function MakeTile($image, $x, $y, $zoom)
{
$proj = new Mercator($zoom, G_TILE_SIZE);
$lonL = $proj->Lon($x * G_TILE_SIZE);
$lonR = $proj->Lon(($x + 1) * G_TILE_SIZE);
$lonBound[0] = $lonL;
$nextBound = floor($lonL / SRTM_TILE_SIZE_DEG) * SRTM_TILE_SIZE_DEG + SRTM_TILE_SIZE_DEG;
for ($i = 1;; $i++) {
if ($nextBound >= $lonR) {
break;
}
$lonBound[$i] = $nextBound;
$nextBound += SRTM_TILE_SIZE_DEG;
}
$lonBound[$i] = $lonR;
$latT = $proj->Lat($y * G_TILE_SIZE);
$latB = $proj->Lat(($y + 1) * G_TILE_SIZE);
$latBound[0] = $latB;
$nextBound = floor($latB / SRTM_TILE_SIZE_DEG) * SRTM_TILE_SIZE_DEG + SRTM_TILE_SIZE_DEG;
for ($j = 1;; $j++) {
if ($nextBound >= $latT) {
break;
}
$latBound[$j] = $nextBound;
$nextBound += SRTM_TILE_SIZE_DEG;
}
$latBound[$j] = $latT;
for ($latIdx = 0; $latIdx < $j; $latIdx++) {
for ($lonIdx = 0; $lonIdx < $i; $lonIdx++) {
MakeBlock($image, $lonBound[$lonIdx], $lonBound[$lonIdx + 1], $latBound[$latIdx], $latBound[$latIdx + 1], $proj);
}
}
}
$result = mysql_query($query) or die('Query error: ' . mysql_error());
if (mysql_num_rows($result) == 1) {
$position = mysql_fetch_object($result);
// Center psotion
$lat = isset($_GET['lat']) ? floatval($_GET['lat']) : $position->latitude;
$lon = isset($_GET['lon']) ? floatval($_GET['lon']) : $position->longitude;
$img = sprintf("Date: {$position->time}<br/>\n" . "Lieu: " . getNearbyPlace($position->latitude, $position->longitude) . " [" . $position->latitude . " - " . $position->longitude . "]<br/>\n" . "h: " . $position->elevation . "m (" . max(0, $position->elevation - GetElevGnd($position->latitude, $position->longitude)) . "m/sol)<br/>\n" . "<img src='http://maps.google.com/staticmap?zoom=%d&size={$w}x{$h}&" . "center={$lat},{$lon}&" . "maptype=mobile&markers={$position->latitude},{$position->longitude},smallgreen&" . "key=ABQIAAAAJPvmQMZVrrV3inIwT2t4RBQf-JSUIEMNUNF63gcoYgskNGvaZRQmUvzGcFUdj4nlylxP8SK4sRKYsg'></img>\n", $zoom);
$zoomIn = $zoomOut = $up = $down = $left = $right = "<a href='http://" . $_SERVER['SERVER_NAME'] . $_SERVER['PHP_SELF'] . "?id=" . $_GET['id'];
$zoomIn .= "&zoom=" . ($zoom + 1) . "&lat={$lat}&lon={$lon}'>+</a>\n";
$zoomOut .= "&zoom=" . ($zoom - 1) . "&lat={$lat}&lon={$lon}'>-</a>\n";
$projection = new Mercator($zoom, 256);
$latUp = $latDown = $projection->Y($lat);
$lonLeft = $lonRight = $projection->X($lon);
$latUp = $projection->Lat($latUp - $h / 2);
$latDown = $projection->Lat($latDown + $h / 2);
$lonLeft = $projection->Lon($lonLeft - $w / 2);
$lonRight = $projection->Lon($lonRight + $w / 2);
$up .= "&zoom={$zoom}&lat={$latUp}&lon={$lon}'>^</a>\n";
$down .= "&zoom={$zoom}&lat={$latDown}&lon={$lon}'>V</a>\n";
$left .= "&zoom={$zoom}&lat={$lat}&lon={$lonLeft}'><</a>\n";
$right .= "&zoom={$zoom}&lat={$lat}&lon={$lonRight}'>></a>\n";
echo "{$img}<br/>{$zoomIn} | {$zoomOut} | {$up} | {$down} | {$left} | {$right}";
} else {
echo "No map available";
}
mysql_close($link);
} else {
?>
<form action="<?php
echo $_SERVER['PHP_SELF'];
?>
