OffsetPointGenerator.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2006 Refractions Research Inc.
 *
 * 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/overlay/validate/OffsetPointGenerator.java rev. 1.1 (JTS-1.10)
 *
 **********************************************************************/
 
#ifndef GEOS_OP_OVERLAY_OFFSETPOINTGENERATOR_H
#define GEOS_OP_OVERLAY_OFFSETPOINTGENERATOR_H
 
#include <geos/export.h>
#include <geos/algorithm/PointLocator.h> // for composition
#include <geos/geom/Geometry.h> // for auto_ptr visibility of dtor
#include <geos/geom/MultiPoint.h> // for auto_ptr visibility of dtor
#include <geos/geom/Coordinate.h> // for use in vector
 
#include <vector>
#include <memory> // for auto_ptr
 
#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 Geometry;
                //class MultiPoint;
                class LineString;
                //class Coordinate;
        }
}
 
namespace geos {
namespace operation { // geos::operation
namespace overlay { // geos::operation::overlay
namespace validate { // geos::operation::overlay::validate

//
class GEOS_DLL OffsetPointGenerator {
 
public:
 
        OffsetPointGenerator(const geom::Geometry& geom, double offset);

        std::auto_ptr< std::vector<geom::Coordinate> > getPoints();
 
private:
 
        const geom::Geometry& g;
 
        double offsetDistance;
 
        std::auto_ptr< std::vector<geom::Coordinate> > offsetPts;
 
        void extractPoints(const geom::LineString* line);
 
        void computeOffsets(const geom::Coordinate& p0,
                        const geom::Coordinate& p1);
 
    // Declare type as noncopyable
    OffsetPointGenerator(const OffsetPointGenerator& other);
    OffsetPointGenerator& operator=(const OffsetPointGenerator& rhs);
};
 
} // namespace geos::operation::overlay::validate
} // namespace geos::operation::overlay
} // namespace geos::operation
} // namespace geos
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
#endif // ndef GEOS_OP_OVERLAY_OFFSETPOINTGENERATOR_H