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