MonotoneChainOverlapAction.h

00001 /**********************************************************************
00002  * $Id: MonotoneChainOverlapAction.h 1986 2007-06-08 15:27:42Z mloskot $
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 #ifndef GEOS_IDX_CHAIN_MONOTONECHAINOVERLAPACTION_H
00017 #define GEOS_IDX_CHAIN_MONOTONECHAINOVERLAPACTION_H
00018 
00019 
00020 // Forward declarations
00021 namespace geos {
00022         namespace geom {
00023                 class Envelope;
00024                 class LineSegment;
00025         }
00026         namespace index { 
00027                 namespace chain { 
00028                         class MonotoneChain;
00029                 }
00030         }
00031 }
00032 
00033 namespace geos {
00034 namespace index { // geos::index
00035 namespace chain { // geos::index::chain
00036 
00041 class MonotoneChainOverlapAction {
00042 
00043 protected:
00044 
00045         geom::LineSegment *overlapSeg1;
00046 
00047         geom::LineSegment *overlapSeg2;
00048 
00049 public:
00050 
00051         MonotoneChainOverlapAction();
00052 
00053         virtual ~MonotoneChainOverlapAction();
00054 
00061         virtual void overlap(MonotoneChain *mc1, int start1,
00062                         MonotoneChain *mc2, int start2);
00063 
00070         virtual void overlap(geom::LineSegment* /*newSeg1*/,
00071                         geom::LineSegment* /*newSeg2*/)
00072         {}
00073 
00074         // these envelopes are used during the MonotoneChain search process
00075         geom::Envelope *tempEnv1;
00076         geom::Envelope *tempEnv2;
00077 };
00078 
00079 } // namespace geos::index::chain
00080 } // namespace geos::index
00081 } // namespace geos
00082 
00083 #endif // GEOS_IDX_CHAIN_MONOTONECHAINOVERLAPACTION_H
00084 
00085 /**********************************************************************
00086  * $Log$
00087  * Revision 1.1  2006/03/22 18:12:31  strk
00088  * indexChain.h header split.
00089  *
00090  **********************************************************************/
00091 

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