]> Raphaël G. Git Repositories - packbundle/commitdiff
Add osm util class
authorRaphaël Gertz <git@rapsys.eu>
Tue, 7 Sep 2021 13:36:06 +0000 (15:36 +0200)
committerRaphaël Gertz <git@rapsys.eu>
Tue, 7 Sep 2021 13:36:06 +0000 (15:36 +0200)
Resources/config/packages/rapsys_pack.yaml
Util/OsmUtil.php [new file with mode: 0644]

index da2416ec21b9d0568ac72ba00155e8eb99ed258b..fd9803d5d8eda0166ae9324f592b3bc9c8686b82 100644 (file)
@@ -25,6 +25,14 @@ services:
     #Register intl util class alias
     Rapsys\PackBundle\Util\IntlUtil:
         alias: 'rapsys_pack.intl_util'
     #Register intl util class alias
     Rapsys\PackBundle\Util\IntlUtil:
         alias: 'rapsys_pack.intl_util'
+    #Register osm util service
+    rapsys_pack.osm_util:
+        class: 'Rapsys\PackBundle\Util\OsmUtil'
+        arguments: [ '%kernel.project_dir%/var/cache', '%rapsys_pack.public.path%', '%rapsys_pack.public.url%' ]
+        public: true
+    #Register osm util class alias
+    Rapsys\PackBundle\Util\OsmUtil:
+        alias: 'rapsys_pack.osm_util'
     #Register slugger util service
     rapsys_pack.slugger_util:
         class: 'Rapsys\PackBundle\Util\SluggerUtil'
     #Register slugger util service
     rapsys_pack.slugger_util:
         class: 'Rapsys\PackBundle\Util\SluggerUtil'
diff --git a/Util/OsmUtil.php b/Util/OsmUtil.php
new file mode 100644 (file)
index 0000000..df66f2f
--- /dev/null
@@ -0,0 +1,358 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of the Rapsys PackBundle package.
+ *
+ * (c) Raphaël Gertz <symfony@rapsys.eu>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Rapsys\PackBundle\Util;
+
+use Symfony\Component\Filesystem\Exception\IOExceptionInterface;
+use Symfony\Component\Filesystem\Filesystem;
+
+/**
+ * Helps manage osm images
+ */
+class OsmUtil {
+       /**
+        * The tile size
+        */
+       const tz = 256;
+
+       /**
+        * The cache directory
+        */
+       protected $cache;
+
+       /**
+        * The public path
+        */
+       protected $path;
+
+       /**
+        * The tile server
+        */
+       protected $server;
+
+       /**
+        * The tile servers
+        *
+        * @see https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames#Tile_servers
+        */
+       protected $servers = [
+               'osm' => 'https://tile.openstreetmap.org/{Z}/{X}/{Y}.png',
+               'cycle' => 'http://a.tile.thunderforest.com/cycle/{Z}/{X}/{Y}.png',
+               'transport' => 'http://a.tile.thunderforest.com/transport/{Z}/{X}/{Y}.png'
+       ];
+
+       /**
+        * The public url
+        */
+       protected $url;
+
+       /**
+        * Creates a new osm util
+        *
+        * @param string $cache The cache directory
+        * @param string $path The public path
+        * @param string $url The public url
+        * @param string $server The server key
+        */
+       function __construct(string $cache, string $path, string $url, string $server = 'osm') {
+               //Set cache
+               $this->cache = $cache.'/'.$server;
+
+               //Set path
+               $this->path = $path.'/'.$server;
+
+               //Set url
+               $this->url = $url.'/'.$server;
+
+               //Set server key
+               $this->server = $server;
+       }
+
+       /**
+        * Return the image
+        *
+        * @desc Generate image in jpeg format or load it from cache
+        *
+        * @param string $pathInfo The path info
+        * @param string $alt The image alt
+        * @param int $updated The updated timestamp
+        * @param float $latitude The latitude
+        * @param float $longitude The longitude
+        * @param int $zoom The zoom
+        * @param int $width The width
+        * @param int $height The height
+        * @return array The image array
+        */
+       public function getImage(string $pathInfo, string $alt, int $updated, float $latitude, float $longitude, int $zoom = 18, int $width = 1280, int $height = 1280): array {
+               //Set path file
+               $path = $this->path.$pathInfo.'.jpeg';
+
+               //Without existing path
+               if (!is_dir($dir = dirname($path))) {
+                       //Create filesystem object
+                       $filesystem = new Filesystem();
+
+                       try {
+                               //Create path
+                               //XXX: set as 0775, symfony umask (0022) will reduce rights (0755)
+                               $filesystem->mkdir($dir, 0775);
+                       } catch (IOExceptionInterface $e) {
+                               //Throw error
+                               throw new \Exception(sprintf('Output path "%s" do not exists and unable to create it', $dir), 0, $e);
+                       }
+               }
+
