GEOS
3.3.7
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00001 /********************************************************************** 00002 * $Id: OffsetPointGenerator.h 3255 2011-03-01 17:56:10Z mloskot $ 00003 * 00004 * GEOS - Geometry Engine Open Source 00005 * http://geos.refractions.net 00006 * 00007 * Copyright (C) 2006 Refractions Research Inc. 00008 * 00009 * This is free software; you can redistribute and/or modify it under 00010 * the terms of the GNU Lesser General Public Licence as published 00011 * by the Free Software Foundation. 00012 * See the COPYING file for more information. 00013 * 00014 *********************************************************************** 00015 * 00016 * Last port: operation/overlay/validate/OffsetPointGenerator.java rev. 1.1 (JTS-1.10) 00017 * 00018 **********************************************************************/ 00019 00020 #ifndef GEOS_OP_OVERLAY_OFFSETPOINTGENERATOR_H 00021 #define GEOS_OP_OVERLAY_OFFSETPOINTGENERATOR_H 00022 00023 #include <geos/export.h> 00024 #include <geos/algorithm/PointLocator.h> // for composition 00025 #include <geos/geom/Geometry.h> // for auto_ptr visibility of dtor 00026 #include <geos/geom/MultiPoint.h> // for auto_ptr visibility of dtor 00027 #include <geos/geom/Coordinate.h> // for use in vector 00028 00029 #include <vector> 00030 #include <memory> // for auto_ptr 00031 00032 #ifdef _MSC_VER 00033 #pragma warning(push) 00034 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class 00035 #endif 00036 00037 // Forward declarations 00038 namespace geos { 00039 namespace geom { 00040 //class Geometry; 00041 //class MultiPoint; 00042 class LineString; 00043 //class Coordinate; 00044 } 00045 } 00046 00047 namespace geos { 00048 namespace operation { // geos::operation 00049 namespace overlay { // geos::operation::overlay 00050 namespace validate { // geos::operation::overlay::validate 00051 00053 // 00054 class GEOS_DLL OffsetPointGenerator { 00055 00056 public: 00057 00058 OffsetPointGenerator(const geom::Geometry& geom, double offset); 00059 00061 std::auto_ptr< std::vector<geom::Coordinate> > getPoints(); 00062 00063 private: 00064 00065 const geom::Geometry& g; 00066 00067 double offsetDistance; 00068 00069 std::auto_ptr< std::vector<geom::Coordinate> > offsetPts; 00070 00071 void extractPoints(const geom::LineString* line); 00072 00073 void computeOffsets(const geom::Coordinate& p0, 00074 const geom::Coordinate& p1); 00075 00076 // Declare type as noncopyable 00077 OffsetPointGenerator(const OffsetPointGenerator& other); 00078 OffsetPointGenerator& operator=(const OffsetPointGenerator& rhs); 00079 }; 00080 00081 } // namespace geos::operation::overlay::validate 00082 } // namespace geos::operation::overlay 00083 } // namespace geos::operation 00084 } // namespace geos 00085 00086 #ifdef _MSC_VER 00087 #pragma warning(pop) 00088 #endif 00089 00090 #endif // ndef GEOS_OP_OVERLAY_OFFSETPOINTGENERATOR_H 00091 00092 /********************************************************************** 00093 * $Log$ 00094 **********************************************************************/ 00095