移动目标在三维GIS中的实现方法

对于基于ArcGIS Runtime的应用程序，其实现方法比较简单，可以直接更新图形的Geometry属性，即可实现位置的移动：

         private void AddGraphics()
         {
             var glyr = new GraphicsOverlay();
             glyr.SceneProperties.SurfacePlacement = SurfacePlacement.Absolute;
             map1.GraphicsOverlays.Add(glyr);

             var ptn = new MapPoint(, , , SpatialReferences.Wgs84);
             var sym = new SimpleMarkerSceneSymbol(SimpleMarkerSceneSymbolStyle.Sphere, Colors.Yellow, , , , SceneSymbolAnchorPosition.Center);
             var g = new Graphic(ptn, sym);
             glyr.Graphics.Add(g);
             Timer timer = new Timer();
             timer.Elapsed += async (sender, e) => await Task.Run(()=> { UpdateGraphics(g); });
             timer.Start();
         }

         private void UpdateGraphics(Graphic g)
         {
             var old_ptn = g.Geometry as MapPoint;
             var new_ptn = new MapPoint(old_ptn.X+, , , SpatialReferences.Wgs84);
             g.Geometry = new_ptn;
         }

对于基于ArcGIS JavaScript API的Web应用，则需要通过external-renderer来进行实现动画渲染。

具体可以参加以下示例：https://developers.arcgis.com/javascript/latest/sample-code/sandbox/index.html?sample=scene-external-renderer