id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
58	"""burn"" tracks to map tiles"	Martin Kolman	Martin Kolman	" * burn tracks to map tiles, so that it is rendered only once
  * no to the stored images, only to the in memory tiles
  * some per tile overlay would be handy
 
 * advantages:
  * render the track once per zoomlevel/tile
  * works for zooming and rotation

 * what's needed
  * object based tiles
  * clean-up -> removing old tracks from tiles (probably just reload the image from storage)
  * alpha track renders ?"	enhancement	new	minor		gps