BufferParameters.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2009  Sandro Santilli <strk@keybit.net>
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: operation/buffer/BufferParameters.java r378 (JTS-1.12)
 *
 **********************************************************************/
 
#ifndef GEOS_OP_BUFFER_BUFFERPARAMETERS_H
#define GEOS_OP_BUFFER_BUFFERPARAMETERS_H
 
#include <geos/export.h>
 
//#include <vector>
 
//#include <geos/algorithm/LineIntersector.h> // for composition
//#include <geos/geom/Coordinate.h> // for composition
//#include <geos/geom/LineSegment.h> // for composition
 
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif
 
// Forward declarations
namespace geos {
        namespace geom {
                class CoordinateSequence;
                class PrecisionModel;
        }
        namespace operation {
                namespace buffer {
                        class OffsetCurveVertexList;
                }
        }
}
 
namespace geos {
namespace operation { // geos.operation
namespace buffer { // geos.operation.buffer

class GEOS_DLL BufferParameters
{
 
public:

        enum EndCapStyle {

                CAP_ROUND=1,

                CAP_FLAT=2,

                CAP_SQUARE=3
        };

        enum JoinStyle {

                JOIN_ROUND=1,

                JOIN_MITRE=2,

                JOIN_BEVEL=3
        };

        //
        static const int DEFAULT_QUADRANT_SEGMENTS = 8;

        //
        static const double DEFAULT_MITRE_LIMIT; // 5.0 (in .cpp file)

        BufferParameters();

        //
        BufferParameters(int quadrantSegments);

        //
        BufferParameters(int quadrantSegments, EndCapStyle endCapStyle);

        //
        BufferParameters(int quadrantSegments, EndCapStyle endCapStyle,
                         JoinStyle joinStyle, double mitreLimit);

        //
        int getQuadrantSegments() const { return quadrantSegments; }

        // 
        void setQuadrantSegments(int quadSegs);

        //
        static double bufferDistanceError(int quadSegs);

        //
        EndCapStyle getEndCapStyle() const { return endCapStyle; }

        //
        void setEndCapStyle(EndCapStyle style)
        {
                endCapStyle = style;
        }

        //
        JoinStyle getJoinStyle() const { return joinStyle; }

        //
        //
        void setJoinStyle(JoinStyle style)
        {
                joinStyle = style;
        }

        //
        double getMitreLimit() const { return mitreLimit; }
 
        //
        void setMitreLimit(double limit)
        {
                mitreLimit = limit;
        }

        void setSingleSided(bool isSingleSided)
        {
          _isSingleSided = isSingleSided;
        }

        bool isSingleSided() const {
          return _isSingleSided;
        }
 
 
private:

        int quadrantSegments;

        EndCapStyle endCapStyle;

        JoinStyle joinStyle;

        double mitreLimit;
 
        bool _isSingleSided;
};
 
} // namespace geos::operation::buffer
} // namespace geos::operation
} // namespace geos
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
#endif // ndef GEOS_OP_BUFFER_BUFFERPARAMETERS_H