kd_pr_search.h

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//----------------------------------------------------------------------
// File:                        kd_pr_search.h
// Programmer:          Sunil Arya and David Mount
// Description:         Priority kd-tree search
// Last modified:       01/04/05 (Version 1.0)
//----------------------------------------------------------------------
// Copyright (c) 1997-2005 University of Maryland and Sunil Arya and
// David Mount.  All Rights Reserved.
// 
// This software and related documentation is part of the Approximate
// Nearest Neighbor Library (ANN).  This software is provided under
// the provisions of the Lesser GNU Public License (LGPL).  See the
// file ../ReadMe.txt for further information.
// 
// The University of Maryland (U.M.) and the authors make no
// representations about the suitability or fitness of this software for
// any purpose.  It is provided "as is" without express or implied
// warranty.
//----------------------------------------------------------------------
// History:
//      Revision 0.1  03/04/98
//              Initial release
//----------------------------------------------------------------------

#ifndef ANN_kd_pr_search_H
#define ANN_kd_pr_search_H

#include "kd_tree.h"                                    // kd-tree declarations
#include "kd_util.h"                                    // kd-tree utilities
#include "pr_queue.h"                                   // priority queue declarations
#include "pr_queue_k.h"                                 // k-element priority queue

#include <ANN/ANNperf.h>                                // performance evaluation

//----------------------------------------------------------------------
//      Global variables
//              Active for the life of each call to Appx_Near_Neigh() or
//              Appx_k_Near_Neigh().
//----------------------------------------------------------------------

extern double                   ANNprEps;               // the error bound
extern int                              ANNprDim;               // dimension of space
extern ANNpoint                 ANNprQ;                 // query point
extern double                   ANNprMaxErr;    // max tolerable squared error
extern ANNpointArray    ANNprPts;               // the points
extern ANNpr_queue              *ANNprBoxPQ;    // priority queue for boxes
extern ANNmin_k                 *ANNprPointMK;  // set of k closest points

#endif