1<?php 2/* 3 * Copyright (c) 2012-2016 Mark C. Prins <mprins@users.sf.net> 4 * 5 * In part based on staticMapLite 0.03 available at http://staticmaplite.svn.sourceforge.net/viewvc/staticmaplite/ 6 * 7 * Copyright (c) 2009 Gerhard Koch <gerhard.koch AT ymail.com> 8 * 9 * Licensed under the Apache License, Version 2.0 (the "License"); 10 * you may not use this file except in compliance with the License. 11 * You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21include_once (realpath ( dirname ( __FILE__ ) ) . '/../geophp/geoPHP/geoPHP.inc'); 22/** 23 * 24 * @author Mark C. Prins <mprins@users.sf.net> 25 * @author Gerhard Koch <gerhard.koch AT ymail.com> 26 * 27 */ 28class StaticMap { 29 // this should probably not be changed 30 protected $tileSize = 256; 31 32 // the final output 33 var $doc = ''; 34 35 protected $tileInfo = array ( 36 // OSM sources 37 'openstreetmap' => array ( 38 'txt' => '(c) OpenStreetMap CC-BY-SA', 39 'logo' => 'osm_logo.png', 40 'url' => 'http://tile.openstreetmap.org/{Z}/{X}/{Y}.png' 41 ), 42 // OCM sources 43 'cycle' => array ( 44 'txt' => 'OpenCycleMap tiles', 45 'logo' => 'cycle_logo.png', 46 'url' => 'http://tile.opencyclemap.org/cycle/{Z}/{X}/{Y}.png' 47 ), 48 'transport' => array ( 49 'txt' => 'OpenCycleMap tiles', 50 'logo' => 'cycle_logo.png', 51 'url' => 'http://tile2.opencyclemap.org/transport/{Z}/{X}/{Y}.png' 52 ), 53 'landscape' => array ( 54 'txt' => 'OpenCycleMap tiles', 55 'logo' => 'cycle_logo.png', 56 'url' => 'http://tile3.opencyclemap.org/landscape/{Z}/{X}/{Y}.png' 57 ), 58 'toner-lite' => array ( 59 'txt' => 'OpenCycleMap tiles', 60 'logo' => 'stamen.png', 61 'url' => 'http://tile.stamen.com/toner-lite/{Z}/{X}/{Y}.png' 62 ), 63 'terrain' => array ( 64 'txt' => 'OpenCycleMap tiles', 65 'logo' => 'stamen.png', 66 'url' => 'http://tile.stamen.com/terrain/{Z}/{X}/{Y}.png' 67 ), 68 // 'piste'=>array( 69 // 'txt'=>'OpenPisteMap tiles', 70 // 'logo'=>'piste_logo.png', 71 // 'url'=>''), 72 // 'sea'=>array( 73 // 'txt'=>'OpenSeaMap tiles', 74 // 'logo'=>'sea_logo.png', 75 // 'url'=>''), 76 // H&B sources 77 'hikeandbike' => array ( 78 'txt' => 'Hike & Bike Map', 79 'logo' => 'hnb_logo.png', 80 //'url' => 'http://toolserver.org/tiles/hikebike/{Z}/{X}/{Y}.png' 81 //moved to: https://www.toolserver.org/tiles/hikebike/12/2105/1388.png 82 'url' => 'http://c.tiles.wmflabs.org/hikebike/{Z}/{X}/{Y}.png' 83 ) 84 ); 85 protected $tileDefaultSrc = 'openstreetmap'; 86 87 // set up markers 88 protected $markerPrototypes = array ( 89 // found at http://www.mapito.net/map-marker-icons.html 90 // these are 17x19 px with a pointer at the bottom left 91 'lightblue' => array ( 92 'regex' => '/^lightblue([0-9]+)$/', 93 'extension' => '.png', 94 'shadow' => false, 95 'offsetImage' => '0,-19', 96 'offsetShadow' => false 97 ), 98 // openlayers std markers are 21x25px with shadow 99 'ol-marker' => array ( 100 'regex' => '/^marker(|-blue|-gold|-green|-red)+$/', 101 'extension' => '.png', 102 'shadow' => 'marker_shadow.png', 103 'offsetImage' => '-10,-25', 104 'offsetShadow' => '-1,-13' 105 ), 106 // these are 16x16 px 107 'ww_icon' => array ( 108 'regex' => '/ww_\S+$/', 109 'extension' => '.png', 110 'shadow' => false, 111 'offsetImage' => '-8,-8', 112 'offsetShadow' => false 113 ), 114 // assume these are 16x16 px 115 'rest' => array ( 116 'regex' => '/^(?!lightblue([0-9]+)$)(?!(ww_\S+$))(?!marker(|-blue|-gold|-green|-red)+$)(.