401 lines
9.7 KiB
PHP
401 lines
9.7 KiB
PHP
<?php
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require_once("wp-gpx-maps_utils_nggallery.php");
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function sitePath()
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{
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return substr(substr(__FILE__, 0, strrpos(__FILE__,'wp-content')), 0, -1);
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// $uploadsPath = substr($uploadsPath, 0, -1);
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}
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function gpxFolderPath()
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{
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$upload_dir = wp_upload_dir();
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$uploadsPath = $upload_dir['basedir'];
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$ret = $uploadsPath.DIRECTORY_SEPARATOR."gpx";
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return str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $ret);
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}
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function gpxCacheFolderPath()
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{
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$upload_dir = wp_upload_dir();
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$uploadsPath = $upload_dir['basedir'];
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$ret = $uploadsPath.DIRECTORY_SEPARATOR."gpx".DIRECTORY_SEPARATOR."cache";
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return str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $ret);
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}
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function relativeGpxFolderPath()
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{
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$sitePath = sitePath();
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$realGpxPath = gpxFolderPath();
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$ret = str_replace($sitePath,'',$realGpxPath).DIRECTORY_SEPARATOR;
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return str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $ret);
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}
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function recursive_remove_directory($directory, $empty=FALSE)
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{
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if(substr($directory,-1) == '/')
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{
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$directory = substr($directory,0,-1);
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}
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if(!file_exists($directory) || !is_dir($directory))
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{
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return FALSE;
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}elseif(is_readable($directory))
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{
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$handle = opendir($directory);
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while (FALSE !== ($item = readdir($handle)))
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{
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if($item != '.' && $item != '..')
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{
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$path = $directory.'/'.$item;
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if(is_dir($path))
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{
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recursive_remove_directory($path);
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}else{
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unlink($path);
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}
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}
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}
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closedir($handle);
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if($empty == FALSE)
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{
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if(!rmdir($directory))
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{
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return FALSE;
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}
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}
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}
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return TRUE;
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}
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function getPoints($gpxPath,$gpxOffset = 10, $donotreducegpx)
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{
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$points = array();
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$dist=0;
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$lastLat=0;
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$lastLon=0;
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$lastEle=0;
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$lastOffset=0;
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if (file_exists($gpxPath))
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{
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$points = parseXml($gpxPath, $gpxOffset);
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}
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else
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{
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echo "File $gpxPath not found!";
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}
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// reduce the points to around 200 to speedup
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if ( $donotreducegpx != true)
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{
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$count=sizeof($points->lat);
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if ($count>200)
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{
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$f = round($count/200);
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if ($f>1)
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for($i=$count;$i>0;$i--)
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if ($i % $f != 0)
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{
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unset($points->lat[$i]);
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unset($points->lon[$i]);
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unset($points->ele[$i]);
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unset($points->dist[$i]);
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unset($points->speed[$i]);
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unset($points->hr[$i]);
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unset($points->cad[$i]);
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}
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}
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}
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return $points;
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}
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function parseXml($filePath, $gpxOffset)
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{
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$points = null;
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$points->lat = array();
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$points->lon = array();
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$points->ele = array();
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$points->dist = array();
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$points->speed = array();
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$points->hr = array();
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$points->cad = array();
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$gpx = simplexml_load_file($filePath);
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if($gpx === FALSE)
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return;
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$gpx->registerXPathNamespace('10', 'http://www.topografix.com/GPX/1/0');
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$gpx->registerXPathNamespace('11', 'http://www.topografix.com/GPX/1/1');
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$gpx->registerXPathNamespace('gpxx', 'http://www.garmin.com/xmlschemas/GpxExtensions/v3');
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$gpx->registerXPathNamespace('gpxtpx', 'http://www.garmin.com/xmlschemas/TrackPointExtension/v1');
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$nodes = $gpx->xpath('//trkpt | //10:trkpt | //11:trkpt');
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if ( count($nodes) > 0 )
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{
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$lastLat = 0;
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$lastLon = 0;
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$lastEle = 0;
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$lastTime = 0;
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$dist = 0;
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$lastOffset = 0;
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$speedBuffer = array();
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// normal case
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foreach($nodes as $trkpt)
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{
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$lat = $trkpt['lat'];
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$lon = $trkpt['lon'];
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$ele = $trkpt->ele;
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$time = $trkpt->time;
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$speed = (float)$trkpt->speed;
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$hr = 0;
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$cad = 0;
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if (isset($trkpt->extensions))
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{
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$_hr = $trkpt->extensions->xpath('gpxtpx:TrackPointExtension/gpxtpx:hr/text()');
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if ($_hr)
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{
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foreach ($_hr as $node) {
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$hr = (float)$node;
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}
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}
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$_cad = $trkpt->extensions->xpath('gpxtpx:TrackPointExtension/gpxtpx:cad/text()');
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if ($_cad)
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{
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foreach ($_cad as $node) {
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$cad = (float)$node;
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}
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}
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}
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if ($lastLat == 0 && $lastLon == 0)
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{
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//Base Case
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array_push($points->lat, (float)$lat);
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array_push($points->lon, (float)$lon);
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array_push($points->ele, (float)round($ele,2));
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array_push($points->dist, (float)round($dist,2));
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array_push($points->speed, 0);
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array_push($points->hr, $hr);
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array_push($points->cad, $cad);
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$lastLat=$lat;
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$lastLon=$lon;
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$lastEle=$ele;
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$lastTime=$time;
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}
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else
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{
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//Normal Case
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$offset = calculateDistance((float)$lat, (float)$lon, (float)$ele, (float)$lastLat, (float)$lastLon, (float)$lastEle);
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$dist = $dist + $offset;
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if ($speed == 0)
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{
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$datediff = (float)my_date_diff($lastTime,$time);
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if ($datediff>0)
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{
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$speed = $offset / $datediff;
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}
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}
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array_push($speedBuffer, $speed);
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if (((float) $offset + (float) $lastOffset) > $gpxOffset)
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{
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//Bigger Offset -> write coordinate
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$avgSpeed = 0;
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foreach($speedBuffer as $s)
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{
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$avgSpeed += $s;
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}
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$avgSpeed = $avgSpeed / count($speedBuffer);
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$speedBuffer = array();
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$lastOffset=0;
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array_push($points->lat, (float)$lat );
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array_push($points->lon, (float)$lon );
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array_push($points->ele, (float)round($ele, 2) );
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array_push($points->dist, (float)round($dist, 2) );
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array_push($points->speed, (float)round($avgSpeed, 1) );
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array_push($points->hr, $hr);
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array_push($points->cad, $cad);
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}
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else
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{
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//Smoller Offset -> continue..
