GEOS  3.14.0dev
MonotoneChainSelectAction.h
1 /**********************************************************************
2  *
3  * GEOS - Geometry Engine Open Source
4  * http://geos.osgeo.org
5  *
6  * Copyright (C) 2001-2002 Vivid Solutions Inc.
7  *
8  * This is free software; you can redistribute and/or modify it under
9  * the terms of the GNU Lesser General Public Licence as published
10  * by the Free Software Foundation.
11  * See the COPYING file for more information.
12  *
13  **********************************************************************
14  *
15  * Last port: index/chain/MonotoneChainSelectAction.java rev. 1.6 (JTS-1.10)
16  *
17  **********************************************************************/
18 
19 #pragma once
20 
21 #include <geos/export.h>
22 #include <geos/geom/LineSegment.h> // composition
23 #include <geos/geom/Envelope.h> // composition
24 
25 
26 // Forward declarations
27 namespace geos {
28 namespace index {
29 namespace chain {
30 class MonotoneChain;
31 }
32 }
33 }
34 
35 namespace geos {
36 namespace index { // geos::index
37 namespace chain { // geos::index::chain
38 
44 class GEOS_DLL MonotoneChainSelectAction {
45 
46 protected:
47 
48  geom::LineSegment selectedSegment;
49 
50 public:
51 
53 
54  virtual
56 
58  virtual void select(const MonotoneChain& mc, std::size_t start);
59 
66  virtual void select(const geom::LineSegment& seg) = 0;
67 
68 };
69 
70 
71 } // namespace geos::index::chain
72 } // namespace geos::index
73 } // namespace geos
74 
Definition: LineSegment.h:61
Definition: MonotoneChainSelectAction.h:44
virtual void select(const geom::LineSegment &seg)=0
virtual void select(const MonotoneChain &mc, std::size_t start)
This function can be overridden if the original chain is needed.
Monotone Chains are a way of partitioning the segments of a linestring to allow for fast searching of...
Definition: index/chain/MonotoneChain.h:85
Basic namespace for all GEOS functionalities.
Definition: Angle.h:25