ArcEngine 3D开发之3D符号化——添加3D符号

前面的博文http://blog.csdn.net/giser_whu/article/details/23047213介绍了3D符号化的主要接口。在这里总结下在座的过程中实现3D符号化的两种方式，第一种是将3ds文件作为符号，对点图层进行唯一值渲染，可以设置符号的大小，转角等属性；第二种则是借助GraphicsLayer添加到Globe显示，也可以对符号进行旋转等操作，两种方式的效率如何，还未做大范围的数据进行比较，待做了之后再对两种方式做一个比较。

本片博文主要是采用第二种方式显示3D符号，代码如下：

  private void button_Add3DSymbol_Click (object sender,EventArgs e)
        {
            //首先添加一个GlobeGraphicLayer
            addGraphicLayer();
            //创建3D图形
            string filePath=@"D:毕业设计TowerModelTower_ZMP2_51.3ds";
            IImport3DFile import3Dfile = new Import3DFileClass();
            import3Dfile.CreateFromFile(filePath);

            IGeometry geometry = import3Dfile.Geometry;
            IMarker3DSymbol marker3DSymbol = new Marker3DSymbolClass();
            marker3DSymbol.Shape = geometry;

            //设置符号的颜色大小等属性
            OtherHelper otherHelper=new OtherHelper();
            (marker3DSymbol as IMarkerSymbol).Color = otherHelper.CreateNewColor(143,156,234);
            IEnvelope pEnv = geometry.Envelope;
            (marker3DSymbol as IMarkerSymbol).Size = pEnv.Depth;
            
            //将3D符号作为element的符号显示
            IElement element = new MarkerElementClass();
            IPoint point = new PointClass();
            point.PutCoords(114.359676,30.534487);
            element.Geometry = point;
            IMarkerElement markerElement = element as IMarkerElement;
            markerElement.Symbol = marker3DSymbol as IMarkerSymbol;

            graphicsLayer.AddElement(element,1);

         

        }
        public void addGraphicLayer ()
        {
            graphicsLayer = new GlobeGraphicsLayerClass();
            ILayer pLayer = graphicsLayer as ILayer;
            pLayer.Name = "CameraPathGraphicsLayer";
            m_globeControl.Globe.AddLayerType(pLayer,esriGlobeLayerType.esriGlobeLayerTypeDraped,true);
           
            //设置为活动图层
            m_globeControl.Globe.GlobeDisplay.Scene.ActiveGraphicsLayer = pLayer;
        }