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$lastOffset = (float) $lastOffset + (float) $offset ;
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}
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}
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$lastLat=$lat;
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$lastLon=$lon;
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$lastEle=$ele;
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$lastTime=$time;
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}
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unset($nodes);
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}
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else
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{
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$nodes = $gpx->xpath('//gpxx:rpt');
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if ( count($nodes) > 0 )
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{
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$lastLat = 0;
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$lastLon = 0;
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$lastEle = 0;
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$dist = 0;
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$lastOffset = 0;
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// Garmin case
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foreach($nodes as $rpt)
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{
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$lat = $rpt['lat'];
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$lon = $rpt['lon'];
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if ($lastLat == 0 && $lastLon == 0)
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{
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//Base Case
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array_push($points->lat, (float)$lat );
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array_push($points->lon, (float)$lon );
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array_push($points->ele, 0 );
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array_push($points->dist, 0 );
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array_push($points->speed, 0 );
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array_push($points->hr, 0 );
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array_push($points->cad, 0 );
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$lastLat=$lat;
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$lastLon=$lon;
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}
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else
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{
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//Normal Case
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$offset = calculateDistance($lat, $lon, 0,$lastLat, $lastLon, 0);
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$dist = $dist + $offset;
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if (((float) $offset + (float) $lastOffset) > $gpxOffset)
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{
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//Bigger Offset -> write coordinate
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$lastOffset=0;
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array_push($points->lat, (float)$lat );
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array_push($points->lon, (float)$lon );
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array_push($points->ele, 0 );
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array_push($points->dist, 0 );
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array_push($points->speed, 0 );
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array_push($points->hr, 0 );
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array_push($points->cad, 0 );
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}
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else
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{
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//Smoller Offset -> continue..
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$lastOffset= (float) $lastOffset + (float) $offset;
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}
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}
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$lastLat=$lat;
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$lastLon=$lon;
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}
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unset($nodes);
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}
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else
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{
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echo "Empty Gpx or not supported File!";
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}
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}
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unset($gpx);
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return $points;
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}
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function getWayPoints($gpxPath)
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{
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$points = array();
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if (file_exists($gpxPath))
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{
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$points = array();
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$gpx = simplexml_load_file($gpxPath);
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$gpx->registerXPathNamespace('10', 'http://www.topografix.com/GPX/1/0');
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$gpx->registerXPathNamespace('11', 'http://www.topografix.com/GPX/1/1');
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$nodes = $gpx->xpath('//wpt | //10:wpt | //11:wpt');
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if ( count($nodes) > 0 )
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{
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// normal case
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foreach($nodes as $wpt)
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{
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$lat = $wpt['lat'];
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$lon = $wpt['lon'];
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$ele = $wpt->ele;
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$time = $wpt->time;
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$name = $wpt->name;
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$desc = $wpt->desc;
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$sym = $wpt->sym;
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$type = $wpt->type;
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array_push($points, array((float)$lat,(float)$lon,(float)$ele,$time,$name,$desc,$sym,$type));
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}
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}
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}
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return $points;
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}
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function toRadians($degrees)
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{
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return (float)($degrees * 3.1415926535897932385 / 180);
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}
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function calculateDistance($lat1,$lon1,$ele1,$lat2,$lon2,$ele2)
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{
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$alpha = (float)sin((float)toRadians((float) $lat2 - (float) $lat1) / 2);
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$beta = (float)sin((float)toRadians((float) $lon2 - (float) $lon1) / 2);
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//Distance in meters
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$a = (float) ( (float)$alpha * (float)$alpha) + (float) ( (float)cos( (float)toRadians($lat1)) * (float)cos( (float)toRadians($lat2)) * (float)$beta * (float)$beta );
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$dist = 2 * 6369628.75 * (float)atan2((float)sqrt((float)$a), (float)sqrt(1 - (float) $a));
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$d = (float)sqrt((float)pow((float)$dist, 2) + pow((float) $lat1 - (float)$lat2, 2));
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return sqrt((float)pow((float)$ele1-(float)$ele2,2)+(float)pow((float)$d,2));
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}
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function my_date_diff($old_date, $new_date) {
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$t1 = strtotime($new_date);
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$t2 = strtotime($old_date);
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// milliceconds fix
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$t1 += date_getDecimals($new_date);
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$t2 += date_getDecimals($old_date);
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$offset = (float)($t1 - $t2);
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//echo "$offset = $new_date - $old_date; ".strtotime($new_date)." ".strtotime($old_date)." <br />";
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return $offset;
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}
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function date_getDecimals($date)
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{
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if (preg_match('(\.([0-9]{2})Z?)', $date, $matches))
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{
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return (float)((float)$matches[1] / 100);
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}
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else
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{
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return 0;
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}
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}
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?>
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