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//*
//* main.cpp
//* NearTree
//*
//* Copyright 2001, 2008 Larry Andrews. All rights reserved
//* Revised 12 Dec 2008 for sourceforge release -- H. J. Bernstein
//**********************************************************************
//* *
//* YOU MAY REDISTRIBUTE NearTree UNDER THE TERMS OF THE LGPL *
//* *
//**********************************************************************/
//************************* LGPL NOTICES *******************************
//* *
//* This library is free software; you can redistribute it and/or *
//* modify it under the terms of the GNU Lesser General Public *
//* License as published by the Free Software Foundation; either *
//* version 2.1 of the License, or (at your option) any later version. *
//* *
//* This library is distributed in the hope that it will be useful, *
//* but WITHOUT ANY WARRANTY; without even the implied warranty of *
//* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
//* Lesser General Public License for more details. *
//* *
//* You should have received a copy of the GNU Lesser General Public *
//* License along with this library; if not, write to the Free *
//* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
//* MA 02110-1301 USA *
//* *
//**********************************************************************/
#include <stdio.h>
#include <iostream>
#include <stdlib.h>
#include <limits.h>
#include <time.h>
#include <vector>
#include <float.h>
#include "TNear.h"
#include "v.h"
#ifndef USE_LOCAL_HEADERS
#include <rhrand.h>
#else
#include "rhrand.h"
#endif
RHrand rhr;
int main ( int argc, char* argv[] )
{
CNearTree <v> vTree;
v vBest = DBL_MAX;
long i,j,k;
const long lMaxRow = 10;
std::vector <v> vReturn;
if (argc <= 1) {
rhr.srandom( (unsigned int)time( NULL ) ); /* use the current time to seed the
random number generator */
} else {
rhr.srandom((unsigned int)atoi(argv[1]));
}
vTree.SetFlags(CNearTree <v>::NTF_ForceFlip,CNearTree <v>::NTF_ForceFlip|CNearTree <v>::NTF_NoFlip);
//---------------------------------------
// build up a library of points to search among
//---------------------------------------
for ( k=-1; k<=lMaxRow; k++ )
{
for ( j=-1; j<=lMaxRow; j++)
{
for ( i= lMaxRow ; i>=-1; i-- )
{
vTree.insert( v((double)i, (double)j, (double)k) );
} // for i
} // for j
} // for k
std::cout
<< std::endl;
//---------------------------------------
// Done building the tree; now try a retrieval
//---------------------------------------
double dRad = 0.6;
long lReturn;
for ( i=0; i<10; i++ )
{
dRad += 0.05;
double x = rhr.urand() * double( lMaxRow ) ;
double y = x;
double z = ( 1.25 * double(lMaxRow) - 1.5 * x );
v vSearch( x, 0.5*(x+y), z );
std::cout
<< "Trial " << i << " from probe point " << vSearch << std::endl;
// find the nearest point to vSearch
if ( vTree.NearestNeighbor( dRad, vBest, vSearch ) )
{
std::cout
<< " Closest distance " << (double) ( vSearch - vBest ) << " to " << vBest << std::endl;
}
else
{
std::cout
<< " ***** nothing within " << dRad << " of " << vSearch << std::endl;
}
// find the farthest point from vSearch
if ( vTree.FarthestNeighbor ( vBest, vSearch ) )
{
std::cout
<< " Farthest distance " << (double) ( vSearch - vBest ) << " to " << vBest << std::endl;
}
else
{
std::cout << " No Farthest object found" << std::endl;
}
// search for all points within a "sphere" out to radius dRad
if ( ( lReturn = vTree.FindInSphere( dRad, vReturn, vSearch )) > 0 )
{
std::cout << " Returned " << lReturn << " items within " << dRad << " of "<< vSearch << std::endl;
std::sort(vReturn.begin( ),vReturn.end( ));
std::vector <v>::iterator iv;
for ( iv=vReturn.begin( ); iv<vReturn.end( ); iv++ )
{
std::cout << "\t" << *iv << std::endl;
}
}
std::cout << " -------------------------------------------------------------"<<std::endl;
} // for i
return ( EXIT_SUCCESS );
}
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