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