LinkedLine.h
/**********************************************************************
*
* 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;
}
}
namespace geos {
namespace simplify { // geos::simplify
class LinkedLine
{
using Coordinate = geos::geom::Coordinate;
using CoordinateSequence = geos::geom::CoordinateSequence;
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
geos::geom::CoordinateSequence
The internal representation of a list of coordinates inside a Geometry.
Definition CoordinateSequence.h:56
geos::geom::Coordinate
Coordinate is the lightweight class used to store coordinates.
Definition Coordinate.h:217
geos::geom
Definition Angle.h:26
geos::simplify
Classes which implement algorithms for simplifying or generalizing geometries.
Definition Corner.h:26
geos
Basic namespace for all GEOS functionalities.
Definition geos.h:38