188cb5f8 |
1 | #!/usr/bin/php5-cgi |
2 | <?php |
3 | |
4 | /** |
5 | * staticMapLite 0.03 |
6 | * modded for RRZE settings -unrz191 2012-06-10 |
7 | * |
8 | * Copyright 2009 Gerhard Koch |
9 | * |
10 | * Licensed under the Apache License, Version 2.0 (the "License"); |
11 | * you may not use this file except in compliance with the License. |
12 | * You may obtain a copy of the License at |
13 | * |
14 | * http://www.apache.org/licenses/LICENSE-2.0 |
15 | * |
16 | * Unless required by applicable law or agreed to in writing, software |
17 | * distributed under the License is distributed on an "AS IS" BASIS, |
18 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
19 | * See the License for the specific language governing permissions and |
20 | * limitations under the License. |
21 | * |
22 | * @author Gerhard Koch <gerhard.koch AT ymail.com> |
23 | * |
24 | * USAGE: |
25 | * |
26 | * 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 |
27 | * |
28 | */ |
29 | |
30 | error_reporting(0); |
31 | ini_set('display_errors','off'); |
32 | |
33 | Class staticMapLite { |
34 | |
35 | protected $maxWidth = 2048; |
36 | protected $maxHeight = 2048; |
37 | |
38 | protected $tileSize = 256; |
39 | protected $tileSrcUrl = array( 'osmorg' => 'http://osm.rrze.fau.de/tiles/{Z}/{X}/{Y}.png', |
40 | 'osmde' => 'http://osm.rrze.fau.de/osmde/{Z}/{X}/{Y}.png' |
41 | ); |
42 | |
43 | protected $tileDefaultSrc = 'osmde'; |
44 | protected $markerBaseDir = '/var/www/staticmaplite/images/markers'; |
45 | protected $osmLogo = '/var/www/staticmaplite/images/osm_logo.png'; |
46 | |
47 | protected $markerPrototypes = array(// found at http://www.mapito.net/map-marker-icons.html |
48 | 'lighblue' => array('regex'=>'/^lightblue([0-9]+)$/', |
49 | 'extension'=>'.png', |
50 | 'shadow'=>false, |
51 | 'offsetImage'=>'0,-19', |
52 | 'offsetShadow'=>false |
53 | ), |
54 | // openlayers std markers |
55 | 'ol-marker'=> array('regex'=>'/^ol-marker(|-blue|-gold|-green)+$/', |
56 | 'extension'=>'.png', |
57 | 'shadow'=>'../marker_shadow.png', |
58 | 'offsetImage'=>'-10,-25', |
59 | 'offsetShadow'=>'-1,-13' |
60 | ), |
61 | // taken from http://www.visual-case.it/cgi-bin/vc/GMapsIcons.pl |
62 | 'ylw'=> array('regex'=>'/^(pink|purple|red|ltblu|ylw)-pushpin$/', |
63 | 'extension'=>'.png', |
64 | 'shadow'=>'../marker_shadow.png', |
65 | 'offsetImage'=>'-10,-32', |
66 | 'offsetShadow'=>'-1,-13' |
67 | ) |
68 | |
69 | ); |
70 | |
71 | |
72 | |
73 | # No point in caching - our source is localhost |
74 | protected $useTileCache = false; |
75 | protected $tileCacheBaseDir = 'cache/tiles'; |
76 | |
77 | protected $useMapCache = false; |
78 | protected $mapCacheBaseDir = 'cache/maps'; |
79 | protected $mapCacheID = ''; |
80 | protected $mapCacheFile = ''; |
81 | protected $mapCacheExtension = 'png'; |
82 | |
83 | protected $zoom, $lat, $lon, $width, $height, $markers, $image, $maptype; |
84 | protected $centerX, $centerY, $offsetX, $offsetY; |
85 | |
86 | public function __construct(){ |
87 | $this->zoom = 0; |
88 | $this->lat = 0; |
89 | $this->lon = 0; |
90 | $this->width = 500; |
91 | $this->height = 350; |
92 | $this->markers = array(); |
93 | $this->maptype = $this->tileDefaultSrc; |
94 | } |
95 | |
96 | public function parseParams(){ |
97 | global $_GET; |
98 | |
99 | // get zoom from GET paramter |
100 | $this->zoom = $_GET['zoom']?intval($_GET['zoom']):0; |
101 | if($this->zoom>18)$this->zoom = 18; |
102 | |
