97 lines
2.4 KiB
C
97 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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#pragma once
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#include <geos/export.h>
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#include <vector>
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#include <geos/noding/Noder.h>
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// Forward declarations
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namespace geos {
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namespace noding {
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class SegmentString;
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class SegmentIntersector;
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}
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}
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namespace geos {
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namespace noding { // geos.noding
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/** \brief
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* Base class for {@link Noder}s which make a single
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* pass to find intersections.
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*
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* This allows using a custom SegmentIntersector
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* (which for instance may simply identify intersections, rather than
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* insert them).
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*
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* Last port: noding/SinglePassNoder.java rev. 1.3 (JTS-1.7)
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*
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* TODO: Noder inheritance (that's just an interface!)
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*
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*/
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class GEOS_DLL SinglePassNoder : public Noder { // implements Noder
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protected:
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/// Externally owned
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SegmentIntersector* segInt;
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public:
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SinglePassNoder(SegmentIntersector* nSegInt = nullptr): segInt(nSegInt) {}
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~SinglePassNoder() override {}
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/** \brief
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* Sets the SegmentIntersector to use with this noder.
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*
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* A SegmentIntersector will normally add intersection nodes
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* to the input segment strings, but it may not - it may
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* simply record the presence of intersections.
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* However, some Noders may require that intersections be added.
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*
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* @param newSegInt
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*/
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virtual void
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setSegmentIntersector(SegmentIntersector* newSegInt)
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{
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segInt = newSegInt;
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}
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/** \brief
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* Computes the noding for a collection of {@link SegmentString}s.
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*
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* @param segStrings a collection of {@link SegmentString}s to node
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*/
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void computeNodes(std::vector<SegmentString*>* segStrings) override = 0;
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/** \brief
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* Returns a Collection of fully noded {@link SegmentString}s.
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*
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* The SegmentStrings have the same context as their parent.
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*
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* @return a Collection of SegmentStrings
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*/
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std::vector<SegmentString*>* getNodedSubstrings() const override = 0;
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};
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} // namespace geos.noding
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} // namespace geos
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