PHP Classes
elePHPant
Icontem

File: quadtree.php

Recommend this page to a friend!
Stumble It! Stumble It! Bookmark in del.icio.us Bookmark in del.icio.us
  Classes of Dan Thanh  >  Hilbert curve  >  quadtree.php  >  Download  
File: quadtree.php
Role: Example script
Content type: text/plain
Description: compute google maps quadtree
Class: Hilbert curve
Generate points of an Hilbert curve
Author: By
Last change: beautify code
Date: 4 years ago
Size: 3,191 bytes
 

Contents

Class file image Download
<?php
/***************************************************************
* Hilbert curve
* Version 0.2
* Copyright (c) 2010 Chi Hoang (info@chihoang.de)
* All rights reserved
*
* http://www.chihoang.de
*
* 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:
*
* Free for non-commercial use
*
* 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.
*
***************************************************************/
require_once("hilbert.php");
require_once(
"GlobalMapTiles.php");

define('MAXZOOM', 21);

class
db {
    var
$connid;
    var
$erg;

    function
db ($host,$user,$passwort) {
        if(!
$this->connid = mysql_connect($host, $user, $passwort)) {
            echo
"Fehler beim Verbinden...";
        }
        return
$this->connid;
    }

    function
select_db($db) {
        if (!
mysql_select_db($db, $this->connid)) {
            echo
"Fehler beim Auswaehlen der DB...";
        }
    }

    function
sql ($sql) {
        if (!
$this->erg = mysql_query($sql, $this->connid)) {
            echo
"Fehler beim Senden der Abfrage...";
        }
        return
$this->erg;
    }
}

class
quadtree {

    function
loop() {
       
       
$tree = new hilbert();
       
$mercator = new GlobalMercator();

       
$connection = new db("localhost", "root", "typo3" );
       
$connection->select_db("amici");
       
       
$q = "SELECT uid, plz, laengengrad, breitengrad FROM tx_chhaendlersuche_plz";
       
       
$res = $connection->sql($q);
       
        while (
$row = mysql_fetch_assoc($res)) {
           
            list(
$lng, $lat) = array ($row['laengengrad'], $row['breitengrad']);

            list(
$mx, $my) = $mercator->LatLonToMeters($lat, $lng);
            list(
$tx, $ty) = $mercator->MetersToTile($mx, $my, MAXZOOM);
            list(
$tx, $ty) = array ($tx, ((1 << MAXZOOM) - 1) - $ty );
           
           
//~ $string = $mercator->LatLonToQuadTree($lat, $lng, MAXZOOM);
            //~ $string = $mercator->QuadTree($tx, $ty, MAXZOOM);
           
$string = $tree->point_to_quadtree( $tx, $ty, pow(2, 5) );
           
//~ $string = $tree->point_to_quadtree( $tx, $ty, 5, "moore" );
           
           
echo "$tx, $ty ".$row["uid"].": $string\n";
           
           
mysql_query("UPDATE tx_chhaendlersuche_plz SET quadtree=".$string." WHERE uid=".$row['uid']);
        }
    }
}

$main = new quadtree();
$main->loop();

?>