| <?php | <?php |
| /** | /** |
| * staticMapLite 0.02 | * staticMapLite 0.02 |
| * | * |
| * Copyright 2009 Gerhard Koch | * Copyright 2009 Gerhard Koch |
| * | * |
| * Licensed under the Apache License, Version 2.0 (the "License"); | * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. | * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at | * You may obtain a copy of the License at |
| * | * |
| * http://www.apache.org/licenses/LICENSE-2.0 | * http://www.apache.org/licenses/LICENSE-2.0 |
| * | * |
| * Unless required by applicable law or agreed to in writing, software | * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, | * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and | * See the License for the specific language governing permissions and |
| * limitations under the License. | * limitations under the License. |
| * | * |
| * @author Gerhard Koch <gerhard.koch AT ymail.com> | * @author Gerhard Koch <gerhard.koch AT ymail.com> |
| * | * |
| * USAGE: | * USAGE: |
| * | * |
| * staticmap.php?center=40.714728,-73.998672&zoom=14&size=512x512&maptype=mapnik&markers=40.702147,-74.015794,blues|40.711614,-74.012318,greeng|40.718217,-73.998284,redc | * staticmap.php?center=40.714728,-73.998672&zoom=14&size=512x512&maptype=mapnik&markers=40.702147,-74.015794,blues|40.711614,-74.012318,greeng|40.718217,-73.998284,redc |
| * | * |
| */ | */ |
| error_reporting(0); | error_reporting(0); |
| ini_set('display_errors','off'); | ini_set('display_errors','off'); |
| Class staticMapLite { | Class staticMapLite { |
| protected $tileSize = 256; | protected $tileSize = 256; |
| protected $tileSrcUrl = array( 'mapnik' => 'http://tile.openstreetmap.org/{Z}/{X}/{Y}.png', | protected $tileSrcUrl = array( 'mapnik' => 'http://tile.openstreetmap.org/{Z}/{X}/{Y}.png', |
| 'osmarenderer' => 'http://c.tah.openstreetmap.org/Tiles/tile/{Z}/{X}/{Y}.png', | 'osmarenderer' => 'http://c.tah.openstreetmap.org/Tiles/tile/{Z}/{X}/{Y}.png', |
| 'cycle' => 'http://c.andy.sandbox.cloudmade.com/tiles/cycle/{Z}/{X}/{Y}.png' | 'cycle' => 'http://c.andy.sandbox.cloudmade.com/tiles/cycle/{Z}/{X}/{Y}.png' |
| ); | ); |
| protected $tileDefaultSrc = 'mapnik'; | protected $tileDefaultSrc = 'mapnik'; |
| protected $markerBaseDir = 'images/markers'; | protected $markerBaseDir = 'images/markers'; |
| protected $osmLogo = 'images/osm_logo.png'; | protected $osmLogo = 'images/osm_logo.png'; |
| protected $useTileCache = true; | protected $useTileCache = true; |
| protected $tileCacheBaseDir = 'cache/tiles'; | protected $tileCacheBaseDir = './cache/tiles'; |
| protected $useMapCache = true; | protected $useMapCache = true; |
| protected $mapCacheBaseDir = 'cache/maps'; | protected $mapCacheBaseDir = './cache/maps'; |
| protected $mapCacheID = ''; | protected $mapCacheID = ''; |
| protected $mapCacheFile = ''; | protected $mapCacheFile = ''; |
| protected $mapCacheExtension = 'png'; | protected $mapCacheExtension = 'png'; |
| protected $zoom, $lat, $lon, $width, $height, $markers, $image, $maptype; | protected $zoom, $lat, $lon, $width, $height, $markers, $image, $maptype; |
| protected $centerX, $centerY, $offsetX, $offsetY; | protected $centerX, $centerY, $offsetX, $offsetY; |
| public function __construct(){ | public function __construct(){ |
| $this->zoom = 0; | $this->zoom = 0; |
| $this->lat = 0; | $this->lat = 0; |
| $this->lon = 0; | $this->lon = 0; |
| $this->width = 500; | $this->width = 500; |
| $this->height = 350; | $this->height = 350; |
| $this->markers = array(); | $this->markers = array(); |
| $this->maptype = $this->tileDefaultSrc; | $this->maptype = $this->tileDefaultSrc; |
