def from_handmade(cls, start, middlePoints, destination):
"""Convert hand-made route data to a way """
if start and destination:
# route points & message points are generated at once
# * empty string as message => no message point, just route point
routePoints = [(start[0], start[1], None)]
messagePoints = []
mLength = 0 # in meters
lastLat, lastLon = start[0], start[1]
for point in middlePoints:
lat, lon, elevation, message = point
mLength += geo.distance(lastLat, lastLon, lat, lon) * 1000
routePoints.append((lat, lon, elevation))
if message != "": # is it a message point ?
point = TurnByTurnPoint(lat, lon, elevation, message)
point.distanceFromStart = mLength
messagePoints.append(point)
lastLat, lastLon = lat, lon
routePoints.append((destination[0], destination[1], None))
way = cls(routePoints)
way.add_message_points(messagePoints)
# huge guestimation (avg speed 60 km/h = 16.7 m/s)
seconds = mLength / 16.7
way.duration = seconds
way._setLength(mLength)
# done, return the result
return way
else:
return None
def from_handmade(cls, start, middlePoints, destination):
"""Convert hand-made route data to a way """
if start and destination:
# route points & message points are generated at once
# * empty string as message => no message point, just route point
routePoints = [(start[0], start[1], None)]
messagePoints = []
mLength = 0 # in meters
lastLat, lastLon = start[0], start[1]
for point in middlePoints:
lat, lon, elevation, message = point
mLength += geo.distance(lastLat, lastLon, lat, lon) * 1000
routePoints.append((lat, lon, elevation))
if message != "": # is it a message point ?
point = TurnByTurnPoint(lat, lon, elevation, message)
point.distanceFromStart = mLength
messagePoints.append(point)
lastLat, lastLon = lat, lon
routePoints.append((destination[0], destination[1], None))
way = cls(routePoints)
way.add_message_points(messagePoints)
# huge guestimation (avg speed 60 km/h = 16.7 m/s)
seconds = mLength / 16.7
way.duration = seconds
way._setLength(mLength)
# done, return the result
return way
else:
return None
def from_google_directions_result(cls, gResult):
"""Convert Google Directions result to a way object"""
leg = gResult['routes'][0]['legs'][0]
steps = leg['steps']
points = decode_polyline(gResult['routes'][0]['overview_polyline']['points'])
# length of the route can computed from its metadata
if 'distance' in leg: # this field might not be present
mLength = leg['distance']['value']
else:
mLength = None
# the route also contains the expected duration in seconds
if 'duration' in leg: # this field might not be present
sDuration = leg['duration']['value']
else:
sDuration = None
way = cls(points)
way._setLength(mLength)
way.duration = sDuration
messagePoints = []
mDistanceFromStart = 0
for step in steps:
# TODO: abbreviation filtering
message = step['html_instructions']
# as you can see, for some reason,
# the coordinates in Google Directions steps are reversed:
lat = step['start_location']['lat']
lon = step['start_location']['lng']
#TODO: end location ?
point = TurnByTurnPoint(lat, lon, message=message)
point.distanceFromStart = mDistanceFromStart
# store point to temporary list
messagePoints.append(point)
# update distance for next point
mDistanceFromLast = step["distance"]['value']
mDistanceFromStart = mDistanceFromStart + mDistanceFromLast
way.add_message_points(messagePoints)
return way
def from_google_directions_result(cls, gResult):
"""Convert Google Directions result to a way object"""
leg = gResult['routes'][0]['legs'][0]
steps = leg['steps']
points = decode_polyline(gResult['routes'][0]['overview_polyline']['points'])
# length of the route can computed from its metadata
if 'distance' in leg: # this field might not be present
mLength = leg['distance']['value']
else:
mLength = None
# the route also contains the expected duration in seconds
if 'duration' in leg: # this field might not be present
sDuration = leg['duration']['value']
else:
sDuration = None
way = cls(points)
way._setLength(mLength)
way.duration = sDuration
messagePoints = []
mDistanceFromStart = 0
for step in steps:
# TODO: abbreviation filtering
message = step['html_instructions']
# as you can see, for some reason,
# the coordinates in Google Directions steps are reversed:
lat = step['start_location']['lat']
lon = step['start_location']['lng']
#TODO: end location ?
point = TurnByTurnPoint(lat, lon, message=message)
point.distanceFromStart = mDistanceFromStart
# store point to temporary list
messagePoints.append(point)
# update distance for next point
mDistanceFromLast = step["distance"]['value']
mDistanceFromStart = mDistanceFromStart + mDistanceFromLast
way.add_message_points(messagePoints)
return way
