Away3D线条的绘制的例子

1，使用LineSegment创建线段

代码如下所示

package{
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.geom.Vector3D;

import away3d.containers.View3D;
import away3d.controllers.HoverController;
import away3d.entities.Mesh;
import away3d.entities.SegmentSet;
import away3d.materials.TextureMaterial;
import away3d.primitives.CubeGeometry;
import away3d.primitives.LineSegment;
import away3d.utils.Cast;

[SWF(frameRate="60", backgroundColor="#FFFFFF")]
public class S3 extends Sprite {

private var _view3D:View3D;
private var cameraController:HoverController;//360全景展示相机控制器

//地板图片（用作地板的纹理 ）
[Embed(source="assets/road.jpg")]
private var floorClass:Class;

//地板材质
private var floorMaterial:TextureMaterial;

private var lastPanAngle:Number;
private var lastTiltAngle:Number;
private var lastMouseX:Number;
private var lastMouseY:Number;
private var move:Boolean;

public function S3() {
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 = 15;

addChild(_view3D);
}

/**
* 初始化材质
*/
private function initMaterials():void
{
//地板的纹理
floorMaterial = new TextureMaterial(Cast.bitmapTexture(floorClass));
}

/**
* 初始化物体
*/
private function initObjects():void
{
// 在三维舞台中创建一个方块（地板 ）
var cube1:Mesh = new Mesh(new CubeGeometry(700, 20, 500), floorMaterial);
_view3D.scene.addChild(cube1);

//创建线条
var linesContainer:SegmentSet = new SegmentSet();
//线的两端点，粗细，起始端颜色，结束端颜色
var line:LineSegment = new LineSegment(new Vector3D(0,0,0),new Vector3D(200,200,200),
0xFF0000,0x00FF00,1);
linesContainer.addSegment(line);
_view3D.scene.addChild(linesContainer);
}

/**
* 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;
}
}
}