| } | } |
| public function parseParams(){ | public function parseParams(){ |
| global $_GET; | global $_GET; |
| // get zoom from GET paramter | // get zoom from GET paramter |
| $this->zoom = $_GET['zoom']?intval($_GET['zoom']):0; | $this->zoom = $_GET['zoom']?intval($_GET['zoom']):0; |
| if($this->zoom>18)$this->zoom = 18; | if($this->zoom>18)$this->zoom = 18; |
| // get lat and lon from GET paramter | // get lat and lon from GET paramter |
| list($this->lat,$this->lon) = split(',',$_GET['center']); | list($this->lat,$this->lon) = split(',',$_GET['center']); |
| $this->lat = floatval($this->lat); | $this->lat = floatval($this->lat); |
| $this->lon = floatval($this->lon); | $this->lon = floatval($this->lon); |
| // get zoom from GET paramter | // get zoom from GET paramter |
| if($_GET['size']){ | if($_GET['size']){ |
| list($this->width, $this->height) = split('x',$_GET['size']); | list($this->width, $this->height) = split('x',$_GET['size']); |
| $this->width = intval($this->width); | $this->width = intval($this->width); |
| $this->height = intval($this->height); | $this->height = intval($this->height); |
| } | } |
| if($_GET['markers']){ | if($_GET['markers']){ |
| $markers = split('%7C|\|',$_GET['markers']); | $markers = split('%7C|\|',$_GET['markers']); |
| foreach($markers as $marker){ | foreach($markers as $marker){ |
| list($markerLat, $markerLon, $markerImage) = split(',',$marker); | list($markerLat, $markerLon, $markerImage) = split(',',$marker); |
| $markerLat = floatval($markerLat); | $markerLat = floatval($markerLat); |
| $markerLon = floatval($markerLon); | $markerLon = floatval($markerLon); |
| $markerImage = basename($markerImage); | $markerImage = basename($markerImage); |
| $this->markers[] = array('lat'=>$markerLat, 'lon'=>$markerLon, 'image'=>$markerImage); | $this->markers[] = array('lat'=>$markerLat, 'lon'=>$markerLon, 'image'=>$markerImage); |
| } | } |
| } | } |
| if($_GET['maptype']){ | if($_GET['maptype']){ |
| if(array_key_exists($_GET['maptype'],$this->tileSrcUrl)) $this->maptype = $_GET['maptype']; | if(array_key_exists($_GET['maptype'],$this->tileSrcUrl)) $this->maptype = $_GET['maptype']; |
| } | } |
| } | } |
| public function lonToTile($long, $zoom){ | public function lonToTile($long, $zoom){ |
| return (($long + 180) / 360) * pow(2, $zoom); | return (($long + 180) / 360) * pow(2, $zoom); |
| } | } |
| public function latToTile($lat, $zoom){ | public function latToTile($lat, $zoom){ |
| return (1 - log(tan($lat * pi()/180) + 1 / cos($lat* pi()/180)) / pi()) /2 * pow(2, $zoom); | return (1 - log(tan($lat * pi()/180) + 1 / cos($lat* pi()/180)) / pi()) /2 * pow(2, $zoom); |
| } | } |
| public function initCoords(){ | public function initCoords(){ |
| $this->centerX = $this->lonToTile($this->lon, $this->zoom); | $this->centerX = $this->lonToTile($this->lon, $this->zoom); |
| $this->centerY = $this->latToTile($this->lat, $this->zoom); | $this->centerY = $this->latToTile($this->lat, $this->zoom); |
| $this->offsetX = floor((floor($this->centerX)-$this->centerX)*$this->tileSize); | $this->offsetX = floor((floor($this->centerX)-$this->centerX)*$this->tileSize); |
| $this->offsetY = floor((floor($this->centerY)-$this->centerY)*$this->tileSize); | $this->offsetY = floor((floor($this->centerY)-$this->centerY)*$this->tileSize); |
| } | } |
| public function createBaseMap(){ | public function createBaseMap(){ |
| $this->image = imagecreatetruecolor($this->width, $this->height); | $this->image = imagecreatetruecolor($this->width, $this->height); |
| $startX = floor($this->centerX-($this->width/$this->tileSize)/2); | $startX = floor($this->centerX-($this->width/$this->tileSize)/2); |
