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MonotoneChainOverlapAction.h

00001 /**********************************************************************
00002  * $Id: MonotoneChainOverlapAction.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/MonotoneChainOverlapAction.java rev. 1.6 (JTS-1.10)
00017  *
00018  **********************************************************************/
00019 
00020 #ifndef GEOS_IDX_CHAIN_MONOTONECHAINOVERLAPACTION_H
00021 #define GEOS_IDX_CHAIN_MONOTONECHAINOVERLAPACTION_H
00022 
00023 #include <geos/export.h>
00024 #include <geos/geom/LineSegment.h>
00025 #include <geos/geom/Envelope.h>
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 
00045 class GEOS_DLL MonotoneChainOverlapAction {
00046 
00047 protected:
00048 
00049         geom::LineSegment overlapSeg1;
00050 
00051         geom::LineSegment overlapSeg2;
00052 
00053 public:
00054 
00055         MonotoneChainOverlapAction() {};
00056 
00057         virtual ~MonotoneChainOverlapAction() {};
00058 
00067         virtual void overlap(MonotoneChain& mc1, size_t start1,
00068                              MonotoneChain& mc2, size_t start2);
00069 
00076         virtual void overlap(const geom::LineSegment& /*seg1*/,
00077                              const geom::LineSegment& /*seg2*/)
00078         {}
00079 
00080         // these envelopes are used during the MonotoneChain search process
00081         geom::Envelope tempEnv1;
00082         geom::Envelope tempEnv2;
00083 };
00084 
00085 } // namespace geos::index::chain
00086 } // namespace geos::index
00087 } // namespace geos
00088 
00089 #endif // GEOS_IDX_CHAIN_MONOTONECHAINOVERLAPACTION_H
00090 
00091 /**********************************************************************
00092  * $Log$
00093  * Revision 1.1  2006/03/22 18:12:31  strk
00094  * indexChain.h header split.
00095  *
00096  **********************************************************************/
00097 

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