# MonotoneChainSelectAction.h

    00001 /**********************************************************************
    00002  * $Id: MonotoneChainSelectAction.h 1820 2006-09-06 16:54:23Z 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_MONOTONECHAINSELECTACTION_H
    00017 #define GEOS_IDX_CHAIN_MONOTONECHAINSELECTACTION_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
    00043 class MonotoneChainSelectAction {
    00044
    00045 protected:
    00046
    00047         geom::LineSegment* selectedSegment;
    00048
    00049 public:
    00050
    00051         MonotoneChainSelectAction();
    00052
    00053         virtual ~MonotoneChainSelectAction();
    00054
    00056         virtual void select(MonotoneChain& mc, unsigned int start);
    00057
    00063         virtual void select(geom::LineSegment* newSeg)=0;
    00064
    00065         // these envelopes are used during the MonotoneChain search process
    00066         geom::Envelope* tempEnv1;
    00067 };
    00068
    00069
    00070 } // namespace geos::index::chain
    00071 } // namespace geos::index
    00072 } // namespace geos
    00073
    00074 #endif // GEOS_IDX_CHAIN_MONOTONECHAINSELECTACTION_H
    00075
    00076 /**********************************************************************
    00077  * $Log$
    00078  * Revision 1.1  2006/03/22 18:12:31  strk
    00079  * indexChain.h header split.
    00080  *
    00081  **********************************************************************/
    00082