GEOS  3.8.0dev
PolygonExtracter.h
1 /**********************************************************************
2  *
3  * GEOS - Geometry Engine Open Source
4  * http://geos.osgeo.org
5  *
6  * Copyright (C) 2001-2002 Vivid Solutions Inc.
7  * Copyright (C) 2006 Refractions Research Inc.
8  *
9  * This is free software; you can redistribute and/or modify it under
10  * the terms of the GNU Lesser General Public Licence as published
11  * by the Free Software Foundation.
12  * See the COPYING file for more information.
13  *
14  **********************************************************************/
15 
16 #ifndef GEOS_GEOM_UTIL_POLYGONEXTRACTER_H
17 #define GEOS_GEOM_UTIL_POLYGONEXTRACTER_H
18 
19 #include <geos/export.h>
20 #include <geos/geom/GeometryFilter.h>
21 #include <geos/geom/Polygon.h>
22 #include <vector>
23 
24 namespace geos {
25 namespace geom { // geos.geom
26 namespace util { // geos.geom.util
27 
31 class GEOS_DLL PolygonExtracter: public GeometryFilter {
32 
33 public:
34 
42  static void getPolygons(const Geometry& geom, std::vector<const Polygon*>& ret);
43 
48  PolygonExtracter(std::vector<const Polygon*>& newComps);
49 
50  void filter_rw(Geometry* geom) override;
51 
52  void filter_ro(const Geometry* geom) override;
53 
54 private:
55 
57  std::vector<const Polygon*>& comps;
58 
59  // Declare type as noncopyable
60  PolygonExtracter(const PolygonExtracter& other) = delete;
61  PolygonExtracter& operator=(const PolygonExtracter& rhs) = delete;
62 };
63 
64 } // namespace geos.geom.util
65 } // namespace geos.geom
66 } // namespace geos
67 
68 #endif
Geometry classes support the concept of applying a Geometry filter to the Geometry.
Definition: GeometryFilter.h:47
Definition: PolygonExtracter.h:31
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition: Geometry.h:187
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25