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UniqueCoordinateArrayFilter.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_UTIL_UNIQUECOORDINATEARRAYFILTER_H
17 #define GEOS_UTIL_UNIQUECOORDINATEARRAYFILTER_H
18
19 #include <geos/export.h>
20 #include <cassert>
21 #include <set>
22 #include <vector>
23
24 #include <geos/geom/CoordinateFilter.h>
25 #include <geos/geom/CoordinateSequence.h>
26 #include <geos/geom/Coordinate.h>
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 namespace geos {
34 namespace util { // geos::util
35
36 /*
37 * A CoordinateFilter that fills a vector of Coordinate const pointers.
38 * The set of coordinates contains no duplicate points.
39 *
40 * Last port: util/UniqueCoordinateArrayFilter.java rev. 1.17
41 */
42 class GEOS_DLL UniqueCoordinateArrayFilter: public geom::CoordinateFilter
43 {
44 public:
50 UniqueCoordinateArrayFilter(geom::Coordinate::ConstVect &target)
51 : pts(target)
52 {}
53
60 virtual ~UniqueCoordinateArrayFilter() {}
61
67 virtual void filter_ro(const geom::Coordinate *coord)
68 {
69 if ( uniqPts.insert(coord).second )
70 {
71 pts.push_back(coord);
72 }
73 }
74
75 private:
76 geom::Coordinate::ConstVect &pts; // target set reference
77 geom::Coordinate::ConstSet uniqPts; // unique points set
78
79 // Declare type as noncopyable
80 UniqueCoordinateArrayFilter(const UniqueCoordinateArrayFilter& other);
81 UniqueCoordinateArrayFilter& operator=(const UniqueCoordinateArrayFilter& rhs);
82 };
83
84 } // namespace geos::util
85 } // namespace geos
86
87 #ifdef _MSC_VER
88 #pragma warning(pop)
89 #endif
90
91 #endif // GEOS_UTIL_UNIQUECOORDINATEARRAYFILTER_H