Away3D线条的绘制的例子

1，使用LineSegment创建线段

（1）可以设置线条的开始坐标，结束坐标，起始颜色，结束颜色，线条粗细等

（2）将创建好的一系列线条添加到SegmentSet，最后将SegmentSet添加到View3D里。

2，效果图如下：

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;
        }
    }
}