/// <summary>
/// 将线要素切割
/// </summary>
/// <param name="pFeature">被切割的线要素</param>
/// <param name="pPoint">切割点</param>
/// <returns>切割后的线要素</returns>
public static IFeature SplitPolyLine(IFeature pFeature, IPoint pPoint)
{
IGeometry pGeometry = pFeature.Shape;
if (((IPolyline)pGeometry).FromPoint.X == pPoint.X && ((IPolyline)pGeometry).FromPoint.Y == pPoint.Y)
{
return(pFeature);
}
if (((IPolyline)pGeometry).ToPoint.X == pPoint.X && ((IPolyline)pGeometry).ToPoint.Y == pPoint.Y)
{
return(pFeature);
}
try
{
IWorkspaceEdit pEditor = GeoDbUtils.InitWorkspace() as IWorkspaceEdit;
pEditor.StartEditOperation();
IFeatureEdit pEditFeature = pFeature as IFeatureEdit;
ISet pSet = pEditFeature.Split(pPoint);
pSet.Reset();
IFeature pRetFeature = pSet.Next() as IFeature;
pGeometry = pRetFeature.Shape;
if (((IPointCollection)(IPolyline)pGeometry).PointCount == 2)
{
pRetFeature = pSet.Next() as IFeature;
}
pEditor.StopEditOperation();
return(pRetFeature);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return(null);
}
}
