/usr/include/geos/planargraph/Edge.h is in libgeos++-dev 3.6.2-1build2.
This file is owned by root:root, with mode 0o644.
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*
* GEOS - Geometry Engine Open Source
* http://geos.osgeo.org
*
* Copyright (C) 2001-2002 Vivid Solutions Inc.
* Copyright (C) 2005-2006 Refractions Research Inc.
*
* 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.
*
**********************************************************************/
#ifndef GEOS_PLANARGRAPH_EDGE_H
#define GEOS_PLANARGRAPH_EDGE_H
#include <geos/export.h>
#include <geos/planargraph/GraphComponent.h> // for inheritance
#include <vector> // for typedefs
#include <set> // for typedefs
#include <iosfwd> // ostream
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif
// Forward declarations
namespace geos {
namespace planargraph {
class DirectedEdgeStar;
class DirectedEdge;
class Edge;
class Node;
}
}
namespace geos {
namespace planargraph { // geos.planargraph
/**
* \brief Represents an undirected edge of a PlanarGraph.
*
* An undirected edge in fact simply acts as a central point of reference
* for two opposite DirectedEdge.
*
* Usually a client using a PlanarGraph will subclass Edge
* to add its own application-specific data and methods.
*/
class GEOS_DLL Edge: public GraphComponent {
public:
friend std::ostream& operator<< (std::ostream& os, const Node&);
/// Set of const Edges pointers
typedef std::set<const Edge *> ConstSet;
/// Set of non-const Edges pointers
typedef std::set<Edge *> NonConstSet;
/// Vector of non-const Edges pointers
typedef std::vector<Edge *> NonConstVect;
/// Vector of const Edges pointers
typedef std::vector<const Edge *> ConstVect;
protected:
/** \brief The two DirectedEdges associated with this Edge */
std::vector<DirectedEdge*> dirEdge;
/**
* \brief Constructs an Edge whose DirectedEdges are not yet set.
*
* Be sure to call setDirectedEdges(DirectedEdge, DirectedEdge)
*/
public:
/** \brief
* Constructs a Edge whose DirectedEdges are
* not yet set.
*
* Be sure to call
* {@link setDirectedEdges(DirectedEdge, DirectedEdge)}
*/
Edge(): dirEdge() {}
/**
* \brief Constructs an Edge initialized with the given DirectedEdges.
*
* For each DirectedEdge: sets the Edge, sets the symmetric
* DirectedEdge, and adds this Edge to its from-Node.
*/
Edge(DirectedEdge *de0, DirectedEdge *de1)
:
dirEdge()
{
setDirectedEdges(de0, de1);
}
/**
* \brief Initializes this Edge's two DirectedEdges.
*
* For each DirectedEdge:
* sets the Edge, sets the symmetric DirectedEdge, and
* adds this Edge to its from-Node.
*/
void setDirectedEdges(DirectedEdge *de0, DirectedEdge *de1);
/**
* \brief Returns one of the DirectedEdges associated with this Edge.
* @param i 0 or 1
*/
DirectedEdge* getDirEdge(int i);
/**
* \brief Returns the DirectedEdge that starts from the given node,
* or null if the node is not one of the two nodes associated
* with this Edge.
*/
DirectedEdge* getDirEdge(Node *fromNode);
/**
* \brief If <code>node</code> is one of the two nodes associated
* with this Edge, returns the other node; otherwise returns null.
*/
Node* getOppositeNode(Node *node);
};
/// Print a Edge
std::ostream& operator<<(std::ostream& os, const Edge& n);
/// For backward compatibility
//typedef Edge planarEdge;
} // namespace geos::planargraph
} // namespace geos
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#endif // GEOS_PLANARGRAPH_EDGE_H
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