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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