79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
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/**********************************************************************
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*
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* GEOS - Geometry Engine Open Source
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* http://geos.osgeo.org
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*
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* Copyright (C) 2006 Refractions Research Inc.
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU Lesser General Public Licence as published
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* by the Free Software Foundation.
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* See the COPYING file for more information.
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*
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**********************************************************************
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*
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* Last port: operation/linemerge/LineMergeDirectedEdge.java r378 (JTS-1.12)
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*
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**********************************************************************/
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#pragma once
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#include <geos/export.h>
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#include <geos/planargraph/DirectedEdge.h> // for inheritance
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// Forward declarations
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namespace geos {
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namespace geom {
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class Coordinate;
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//class LineString;
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}
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namespace planargraph {
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class Node;
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}
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}
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namespace geos {
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namespace operation { // geos::operation
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namespace linemerge { // geos::operation::linemerge
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/**
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* \brief
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* A [DirectedEdge](@ref planargraph::DirectedEdge) of a LineMergeGraph.
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*
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*/
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class GEOS_DLL LineMergeDirectedEdge: public planargraph::DirectedEdge {
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public:
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/** \brief
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* Constructs a LineMergeDirectedEdge connecting the `from`
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* node to the `to` node.
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*
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* @param from `from` node
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* @param to `to` node
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* @param directionPt specifies this DirectedEdge's direction (given by an
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* imaginary line from the `from` node to
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* `directionPt`)
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* @param edgeDirection whether this DirectedEdge's direction is the same as or
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* opposite to that of the parent Edge (if any)
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*/
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LineMergeDirectedEdge(planargraph::Node* from,
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planargraph::Node* to,
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const geom::Coordinate& directionPt,
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bool edgeDirection);
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/** \brief
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* Returns the directed edge that starts at this directed edge's end point, or null
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* if there are zero or multiple directed edges starting there.
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* @param checkDirection only consider directed edges with same direction as parent edge
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* @return the directed edge
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* @return `null` if there are zero or multiple directed edges starting there
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*/
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LineMergeDirectedEdge* getNext(bool checkDirection = false);
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};
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} // namespace geos::operation::linemerge
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} // namespace geos::operation
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} // namespace geos
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