103 | // get lat and lon from GET paramter |
104 | list($this->lat,$this->lon) = split(',',$_GET['center']); |
105 | $this->lat = floatval($this->lat); |
106 | $this->lon = floatval($this->lon); |
107 | |
108 | // get zoom from GET paramter |
109 | if($_GET['size']){ |
110 | list($this->width, $this->height) = split('x',$_GET['size']); |
111 | $this->width = intval($this->width); |
112 | if($this->width > $this->maxWidth) $this->width = $this->maxWidth; |
113 | $this->height = intval($this->height); |
114 | if($this->height > $this->maxHeight) $this->height = $this->maxHeight; |
115 | } |
116 | if($_GET['markers']){ |
117 | $markers = split('%7C|\|',$_GET['markers']); |
118 | foreach($markers as $marker){ |
119 | list($markerLat, $markerLon, $markerType) = split(',',$marker); |
120 | $markerLat = floatval($markerLat); |
121 | $markerLon = floatval($markerLon); |
122 | $markerType = basename($markerType); |
123 | $this->markers[] = array('lat'=>$markerLat, 'lon'=>$markerLon, 'type'=>$markerType); |
124 | } |
125 | |
126 | } |
127 | if($_GET['maptype']){ |
128 | if(array_key_exists($_GET['maptype'],$this->tileSrcUrl)) $this->maptype = $_GET['maptype']; |
129 | } |
130 | } |
131 | |
132 | public function lonToTile($long, $zoom){ |
133 | return (($long + 180) / 360) * pow(2, $zoom); |
134 | } |
135 | |
136 | public function latToTile($lat, $zoom){ |
137 | return (1 - log(tan($lat * pi()/180) + 1 / cos($lat* pi()/180)) / pi()) /2 * pow(2, $zoom); |
138 | } |
139 | |
140 | public function initCoords(){ |
141 | $this->centerX = $this->lonToTile($this->lon, $this->zoom); |
142 | $this->centerY = $this->latToTile($this->lat, $this->zoom); |
143 | $this->offsetX = floor((floor($this->centerX)-$this->centerX)*$this->tileSize); |
144 | $this->offsetY = floor((floor($this->centerY)-$this->centerY)*$this->tileSize); |
145 | } |
146 | |
147 | public function createBaseMap(){ |
148 | $this->image = imagecreatetruecolor($this->width, $this->height); |
149 | $startX = floor($this->centerX-($this->width/$this->tileSize)/2); |
150 | $startY = floor($this->centerY-($this->height/$this->tileSize)/2); |
151 | $endX = ceil($this->centerX+($this->width/$this->tileSize)/2); |
152 | $endY = ceil($this->centerY+($this->height/$this->tileSize)/2); |
153 | $this->offsetX = -floor(($this->centerX-floor($this->centerX))*$this->tileSize); |
154 | $this->offsetY = -floor(($this->centerY-floor($this->centerY))*$this->tileSize); |
155 | $this->offsetX += floor($this->width/2); |
156 | $this->offsetY += floor($this->height/2); |
157 | $this->offsetX += floor($startX-floor($this->centerX))*$this->tileSize; |
158 | $this->offsetY += floor($startY-floor($this->centerY))*$this->tileSize; |
159 | |
160 | for($x=$startX; $x<=$endX; $x++){ |
161 | for($y=$startY; $y<=$endY; $y++){ |
162 | $url = str_replace(array('{Z}','{X}','{Y}'),array($this->zoom, $x, $y), $this->tileSrcUrl[$this->maptype]); |
163 | $tileData = $this->fetchTile($url); |
164 | if($tileData){ |
165 | $tileImage = imagecreatefromstring($tileData); |
166 | } else { |
167 | $tileImage = imagecreate($this->tileSize,$this->tileSize); |
168 | $color = imagecolorallocate($tileImage, 255, 255, 255); |
169 | @imagestring($tileImage,1,127,127,'err',$color); |
170 | } |
171 | $destX = ($x-$startX)*$this->tileSize+$this->offsetX; |
172 | $destY = ($y-$startY)*$this->tileSize+$this->offsetY; |
173 | imagecopy($this->image, $tileImage, $destX, $destY, 0, 0, $this->tileSize, $this->tileSize); |
