseEvent):void { if(e.delta > 0){ if(cameraController.distance < 1000) cameraController.distance += 100; }else{ if(cameraController.distance > 600) cameraController.distance -= 100; } } /** * 鼠标按下事件 */ private function onMouseDown(event:MouseEvent):void { _view3D.stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseMoveHandler); _lastX = _view3D.mouseX; _lastY = _view3D.mouseY; } /** * 鼠标弹起事件 */ private function onMouseUp(event:MouseEvent):void { _view3D.stage.removeEventListener(MouseEvent.MOUSE_MOVE, mouseMoveHandler); } /** * 鼠标移动事件 */ private function mouseMoveHandler(event:MouseEvent):void { //移动摄像机 var dx:Number = _view3D.mouseX - _lastX; var dy:Number = _view3D.mouseY - _lastY; cameraController.panAngle += dx; cameraController.tiltAngle += dy; _lastX = _view3D.mouseX; _lastY = _view3D.mouseY; } } }
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