arcgis两点之间连线_Engine中如何截取线上指定两点间的线段?
//调用IPolyline newLine = GetSubCurve(polyline, p1, p2);ESRI.ArcGIS.Display.IScreenDisplay screenDisplay = axMapControl1.ActiveView.ScreenDisplay;screenDisplay.StartDrawing(screenDisplay.hDC, System.Con...