+               //With path file
+               if (
+                       false &&
+                       is_file($path) &&
+                       ($stat = stat($path)) &&
+                       $stat['mtime'] >= $updated
+               ) {
+                       //Return image data
+                       return [
+                               'src' => $this->url.'/'.$stat['mtime'].$pathInfo.'.jpeg',
+                               'alt' => $alt,
+                               'height' => $height,
+                               'width' => $width
+                       ];
+               }
+
+               //Create image instance
+               $image = new \Imagick();
+
+               //Add new image
+               $image->newImage($width, $height, new \ImagickPixel('transparent'), 'jpeg');
+
+               //Create tile instance
+               $tile = new \Imagick();
+
+               //Init context
+               $ctx = stream_context_create(
+                       [
+                               'http' => [
+                                       #'header' => ['Referer: https://www.openstreetmap.org/'],
+                                       'max_redirects' => 5,
+                                       'timeout' => (int)ini_get('default_socket_timeout'),
+                                       #'user_agent' => 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36',
+                                       'user_agent' => (string)ini_get('user_agent')?:'rapsys_air/2.0.0',
+                               ]
+                       ]
+               );
+
+               //Get tile xy
+               $tileX = floor($centerX = $this->longitudeToX($longitude, $zoom));
+               $tileY = floor($centerY = $this->latitudeToY($latitude, $zoom));
+
+               //Calculate start xy
+               $startX = floor(($tileX * self::tz - $width) / self::tz);
+               $startY = floor(($tileY * self::tz - $height) / self::tz);
+
+               //Calculate end xy
+               $endX = ceil(($tileX * self::tz + $width) / self::tz);
+               $endY = ceil(($tileY * self::tz + $height) / self::tz);
+
+               for($x = $startX; $x <= $endX; $x++) {
+                       for($y = $startY; $y <= $endY; $y++) {
+                               //Set cache path
+                               $cache = $this->cache.'/'.$zoom.'/'.$x.'/'.$y.'.png';
+
+                               //Without cache path
+                               if (!is_dir($dir = dirname($cache))) {
+                                       //Create filesystem object
+                                       $filesystem = new Filesystem();
+
+                                       try {
+                                               //Create path
+                                               //XXX: set as 0775, symfony umask (0022) will reduce rights (0755)
+                                               $filesystem->mkdir($dir, 0775);
+                                       } catch (IOExceptionInterface $e) {
+                                               //Throw error
+                                               throw new \Exception(sprintf('Output directory "%s" do not exists and unable to create it', $dir), 0, $e);
+                                       }
+                               }
+
+                               //Without cache image
+                               if (!is_file($cache)) {
+                                       //Set tile url
+                                       $tileUri = str_replace(['{Z}', '{X}', '{Y}'], [$zoom, $x, $y], $this->servers[$this->server]);
+
+                                       //Store tile in cache
+                                       file_put_contents($cache, file_get_contents($tileUri, false, $ctx));
+                               }
+
+                               //Set dest x
+                               $destX = intval(floor(($width / 2) - self::tz * ($centerX - $x)));
+
+                               //Set dest y
+                               $destY = intval(floor(($height / 2) - self::tz * ($centerY - $y)));
+
+                               //Read tile from cache
+                               $tile->readImage($cache);
+
+                               //Compose image
+                               $image->compositeImage($tile, \Imagick::COMPOSITE_OVER, $destX, $destY);
+
+                               //Clear tile
+                               $tile->clear();
+                       }
+               }
+
+               //Add circle
+               //XXX: see https://www.php.net/manual/fr/imagick.examples-1.php#example-3916
+               $draw = new \ImagickDraw();
+
+               //Set text antialias
+               $draw->setTextAntialias(true);
+
+               //Set fill color
