GEOS  3.6.1
SimpleNestedRingTester.h
1 /**********************************************************************
2  *
3  * GEOS - Geometry Engine Open Source
4  * http://geos.osgeo.org
5  *
6  * Copyright (C) 2005-2006 Refractions Research Inc.
7  * Copyright (C) 2001-2002 Vivid Solutions 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  * Last port: operation/valid/SimpleNestedRingTester.java rev. 1.14 (JTS-1.10)
17  *
18  **********************************************************************/
19 
20 #ifndef GEOS_OP_SIMPLENESTEDRINGTESTER_H
21 #define GEOS_OP_SIMPLENESTEDRINGTESTER_H
22 
23 #include <geos/export.h>
24 
25 #include <cstddef>
26 #include <vector>
27 
28 #ifdef _MSC_VER
29 #pragma warning(push)
30 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
31 #endif
32 
33 // Forward declarations
34 namespace geos {
35  namespace geom {
36  class Coordinate;
37  class LinearRing;
38  }
39  namespace geomgraph {
40  class GeometryGraph;
41  }
42 }
43 
44 namespace geos {
45 namespace operation { // geos::operation
46 namespace valid { // geos::operation::valid
47 
54 class GEOS_DLL SimpleNestedRingTester {
55 private:
56  geomgraph::GeometryGraph *graph; // used to find non-node vertices
57  std::vector<geom::LinearRing*> rings;
58  geom::Coordinate *nestedPt;
59 public:
61  :
62  graph(newGraph),
63  rings(),
64  nestedPt(NULL)
65  {}
66 
68  }
69 
70  void add(geom::LinearRing *ring) {
71  rings.push_back(ring);
72  }
73 
74  /*
75  * Be aware that the returned Coordinate (if != NULL)
76  * will point to storage owned by one of the LinearRing
77  * previously added. If you destroy them, this
78  * will point to an invalid memory address.
79  */
80  geom::Coordinate *getNestedPoint() {
81  return nestedPt;
82  }
83 
84  bool isNonNested();
85 };
86 
87 } // namespace geos.operation.valid
88 } // namespace geos.operation
89 } // namespace geos
90 
91 #ifdef _MSC_VER
92 #pragma warning(pop)
93 #endif
94 
95 #endif // GEOS_OP_SIMPLENESTEDRINGTESTER_H
Coordinate is the lightweight class used to store coordinates.
Definition: Coordinate.h:60
Definition: GeometryGraph.h:73
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25
Models an OGC SFS LinearRing.
Definition: LinearRing.h:57
Tests whether any of a set of LinearRings are nested inside another ring in the set, using a simple O(n^2) comparison.
Definition: SimpleNestedRingTester.h:54