| $startY = floor($this->centerY-($this->height/$this->tileSize)/2); | $startY = floor($this->centerY-($this->height/$this->tileSize)/2); |
| $endX = ceil($this->centerX+($this->width/$this->tileSize)/2); | $endX = ceil($this->centerX+($this->width/$this->tileSize)/2); |
| $endY = ceil($this->centerY+($this->height/$this->tileSize)/2); | $endY = ceil($this->centerY+($this->height/$this->tileSize)/2); |
| $this->offsetX = -floor(($this->centerX-floor($this->centerX))*$this->tileSize); | $this->offsetX = -floor(($this->centerX-floor($this->centerX))*$this->tileSize); |
| $this->offsetY = -floor(($this->centerY-floor($this->centerY))*$this->tileSize); | $this->offsetY = -floor(($this->centerY-floor($this->centerY))*$this->tileSize); |
| $this->offsetX += floor($this->width/2); | $this->offsetX += floor($this->width/2); |
| $this->offsetY += floor($this->height/2); | $this->offsetY += floor($this->height/2); |
| $this->offsetX += floor($startX-floor($this->centerX))*$this->tileSize; | $this->offsetX += floor($startX-floor($this->centerX))*$this->tileSize; |
| $this->offsetY += floor($startY-floor($this->centerY))*$this->tileSize; | $this->offsetY += floor($startY-floor($this->centerY))*$this->tileSize; |
| for($x=$startX; $x<=$endX; $x++){ | for($x=$startX; $x<=$endX; $x++){ |
| for($y=$startY; $y<=$endY; $y++){ | for($y=$startY; $y<=$endY; $y++){ |
| $url = str_replace(array('{Z}','{X}','{Y}'),array($this->zoom, $x, $y), $this->tileSrcUrl[$this->maptype]); | $url = str_replace(array('{Z}','{X}','{Y}'),array($this->zoom, $x, $y), $this->tileSrcUrl[$this->maptype]); |
| $tileImage = imagecreatefromstring($this->fetchTile($url)); | $tileImage = imagecreatefromstring($this->fetchTile($url)); |
| $destX = ($x-$startX)*$this->tileSize+$this->offsetX; | $destX = ($x-$startX)*$this->tileSize+$this->offsetX; |
| $destY = ($y-$startY)*$this->tileSize+$this->offsetY; | $destY = ($y-$startY)*$this->tileSize+$this->offsetY; |
| imagecopy($this->image, $tileImage, $destX, $destY, 0, 0, $this->tileSize, $this->tileSize); | imagecopy($this->image, $tileImage, $destX, $destY, 0, 0, $this->tileSize, $this->tileSize); |
| } | } |
| } | } |
| } | } |
| public function placeMarkers(){ | public function placeMarkers(){ |
| foreach($this->markers as $marker){ | foreach($this->markers as $marker){ |
| $markerLat = $marker['lat']; | $markerLat = $marker['lat']; |
| $markerLon = $marker['lon']; | $markerLon = $marker['lon']; |
| $markerImage = $marker['image']; | $markerImage = $marker['image']; |
| $markerIndex++; | $markerIndex++; |
| $markerFilename = $markerImage?(file_exists($this->markerBaseDir.'/'.$markerImage.".png")?$markerImage:'lightblue'.$markerIndex):'lightblue'.$markerIndex; | $markerFilename = $markerImage?(file_exists($this->markerBaseDir.'/'.$markerImage.".png")?$markerImage:'lightblue'.$markerIndex):'lightblue'.$markerIndex; |
| if(file_exists($this->markerBaseDir.'/'.$markerFilename.".png")){ | if(file_exists($this->markerBaseDir.'/'.$markerFilename.".png")){ |
| $markerImg = imagecreatefrompng($this->markerBaseDir.'/'.$markerFilename.".png"); | $markerImg = imagecreatefrompng($this->markerBaseDir.'/'.$markerFilename.".png"); |
| } else { | } else { |
| $markerImg = imagecreatefrompng($this->markerBaseDir.'/lightblue1.png'); | $markerImg = imagecreatefrompng($this->markerBaseDir.'/lightblue1.png'); |
| } | } |
| $destX = floor(($this->width/2)-$this->tileSize*($this->centerX-$this->lonToTile($markerLon, $this->zoom))); | $destX = floor(($this->width/2)-$this->tileSize*($this->centerX-$this->lonToTile($markerLon, $this->zoom))); |