*)/', 117 'extension' => '.png', 118 'shadow' => 'marker_shadow.png', 119 'offsetImage' => '-8,-8', 120 'offsetShadow' => '-1,-1' 121 ) 122 ); 123 protected $centerX, $centerY, $offsetX, $offsetY, $image; 124 protected $zoom, $lat, $lon, $width, $height, $markers, $maptype, $kmlFileName, $gpxFileName, $geojsonFileName, $autoZoomExtent; 125 protected $tileCacheBaseDir, $mapCacheBaseDir, $mediaBaseDir; 126 protected $useTileCache = true; 127 protected $mapCacheID = ''; 128 protected $mapCacheFile = ''; 129 protected $mapCacheExtension = 'png'; 130 131 /** 132 * Constructor. 133 * 134 * @param float $lat 135 * Latitude (x) of center of map 136 * @param float $lon 137 * Longitude (y) of center of map 138 * @param int $zoom 139 * Zoomlevel 140 * @param int $width 141 * Width in pixels 142 * @param int $height 143 * Height in pixels 144 * @param string $maptype 145 * Name of the map 146 * @param mixed $markers 147 * array of markers 148 * @param string $gpx 149 * GPX filename 150 * @param string $kml 151 * KML filename 152 * @param string $mediaDir 153 * Directory to store/cache maps 154 * @param string $tileCacheBaseDir 155 * Directory to cache map tiles 156 * @param boolean $autoZoomExtent 157 * Wheter or not to override zoom/lat/lon and zoom to the extent of gpx/kml and markers 158 */ 159 public function __construct($lat, $lon, $zoom, $width, $height, $maptype, $markers, $gpx, $kml, $geojson, $mediaDir, $tileCacheBaseDir, $autoZoomExtent = TRUE) { 160 $this->zoom = $zoom; 161 $this->lat = $lat; 162 $this->lon = $lon; 163 $this->width = $width; 164 $this->height = $height; 165 // validate + set maptype 166 $this->maptype = $this->tileDefaultSrc; 167 if (array_key_exists ( $maptype, $this->tileInfo )) { 168 $this->maptype = $maptype; 169 } 170 $this->markers = $markers; 171 $this->kmlFileName = $kml; 172 $this->gpxFileName = $gpx; 173 $this->geojsonFileName = $geojson; 174 $this->mediaBaseDir = $mediaDir; 175 $this->tileCacheBaseDir = $tileCacheBaseDir . '/olmaptiles'; 176 $this->useTileCache = $this->tileCacheBaseDir !== ''; 177 $this->mapCacheBaseDir = $mediaDir . '/olmapmaps'; 178 $this->autoZoomExtent = $autoZoomExtent; 179 } 180 181 /** 182 * 183 * @param number $long 184 * @param number $zoom 185 * @return number 186 */ 187 public function lonToTile($long, $zoom) { 188 return (($long + 180) / 360) * pow ( 2, $zoom ); 189 } 190 /** 191 * 192 * @param number $lat 193 * @param number $zoom 194 * @return number 195 */ 196 public function latToTile($lat, $zoom) { 197 return (1 - log ( tan ( $lat * pi () / 180 ) + 1 / cos ( $lat * M_PI / 180 ) ) / M_PI) / 2 * pow ( 2, $zoom ); 198 } 199 200 /** 201 */ 202 public function initCoords() { 203 $this->centerX = $this->lonToTile ( $this->lon, $this->zoom ); 204 $this->centerY = $this->latToTile ( $this->lat, $this->zoom ); 205 $this->offsetX = floor ( (floor ( $this->centerX ) - $this->centerX) * $this->tileSize ); 206 $this->offsetY = floor ( (floor ( $this->centerY ) - $this->centerY) * $this->tileSize ); 207 } 208 209 /** 210 * make basemap image. 