/usr/include/gdal/cpl_quad_tree.h is in libgdal-dev 2.2.3+dfsg-2.
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* $Id: cpl_quad_tree.h 34931 2016-08-05 17:13:05Z rouault $
*
* Project: CPL - Common Portability Library
* Purpose: Implementation of quadtree building and searching functions.
* Derived from shapelib and mapserver implementations
* Author: Frank Warmerdam, warmerdam@pobox.com
* Even Rouault, <even dot rouault at mines dash paris dot org>
*
******************************************************************************
* Copyright (c) 1999-2008, Frank Warmerdam
* Copyright (c) 2008-2014, Even Rouault <even dot rouault at mines-paris dot org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#ifndef CPL_QUAD_TREE_H_INCLUDED
#define CPL_QUAD_TREE_H_INCLUDED
#include "cpl_port.h"
/**
* \file cpl_quad_tree.h
*
* Quad tree implementation.
*
* A quadtree is a tree data structure in which each internal node
* has up to four children. Quadtrees are most often used to partition
* a two dimensional space by recursively subdividing it into four
* quadrants or regions
*/
CPL_C_START
/* Types */
/** Describe a rectangle */
typedef struct {
double minx; /**< Minimum x */
double miny; /**< Minimum y */
double maxx; /**< Maximum x */
double maxy; /**< Maximum y */
} CPLRectObj;
/** Opaque type for a quad tree */
typedef struct _CPLQuadTree CPLQuadTree;
/** CPLQuadTreeGetBoundsFunc */
typedef void (*CPLQuadTreeGetBoundsFunc)(const void* hFeature, CPLRectObj* pBounds);
/** CPLQuadTreeForeachFunc */
typedef int (*CPLQuadTreeForeachFunc)(void* pElt, void* pUserData);
/** CPLQuadTreeDumpFeatureFunc */
typedef void (*CPLQuadTreeDumpFeatureFunc)(const void* hFeature, int nIndentLevel, void* pUserData);
/* Functions */
CPLQuadTree CPL_DLL *CPLQuadTreeCreate(const CPLRectObj* pGlobalBounds,
CPLQuadTreeGetBoundsFunc pfnGetBounds);
void CPL_DLL CPLQuadTreeDestroy(CPLQuadTree *hQuadtree);
void CPL_DLL CPLQuadTreeSetBucketCapacity(CPLQuadTree *hQuadtree,
int nBucketCapacity);
int CPL_DLL CPLQuadTreeGetAdvisedMaxDepth(int nExpectedFeatures);
void CPL_DLL CPLQuadTreeSetMaxDepth(CPLQuadTree *hQuadtree,
int nMaxDepth);
void CPL_DLL CPLQuadTreeInsert(CPLQuadTree *hQuadtree,
void* hFeature);
void CPL_DLL CPLQuadTreeInsertWithBounds(CPLQuadTree *hQuadtree,
void* hFeature,
const CPLRectObj* psBounds);
void CPL_DLL **CPLQuadTreeSearch(const CPLQuadTree *hQuadtree,
const CPLRectObj* pAoi,
int* pnFeatureCount);
void CPL_DLL CPLQuadTreeForeach(const CPLQuadTree *hQuadtree,
CPLQuadTreeForeachFunc pfnForeach,
void* pUserData);
void CPL_DLL CPLQuadTreeDump(const CPLQuadTree *hQuadtree,
CPLQuadTreeDumpFeatureFunc pfnDumpFeatureFunc,
void* pUserData);
void CPL_DLL CPLQuadTreeGetStats(const CPLQuadTree *hQuadtree,
int* pnFeatureCount,
int* pnNodeCount,
int* pnMaxDepth,
int* pnMaxBucketCapacity);
CPL_C_END
#endif
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