75 lines
1.7 KiB
C
75 lines
1.7 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) 2001-2002 Vivid Solutions 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: index/chain/MonotoneChainSelectAction.java rev. 1.6 (JTS-1.10)
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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/geom/LineSegment.h> // composition
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#include <geos/geom/Envelope.h> // composition
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// Forward declarations
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namespace geos {
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namespace index {
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namespace chain {
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class MonotoneChain;
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}
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}
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}
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namespace geos {
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namespace index { // geos::index
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namespace chain { // geos::index::chain
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/**
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* The action for the internal iterator for performing
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* Envelope select queries on a MonotoneChain
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*
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*/
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class GEOS_DLL MonotoneChainSelectAction {
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protected:
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geom::LineSegment selectedSegment;
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public:
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MonotoneChainSelectAction() {}
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virtual
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~MonotoneChainSelectAction() {}
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/// This function can be overridden if the original chain is needed
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virtual void select(const MonotoneChain& mc, std::size_t start);
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/**
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* This is a convenience function which can be overridden
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* to obtain the actual line segment which is selected
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*
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* @param seg
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*/
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virtual void select(const geom::LineSegment& seg) = 0;
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};
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} // namespace geos::index::chain
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} // namespace geos::index
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} // namespace geos
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