GEOS  3.3.3
Quadtree.h
1 /**********************************************************************
2  * $Id: Quadtree.h 3255 2011-03-01 17:56:10Z mloskot $
3  *
4  * GEOS - Geometry Engine Open Source
5  * http://geos.refractions.net
6  *
7  * Copyright (C) 2006 Refractions Research 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/quadtree/Quadtree.java rev. 1.16 (JTS-1.10)
17  *
18  **********************************************************************/
19 
20 #ifndef GEOS_IDX_QUADTREE_QUADTREE_H
21 #define GEOS_IDX_QUADTREE_QUADTREE_H
22 
23 #include <geos/export.h>
24 #include <geos/index/SpatialIndex.h> // for inheritance
25 #include <geos/index/quadtree/Root.h> // for composition
26 
27 #include <vector>
28 #include <string>
29 
30 #ifdef _MSC_VER
31 #pragma warning(push)
32 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
33 #endif
34 
35 // Forward declarations
36 namespace geos {
37  namespace geom {
38  class Envelope;
39  }
40  namespace index {
41  namespace quadtree {
42  // class Root;
43  }
44  }
45 }
46 
47 namespace geos {
48 namespace index { // geos::index
49 namespace quadtree { // geos::index::quadtree
50 
73 class GEOS_DLL Quadtree: public SpatialIndex {
74 
75 private:
76 
77  std::vector<geom::Envelope *> newEnvelopes;
78 
79  void collectStats(const geom::Envelope& itemEnv);
80 
81  Root root;
82 
94  double minExtent;
95 
96 public:
104  static geom::Envelope* ensureExtent(const geom::Envelope *itemEnv,
105  double minExtent);
106 
112  :
113  root(),
114  minExtent(1.0)
115  {}
116 
117  ~Quadtree();
118 
120  int depth();
121 
123  int size();
124 
125  void insert(const geom::Envelope *itemEnv, void *item);
126 
144  void query(const geom::Envelope *searchEnv, std::vector<void*>& ret);
145 
146 
163  void query(const geom::Envelope *searchEnv, ItemVisitor& visitor)
164  {
165  /*
166  * the items that are matched are the items in quads which
167  * overlap the search envelope
168  */
169  root.visit(searchEnv, visitor);
170  }
171 
179  bool remove(const geom::Envelope* itemEnv, void* item);
180 
182  std::vector<void*>* queryAll();
183 
184  std::string toString() const;
185 
186 };
187 
188 } // namespace geos::index::quadtree
189 } // namespace geos::index
190 } // namespace geos
191 
192 #ifdef _MSC_VER
193 #pragma warning(pop)
194 #endif
195 
196 #endif // GEOS_IDX_QUADTREE_QUADTREE_H
197 
198 /**********************************************************************
199  * $Log$
200  * Revision 1.2 2006/04/03 08:29:30 strk
201  * Added port info, cleaned up log message, minor assertion checking.
202  *
203  * Revision 1.1 2006/03/22 12:22:50 strk
204  * indexQuadtree.h split
205  *
206  **********************************************************************/
207