105 lines
2.8 KiB
PHP
105 lines
2.8 KiB
PHP
<?php
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function isNGGalleryActive() {
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if (!function_exists('is_plugin_active')) {
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require_once(sitePath() . '/wp-admin/includes/plugin.php');
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}
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return is_plugin_active("nextgen-gallery/nggallery.php");
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}
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function getNGGalleryImages($ngGalleries, $ngImages, $dt, $lat, $lon, $dtoffset, &$error)
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{
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$result = array();
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$galids = explode(',', $ngGalleries);
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$imgids = explode(',', $ngImages);
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if (!isNGGalleryActive())
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return '';
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try {
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$pictures = array();
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foreach ($galids as $g) {
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$pictures = array_merge($pictures, nggdb::get_gallery($g));
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}
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foreach ($imgids as $i) {
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array_push($pictures, nggdb::find_image($i));
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}
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foreach ($pictures as $p) {
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$item = array();
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$item["data"] = $p->thumbHTML;
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if (is_callable('exif_read_data'))
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{
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$exif = @exif_read_data($p->imagePath);
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if ($exif !== false)
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{
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$item["lon"] = getExifGps($exif["GPSLongitude"], $exif['GPSLongitudeRef']);
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$item["lat"] = getExifGps($exif["GPSLatitude"], $exif['GPSLatitudeRef']);
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if (($item["lat"] != 0) || ($item["lon"] != 0))
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{
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$result[] = $item;
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}
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else if (isset($p->imagedate))
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{
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$_dt = strtotime($p->imagedate) + $dtoffset;
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$_item = findItemCoordinate($_dt, $dt, $lat, $lon);
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if ($_item != null)
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{
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$item["lat"] = $_item["lat"];
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$item["lon"] = $_item["lon"];
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$result[] = $item;
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}
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}
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}
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}
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else
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{
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$error .= "Sorry, <a href='http://php.net/manual/en/function.exif-read-data.php' target='_blank' >exif_read_data</a> function not found! check your hosting..<br />";
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}
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}
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} catch (Exception $e) {
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$error .= 'Error When Retrieving NextGen Gallery galleries/images: $e <br />';
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}
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return $result;
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}
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function findItemCoordinate($imgdt, $dt, $lat, $lon)
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{
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foreach(array_keys($dt) as $i)
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{
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if ($i!=0 && $imgdt >= $dt[$i-1] && $imgdt <= $dt[$i])
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{
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if ($lat[$i] != 0 && $lon[$i] != 0)
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return array( "lat" => $lat[$i], "lon" => $lon[$i] );
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}
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}
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return null;
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}
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function getExifGps($exifCoord, $hemi)
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{
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$degrees = count($exifCoord) > 0 ? gps2Num($exifCoord[0]) : 0;
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$minutes = count($exifCoord) > 1 ? gps2Num($exifCoord[1]) : 0;
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$seconds = count($exifCoord) > 2 ? gps2Num($exifCoord[2]) : 0;
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$flip = ($hemi == 'W' or $hemi == 'S') ? -1 : 1;
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return $flip * ($degrees + $minutes / 60 + $seconds / 3600);
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}
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function gps2Num($coordPart)
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{
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$parts = explode('/', $coordPart);
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if (count($parts) <= 0)
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return 0;
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if (count($parts) == 1)
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return $parts[0];
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$lat = floatval($parts[0]);
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$lon = floatval($parts[1]);
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if ($lon == 0)
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return $lat;
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return $lat / $lon;
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}
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?>
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