174 | } |
175 | } |
176 | } |
177 | |
178 | |
179 | public function placeMarkers(){ |
180 | // loop thru marker array |
181 | foreach($this->markers as $marker){ |
182 | // set some local variables |
183 | $markerLat = $marker['lat']; |
184 | $markerLon = $marker['lon']; |
185 | $markerType = $marker['type']; |
186 | // clear variables from previous loops |
187 | $markerFilename = ''; |
188 | $markerShadow = ''; |
189 | $matches = false; |
190 | // check for marker type, get settings from markerPrototypes |
191 | if($markerType){ |
192 | foreach($this->markerPrototypes as $markerPrototype){ |
193 | if(preg_match($markerPrototype['regex'],$markerType,$matches)){ |
194 | $markerFilename = $matches[0].$markerPrototype['extension']; |
195 | if($markerPrototype['offsetImage']){ |
196 | list($markerImageOffsetX, $markerImageOffsetY) = split(",",$markerPrototype['offsetImage']); |
197 | } |
198 | $markerShadow = $markerPrototype['shadow']; |
199 | if($markerShadow){ |
200 | list($markerShadowOffsetX, $markerShadowOffsetY) = split(",",$markerPrototype['offsetShadow']); |
201 | } |
202 | } |
203 | } |
204 | } |
205 | |
206 | // check required files or set default |
207 | if($markerFilename == '' || !file_exists($this->markerBaseDir.'/'.$markerFilename)){ |
208 | $markerIndex++; |
209 | $markerFilename = 'lightblue'.$markerIndex.'.png'; |
210 | $markerImageOffsetX = 0; |
211 | $markerImageOffsetY = -19; } |
212 | |
213 | // create img resource |
214 | if(file_exists($this->markerBaseDir.'/'.$markerFilename)){ |
215 | $markerImg = imagecreatefrompng($this->markerBaseDir.'/'.$markerFilename); |
216 | } else { |
217 | $markerImg = imagecreatefrompng($this->markerBaseDir.'/lightblue1.png'); |
218 | } |
219 | |
220 | // check for shadow + create shadow recource |
221 | if($markerShadow && file_exists($this->markerBaseDir.'/'.$markerShadow)){ |
222 | $markerShadowImg = imagecreatefrompng($this->markerBaseDir.'/'.$markerShadow); |
223 | } |
224 | |
225 | // calc position |
226 | $destX = floor(($this->width/2)-$this->tileSize*($this->centerX-$this->lonToTile($markerLon, $this->zoom))); |
227 | $destY = floor(($this->height/2)-$this->tileSize*($this->centerY-$this->latToTile($markerLat, $this->zoom))); |
228 | |
229 | // copy shadow on basemap |
230 | if($markerShadow && $markerShadowImg){ |
231 | imagecopy($this->image, $markerShadowImg, $destX+intval($markerShadowOffsetX), $destY+intval($markerShadowOffsetY), |
232 | 0, 0, imagesx($markerShadowImg), imagesy($markerShadowImg)); |
233 | } |
234 | |
235 | // copy marker on basemap above shadow |
236 | imagecopy($this->image, $markerImg, $destX+intval($markerImageOffsetX), $destY+intval($markerImageOffsetY), |
237 | 0, 0, imagesx($markerImg), imagesy($markerImg)); |
238 | |
239 | }; |
240 | } |
241 | |
242 | |
243 | |
244 | public function tileUrlToFilename($url){ |
245 | return $this->tileCacheBaseDir."/".str_replace(array('http://'),'',$url); |
246 | } |
247 | |
248 | public function checkTileCache($url){ |
249 | $filename = $this->tileUrlToFilename($url); |
250 | if(file_exists($filename)){ |
251 | return file_get_contents($filename); |
252 | } |
253 | } |
254 | |
255 | public function checkMapCache(){ |
256 | $this->mapCacheID = md5($this->serializeParams()); |
257 | $filename = $this->mapCacheIDToFilename(); |
258 | if(file_exists($filename)) return true; |
259 | } |
260 | |
261 | public function serializeParams(){ |
