GEOS
3.4.2
|
00001 /********************************************************************** 00002 * 00003 * GEOS - Geometry Engine Open Source 00004 * http://geos.osgeo.org 00005 * 00006 * Copyright (C) 2006 Refractions Research Inc. 00007 * 00008 * This is free software; you can redistribute and/or modify it under 00009 * the terms of the GNU Lesser General Public Licence as published 00010 * by the Free Software Foundation. 00011 * See the COPYING file for more information. 00012 * 00013 ********************************************************************** 00014 * 00015 * Last port: index/strtree/STRtree.java rev. 1.11 00016 * 00017 **********************************************************************/ 00018 00019 #ifndef GEOS_INDEX_STRTREE_STRTREE_H 00020 #define GEOS_INDEX_STRTREE_STRTREE_H 00021 00022 #include <geos/export.h> 00023 #include <geos/index/strtree/AbstractSTRtree.h> // for inheritance 00024 #include <geos/index/SpatialIndex.h> // for inheritance 00025 #include <geos/geom/Envelope.h> // for inlines 00026 00027 #include <vector> 00028 00029 #ifdef _MSC_VER 00030 #pragma warning(push) 00031 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class 00032 #endif 00033 00034 // Forward declarations 00035 namespace geos { 00036 namespace index { 00037 namespace strtree { 00038 class Boundable; 00039 } 00040 } 00041 } 00042 00043 namespace geos { 00044 namespace index { // geos::index 00045 namespace strtree { // geos::index::strtree 00046 00062 class GEOS_DLL STRtree: public AbstractSTRtree, public SpatialIndex 00063 { 00064 using AbstractSTRtree::insert; 00065 using AbstractSTRtree::query; 00066 00067 private: 00068 class GEOS_DLL STRIntersectsOp: public AbstractSTRtree::IntersectsOp { 00069 public: 00070 bool intersects(const void* aBounds, const void* bBounds); 00071 }; 00072 00080 std::auto_ptr<BoundableList> createParentBoundables(BoundableList* childBoundables, int newLevel); 00081 00082 std::auto_ptr<BoundableList> createParentBoundablesFromVerticalSlices(std::vector<BoundableList*>* verticalSlices, int newLevel); 00083 00084 STRIntersectsOp intersectsOp; 00085 00086 std::auto_ptr<BoundableList> sortBoundables(const BoundableList* input); 00087 00088 std::auto_ptr<BoundableList> createParentBoundablesFromVerticalSlice( 00089 BoundableList* childBoundables, 00090 int newLevel); 00091 00097 std::vector<BoundableList*>* verticalSlices( 00098 BoundableList* childBoundables, 00099 size_t sliceCount); 00100 00101 00102 protected: 00103 00104 AbstractNode* createNode(int level); 00105 00106 IntersectsOp* getIntersectsOp() { 00107 return &intersectsOp; 00108 } 00109 00110 public: 00111 00112 ~STRtree(); 00113 00118 STRtree(std::size_t nodeCapacity=10); 00119 00120 void insert(const geom::Envelope *itemEnv,void* item); 00121 00122 //static double centreX(const geom::Envelope *e); 00123 00124 static double avg(double a, double b) { 00125 return (a + b) / 2.0; 00126 } 00127 00128 static double centreY(const geom::Envelope *e) { 00129 return STRtree::avg(e->getMinY(), e->getMaxY()); 00130 } 00131 00132 void query(const geom::Envelope *searchEnv, std::vector<void*>& matches) { 00133 AbstractSTRtree::query(searchEnv, matches); 00134 } 00135 00136 void query(const geom::Envelope *searchEnv, ItemVisitor& visitor) { 00137 return AbstractSTRtree::query(searchEnv, visitor); 00138 } 00139 00140 bool remove(const geom::Envelope *itemEnv, void* item) { 00141 return AbstractSTRtree::remove(itemEnv, item); 00142 } 00143 }; 00144 00145 } // namespace geos::index::strtree 00146 } // namespace geos::index 00147 } // namespace geos 00148 00149 00150 #ifdef _MSC_VER 00151 #pragma warning(pop) 00152 #endif 00153 00154 #endif // GEOS_INDEX_STRTREE_STRTREE_H