85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
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/**********************************************************************
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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) 2021 Paul Ramsey <pramsey@cleverelephant.ca>
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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/geom/Coordinate.h>
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#include <geos/export.h>
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#include <vector>
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#include <memory>
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namespace geos {
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namespace geom {
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class Coordinate;
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class CoordinateSequence;
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}
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}
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using geos::geom::Coordinate;
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using geos::geom::CoordinateSequence;
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namespace geos {
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namespace simplify { // geos::simplify
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class LinkedLine
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{
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public:
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LinkedLine(const CoordinateSequence& pts);
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bool isRing() const;
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bool isCorner(std::size_t i) const;
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std::size_t size() const;
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std::size_t next(std::size_t i) const;
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std::size_t prev(std::size_t i) const;
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const Coordinate& getCoordinate(std::size_t index) const;
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const Coordinate& prevCoordinate(std::size_t index) const;
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const Coordinate& nextCoordinate(std::size_t index) const;
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bool hasCoordinate(std::size_t index) const;
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void remove(std::size_t index);
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std::unique_ptr<CoordinateSequence> getCoordinates() const;
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private:
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// Members
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const CoordinateSequence& m_coord;
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bool m_isRing;
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std::size_t m_size;
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std::vector<std::size_t> m_next;
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std::vector<std::size_t> m_prev;
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void createNextLinks(std::size_t size);
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void createPrevLinks(std::size_t size);
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}; // LinkedLine
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GEOS_DLL std::ostream& operator<< (std::ostream& os, const LinkedLine& ll);
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} // geos::simplify
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} // geos
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