Use track's comment to store geojson generation options

inc/converter.php

@@ -41,6 +41,7 @@ class Converter extends PhpObject {
 class Geo extends PhpObject {
 	
 	const GEO_FOLDER = 'geo/';
+	const OPT_SIMPLE = 'simplification';
 	
 	protected $asTracks;
 	protected $sFilePath;
@@ -83,6 +84,7 @@ class Gpx extends Geo {
 			$asTrack = array(
 				'name'	=> (string) $aoTrack->name,
 				'desc'	=> str_replace("\n", '', ToolBox::fixEOL((strip_tags($aoTrack->desc)))),
+				'cmt'	=> ToolBox::fixEOL((strip_tags($aoTrack->cmt))),
 				'color'	=> (string) $aoTrack->extensions->children('gpxx', true)->TrackExtension->DisplayColor,
 				'points'=> array()
 			);
@@ -142,6 +144,7 @@ class GeoJson extends Geo {
 		
 		$this->asTracks = array();
 		foreach($asTracks as $asTrackProps) {
+			$asOptions = $this->parseOptions($asTrackProps['cmt']);
 			
 			//Color mapping
 			switch($asTrackProps['color']) {
@@ -149,7 +152,7 @@ class GeoJson extends Geo {
 					$sType = 'main';
 					break;
 				case 'Magenta':
-					if($bSimplify) {
+					if($bSimplify && $asOptions[self::OPT_SIMPLE]!='keep') {
 						$this->addNotice('Ignoring Track "'.$asTrackProps['name'].' (off-track)');
 						continue 2; //discard tracks
 					}
@@ -204,6 +207,14 @@ class GeoJson extends Geo {
 		if($bSimplify) $this->addNotice('Total: '.$iGlobalInvalidPointCount.'/'.$iGlobalPointCount.' points removed ('.round($iGlobalInvalidPointCount / $iGlobalPointCount * 100, 1).'%)');
 	}
 	
+	private function parseOptions($sComment){
+		$asOptions = array(self::OPT_SIMPLE=>'');
+		foreach(explode("\n", $sComment) as $sLine) {
+			$asOptions[mb_strtolower(trim(mb_strstr($sLine, ':', true)))] = mb_strtolower(trim(mb_substr(mb_strstr($sLine, ':'), 1)));
+		}
+		return $asOptions;
+	}
+	
 	private function isPointValid($asPointA, $asPointO, $asPointB) {
 		/*	A----O	   Calculate angle AO^OB
 		 *        \	   If angle is within [Pi - 10%; Pi + 10%], O can be discarded