奇葩图！按acSelectionSetWindowPolygon在地块范围PL线内选不到实体！什么原因！？

Real_King

奇葩图！按acSelectionSetWindowPolygon在地块范围PL线内选不到实体！什么原因！？
代码和图都付上，请大神指教！  
  Autodesk.AutoCAD.Interop.AcadApplication AcadApp;
          Autodesk.AutoCAD.Interop.AcadDocument AcadDoc;
          AcadApp = (AcadApplication)System.Runtime.InteropServices.Marshal.GetActiveObject("AutoCAD.Application");
          AcadDoc = AcadApp.ActiveDocument;
        handle01:
          Microsoft.VisualBasic.Interaction.AppActivate(AcadApp.Caption);
          object returnObj, pickPoint;
          string pickPrompt = "选取Polyline对象!";
          AcadDoc.Utility.GetEntity(out returnObj, out pickPoint, pickPrompt);
          AcadObject returnCADObj = (AcadObject)returnObj;
          if (returnCADObj.ObjectName != "AcDbPolyline") goto handle01;
          AcadLWPolyline returnLWPolyline = (AcadLWPolyline)returnCADObj;
          if (!returnLWPolyline.Closed)
          {
            MessageBox.Show("选取的多段线没有闭合！");
            goto handle01;
          }
          Double[] selectionEdgePoints, LWPolylineCoords;
          LWPolylineCoords = (Double[])returnLWPolyline.Coordinates;
          int i;
          selectionEdgePoints = new Double[3 * LWPolylineCoords.Length / 2];
          for (i = 0; i < LWPolylineCoords.Length / 2; i++)
          {
            selectionEdgePoints[3 * i] = LWPolylineCoords[2 * i];
            selectionEdgePoints[3 * i + 1] = LWPolylineCoords[2 * i + 1];
            selectionEdgePoints[3 * i + 2] = 0;
          }
          AcadSelectionSet mySelectionSet;
          mySelectionSet = AcadDoc.SelectionSets.Add("NewSelectionSet06");
          Int16[] FilterType = new Int16[1];
          object[] FilterData = new object[1];
          FilterType[0] = 0;
          FilterData[0] = "*";
          mySelectionSet.SelectByPolygon(AcSelect.acSelectionSetWindowPolygon, selectionEdgePoints,
          FilterType, FilterData);
          MessageBox.Show("范围内图形对象个数为：" + mySelectionSet.Count.ToString());
          AcadDoc.SelectionSets.Item("NewSelectionSet06").Delete();


居然选不到实体！

雪山飞狐_lzh

右边那条线应该是重线

Real_King

雪山飞狐_lzh 发表于 2015-4-1 18:09
右边那条线应该是重线

找到了原因，重复点的缘故