211 */ 212 public function createBaseMap() { 213 $this->image = imagecreatetruecolor ( $this->width, $this->height ); 214 $startX = floor ( $this->centerX - ($this->width / $this->tileSize) / 2 ); 215 $startY = floor ( $this->centerY - ($this->height / $this->tileSize) / 2 ); 216 $endX = ceil ( $this->centerX + ($this->width / $this->tileSize) / 2 ); 217 $endY = ceil ( $this->centerY + ($this->height / $this->tileSize) / 2 ); 218 $this->offsetX = - floor ( ($this->centerX - floor ( $this->centerX )) * $this->tileSize ); 219 $this->offsetY = - floor ( ($this->centerY - floor ( $this->centerY )) * $this->tileSize ); 220 $this->offsetX += floor ( $this->width / 2 ); 221 $this->offsetY += floor ( $this->height / 2 ); 222 $this->offsetX += floor ( $startX - floor ( $this->centerX ) ) * $this->tileSize; 223 $this->offsetY += floor ( $startY - floor ( $this->centerY ) ) * $this->tileSize; 224 225 for($x = $startX; $x <= $endX; $x ++) { 226 for($y = $startY; $y <= $endY; $y ++) { 227 $url = str_replace ( array ( 228 '{Z}', 229 '{X}', 230 '{Y}' 231 ), array ( 232 $this->zoom, 233 $x, 234 $y 235 ), $this->tileInfo [$this->maptype] ['url'] ); 236 $tileData = $this->fetchTile ( $url ); 237 if ($tileData) { 238 $tileImage = imagecreatefromstring ( $tileData ); 239 } else { 240 $tileImage = imagecreate ( $this->tileSize, $this->tileSize ); 241 $color = imagecolorallocate ( $tileImage, 255, 255, 255 ); 242 @imagestring ( $tileImage, 1, 127, 127, 'err', $color ); 243 } 244 $destX = ($x - $startX) * $this->tileSize + $this->offsetX; 245 $destY = ($y - $startY) * $this->tileSize + $this->offsetY; 246 imagecopy ( $this->image, $tileImage, $destX, $destY, 0, 0, $this->tileSize, $this->tileSize ); 247 } 248 } 249 } 250 251 /** 252 * Place markers on the map and number them in the same order as they are listed in the html. 253 */ 254 public function placeMarkers() { 255 $count = 0; 256 $color = imagecolorallocate ( $this->image, 0, 0, 0 ); 257 $bgcolor = imagecolorallocate ( $this->image, 200, 200, 200 ); 258 $markerBaseDir = dirname ( __FILE__ ) . '/icons'; 259 // loop thru marker array 260 foreach ( $this->markers as $marker ) { 261 // set some local variables 262 $markerLat = $marker ['lat']; 263 $markerLon = $marker ['lon']; 264 $markerType = $marker ['type']; 265 // clear variables from previous loops 266 $markerFilename = ''; 267 $markerShadow = ''; 268 $matches = false; 269 // check for marker type, get settings from markerPrototypes 270 if ($markerType) { 271 foreach ( $this->markerPrototypes as $markerPrototype ) { 272 if (preg_match ( $markerPrototype ['regex'], $markerType, $matches )) { 273 $markerFilename = $matches [0] . $markerPrototype ['extension']; 274 if ($markerPrototype ['offsetImage']) { 275 list ( $markerImageOffsetX, $markerImageOffsetY ) = explode ( ",", $markerPrototype ['offsetImage'] ); 276 } 277 $markerShadow = $markerPrototype ['shadow']; 278 if ($markerShadow) { 279 list ( $markerShadowOffsetX, $markerShadowOffsetY ) = explode ( ",", $markerPrototype ['offsetShadow'] ); 280 } 281 } 282 } 283 } 284 // create img resource 285 if (file_exists ( $markerBaseDir . '/' . $markerFilename )) { 286 $markerImg = imagecreatefrompng ( $markerBaseDir . '/' . $markerFilename ); 287 } else { 288 $markerImg = imagecreatefrompng ( $markerBaseDir . '/marker.png' ); 289 } 290 // check for shadow + create shadow recource 291 if ($markerShadow && file_exists ( $markerBaseDir . '/' . $markerShadow )) { 292 $markerShadowImg = imagecreatefrompng ( $markerBaseDir . '/' . $markerShadow ); 293 } 294 // calc position 295 $destX = floor ( ($this->width / 2) - $this->tileSize * ($this->centerX - $this->lonToTile ( $markerLon, $this->zoom )) ); 296 $destY = floor ( ($this->height / 2) - $this->tileSize * ($this->centerY - $this->latToTile ( $markerLat, $this->zoom )) ); 297 // copy shadow on basemap 298 if ($markerShadow && $markerShadowImg) { 299 imagecopy ( $this->image, $markerShadowImg, $destX + intval ( $markerShadowOffsetX ), $destY + intval ( $markerShadowOffsetY ), 0, 0, imagesx ( $markerShadowImg ), imagesy ( $markerShadowImg ) ); 300 } 301 // copy marker on basemap above shadow 302 imagecopy ( $this->image, $markerImg, $destX + intval ( $markerImageOffsetX ), $destY + intval ( $markerImageOffsetY ), 0, 0, imagesx ( $markerImg ), imagesy ( $markerImg ) ); 303 // add label 304 imagestring ( $this->image, 3, $destX - imagesx ( $markerImg ) + 1, $destY + intval ( $markerImageOffsetY ) + 1, ++ $count, $bgcolor ); 305 imagestring ( $this->image, 3, $destX - imagesx ( $markerImg ), $destY + intval ( $markerImageOffsetY ), $count, $color ); 306 } 307 ; 308 } 309 310 /** 311 * 312 * @param string $url 313 * @return string 314 */ 315 public function tileUrlToFilename($url) { 316 return $this->tileCacheBaseDir . "/" . str_replace ( array ( 317 'http://' 318 ), '', $url ); 319 } 320 321 /** 322 * 323 * @param string $url 324 */ 325 public function checkTileCache($url) { 326 $filename = $this->tileUrlToFilename ( $url ); 327 if (file_exists ( $filename )) { 328 return file_get_contents ( $filename ); 329 } 330 } 331 public function checkMapCache() { 332 $this->mapCacheID = md5 ( $this->serializeParams () ); 333 $filename = $this->mapCacheIDToFilename (); 334 if (file_exists ( $filename )) 335 return true; 336 } 337 public function serializeParams() { 338 return join ( "&", array ( 339 $this->zoom, 340 $this->lat, 341 $this->lon, 342 $this->width, 343 $this->height, 344 serialize ( $this->markers ), 345 $this->maptype, 346 $this->kmlFileName, 347 $this->gpxFileName, 348 $this->geojsonFileName 349 ) ); 350 } 351 public function mapCacheIDToFilename() { 352 if (! $this->mapCacheFile) { 353 $this->mapCacheFile = $this->mapCacheBaseDir . "/" . $this->maptype . "/" . $this->zoom . "/cache_" . substr ( $this->mapCacheID, 0, 2 ) . "/" . substr ( $this->mapCacheID, 2, 2 ) . "/" . substr ( $this->mapCacheID, 4 ); 354 } 355 return $this->mapCacheFile . "." . $this->mapCacheExtension; 356 } 357 358 /** 359 * Recursively create the directory. 360 * 361 * @param string $pathname 362 * The directory path. 363 * @param int $mode 364 * File access mode. For more information on modes, read the details on the chmod manpage. 365 */ 366 public function mkdir_recursive($pathname, $mode) { 367 is_dir ( dirname ( $pathname ) ) || $this->mkdir_recursive ( dirname ( $pathname ), $mode ); 368 return is_dir ( $pathname ) || @mkdir ( $pathname, $mode ); 369 } 370 371 /** 372 * Write a tile into the cache. 373 * 374 * @param string $url 375 * @param mixed $data 376 */ 377 public function writeTileToCache($url, $data) { 378 $filename = $this->tileUrlToFilename ( $url ); 379 $this->mkdir_recursive ( dirname ( $filename ), 0777 ); 380 file_put_contents ( $filename, $data ); 381 } 382 383 /** 384 * Fetch a tile and (if configured) store it in the cache. 385 * 386 * @param string $url 387 */ 388 public function fetchTile($url) { 389 if ($this->useTileCache && ($cached = $this->checkTileCache ( $url ))) 390 return $cached; 391 392 $_UA = 'Mozilla/4.0 (compatible; DokuWikiSpatial HTTP Client; ' . PHP_OS . ')'; 393 if (function_exists ( "curl_init" )) { 394 // use cUrl 395 $ch = curl_init (); 396 curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 ); 397 curl_setopt ( $ch, CURLOPT_USERAGENT, $_UA ); 398 curl_setopt ( $ch, CURLOPT_CONNECTTIMEOUT, 10 ); 399 curl_setopt ( $ch, CURLOPT_URL, $url ); 400 $tile = curl_exec ( $ch ); 401 curl_close ( $ch ); 402 } else { 403 // use file_get_contents 404 global $conf; 405 $opts = array ( 406 'http' => array ( 407 'method' => "GET", 408 'header' => "Accept-language: en\r\n" . "User-Agent: $_UA\r\n" . "accept: image/png\r\n", 409 'proxy' => "tcp://" . $conf ['proxy'] ['host'] . ":" . $conf ['proxy'] ['port'], 410 'request_fulluri' => true 411 ) 412 ); 413 $context = stream_context_create ( $opts ); 414 $tile = file_get_contents ( $url, false, $context ); 415 } 416 if ($tile && $this->useTileCache) { 417 $this->writeTileToCache ( $url, $tile ); 418 } 419 return $tile; 420 } 421 422 /** 423 * Draw gpx trace on the map. 424 */ 425 public function drawGPX() { 426 $col = imagecolorallocatealpha ( $this->image, 0, 0, 255, .4 * 127 ); 427 $gpxgeom = geoPHP::load ( file_get_contents ( $this->gpxFileName ), 'gpx' ); 428 $this->drawGeometry ( $gpxgeom, $col ); 429 } 430 431 /** 432 * Draw geojson on the map. 433 */ 434 public function drawGeojson() { 435 $col = imagecolorallocatealpha ( $this->image, 255, 0, 255, .4 * 127 ); 436 $gpxgeom = geoPHP::load ( file_get_contents ( $this->geojsonFileName ), 'json' ); 437 $this->drawGeometry ( $gpxgeom, $col ); 438 } 439 440 /** 441 * Draw kml trace on the map. 442 */ 443 public function drawKML() { 444 // TODO get colour from kml node (not currently supported in geoPHP) 445 $col = imagecolorallocatealpha ( $this->image, 255, 0, 0, .4 * 127 ); 446 $kmlgeom = geoPHP::load ( file_get_contents ( $this->kmlFileName ), 'kml' ); 447 $this->drawGeometry ( $kmlgeom, $col ); 448 } 449 450 /** 451 * Draw geometry or geometry collection on the map. 452 * 453 * @param Geometry $geom 454 * @param int $colour 455 * drawing colour 456 */ 457 private function drawGeometry($geom, $colour) { 458 switch ($geom->geometryType ()) { 459 case 'GeometryCollection' : 460 // recursively draw part of the collection 461 for($i = 1; $i < $geom->numGeometries () + 1; $i ++) { 462 $_geom = $geom->geometryN ( $i ); 463 $this->drawGeometry ( $_geom, $colour ); 464 } 465 break; 466 case 'MultiPolygon' : 467 // TODO implement / do nothing 468 break; 469 case 'MultiLineString' : 470 // TODO implement / do nothing 471 break; 472 case 'MultiPoint' : 473 // TODO implement / do nothing 474 break; 475 case 'Polygon' : 476 $this->drawPolygon ( $geom, $colour ); 477 break; 478 case 'LineString' : 479 $this->drawLineString ( $geom, $colour ); 480 break; 481 case 'Point' : 482 $this->drawPoint ( $geom, $colour ); 483 break; 484 default : 485 // draw nothing 486 break; 487 } 488 } 489 490 /** 491 * Draw a line on the map. 492 * 493 * @param LineString $line 494 * @param int $colour 495 * drawing colour 496 */ 497 private function drawLineString($line, $colour) { 498 imagesetthickness ( $this->image, 2 ); 499 for($p = 1; $p < $line->numGeometries (); $p ++) { 500 // get first pair of points 501 $p1 = $line->geometryN ( $p ); 502 $p2 = $line->geometryN ( $p + 1 ); 503 // translate to paper space 504 $x1 = floor ( ($this->width / 2) - $this->tileSize * ($this->centerX - $this->lonToTile ( $p1->x (), $this->zoom )) ); 505 $y1 = floor ( ($this->height / 2) - $this->tileSize * ($this->centerY - $this->latToTile ( $p1->y (), $this->zoom )) ); 506 $x2 = floor ( ($this->width / 2) - $this->tileSize * ($this->centerX - $this->lonToTile ( $p2->x (), $this->zoom )) ); 507 $y2 = floor ( ($this->height / 2) - $this->tileSize * ($this->centerY - $this->latToTile ( $p2->y (), $this->zoom )) ); 508 // draw to image 509 imageline ( $this->image, $x1, $y1, $x2, $y2, $colour ); 510 } 511 imagesetthickness ( $this->image, 1 ); 512 } 513 514 /** 515 * Draw a point on the map. 516 * 517 * @param Point $point 518 * @param int $colour 519 * drawing colour 520 */ 521 private function drawPoint($point, $colour) { 522 imagesetthickness ( $this->image, 2 ); 523 // translate to paper space 524 $cx = floor ( ($this->width / 2) - $this->tileSize * ($this->centerX - $this->lonToTile ( $point->x (), $this->zoom )) ); 525 $cy = floor ( ($this->height / 2) - $this->tileSize * ($this->centerY - $this->latToTile ( $point->y (), $this->zoom )) ); 526 $r = 5; 527 // draw to image 528 // imageellipse($this->image, $cx, $cy,$r, $r, $colour); 529 imagefilledellipse ( $this->image, $cx, $cy, $r, $r, $colour ); 530 // don't use imageellipse because the imagesetthickness function has 531 // no effect. So the better workaround is to use imagearc. 532 imagearc ( $this->image, $cx, $cy, $r, $r, 0, 359, $colour ); 533 imagesetthickness ( $this->image, 1 ); 534 } 535 536 /** 537 * Draw a polygon on the map. 538 * 539 * @param Polygon $polygon 540 * @param int $colour 541 * drawing colour 542 */ 543 private function drawPolygon($polygon, $colour) { 544 // TODO implementation of drawing holes, 545 // maybe draw the polygon to an in-memory image and use imagecopy, draw polygon in col., draw holes in bgcol? 546 547 // print_r('Polygon:<br />'); 548 // print_r($polygon); 549 $extPoints = array (); 550 // extring is a linestring actually.. 551 $extRing = $polygon->exteriorRing (); 552 553 for($i = 1; $i < $extRing->numGeometries (); $i ++) { 554 $p1 = $extRing->geometryN ( $i ); 555 $x = floor ( ($this->width / 2) - $this->tileSize * ($this->centerX - $this->lonToTile ( $p1->x (), $this->zoom )) ); 556 $y = floor ( ($this->height / 2) - $this->tileSize * ($this->centerY - $this->latToTile ( $p1->y (), $this->zoom )) ); 557 $extPoints [] = $x; 558 $extPoints [] = $y; 559 } 560 // print_r('points:('.($i-1).')<br />'); 561 // print_r($extPoints); 562 // imagepolygon ($this->image, $extPoints, $i-1, $colour ); 563 imagefilledpolygon ( $this->image, $extPoints, $i - 1, $colour ); 564 } 565 566 /** 567 * add copyright and origin notice and icons to the map. 568 */ 569 public function drawCopyright() { 570 $logoBaseDir = dirname ( __FILE__ ) . '/' . 'logo/'; 571 $logoImg = imagecreatefrompng ( $logoBaseDir . $this->tileInfo ['openstreetmap'] ['logo'] ); 572 $textcolor = imagecolorallocate ( $this->image, 0, 0, 0 ); 573 $bgcolor = imagecolorallocate ( $this->image, 200, 200, 200 ); 574 575 imagecopy ( $this->image, $logoImg, 0, imagesy ( $this->image ) - imagesy ( $logoImg ), 0, 0, imagesx ( $logoImg ), imagesy ( $logoImg ) ); 576 imagestring ( $this->image, 1, imagesx ( $logoImg ) + 2, imagesy ( $this->image ) - imagesy ( $logoImg ) + 1, $this->tileInfo ['openstreetmap'] ['txt'], $bgcolor ); 577 imagestring ( $this->image, 1, imagesx ( $logoImg ) + 1, imagesy ( $this->image ) - imagesy ( $logoImg ), $this->tileInfo ['openstreetmap'] ['txt'], $textcolor ); 578 579 // additional tile source info, ie. who created/hosted the tiles 580 if ($this->maptype != 'openstreetmap') { 581 $iconImg = imagecreatefrompng ( $logoBaseDir . $this->tileInfo [$this->maptype] ['logo'] ); 582 imagecopy ( $this->image, $iconImg, imagesx ( $logoImg ) + 1, imagesy ( $this->image ) - imagesy ( $iconImg ), 0, 0, imagesx ( $iconImg ), imagesy ( $iconImg ) ); 