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SineStarFactory.h

00001 /**********************************************************************
00002  *
00003  * GEOS - Geometry Engine Open Source
00004  * http://geos.refractions.net
00005  *
00006  * Copyright (C) 2011 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: geom/util/SineStarFactory.java r378 (JTS-1.12)
00016  *
00017  **********************************************************************/
00018 
00019 #ifndef GEOS_UTIL_SINESTARFACTORY_H
00020 #define GEOS_UTIL_SINESTARFACTORY_H
00021 
00022 #include <geos/export.h>
00023 
00024 #include <geos/util/GeometricShapeFactory.h> // for inheritance
00025 
00026 #include <memory>
00027 
00028 #ifdef _MSC_VER
00029 #pragma warning(push)
00030 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
00031 #endif
00032 
00033 // Forward declarations
00034 namespace geos {
00035         namespace geom { 
00036                 class Coordinate;
00037                 class Envelope;
00038                 class Polygon;
00039                 class GeometryFactory;
00040                 class PrecisionModel;
00041                 class LineString;
00042         }
00043 }
00044 
00045 namespace geos {
00046 namespace geom { // geos::geom
00047 namespace util { // geos::geom::util
00048 
00058 class GEOS_DLL SineStarFactory : public geos::util::GeometricShapeFactory  {
00059 
00060 protected:
00061 
00062   int numArms;
00063   double armLengthRatio;
00064 
00065 public:
00066 
00075         SineStarFactory(const geom::GeometryFactory* fact)
00076     :
00077     geos::util::GeometricShapeFactory(fact),
00078     numArms(8),
00079     armLengthRatio(0.5)
00080   {}
00081 
00087   void setNumArms(int nArms)
00088   {
00089     numArms = nArms;
00090   }
00091 
00099   void setArmLengthRatio(double armLenRatio)
00100   {
00101         armLengthRatio = armLenRatio;
00102   }
00103 
00109   std::auto_ptr<Polygon> createSineStar() const;
00110 
00111 
00112 };
00113 
00114 } // namespace geos::geom::util
00115 } // namespace geos::geom
00116 } // namespace geos
00117 
00118 #ifdef _MSC_VER
00119 #pragma warning(pop)
00120 #endif
00121 
00122 #endif // GEOS_UTIL_SINESTARFACTORY_H

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