/usr/include/geos/operation/buffer/RightmostEdgeFinder.h is in libgeos-dev 3.2.2-3ubuntu1.
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* $Id: RightmostEdgeFinder.h 2559 2009-06-08 10:07:05Z strk $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 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.
*
**********************************************************************
*
* Last port: operation/buffer/RightmostEdgeFinder.java rev. 1.14 (JTS-1.10)
*
**********************************************************************/
#ifndef GEOS_OP_BUFFER_RIGHTMOSTEDGEFINDER_H
#define GEOS_OP_BUFFER_RIGHTMOSTEDGEFINDER_H
#include <geos/export.h>
#include <geos/geom/Coordinate.h> // for composition
#include <vector>
// Forward declarations
namespace geos {
namespace geom {
}
namespace geomgraph {
class DirectedEdge;
}
}
namespace geos {
namespace operation { // geos.operation
namespace buffer { // geos.operation.buffer
/**
* \brief
* A RightmostEdgeFinder find the geomgraph::DirectedEdge in a list which has
* the highest coordinate, and which is oriented L to R at that point.
* (I.e. the right side is on the RHS of the edge.)
*/
class GEOS_DLL RightmostEdgeFinder {
private:
int minIndex;
geom::Coordinate minCoord;
geomgraph::DirectedEdge *minDe;
geomgraph::DirectedEdge *orientedDe;
void findRightmostEdgeAtNode();
void findRightmostEdgeAtVertex();
void checkForRightmostCoordinate(geomgraph::DirectedEdge *de);
int getRightmostSide(geomgraph::DirectedEdge *de, int index);
int getRightmostSideOfSegment(geomgraph::DirectedEdge *de, int i);
public:
/** \brief
* A RightmostEdgeFinder finds the geomgraph::DirectedEdge with the
* rightmost coordinate.
*
* The geomgraph::DirectedEdge returned is guaranteed to have the R of
* the world on its RHS.
*/
RightmostEdgeFinder();
geomgraph::DirectedEdge* getEdge();
geom::Coordinate& getCoordinate();
/// Note that only Forward DirectedEdges will be checked
void findEdge(std::vector<geomgraph::DirectedEdge*>* dirEdgeList);
};
/*public*/
inline geomgraph::DirectedEdge*
RightmostEdgeFinder::getEdge()
{
return orientedDe;
}
/*public*/
inline geom::Coordinate&
RightmostEdgeFinder::getCoordinate()
{
return minCoord;
}
} // namespace geos::operation::buffer
} // namespace geos::operation
} // namespace geos
#endif // ndef GEOS_OP_BUFFER_RIGHTMOSTEDGEFINDER_H
/**********************************************************************
* $Log$
* Revision 1.3 2006/05/04 12:19:59 strk
* Added note about findEdge() only scanning for forward DirectedEdges
*
* Revision 1.2 2006/04/05 09:20:25 strk
* Added port informations and many assertion checking.
* Fixed bug in getRightmostSide() method ( a "testing-only" corner case )
*
* Revision 1.1 2006/03/14 00:19:40 strk
* opBuffer.h split, streamlined headers in some (not all) files in operation/buffer/
*
**********************************************************************/
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