583 imagestring ( $this->image, 1, imagesx ( $logoImg ) + imagesx ( $iconImg ) + 4, imagesy ( $this->image ) - ceil ( imagesy ( $logoImg ) / 2 ) + 1, $this->tileInfo [$this->maptype] ['txt'], $bgcolor ); 584 imagestring ( $this->image, 1, imagesx ( $logoImg ) + imagesx ( $iconImg ) + 3, imagesy ( $this->image ) - ceil ( imagesy ( $logoImg ) / 2 ), $this->tileInfo [$this->maptype] ['txt'], $textcolor ); 585 } 586 } 587 588 /** 589 * make the map. 590 */ 591 public function makeMap() { 592 $this->initCoords (); 593 $this->createBaseMap (); 594 if (! empty ( $this->markers )) 595 $this->placeMarkers (); 596 if (file_exists ( $this->kmlFileName )) 597 $this->drawKML (); 598 if (file_exists ( $this->gpxFileName )) 599 $this->drawGPX (); 600 if (file_exists ( $this->geojsonFileName )) 601 $this->drawGeojson (); 602 603 $this->drawCopyright (); 604 } 605 606 /** 607 * Calculate the lat/lon/zoom values to make sure that all of the markers and gpx/kml are on the map. 608 * 609 * @param float $paddingFactor 610 * buffer constant to enlarge (>1.0) the zoom level 611 */ 612 private function autoZoom($paddingFactor = 1.0) { 613 $geoms = array (); 614 $geoms [] = new Point ( $this->lon, $this->lat ); 615 if (! empty ( $this->markers )) { 616 foreach ( $this->markers as $marker ) { 617 $geoms [] = new Point ( $marker ['lon'], $marker ['lat'] ); 618 } 619 } 620 if (file_exists ( $this->kmlFileName )) { 621 $geoms [] = geoPHP::load ( file_get_contents ( $this->kmlFileName ), 'kml' ); 622 } 623 if (file_exists ( $this->gpxFileName )) { 624 $geoms [] = geoPHP::load ( file_get_contents ( $this->gpxFileName ), 'gpx' ); 625 } 626 if (file_exists ( $this->geojsonFileName )) { 627 $geoms [] = geoPHP::load ( file_get_contents ( $this->geojsonFileName ), 'geojson' ); 628 } 629 630 if (count ( $geoms ) <= 1) 631 return; 632 633 $geom = new GeometryCollection ( $geoms ); 634 $centroid = $geom->centroid (); 635 $bbox = $geom->getBBox (); 636 637 // determine vertical resolution, this depends on the distance from the equator 638 // $vy00 = log(tan(M_PI*(0.25 + $centroid->getY()/360))); 639 $vy0 = log ( tan ( M_PI * (0.25 + $bbox ['miny'] / 360) ) ); 640 $vy1 = log ( tan ( M_PI * (0.25 + $bbox ['maxy'] / 360) ) ); 641 $zoomFactorPowered = ($this->height / 2) / (40.7436654315252 * ($vy1 - $vy0)); 642 $resolutionVertical = 360 / ($zoomFactorPowered * $this->tileSize); 643 // determine horizontal resolution 644 $resolutionHorizontal = ($bbox ['maxx'] - $bbox ['minx']) / $this->width; 645 $resolution = max ( $resolutionHorizontal, $resolutionVertical ) * $paddingFactor; 646 $zoom = log ( 360 / ($resolution * $this->tileSize), 2 ); 647 648 $this->zoom = floor ( $zoom ); 649 $this->lon = $centroid->getX (); 650 $this->lat = $centroid->getY (); 651 } 652 653 /** 654 * get the map, this may return a reference to a cached copy. 655 * 656 * @return string url relative to media dir 657 */ 658 public function getMap() { 659 if ($this->autoZoomExtent) 660 $this->autoZoom (); 661 662 // use map cache, so check cache for map 663 if (! $this->checkMapCache ()) { 664 // map is not in cache, needs to be build 665 $this->makeMap (); 666 $this->mkdir_recursive ( dirname ( $this->mapCacheIDToFilename () ), 0777 ); 667 imagepng ( $this->image, $this->mapCacheIDToFilename (), 9 ); 668 } 669 $this->doc = $this->mapCacheIDToFilename (); 670 // make url relative to media dir 671 return str_replace ( $this->mediaBaseDir, '', $this->doc ); 672 } 673} 674
