/usr/include/geos/geomgraph/index/MonotoneChainEdge.h is in libgeos-dev 3.2.2-3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* $Id: MonotoneChainEdge.h 2556 2009-06-06 22:22:28Z strk $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2005-2006 Refractions Research Inc.
* Copyright (C) 2001-2002 Vivid Solutions 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_GEOMGRAPH_INDEX_MONOTONECHAINEDGE_H
#define GEOS_GEOMGRAPH_INDEX_MONOTONECHAINEDGE_H
#include <geos/export.h>
#include <geos/geom/Envelope.h> // for composition
// Forward declarations
namespace geos {
namespace geom {
class CoordinateSequence;
}
namespace geomgraph {
class Edge;
namespace index {
class SegmentIntersector;
}
}
}
namespace geos {
namespace geomgraph { // geos::geomgraph
namespace index { // geos::geomgraph::index
class GEOS_DLL MonotoneChainEdge {
public:
//MonotoneChainEdge();
~MonotoneChainEdge();
MonotoneChainEdge(Edge *newE);
const geom::CoordinateSequence* getCoordinates();
std::vector<int>& getStartIndexes();
double getMinX(int chainIndex);
double getMaxX(int chainIndex);
void computeIntersects(const MonotoneChainEdge &mce,
SegmentIntersector &si);
void computeIntersectsForChain(int chainIndex0,
const MonotoneChainEdge &mce, int chainIndex1,
SegmentIntersector &si);
protected:
Edge *e;
const geom::CoordinateSequence* pts; // cache a reference to the coord array, for efficiency
// the lists of start/end indexes of the monotone chains.
// Includes the end point of the edge as a sentinel
std::vector<int> startIndex;
// these envelopes are created once and reused
geom::Envelope env1;
geom::Envelope env2;
private:
void computeIntersectsForChain(int start0, int end0,
const MonotoneChainEdge &mce,
int start1, int end1,
SegmentIntersector &ei);
};
} // namespace geos.geomgraph.index
} // namespace geos.geomgraph
} // namespace geos
#endif
/**********************************************************************
* $Log$
* Revision 1.1 2006/03/14 12:55:55 strk
* Headers split: geomgraphindex.h, nodingSnapround.h
*
**********************************************************************/
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