def clear_all_gpx(widget=None):
"""Forget all GPX data, start over with a clean slate."""
for trackfile in known_trackfiles.values():
trackfile.destroy()
known_trackfiles.clear()
points.clear()
metadata.omega = float('-inf') # Final GPX track point
metadata.alpha = float('inf') # Initial GPX track point
def destroy(self, button=None):
"""Die a horrible death."""
for polygon in self.polygons:
MapView.remove_layer(polygon)
self.polygons.clear()
self.widgets.trackfile_settings.destroy()
del self.cache[self.filename]
TrackFile.instances.discard(self)
points.clear()
for trackfile in TrackFile.instances:
points.update(trackfile.tracks)
TrackFile.update_range()
def clear_all(*ignore):
"""Forget all GPX data, start over with a clean slate."""
for trackfile in list(TrackFile.instances):
trackfile.destroy()
points.clear()
