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# cpl_quad_tree.h

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    00001 /**********************************************************************
    00002  * $Id: cpl_quad_tree.h 15067 2008-07-28 22:08:58Z rouault $
    00003  *
    00004  * Project:  CPL - Common Portability Library
    00005  * Purpose:  Implementation of quadtree building and searching functions.
    00006  *           Derived from shapelib and mapserver implementations
    00007  * Author:   Frank Warmerdam, warmerdam@pobox.com
    00008  *           Even Rouault, <even dot rouault at mines dash paris dot org>
    00009  *
    00010  ******************************************************************************
    00011  * Copyright (c) 1999-2008, Frank Warmerdam
    00012  *
    00013  * Permission is hereby granted, free of charge, to any person obtaining a
    00014  * copy of this software and associated documentation files (the "Software"),
    00015  * to deal in the Software without restriction, including without limitation
    00016  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
    00017  * and/or sell copies of the Software, and to permit persons to whom the
    00018  * Software is furnished to do so, subject to the following conditions:
    00019  *
    00020  * The above copyright notice and this permission notice shall be included
    00021  * in all copies or substantial portions of the Software.
    00022  *
    00023  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00024  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00025  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
    00026  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00027  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    00028  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    00029  * DEALINGS IN THE SOFTWARE.
    00030  ****************************************************************************/
    00031
    00032 #ifndef _CPL_QUAD_TREE_H_INCLUDED
    00033 #define _CPL_QUAD_TREE_H_INCLUDED
    00034
    00035 #include "cpl_port.h"
    00036
    00048 CPL_C_START
    00049
    00050 /* Types */
    00051
    00052 typedef struct {
    00053   double minx, miny, maxx, maxy;
    00054 } CPLRectObj;
    00055
    00056 typedef struct _CPLQuadTree CPLQuadTree;
    00057
    00058 typedef void         (*CPLQuadTreeGetBoundsFunc)(const void* hFeature, CPLRectObj* pBounds);
    00059 typedef int          (*CPLQuadTreeForeachFunc)(void* pElt, void* pUserData);
    00060 typedef void         (*CPLQuadTreeDumpFeatureFunc)(const void* hFeature, int nIndentLevel, void* pUserData);
    00061
    00062 /* Functions */
    00063
    00064 CPLQuadTree CPL_DLL  *CPLQuadTreeCreate(const CPLRectObj* pGlobalBounds,
    00065                                         CPLQuadTreeGetBoundsFunc pfnGetBounds);
    00066 void        CPL_DLL   CPLQuadTreeDestroy(CPLQuadTree *hQuadtree);
    00067
    00068 void        CPL_DLL   CPLQuadTreeSetBucketCapacity(CPLQuadTree *hQuadtree,
    00069                                                    int nBucketCapacity);
    00070 int         CPL_DLL   CPLQuadTreeGetAdvisedMaxDepth(int nExpectedFeatures);
    00071 void        CPL_DLL   CPLQuadTreeSetMaxDepth(CPLQuadTree *hQuadtree,
    00072                                              int nMaxDepth);
    00073
    00074 void        CPL_DLL   CPLQuadTreeInsert(CPLQuadTree *hQuadtree,
    00075                                         void* hFeature);
    00076
    00077 void        CPL_DLL **CPLQuadTreeSearch(const CPLQuadTree *hQuadtree,
    00078                                         const CPLRectObj* pAoi,
    00079                                         int* pnFeatureCount);
    00080
    00081 void        CPL_DLL   CPLQuadTreeForeach(const CPLQuadTree *hQuadtree,
    00082                                          CPLQuadTreeForeachFunc pfnForeach,
    00083                                          void* pUserData);
    00084
    00085 void        CPL_DLL   CPLQuadTreeDump(const CPLQuadTree *hQuadtree,
    00086                                       CPLQuadTreeDumpFeatureFunc pfnDumpFeatureFunc,
    00087                                       void* pUserData);
    00088 void        CPL_DLL   CPLQuadTreeGetStats(const CPLQuadTree *hQuadtree,
    00089                                           int* pnFeatureCount,
    00090                                           int* pnNodeCount,
    00091                                           int* pnMaxDepth,
    00092                                           int* pnMaxBucketCapacity);
    00093
    00094 CPL_C_END
    00095
    00096 #endif

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