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cpl_quad_tree.h
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1/**********************************************************************
2 * $Id: cpl_quad_tree.h fcf615cbf6b2e03db17171af0ebba6da4b4a562d 2016-08-05 17:13:05Z Even Rouault $
3 *
4 * Project: CPL - Common Portability Library
5 * Purpose: Implementation of quadtree building and searching functions.
6 * Derived from shapelib and mapserver implementations
7 * Author: Frank Warmerdam, warmerdam@pobox.com
8 * Even Rouault, <even dot rouault at mines dash paris dot org>
9 *
10 ******************************************************************************
11 * Copyright (c) 1999-2008, Frank Warmerdam
12 * Copyright (c) 2008-2014, Even Rouault <even dot rouault at mines-paris dot org>
13 *
14 * Permission is hereby granted, free of charge, to any person obtaining a
15 * copy of this software and associated documentation files (the "Software"),
16 * to deal in the Software without restriction, including without limitation
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18 * and/or sell copies of the Software, and to permit persons to whom the
19 * Software is furnished to do so, subject to the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be included
22 * in all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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31 ****************************************************************************/
32
33#ifndef CPL_QUAD_TREE_H_INCLUDED
34#define CPL_QUAD_TREE_H_INCLUDED
35
36#include "cpl_port.h"
37
50
51/* Types */
52
54typedef struct {
55 double minx;
56 double miny;
57 double maxx;
58 double maxy;
60
62typedef struct _CPLQuadTree CPLQuadTree;
63
65typedef void (*CPLQuadTreeGetBoundsFunc)(const void* hFeature, CPLRectObj* pBounds);
67typedef int (*CPLQuadTreeForeachFunc)(void* pElt, void* pUserData);
69typedef void (*CPLQuadTreeDumpFeatureFunc)(const void* hFeature, int nIndentLevel, void* pUserData);
70
71/* Functions */
72
73CPLQuadTree CPL_DLL *CPLQuadTreeCreate(const CPLRectObj* pGlobalBounds,
74 CPLQuadTreeGetBoundsFunc pfnGetBounds);
75void CPL_DLL CPLQuadTreeDestroy(CPLQuadTree *hQuadtree);
76
77void CPL_DLL CPLQuadTreeSetBucketCapacity(CPLQuadTree *hQuadtree,
78 int nBucketCapacity);
79int CPL_DLL CPLQuadTreeGetAdvisedMaxDepth(int nExpectedFeatures);
80void CPL_DLL CPLQuadTreeSetMaxDepth(CPLQuadTree *hQuadtree,
81 int nMaxDepth);
82
83void CPL_DLL CPLQuadTreeInsert(CPLQuadTree *hQuadtree,
84 void* hFeature);
85void CPL_DLL CPLQuadTreeInsertWithBounds(CPLQuadTree *hQuadtree,
86 void* hFeature,
87 const CPLRectObj* psBounds);
88
89void CPL_DLL **CPLQuadTreeSearch(const CPLQuadTree *hQuadtree,
90 const CPLRectObj* pAoi,
91 int* pnFeatureCount);
92
93void CPL_DLL CPLQuadTreeForeach(const CPLQuadTree *hQuadtree,
94 CPLQuadTreeForeachFunc pfnForeach,
95 void* pUserData);
96
97void CPL_DLL CPLQuadTreeDump(const CPLQuadTree *hQuadtree,
98 CPLQuadTreeDumpFeatureFunc pfnDumpFeatureFunc,
99 void* pUserData);
100void CPL_DLL CPLQuadTreeGetStats(const CPLQuadTree *hQuadtree,
101 int* pnFeatureCount,
102 int* pnNodeCount,
103 int* pnMaxDepth,
104 int* pnMaxBucketCapacity);
105
107
108#endif
Core portability definitions for CPL.
#define CPL_C_END
Macro to end a block of C symbols.
Definition: cpl_port.h:339
#define CPL_C_START
Macro to start a block of C symbols.
Definition: cpl_port.h:337
CPLQuadTree * CPLQuadTreeCreate(const CPLRectObj *pGlobalBounds, CPLQuadTreeGetBoundsFunc pfnGetBounds)
Create a new quadtree.
Definition: cpl_quad_tree.cpp:149
void CPLQuadTreeInsert(CPLQuadTree *hQuadtree, void *hFeature)
Insert a feature into a quadtree.
Definition: cpl_quad_tree.cpp:271
int(* CPLQuadTreeForeachFunc)(void *pElt, void *pUserData)
CPLQuadTreeForeachFunc.
Definition: cpl_quad_tree.h:67
void ** CPLQuadTreeSearch(const CPLQuadTree *hQuadtree, const CPLRectObj *pAoi, int *pnFeatureCount)
Returns all the elements inserted whose bounding box intersects the provided area of interest.
Definition: cpl_quad_tree.cpp:686
void(* CPLQuadTreeGetBoundsFunc)(const void *hFeature, CPLRectObj *pBounds)
CPLQuadTreeGetBoundsFunc.
Definition: cpl_quad_tree.h:65
void CPLQuadTreeGetStats(const CPLQuadTree *hQuadtree, int *pnFeatureCount, int *pnNodeCount, int *pnMaxDepth, int *pnMaxBucketCapacity)
Get stats.
Definition: cpl_quad_tree.cpp:852
void CPLQuadTreeDump(const CPLQuadTree *hQuadtree, CPLQuadTreeDumpFeatureFunc pfnDumpFeatureFunc, void *pUserData)
Dump quad tree.
Definition: cpl_quad_tree.cpp:816
void CPLQuadTreeForeach(const CPLQuadTree *hQuadtree, CPLQuadTreeForeachFunc pfnForeach, void *pUserData)
Walk through the quadtree and runs the provided function on all the elements.
Definition: cpl_quad_tree.cpp:751
void CPLQuadTreeSetBucketCapacity(CPLQuadTree *hQuadtree, int nBucketCapacity)
Set the maximum capacity of a node of a quadtree.
Definition: cpl_quad_tree.cpp:254
void CPLQuadTreeSetMaxDepth(CPLQuadTree *hQuadtree, int nMaxDepth)
Set the maximum depth of a quadtree.
Definition: cpl_quad_tree.cpp:236
void CPLQuadTreeDestroy(CPLQuadTree *hQuadtree)
Destroy a quadtree.
Definition: cpl_quad_tree.cpp:335
struct _CPLQuadTree CPLQuadTree
Opaque type for a quad tree.
Definition: cpl_quad_tree.h:62
void CPLQuadTreeInsertWithBounds(CPLQuadTree *hQuadtree, void *hFeature, const CPLRectObj *psBounds)
Insert a feature into a quadtree.
Definition: cpl_quad_tree.cpp:296
void(* CPLQuadTreeDumpFeatureFunc)(const void *hFeature, int nIndentLevel, void *pUserData)
CPLQuadTreeDumpFeatureFunc.
Definition: cpl_quad_tree.h:69
int CPLQuadTreeGetAdvisedMaxDepth(int nExpectedFeatures)
Returns the optimal depth of a quadtree to hold nExpectedFeatures.
Definition: cpl_quad_tree.cpp:188
Describe a rectangle.
Definition: cpl_quad_tree.h:54
double minx
Minimum x.
Definition: cpl_quad_tree.h:55
double maxy
Maximum y.
Definition: cpl_quad_tree.h:58
double miny
Minimum y.
Definition: cpl_quad_tree.h:56
double maxx
Maximum x.
Definition: cpl_quad_tree.h:57

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