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/**********************************************************************
* $Id: IntersectionAdder.cpp 1820 2006-09-06 16:54:23Z mloskot $
*
* 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 Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
**********************************************************************
*
* Last port: noding/SingleInteriorIntersectionFinder.java rev. ??? (JTS-1.8)
*
**********************************************************************/
#include <geos/noding/SingleInteriorIntersectionFinder.h>
#include <geos/noding/SegmentString.h>
#include <geos/algorithm/LineIntersector.h>
#include <geos/geom/Coordinate.h>
using namespace geos::geom;
namespace geos {
namespace noding { // geos.noding
/*public (override) */
void
SingleInteriorIntersectionFinder::processIntersections(
SegmentString* e0, int segIndex0,
SegmentString* e1, int segIndex1)
{
using geos::geom::Coordinate;
// short-circuit if intersection already found
if (hasIntersection())
return;
// don't bother intersecting a segment with itself
if (e0 == e1 && segIndex0 == segIndex1) return;
const Coordinate& p00 = e0->getCoordinate(segIndex0);
const Coordinate& p01 = e0->getCoordinate(segIndex0 + 1);
const Coordinate& p10 = e1->getCoordinate(segIndex1);
const Coordinate& p11 = e1->getCoordinate(segIndex1 + 1);
li.computeIntersection(p00, p01, p10, p11);
//if (li.hasIntersection() && li.isProper()) Debug.println(li);
if (li.hasIntersection())
{
if (li.isInteriorIntersection())
{
intSegments.resize(4);
intSegments[0] = p00;
intSegments[1] = p01;
intSegments[2] = p10;
intSegments[3] = p11;
interiorIntersection = li.getIntersection(0);
}
}
}
} // namespace geos.noding
} // namespace geos
/**********************************************************************
* $Log$
**********************************************************************/
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