93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
/**********************************************************************
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*
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* GEOS - Geometry Engine Open Source
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* http://geos.osgeo.org
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*
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* Copyright (C) 2005-2006 Refractions Research Inc.
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU Lesser General Public Licence as published
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* by the Free Software Foundation.
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* See the COPYING file for more information.
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*
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**********************************************************************/
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#pragma once
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#include <geos/export.h>
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#include <geos/geom/Coordinate.h> // for composition
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// Forward declarations
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namespace geos {
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namespace geom {
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class Geometry;
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}
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namespace precision {
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class CommonBitsRemover;
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class CommonCoordinateFilter;
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}
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}
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namespace geos {
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namespace precision { // geos.precision
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/** \brief
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* Allow computing and removing common mantissa bits from one or
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* more Geometries.
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*
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*/
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class GEOS_DLL CommonBitsRemover {
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private:
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geom::Coordinate commonCoord;
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CommonCoordinateFilter* ccFilter;
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CommonBitsRemover(const CommonBitsRemover&) = delete;
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CommonBitsRemover& operator=(const CommonBitsRemover&) = delete;
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public:
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CommonBitsRemover();
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~CommonBitsRemover();
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/**
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* Add a geometry to the set of geometries whose common bits are
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* being computed. After this method has executed the
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* common coordinate reflects the common bits of all added
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* geometries.
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*
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* @param geom a Geometry to test for common bits
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*/
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void add(const geom::Geometry* geom);
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/**
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* The common bits of the Coordinates in the supplied Geometries.
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*/
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geom::Coordinate& getCommonCoordinate();
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/** \brief
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* Removes the common coordinate bits from a Geometry.
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* The coordinates of the Geometry are changed.
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*
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* @param geom the Geometry from which to remove the common
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* coordinate bits
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*/
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void removeCommonBits(geom::Geometry* geom);
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/** \brief
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* Adds the common coordinate bits back into a Geometry.
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* The coordinates of the Geometry are changed.
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*
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* @param geom the Geometry to which to add the common coordinate bits
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* @return the shifted Geometry
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*/
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geom::Geometry* addCommonBits(geom::Geometry* geom);
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};
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} // namespace geos.precision
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} // namespace geos
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