88 lines
2.4 KiB
C++
88 lines
2.4 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) 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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*
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* Last port: operation/overlay/validate/OffsetPointGenerator.java rev. 1.1 (JTS-1.10)
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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/algorithm/PointLocator.h> // for composition
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#include <geos/geom/Geometry.h> // for unique_ptr visibility of dtor
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#include <geos/geom/MultiPoint.h> // for unique_ptr visibility of dtor
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#include <geos/geom/Coordinate.h> // for use in vector
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#include <vector>
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#include <memory> // for unique_ptr
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#ifdef _MSC_VER
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#pragma warning(push)
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#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
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#endif
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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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//class MultiPoint;
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class LineString;
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//class Coordinate;
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}
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}
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namespace geos {
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namespace operation { // geos::operation
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namespace overlay { // geos::operation::overlay
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namespace validate { // geos::operation::overlay::validate
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/// Generates points offset from both sides of all segments in a geometry
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//
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class GEOS_DLL OffsetPointGenerator {
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public:
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OffsetPointGenerator(const geom::Geometry& geom, double offset);
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/// Gets the computed offset points.
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std::unique_ptr< std::vector<geom::Coordinate> > getPoints();
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private:
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const geom::Geometry& g;
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double offsetDistance;
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std::unique_ptr< std::vector<geom::Coordinate> > offsetPts;
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void extractPoints(const geom::LineString* line);
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void computeOffsets(const geom::Coordinate& p0,
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const geom::Coordinate& p1);
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// Declare type as noncopyable
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OffsetPointGenerator(const OffsetPointGenerator& other) = delete;
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OffsetPointGenerator& operator=(const OffsetPointGenerator& rhs) = delete;
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};
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} // namespace geos::operation::overlay::validate
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} // namespace geos::operation::overlay
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} // namespace geos::operation
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} // namespace geos
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif
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