262 | return join("&",array($this->zoom,$this->lat,$this->lon,$this->width,$this->height, serialize($this->markers),$this->maptype)); |
263 | } |
264 | |
265 | public function mapCacheIDToFilename(){ |
266 | if(!$this->mapCacheFile){ |
267 | $this->mapCacheFile = $this->mapCacheBaseDir."/".$this->maptype."/".$this->zoom."/cache_".substr($this->mapCacheID,0,2)."/".substr($this->mapCacheID,2,2)."/".substr($this->mapCacheID,4); |
268 | } |
269 | return $this->mapCacheFile.".".$this->mapCacheExtension; |
270 | } |
271 | |
272 | |
273 | |
274 | public function mkdir_recursive($pathname, $mode){ |
275 | is_dir(dirname($pathname)) || $this->mkdir_recursive(dirname($pathname), $mode); |
276 | return is_dir($pathname) || @mkdir($pathname, $mode); |
277 | } |
278 | public function writeTileToCache($url, $data){ |
279 | $filename = $this->tileUrlToFilename($url); |
280 | $this->mkdir_recursive(dirname($filename),0777); |
281 | file_put_contents($filename, $data); |
282 | } |
283 | |
284 | public function fetchTile($url){ |
285 | if($this->useTileCache && ($cached = $this->checkTileCache($url))) return $cached; |
286 | $ch = curl_init(); |
287 | curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); |
288 | curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0"); |
289 | curl_setopt($ch, CURLOPT_URL, $url); |
290 | $tile = curl_exec($ch); |
291 | curl_close($ch); |
292 | if($tile && $this->useTileCache){ |
293 | $this->writeTileToCache($url,$tile); |
294 | } |
295 | return $tile; |
296 | |
297 | } |
298 | |
299 | public function copyrightNotice(){ |
300 | $logoImg = imagecreatefrompng($this->osmLogo); |
301 | imagecopy($this->image, $logoImg, imagesx($this->image)-imagesx($logoImg), imagesy($this->image)-imagesy($logoImg), 0, 0, imagesx($logoImg), imagesy($logoImg)); |
302 | |
303 | } |
304 | |
305 | public function sendHeader(){ |
306 | header('Content-Type: image/png'); |
307 | $expires = 60*60*24*14; |
308 | header("Pragma: public"); |
309 | header("Cache-Control: maxage=".$expires); |
310 | header('Expires: ' . gmdate('D, d M Y H:i:s', time()+$expires) . ' GMT'); |
311 | } |
312 | |
313 | public function makeMap(){ |
314 | $this->initCoords(); |
315 | $this->createBaseMap(); |
316 | if(count($this->markers))$this->placeMarkers(); |
317 | if($this->osmLogo) $this->copyrightNotice(); |
318 | } |
319 | |
320 | public function showMap(){ |
321 | $this->parseParams(); |
322 | if($this->useMapCache){ |
323 | // use map cache, so check cache for map |
324 | if(!$this->checkMapCache()){ |
325 | // map is not in cache, needs to be build |
326 | $this->makeMap(); |
327 | $this->mkdir_recursive(dirname($this->mapCacheIDToFilename()),0777); |
328 | imagepng($this->image,$this->mapCacheIDToFilename(),9); |
329 | $this->sendHeader(); |
330 | if(file_exists($this->mapCacheIDToFilename())){ |
331 | return file_get_contents($this->mapCacheIDToFilename()); |
332 | } else { |
333 | return imagepng($this->image); |
334 | } |
335 | } else { |
336 | // map is in cache |
337 | $this->sendHeader(); |
338 | return file_get_contents($this->mapCacheIDToFilename()); |
339 | } |
340 | |
341 | } else { |
342 | // no cache, make map, send headers and deliver png |
343 | $this->makeMap(); |
344 | $this->sendHeader(); |
345 | return imagepng($this->image); |
346 | |
347 | } |
348 | } |
349 | |
350 | } |
351 | |
352 | $map = new staticMapLite(); |
353 | print $map->showMap(); |
354 | |
355 | ?> |