GEOS
3.2.3
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00001 /********************************************************************** 00002 * $Id: OffsetPointGenerator.h 2780 2009-12-03 19:46:43Z 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/algorithm/PointLocator.h> // for composition 00024 #include <geos/geom/Geometry.h> // for auto_ptr visibility of dtor 00025 #include <geos/geom/MultiPoint.h> // for auto_ptr visibility of dtor 00026 #include <geos/geom/Coordinate.h> // for use in vector 00027 00028 #include <vector> 00029 #include <memory> // for auto_ptr 00030 00031 // Forward declarations 00032 namespace geos { 00033 namespace geom { 00034 //class Geometry; 00035 //class MultiPoint; 00036 class LineString; 00037 //class Coordinate; 00038 } 00039 } 00040 00041 namespace geos { 00042 namespace operation { // geos::operation 00043 namespace overlay { // geos::operation::overlay 00044 namespace validate { // geos::operation::overlay::validate 00045 00047 // 00048 class OffsetPointGenerator { 00049 00050 public: 00051 00052 OffsetPointGenerator(const geom::Geometry& geom, double offset); 00053 00055 std::auto_ptr< std::vector<geom::Coordinate> > getPoints(); 00056 00057 private: 00058 00059 const geom::Geometry& g; 00060 00061 double offsetDistance; 00062 00063 std::auto_ptr< std::vector<geom::Coordinate> > offsetPts; 00064 00065 void extractPoints(const geom::LineString* line); 00066 00067 void computeOffsets(const geom::Coordinate& p0, 00068 const geom::Coordinate& p1); 00069 00070 // Declare type as noncopyable 00071 OffsetPointGenerator(const OffsetPointGenerator& other); 00072 OffsetPointGenerator& operator=(const OffsetPointGenerator& rhs); 00073 }; 00074 00075 } // namespace geos::operation::overlay::validate 00076 } // namespace geos::operation::overlay 00077 } // namespace geos::operation 00078 } // namespace geos 00079 00080 #endif // ndef GEOS_OP_OVERLAY_OFFSETPOINTGENERATOR_H 00081 00082 /********************************************************************** 00083 * $Log$ 00084 **********************************************************************/ 00085