C#操作Styline二次开发实现画线功能

List<IPosition66> pos = new List<IPosition66>();

       private bool Sgworld_OnLButtonClicked(int Flags, int X, int Y)

       {

           var sgworld = new SGWorld66();

           var postioninfo = sgworld.Window.PixelToWorld(X, Y);

           IPosition66 ss = postioninfo.Position;

           ss.X = postioninfo.Position.X;

           ss.Y = postioninfo.Position.Y;

           pos.Add(ss);

           return false;

       }　

string tMsg = String.Empty;

          ILinearRing cRing = null;

          IGeometry cPolygonGeometry = null;

          ITerrainPolyline66 cpolyo = null;

          //创建实例

          //MessageBox.Show(String.Format("X:{0}\r\nY:{1}", posl[i].PosX, posl[i].PosX));

          var sgworld = new SGWorld66();

          List<IPosition66> posl = pos;

          int sin = 0;

          sin = posl.Count*3;

          double[] cVerticesArray = new double[sin];

          //获取坐标值

          for (int i = 0; i < posl.Count; i++)

          {

              cVerticesArray[i*3] = posl[i].X;

              cVerticesArray[i*3+1] = posl[i].Y;

              cVerticesArray[i * 3 + 2] = posl[i].Altitude;

          }

          {

              cRing = sgworld.Creator.GeometryCreator.CreateLinearRingGeometry(cVerticesArray);

              cPolygonGeometry = sgworld.Creator.GeometryCreator.CreateLinearRingGeometry(cRing);

          }

          {

              uint nLineColor = 0xFF00FF00; //颜色样式

              AltitudeTypeCode AltitudeType = AltitudeTypeCode.ATC_ON_TERRAIN;

              // D2. Create polygon

              cpolyo = sgworld.Creator.CreatePolyline(cPolygonGeometry, nLineColor, AltitudeType, string.Empty, "Polygon");

              ///注意坐标

              sgworld.Window.PixelToWorld(sgworld.Window.Rect.Left, sgworld.Window.Rect.Top, WorldPointType.WPT_TERRAIN);

          }