对于没有厚度的地面,可以使用 PlaneGeometry 来实现。
(1)TextureMaterial 的 repeat 属性设为 true
(2)设置 PlaneGeometry 的 geometry.scaleUV 属性
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。
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 lastPanAngle:Number;
private var lastTiltAngle:Number;
private var lastMouseX:Number;
private var lastMouseY:Number;
private var move:Boolean;
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
{
//移动视角
if (move) {
cameraController.panAngle = 0.3 * (stage.mouseX - lastMouseX) + lastPanAngle;
cameraController.tiltAngle = 0.3 * (stage.mouseY - lastMouseY) + lastTiltAngle;
}
//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
{
lastPanAngle = cameraController.panAngle;
lastTiltAngle = cameraController.tiltAngle;
lastMouseX = stage.mouseX;
lastMouseY = stage.mouseY;
move = true;
}
/**
* 鼠标弹起事件
*/
private function onMouseUp(event:MouseEvent):void
{
move = false;
}
}
}