129 lines
3.2 KiB
PHP
129 lines
3.2 KiB
PHP
<?php
|
|
|
|
/**
|
|
* To convert a gpx file:
|
|
* 1. Add file <file_name>.gpx to geo/ folder
|
|
* 2. Assign file to project: UPDATE projects SET geofile = '<file_name>.geojson'
|
|
*/
|
|
class Converter extends PhpObject {
|
|
|
|
const GPX_EXT = '.gpx';
|
|
const GEO_EXT = '.geojson';
|
|
|
|
public function __construct() {
|
|
parent::__construct(__CLASS__, Settings::DEBUG);
|
|
}
|
|
|
|
public function convertToGeoJson($sGeoFile) {
|
|
$sFileName = pathinfo($sGeoFile, PATHINFO_FILENAME);
|
|
$sGpxFileName = $sFileName.self::GPX_EXT;
|
|
$sGeoJsonFileName = $sFileName.self::GEO_EXT;
|
|
|
|
$oGpx = new Gpx($sGpxFileName);
|
|
$oGeoJson = new GeoJson($sGeoJsonFileName);
|
|
|
|
$oGeoJson->setTracks($oGpx->getTracks());
|
|
$oGeoJson->saveFile();
|
|
}
|
|
|
|
}
|
|
|
|
class Geo extends PhpObject {
|
|
|
|
const GEO_FOLDER = 'geo/';
|
|
|
|
protected $asTracks;
|
|
protected $sFilePath;
|
|
|
|
public function __construct($sFileName) {
|
|
parent::__construct(__CLASS__, Settings::DEBUG);
|
|
$this->sFilePath = self::GEO_FOLDER.$sFileName;
|
|
$this->asTracks = array();
|
|
}
|
|
}
|
|
|
|
class Gpx extends Geo {
|
|
|
|
public function __construct($sFileName) {
|
|
parent::__construct($sFileName);
|
|
$this->parseFile();
|
|
}
|
|
|
|
public function getTracks() {
|
|
return $this->asTracks;
|
|
}
|
|
|
|
private function parseFile() {
|
|
$oXml = simplexml_load_file($this->sFilePath);
|
|
foreach($oXml->trk as $aoTrack) {
|
|
$asTrack = array(
|
|
'name' => (string) $aoTrack->name,
|
|
'desc' => str_replace("\n", '', ToolBox::fixEOL((strip_tags($aoTrack->desc)))),
|
|
'color' => (string) $aoTrack->extensions->children('gpxx', true)->TrackExtension->DisplayColor,
|
|
'points'=> array()
|
|
);
|
|
|
|
foreach($aoTrack->trkseg as $asSegment) {
|
|
foreach($asSegment as $asPoint) {
|
|
$asTrack['points'][] = array(
|
|
'lon' => (float) $asPoint['lon'],
|
|
'lat' => (float) $asPoint['lat'],
|
|
'ele' => (int) $asPoint->ele
|
|
);
|
|
}
|
|
}
|
|
$this->asTracks[] = $asTrack;
|
|
}
|
|
}
|
|
}
|
|
|
|
class GeoJson extends Geo {
|
|
|
|
public function __construct($sFileName) {
|
|
parent::__construct($sFileName);
|
|
}
|
|
|
|
public function setTracks($asTracks) {
|
|
$this->asTracks = $asTracks;
|
|
}
|
|
|
|
public function saveFile() {
|
|
$sContent = json_encode($this->getGeoJson());
|
|
//$sContent = str_replace('{"type":"Feature"', "\n\t{\"type\":\"Feature\"", $sContent);
|
|
file_put_contents($this->sFilePath, $sContent);
|
|
}
|
|
|
|
private function getGeoJson() {
|
|
$asTracks = array('features'=>array());
|
|
foreach($this->asTracks as $asTrackProps) {
|
|
|
|
//Color mapping
|
|
switch($asTrackProps['color']) {
|
|
case 'LightGray': continue 2; //discard track
|
|
case 'Magenta': $sType = 'off-track'; break;
|
|
case 'Red': $sType = 'hitchhiking'; break;
|
|
default: $sType = 'main'; break;
|
|
}
|
|
|
|
$asTrack = array(
|
|
'type' => 'Feature',
|
|
'properties' => array(
|
|
'name' => $asTrackProps['name'],
|
|
'type' => $sType,
|
|
'description' => $asTrackProps['desc']
|
|
),
|
|
'geometry' => array(
|
|
'type' => 'LineString',
|
|
'coordinates' => array()
|
|
)
|
|
);
|
|
|
|
foreach($asTrackProps['points'] as $asPoint) {
|
|
$asTrack['geometry']['coordinates'][] = array_values($asPoint);
|
|
}
|
|
$asTracks['features'][] = $asTrack;
|
|
}
|
|
|
|
return $asTracks;
|
|
}
|
|
} |