GEOS  3.3.3
MonotoneChainOverlapAction.h
1 /**********************************************************************
2  * $Id: MonotoneChainOverlapAction.h 2961 2010-03-29 12:17:37Z mloskot $
3  *
4  * GEOS - Geometry Engine Open Source
5  * http://geos.refractions.net
6  *
7  * Copyright (C) 2001-2002 Vivid Solutions Inc.
8  *
9  * This is free software; you can redistribute and/or modify it under
10  * the terms of the GNU Lesser General Public Licence as published
11  * by the Free Software Foundation.
12  * See the COPYING file for more information.
13  *
14  **********************************************************************
15  *
16  * Last port: index/chain/MonotoneChainOverlapAction.java rev. 1.6 (JTS-1.10)
17  *
18  **********************************************************************/
19 
20 #ifndef GEOS_IDX_CHAIN_MONOTONECHAINOVERLAPACTION_H
21 #define GEOS_IDX_CHAIN_MONOTONECHAINOVERLAPACTION_H
22 
23 #include <geos/export.h>
24 #include <geos/geom/LineSegment.h>
25 #include <geos/geom/Envelope.h>
26 
27 
28 // Forward declarations
29 namespace geos {
30  namespace index {
31  namespace chain {
32  class MonotoneChain;
33  }
34  }
35 }
36 
37 namespace geos {
38 namespace index { // geos::index
39 namespace chain { // geos::index::chain
40 
46 
47 protected:
48 
49  geom::LineSegment overlapSeg1;
50 
51  geom::LineSegment overlapSeg2;
52 
53 public:
54 
56 
57  virtual ~MonotoneChainOverlapAction() {};
58 
67  virtual void overlap(MonotoneChain& mc1, std::size_t start1,
68  MonotoneChain& mc2, std::size_t start2);
69 
76  virtual void overlap(const geom::LineSegment& /*seg1*/,
77  const geom::LineSegment& /*seg2*/)
78  {}
79 
80  // these envelopes are used during the MonotoneChain search process
81  geom::Envelope tempEnv1;
82  geom::Envelope tempEnv2;
83 };
84 
85 } // namespace geos::index::chain
86 } // namespace geos::index
87 } // namespace geos
88 
89 #endif // GEOS_IDX_CHAIN_MONOTONECHAINOVERLAPACTION_H
90 
91 /**********************************************************************
92  * $Log$
93  * Revision 1.1 2006/03/22 18:12:31 strk
94  * indexChain.h header split.
95  *
96  **********************************************************************/
97