DYT/Tool/OpenSceneGraph-3.6.5/include/geos/geomgraph/index/SweepLineSegment.h
2024-12-25 07:49:36 +08:00

58 lines
1.4 KiB
C++

/**********************************************************************
*
* GEOS - Geometry Engine Open Source
* http://geos.osgeo.org
*
* 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.
*
**********************************************************************/
#pragma once
#include <cstddef>
#include <geos/export.h>
#include <geos/geomgraph/index/SweepLineEventObj.h> // for inheritance
// 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 SweepLineSegment: public SweepLineEventOBJ {
public:
SweepLineSegment(Edge* newEdge, std::size_t newPtIndex);
~SweepLineSegment() override = default;
double getMinX();
double getMaxX();
void computeIntersections(SweepLineSegment* ss, SegmentIntersector* si);
protected:
Edge* edge;
const geom::CoordinateSequence* pts;
std::size_t ptIndex;
};
} // namespace geos.geomgraph.index
} // namespace geos.geomgraph
} // namespace geos