| $destY = floor(($this->height/2)-$this->tileSize*($this->centerY-$this->latToTile($markerLat, $this->zoom))); | $destY = floor(($this->height/2)-$this->tileSize*($this->centerY-$this->latToTile($markerLat, $this->zoom))); |
| $destY = $destY - imagesy($markerImg); | $destY = $destY - imagesy($markerImg); |
| imagecopy($this->image, $markerImg, $destX, $destY, 0, 0, imagesx($markerImg), imagesy($markerImg)); | imagecopy($this->image, $markerImg, $destX, $destY, 0, 0, imagesx($markerImg), imagesy($markerImg)); |
| }; | }; |
| } | } |
| public function tileUrlToFilename($url){ | public function tileUrlToFilename($url){ |
| return $this->tileCacheBaseDir."/".str_replace(array('http://'),'',$url); | return $this->tileCacheBaseDir."/".str_replace(array('http://'),'',$url); |
| } | } |
| public function checkTileCache($url){ | public function checkTileCache($url){ |
| $filename = $this->tileUrlToFilename($url); | $filename = $this->tileUrlToFilename($url); |
| if(file_exists($filename)){ | if(file_exists($filename)){ |
| return file_get_contents($filename); | return file_get_contents($filename); |
| } | } |
| } | } |
| public function checkMapCache(){ | public function checkMapCache(){ |
| $this->mapCacheID = md5($this->serializeParams()); | $this->mapCacheID = md5($this->serializeParams()); |
| $filename = $this->mapCacheIDToFilename(); | $filename = $this->mapCacheIDToFilename(); |
| if(file_exists($filename)) return true; | if(file_exists($filename)) return true; |
| } | } |
| public function serializeParams(){ | public function serializeParams(){ |
| return join("&",array($this->zoom,$this->lat,$this->lon,$this->width,$this->height, serialize($this->markers),$this->maptype)); | return join("&",array($this->zoom,$this->lat,$this->lon,$this->width,$this->height, serialize($this->markers),$this->maptype)); |
| } | } |
| public function mapCacheIDToFilename(){ | public function mapCacheIDToFilename(){ |
| if(!$this->mapCacheFile){ | if(!$this->mapCacheFile){ |
| $this->mapCacheFile = $this->mapCacheBaseDir."/".substr($this->mapCacheID,0,2)."/".substr($this->mapCacheID,2,2)."/".substr($this->mapCacheID,4); | $this->mapCacheFile = $this->mapCacheBaseDir."/".substr($this->mapCacheID,0,2)."/".substr($this->mapCacheID,2,2)."/".substr($this->mapCacheID,4); |
| } | } |
| return $this->mapCacheFile.".".$this->mapCacheExtension; | return $this->mapCacheFile.".".$this->mapCacheExtension; |
| } | } |
| public function mkdir_recursive($pathname, $mode){ | public function mkdir_recursive($pathname, $mode){ |
| is_dir(dirname($pathname)) || $this->mkdir_recursive(dirname($pathname), $mode); | return mkdir($pathname, $mode, true); |
| return is_dir($pathname) || @mkdir($pathname, $mode); | |
| } | } |
| public function writeTileToCache($url, $data){ | public function writeTileToCache($url, $data){ |
| $filename = $this->tileUrlToFilename($url); | $filename = $this->tileUrlToFilename($url); |
| $this->mkdir_recursive(dirname($filename),0777); | $this->mkdir_recursive(dirname($filename),0777); |
| file_put_contents($filename, $data); | file_put_contents($filename, $data); |
| } | } |
| public function fetchTile($url){ | public function fetchTile($url){ |
| if($this->useTileCache && ($cached = $this->checkTileCache($url))) return $cached; | if($this->useTileCache && ($cached = $this->checkTileCache($url))) return $cached; |
| $ch = curl_init(); | $ch = curl_init(); |
| curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); | curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); |
| curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0"); | curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0"); |
| curl_setopt($ch, CURLOPT_URL, $url); | curl_setopt($ch, CURLOPT_URL, $url); |
| $tile = curl_exec($ch); | $tile = curl_exec($ch); |
| curl_close($ch); | curl_close($ch); |
| if($this->useTileCache){ | if($this->useTileCache){ |
| $this->writeTileToCache($url,$tile); | $this->writeTileToCache($url,$tile); |
| } | } |
| return $tile; | return $tile; |
| } | } |
| public function copyrightNotice(){ | public function copyrightNotice(){ |
| $logoImg = imagecreatefrompng($this->osmLogo); | $logoImg = imagecreatefrompng($this->osmLogo); |
| imagecopy($this->image, $logoImg, imagesx($this->image)-imagesx($logoImg), imagesy($this->image)-imagesy($logoImg), 0, 0, imagesx($logoImg), imagesy($logoImg)); | imagecopy($this->image, $logoImg, imagesx($this->image)-imagesx($logoImg), imagesy($this->image)-imagesy($logoImg), 0, 0, imagesx($logoImg), imagesy($logoImg)); |
| } | } |
| public function sendHeader(){ | public function sendHeader(){ |
| header('Content-Type: image/png'); | header('Content-Type: image/png'); |
| $expires = 60*60*24*14; | $expires = 60*60*24*14; |
| header("Pragma: public"); | header("Pragma: public"); |
| header("Cache-Control: maxage=".$expires); | header("Cache-Control: maxage=".$expires); |
| header('Expires: ' . gmdate('D, d M Y H:i:s', time()+$expires) . ' GMT'); | header('Expires: ' . gmdate('D, d M Y H:i:s', time()+$expires) . ' GMT'); |
| } | } |
| public function makeMap(){ | public function makeMap(){ |
| $this->initCoords(); | $this->initCoords(); |
| $this->createBaseMap(); | $this->createBaseMap(); |
| if(count($this->markers))$this->placeMarkers(); | if(count($this->markers))$this->placeMarkers(); |
| if($this->osmLogo) $this->copyrightNotice(); | if($this->osmLogo) $this->copyrightNotice(); |
| } | } |
| public function showMap(){ | public function showMap(){ |
| $this->parseParams(); | $this->parseParams(); |
| if($this->useMapCache){ | if($this->useMapCache){ |
| // use map cache, so check cache for map | // use map cache, so check cache for map |
| if(!$this->checkMapCache()){ | if(!$this->checkMapCache()){ |
| // map is not in cache, needs to be build | // map is not in cache, needs to be build |
| $this->makeMap(); | $this->makeMap(); |
| $this->mkdir_recursive(dirname($this->mapCacheIDToFilename()),0777); | $this->mkdir_recursive(dirname($this->mapCacheIDToFilename()),0777); |
| imagepng($this->image,$this->mapCacheIDToFilename(),9); | imagepng($this->image,$this->mapCacheIDToFilename(),9); |
| $this->sendHeader(); | $this->sendHeader(); |
| if(file_exists($this->mapCacheIDToFilename())){ | if(file_exists($this->mapCacheIDToFilename())){ |
| return file_get_contents($this->mapCacheIDToFilename()); | return file_get_contents($this->mapCacheIDToFilename()); |
| } else { | } else { |
| return imagepng($this->image); | return imagepng($this->image); |
| } | } |
| } else { | } else { |
| // map is in cache | // map is in cache |
| $this->sendHeader(); | $this->sendHeader(); |
| return file_get_contents($this->mapCacheIDToFilename()); | return file_get_contents($this->mapCacheIDToFilename()); |
| } | } |
| } else { | } else { |
| // no cache, make map, send headers and deliver png | // no cache, make map, send headers and deliver png |
| $this->makeMap(); | $this->makeMap(); |
| $this->sendHeader(); | $this->sendHeader(); |
| return imagepng($this->image); | return imagepng($this->image); |
| } | } |
| } | } |
| } | } |
| $map = new staticMapLite(); | $map = new staticMapLite(); |
| print $map->showMap(); | print $map->showMap(); |
| ?> | ?> |