MCIndexPointSnapper.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: noding/snapround/MCIndexPointSnapper.java r486 (JTS-1.12+)
 *
 **********************************************************************/
 
#pragma once
 
#include <cstddef>
#include <geos/export.h>
 
// Forward declarations
namespace geos {
namespace geom {
class Envelope;
}
namespace index {
class SpatialIndex;
}
namespace noding {
class SegmentString;
namespace snapround {
class HotPixel;
}
}
}
 
namespace geos {
namespace noding { // geos::noding
namespace snapround { // geos::noding::snapround
 
class GEOS_DLL MCIndexPointSnapper {
 
public:
 
 
    MCIndexPointSnapper(index::SpatialIndex& nIndex)
        :
        index(nIndex)
    {}
 
    bool snap(HotPixel& hotPixel, SegmentString* parentEdge,
              std::size_t vertexIndex);
 
    bool
    snap(HotPixel& hotPixel)
    {
        return snap(hotPixel, nullptr, 0);
    }
 
    geom::Envelope getSafeEnvelope(const HotPixel& hp) const;
 
 
private:
 
    static constexpr double SAFE_ENV_EXPANSION_FACTOR = 0.75;
 
    index::SpatialIndex& index;
 
    // Declare type as noncopyable
    MCIndexPointSnapper(const MCIndexPointSnapper& other) = delete;
    MCIndexPointSnapper& operator=(const MCIndexPointSnapper& rhs) = delete;
};
 
 
} // namespace geos::noding::snapround
} // namespace geos::noding
} // namespace geos