GEOS
3.6.2
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00001 /********************************************************************** 00002 * 00003 * GEOS - Geometry Engine Open Source 00004 * http://geos.osgeo.org 00005 * 00006 * Copyright (C) 2006 Refractions Research Inc. 00007 * 00008 * This is free software; you can redistribute and/or modify it under 00009 * the terms of the GNU Lesser General Licence as published 00010 * by the Free Software Foundation. 00011 * See the COPYING file for more information. 00012 * 00013 ********************************************************************** 00014 * 00015 * Last port: simplify/TaggedLinesSimplifier.java rev. 1.4 (JTS-1.7.1) 00016 * 00017 ********************************************************************** 00018 * 00019 * NOTES: changed from JTS design adding a private 00020 * TaggedLineStringSimplifier member and making 00021 * simplify(collection) method become a templated 00022 * function. 00023 * 00024 **********************************************************************/ 00025 00026 #ifndef GEOS_SIMPLIFY_TAGGEDLINESSIMPLIFIER_H 00027 #define GEOS_SIMPLIFY_TAGGEDLINESSIMPLIFIER_H 00028 00029 #include <geos/export.h> 00030 #include <vector> 00031 #include <memory> 00032 #include <cassert> 00033 00034 #include <geos/simplify/LineSegmentIndex.h> // for templated function body 00035 #include <geos/simplify/TaggedLineStringSimplifier.h> 00036 00037 #ifdef _MSC_VER 00038 #pragma warning(push) 00039 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class 00040 #endif 00041 00042 // Forward declarations 00043 namespace geos { 00044 namespace simplify { 00045 class TaggedLineString; 00046 } 00047 } 00048 00049 namespace geos { 00050 namespace simplify { // geos::simplify 00051 00056 class GEOS_DLL TaggedLinesSimplifier { 00057 00058 public: 00059 00060 TaggedLinesSimplifier(); 00061 00070 void setDistanceTolerance(double tolerance); 00071 00085 template <class iterator_type> 00086 void simplify( 00087 iterator_type begin, 00088 iterator_type end) 00089 { 00090 // add lines to the index 00091 for (iterator_type it=begin; it != end; ++it) { 00092 assert(*it); 00093 inputIndex->add(*(*it)); 00094 } 00095 00096 // Simplify lines 00097 for (iterator_type it=begin; it != end; ++it) { 00098 assert(*it); 00099 simplify(*(*it)); 00100 } 00101 } 00102 00103 00104 private: 00105 00106 void simplify(TaggedLineString& line); 00107 00108 std::auto_ptr<LineSegmentIndex> inputIndex; 00109 00110 std::auto_ptr<LineSegmentIndex> outputIndex; 00111 00112 std::auto_ptr<TaggedLineStringSimplifier> taggedlineSimplifier; 00113 }; 00114 00115 } // namespace geos::simplify 00116 } // namespace geos 00117 00118 #ifdef _MSC_VER 00119 #pragma warning(pop) 00120 #endif 00121 00122 #endif // GEOS_SIMPLIFY_TAGGEDLINESSIMPLIFIER_H