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(0, 0, 1000000, SpatialReferences.Wgs84);
            var sym = new SimpleMarkerSceneSymbol(SimpleMarkerSceneSymbolStyle.Sphere, Colors.Yellow, 100000, 100000, 100000, SceneSymbolAnchorPosition.Center);
            var g = new Graphic(ptn, sym);
            glyr.Graphics.Add(g);
            Timer timer = new Timer(1000);
            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+1, 0, 1000000, 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