polyline转polygon AE（转）

 

转一个c#的线转面的程序

  private IPolygon PolylineToPolygon(IPolyline ipPline)

        {            try            {                ISegmentCollection ipSegColl;                IPolygon ipPolygon = new PolygonClass();                IGeometryCollection ipPolylineToPolygon = new PolygonClass();                IClone ipClone1, ipClone2;                ipClone1 = ipPline as IClone;                ipClone2 = ipClone1.Clone();                IGeometryCollection ipGeosPolyline = ipClone2 as IGeometryCollection;                int iCount = ipGeosPolyline.GeometryCount;                object before = Type.Missing;                object after = Type.Missing;                for (int i = 0; i < iCount; i++)                {                    IGeometry ipSRing;                    ipSegColl = new RingClass();                    ipSRing = ipGeosPolyline.get_Geometry(i);                    ipSegColl.AddSegmentCollection(ipSRing as ISegmentCollection);                    IRing ring = ipSegColl as IRing;                    IGeometry geo = ring;                    ipPolylineToPolygon.AddGeometry(geo, ref before, ref after);                    Marshal.ReleaseComObject(ipSRing);                    Marshal.ReleaseComObject(ring);                    Marshal.ReleaseComObject(geo);                }                ipPolygon = ipPolylineToPolygon as IPolygon;                ipPolygon.SimplifyPreserveFromTo();                //Marshal.ReleaseComObject(ipPolylineToPolygon);                Marshal.ReleaseComObject(ipClone1);                Marshal.ReleaseComObject(ipClone2);                Marshal.ReleaseComObject(ipGeosPolyline);                return ipPolygon;            }            catch (Exception ee)            {                MessageBoxEx.Show(ee.Message);                return null;            }        }