+               $draw->setFillColor('#cff');
+
+               //Set stroke color
+               $draw->setStrokeColor('#00c3f9');
+
+               //Set stroke width
+               $draw->setStrokeWidth(2);
+
+               //Draw circle
+               $draw->circle($width/2 - 5, $height/2 - 5, $width/2 + 5, $height/2 + 5);
+               #$draw->circle($tileX/self::tz - 5, $tileY/self::tz - 5, $tileX/self::tz + 5, $tileY/self::tz + 5);
+
+               //Draw on image
+               $image->drawImage($draw);
+
+               //Strip image exif data and properties
+               $image->stripImage();
+
+               //Add latitude
+               //XXX: not supported by imagick :'(
+               $image->setImageProperty('exif:GPSLatitude', $this->latitudeToSexagesimal($latitude));
+
+               //Add longitude
+               //XXX: not supported by imagick :'(
+               $image->setImageProperty('exif:GPSLongitude', $this->longitudeToSexagesimal($longitude));
+
+               //Add description
+               //XXX: not supported by imagick :'(
+               $image->setImageProperty('exif:Description', $alt);
+
+               //Save image
+               if (!$image->writeImage($path)) {
+                       //Throw error
+                       throw new \Exception(sprintf('Unable to write image "%s"', $dest));
+               }
+
+               //Get dest stat
+               $stat = stat($path);
+
+               //Return image data
+               return [
+                       'src' => $this->url.'/'.$stat['mtime'].$pathInfo.'.jpeg',
+                       'alt' => $alt,
+                       'height' => $height,
+                       'width' => $width
+               ];
+       }
+
+       /**
+        * Convert longitude to tile x number
+        *
+        * @see https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames#Lon..2Flat._to_tile_numbers_5
+        *
+        * @param float $longitude The longitude
+        * @param int $zoom The zoom
+        *
+        * @return float The tile x
+        */
+       public function longitudeToX(float $longitude, int $zoom): float {
+               return (($longitude + 180) / 360) * pow(2, $zoom);
+       }
+
+       /**
+        * Convert latitude to tile y number
+        *
+        * @see https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames#Lon..2Flat._to_tile_numbers_5
+        *
+        * @param $latitude The latitude
+        * @param $zoom The zoom
+        *
+        * @return float The tile y
+        */
+       public function latitudeToY(float $latitude, int $zoom): float {
+               return (1 - log(tan(deg2rad($latitude)) + 1 / cos(deg2rad($latitude))) / pi()) / 2 * pow(2, $zoom);
+       }
+
+       /**
+        * Convert tile x to longitude
+        *
+        * @param float $x The tile x
+        * @param int $zoom The zoom
+        *
+        * @return float The longitude
+        */
+       public function xToLongitude(float $x, int $zoom): float {
+               return $x / pow(2, $zoom) * 360.0 - 180.0;
+       }
+
+       /**
+        * Convert tile y to latitude
+        *
+        * @param float $y The tile y
+        * @param int $zoom The zoom
+        *
+        * @return float The latitude
+        */
+       public function yToLatitude(float $y, int $zoom): float {
+               return rad2deg(atan(sinh(pi() * (1 - 2 * $y / pow(2, $zoom)))));
+       }
+
+       /**
+        * Convert decimal latitude to sexagesimal
+        *
+        * @param float $latitude The decimal latitude
+        *
+        * @return string The sexagesimal longitude
+        */
+       public function latitudeToSexagesimal(float $latitude): string {
+               //Set degree
+               $degree = $latitude % 60;
+
+               //Set minute
+               $minute = ($latitude - $degree) * 60 % 60;
+
+               //Set second
+               $second = ($latitude - $degree - $minute / 60) * 3600 % 3600;
+
+               //Return sexagesimal longitude
+               return $degree.'°'.$minute.'\''.$second.'"'.($latitude >= 0 ? 'N' : 'S');
+       }
+
+       /**
+        * Convert decimal longitude to sexagesimal
+        *
+        * @param float $longitude The decimal longitude
+        *
+        * @return string The sexagesimal longitude
+        */
+       public function longitudeToSexagesimal(float $longitude): string {
+               //Set degree
+               $degree = $longitude % 60;
+
+               //Set minute
+               $minute = ($longitude - $degree) * 60 % 60;
+
+               //Set second
+               $second = ($longitude - $degree - $minute / 60) * 3600 % 3600;
+
+               //Return sexagesimal longitude
+               return $degree.'°'.$minute.'\''.$second.'"'.($longitude >= 0 ? 'E' : 'W');
+       }
+}