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MonotoneChainSelectAction.h

00001 /**********************************************************************
00002  * $Id: MonotoneChainSelectAction.h 2556 2009-06-06 22:22:28Z strk $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2001-2002 Vivid Solutions Inc.
00008  *
00009  * This is free software; you can redistribute and/or modify it under
00010  * the terms of the GNU Lesser General Public Licence as published
00011  * by the Free Software Foundation. 
00012  * See the COPYING file for more information.
00013  *
00014  **********************************************************************
00015  *
00016  * Last port: index/chain/MonotoneChainSelectAction.java rev. 1.6 (JTS-1.10)
00017  *
00018  **********************************************************************/
00019 
00020 #ifndef GEOS_IDX_CHAIN_MONOTONECHAINSELECTACTION_H
00021 #define GEOS_IDX_CHAIN_MONOTONECHAINSELECTACTION_H
00022 
00023 #include <geos/export.h>
00024 #include <geos/geom/LineSegment.h> // composition
00025 #include <geos/geom/Envelope.h> // composition
00026 
00027 
00028 // Forward declarations
00029 namespace geos {
00030         namespace index { 
00031                 namespace chain { 
00032                         class MonotoneChain;
00033                 }
00034         }
00035 }
00036 
00037 namespace geos {
00038 namespace index { // geos::index
00039 namespace chain { // geos::index::chain
00040 
00046 class GEOS_DLL MonotoneChainSelectAction {
00047 
00048 protected:
00049 
00050         geom::LineSegment selectedSegment;
00051 
00052 public:
00053 
00054         MonotoneChainSelectAction() {}
00055 
00056         virtual ~MonotoneChainSelectAction() {}
00057 
00059         virtual void select(MonotoneChain& mc, unsigned int start);
00060 
00067         virtual void select(const geom::LineSegment& seg) = 0;
00068 
00069         // these envelopes are used during the MonotoneChain search process
00070         // should only be visible by classes in this package
00071         geom::Envelope tempEnv1;
00072 };
00073 
00074 
00075 } // namespace geos::index::chain
00076 } // namespace geos::index
00077 } // namespace geos
00078 
00079 #endif // GEOS_IDX_CHAIN_MONOTONECHAINSELECTACTION_H
00080 
00081 /**********************************************************************
00082  * $Log$
00083  * Revision 1.1  2006/03/22 18:12:31  strk
00084  * indexChain.h header split.
00085  *
00086  **********************************************************************/
00087 

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