C#操作Styline二次開發實現畫線功能

c#操作styline模型左鍵點擊模型擷取座標，完成畫線操作。

1：滑鼠點擊模型事件

 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;        }　

2：操作畫線

  string tMsg = String.Empty;            ILinearRing cRing = null;            IGeometry cPolygonGeometry = null;            ITerrainPolyline66 cpolyo = null;            //建立執行個體            //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];            //擷取座標值            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; //顏色樣式                AltitudeTypeCode AltitudeType = AltitudeTypeCode.ATC_ON_TERRAIN;                // D2. Create polygon                cpolyo = sgworld.Creator.CreatePolyline(cPolygonGeometry, nLineColor, AltitudeType, string.Empty, "Polygon");                ///注意座標                sgworld.Window.PixelToWorld(sgworld.Window.Rect.Left, sgworld.Window.Rect.Top, WorldPointType.WPT_TERRAIN);            }