array('width' => 720, 'height' => 720),
// Number of pixels by which tiles overlap
'overlap' => array('x' => 70, 'y' => 70),
// Zoom level
'zoom_level' => 2,
// Start in the middle of the tile set, rather than the top-left corner
'ignore_tiles' => array('x' => 0, 'y' => 0),
// Image identifier (I= parameter on initial view page)
'image_id' => 'w013s000g001',
// Total number of tiles we're interested in
'tile_count' => array('x' => 3, 'y' => 2),
);
$options = sanitise_options( array_merge($default_options, $_GET) );
switch ( $_GET['action'] )
{
case 'image':
process_and_display_image($options);
break;
case 'source':
header('Content-type: text/plain');
readfile(__FILE__);
break;
default:
display_option_form($options);
}
function sanitise_options($raw_options)
{
return array(
'tile_size' => array(
'width' => intval($raw_options['tile_size']['width']),
'height' => intval($raw_options['tile_size']['height']),
),
'overlap' => array(
'x' => intval($raw_options['overlap']['x']),
'y' => intval($raw_options['overlap']['y'])
),
'zoom_level' => intval($raw_options['zoom_level']),
'ignore_tiles' => array(
'x' => intval($raw_options['ignore_tiles']['x']),
'y' => intval($raw_options['ignore_tiles']['y'])
),
'tile_count' => array(
'x' => intval($raw_options['tile_count']['x']),
'y' => intval($raw_options['tile_count']['y'])
),
'image_id' => preg_replace('/[^0-9A-Za-z]/', '', $raw_options['image_id']),
);
}
function display_option_form($options)
{
?>
Tiled image fetch and assembler
Script © Rowan Collins 2009, AKA IMSoP
View source.
This work is licensed under a Creative Commons Attribution 3.0 Unported License.
somefile.jpeg`)
header('Content-type: image/jpeg');
imagejpeg($output_image);
exit;
}
function create_image_url($image_id, $zoom_level, $x, $y)
{
// The parts of the URL we don't want to change
$url_base = 'http://www.emuseum.jp/map/map_img/';
// Note the "sprintf" to give leading zeros where necessary
return $url_base
. substr($image_id, 0, 4) . '/'
. $image_id . '/m/'
. sprintf('%02d', $zoom_level)
. '/x' . sprintf('%02d', $x)
. 'y' . sprintf('%02d', $y)
. '.jpg';
}