Arcgis Engnie 汽车沿线路行走

最新推荐文章于 2024-11-30 12:18:48 发布

转载最新推荐文章于 2024-11-30 12:18:48 发布 · 1.2k 阅读

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本文介绍了一种使用3DS文件模拟汽车沿Polyline路径行驶的方法。通过读取特征图层和Polyline几何对象，实现汽车位置更新及摄像机视角变化。

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汽车沿着pollyline行驶

ILayer layer = axSceneControl1.SceneGraph.Scene.get_Layer(5);
         IFeatureLayer featurelayer = (IFeatureLayer)layer;
         IFeatureClass featureclass = featurelayer.FeatureClass;
         IFeature feature = featureclass.GetFeature(0);
         IPolyline polyline = (IPolyline )feature.Shape;
         double d = polyline.Length;
         IPoint point1 = new PointClass();
         IPoint point2 = new PointClass();
         for (int i = 2; i <= (int)d;i++ )
         {
            polyline.QueryPoint(esriSegmentExtension.esriNoExtension, i, false, point1);
            polyline.QueryPoint(esriSegmentExtension.esriExtendAtFrom , i-150, false, point2);
            point2 .Z =13;
            point2.X= point2.X +-50;
            ICamera camera = axSceneControl1.SceneViewer.Camera;
            IPoint point3=new PointClass ();
            point3.X = point1.X;
            point3.Y = point1.Y;
            point3.Z =13;
            camera.Target = point3;
            camera.Observer = point2;
            IScene pscene = axSceneControl1.SceneGraph.Scene;
            IMarker3DSymbol pmark3dsymbol = new Marker3DSymbolClass();
            pmark3dsymbol.CreateFromFile("E:\\3dmax\\汽车.3DS");
            IMarkerSymbol marksy = (IMarkerSymbol)pmark3dsymbol;
            marksy.Size = 20;
            marksy.Angle = 90;
            IElement pelement = new MarkerElementClass();
            IMarkerElement pmarkelement = (IMarkerElement)pelement;
            pmarkelement.Symbol = (IMarkerSymbol)marksy;
            pelement.Geometry = point1;
            IGraphicsLayer player = axSceneControl1.SceneGraph.Scene.BasicGraphicsLayer;
            IGraphicsContainer3D pgraphiccontainer3d = (IGraphicsContainer3D)player;
            pgraphiccontainer3d.DeleteAllElements();
            pgraphiccontainer3d.AddElement((IElement)pmarkelement);
            axSceneControl1.SceneGraph.RefreshViewers();
         }
用3DS文件填充点,移动点,使汽车行驶,并改变camera.