1 /***************************************************************************
2                          qgscurvepolygon.cpp
3                          ---------------------
4     begin                : August 2017
5     copyright            : (C) 2017 by Martí Angelats i Ribera
6     email                : marti dot angelats at psig dot cat
7  ***************************************************************************/
8 
9 /***************************************************************************
10  *                                                                         *
11  *   This program is free software; you can redistribute it and/or modify  *
12  *   it under the terms of the GNU General Public License as published by  *
13  *   the Free Software Foundation; either version 2 of the License, or     *
14  *   (at your option) any later version.                                   *
15  *                                                                         *
16  ***************************************************************************/
17 
18 #include "qgssurface.h"
19 #include "qgspoint.h"
20 #include "qgspolygon.h"
21 #include "qgsgeos.h"
22 #include <memory>
23 
isValid(QString & error,Qgis::GeometryValidityFlags flags) const24 bool QgsSurface::isValid( QString &error, Qgis::GeometryValidityFlags flags ) const
25 {
26   if ( flags == 0 && mHasCachedValidity )
27   {
28     // use cached validity results
29     error = mValidityFailureReason;
30     return error.isEmpty();
31   }
32 
33   const QgsGeos geos( this );
34   const bool res = geos.isValid( &error, flags & Qgis::GeometryValidityFlag::AllowSelfTouchingHoles, nullptr );
35   if ( flags == 0 )
36   {
37     mValidityFailureReason = !res ? error : QString();
38     mHasCachedValidity = true;
39   }
40   return res;
41 }
42 
clearCache() const43 void QgsSurface::clearCache() const
44 {
45   mBoundingBox = QgsRectangle();
46   mHasCachedValidity = false;
47   mValidityFailureReason.clear();
48   QgsAbstractGeometry::clearCache();
49 }
50