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) 2009 Sandro Santilli <strk@keybit.net> 00007 * 00008 * This is free software; you can redistribute and/or modify it under 00009 * the terms of the GNU Lesser General Public Licence as published 00010 * by the Free Software Foundation. 00011 * See the COPYING file for more information. 00012 * 00013 ********************************************************************** 00014 * 00015 * Last port: operation/buffer/BufferParameters.java r378 (JTS-1.12) 00016 * 00017 **********************************************************************/ 00018 00019 #ifndef GEOS_OP_BUFFER_BUFFERPARAMETERS_H 00020 #define GEOS_OP_BUFFER_BUFFERPARAMETERS_H 00021 00022 #include <geos/export.h> 00023 00024 //#include <vector> 00025 00026 //#include <geos/algorithm/LineIntersector.h> // for composition 00027 //#include <geos/geom/Coordinate.h> // for composition 00028 //#include <geos/geom/LineSegment.h> // for composition 00029 00030 #ifdef _MSC_VER 00031 #pragma warning(push) 00032 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class 00033 #endif 00034 00035 // Forward declarations 00036 namespace geos { 00037 namespace geom { 00038 class CoordinateSequence; 00039 class PrecisionModel; 00040 } 00041 namespace operation { 00042 namespace buffer { 00043 class OffsetCurveVertexList; 00044 } 00045 } 00046 } 00047 00048 namespace geos { 00049 namespace operation { // geos.operation 00050 namespace buffer { // geos.operation.buffer 00051 00057 class GEOS_DLL BufferParameters 00058 { 00059 00060 public: 00061 00063 enum EndCapStyle { 00064 00066 CAP_ROUND=1, 00067 00069 CAP_FLAT=2, 00070 00072 CAP_SQUARE=3 00073 }; 00074 00076 enum JoinStyle { 00077 00079 JOIN_ROUND=1, 00080 00082 JOIN_MITRE=2, 00083 00085 JOIN_BEVEL=3 00086 }; 00087 00091 // 00096 static const int DEFAULT_QUADRANT_SEGMENTS = 8; 00097 00099 // 00102 static const double DEFAULT_MITRE_LIMIT; // 5.0 (in .cpp file) 00103 00105 BufferParameters(); 00106 00108 // 00111 BufferParameters(int quadrantSegments); 00112 00116 // 00120 BufferParameters(int quadrantSegments, EndCapStyle endCapStyle); 00121 00125 // 00131 BufferParameters(int quadrantSegments, EndCapStyle endCapStyle, 00132 JoinStyle joinStyle, double mitreLimit); 00133 00135 // 00138 int getQuadrantSegments() const { return quadrantSegments; } 00139 00143 // 00169 void setQuadrantSegments(int quadSegs); 00170 00174 // 00179 static double bufferDistanceError(int quadSegs); 00180 00182 // 00185 EndCapStyle getEndCapStyle() const { return endCapStyle; } 00186 00188 // 00196 void setEndCapStyle(EndCapStyle style) 00197 { 00198 endCapStyle = style; 00199 } 00200 00202 // 00205 JoinStyle getJoinStyle() const { return joinStyle; } 00206 00210 // 00213 // 00216 void setJoinStyle(JoinStyle style) 00217 { 00218 joinStyle = style; 00219 } 00220 00222 // 00225 double getMitreLimit() const { return mitreLimit; } 00226 00228 // 00240 void setMitreLimit(double limit) 00241 { 00242 mitreLimit = limit; 00243 } 00244 00262 void setSingleSided(bool isSingleSided) 00263 { 00264 _isSingleSided = isSingleSided; 00265 } 00266 00272 bool isSingleSided() const { 00273 return _isSingleSided; 00274 } 00275 00276 00277 private: 00278 00280 int quadrantSegments; 00281 00283 EndCapStyle endCapStyle; 00284 00286 JoinStyle joinStyle; 00287 00289 double mitreLimit; 00290 00291 bool _isSingleSided; 00292 }; 00293 00294 } // namespace geos::operation::buffer 00295 } // namespace geos::operation 00296 } // namespace geos 00297 00298 #ifdef _MSC_VER 00299 #pragma warning(pop) 00300 #endif 00301 00302 #endif // ndef GEOS_OP_BUFFER_BUFFERPARAMETERS_H 00303