def __create_lookat(self):
if not len(self.server.locations):
return ''
begin = format_iso_time(min(self.server.locations))
end = format_iso_time(max(self.server.locations))
lat = [y for y, _x, _z in self.server.locations.itervalues()]
lon = [x for _y, x, _z in self.server.locations.itervalues()]
latMin = min(lat)
latMax = max(lat)
lonMin = min(lon)
lonMax = max(lon)
latCen = (latMax + latMin) / 2
lonCen = (lonMax + lonMin) / 2
dist = haversine(latMin, latMax, lonMin, lonMax)
dist = limit(dist, 100, 50000)
lookAt = ('\t\t<LookAt>\n'
'\t\t\t<latitude>{}</latitude>\n'
'\t\t\t<longitude>{}</longitude>\n'
'\t\t\t<altitudeMode>clampToGround</altitudeMode>\n'
'\t\t\t<range>{}</range>\n'
'\t\t\t<gx:TimeSpan>\n'
'\t\t\t\t<begin>{}</begin>\n'
'\t\t\t\t<end>{}</end>\n'
'\t\t\t</gx:TimeSpan>\n'
'\t\t</LookAt>\n').\
format(latCen, lonCen, dist * 2, begin, end)
return lookAt
def export_gpx(filename, locations, name):
handle = open(filename, 'wb')
header = ('<?xml version="1.0" encoding="UTF-8" standalone="no" ?>\n'
'<gpx xmlns="http://www.topografix.com/GPX/1/1" creator="{}" version="1.1">\n'
'\t<trk>\n'
'\t\t<name>{}</name>\n'
'\t\t<trkseg>\n').format(name, 'test name')
handle.write(header)
for location in sorted(locations.items()):
timeStamp = format_iso_time(location[0])
lat = location[1][0]
lon = location[1][1]
alt = location[1][2]
point = ('\t\t\t<trkpt lat="{}" lon="{}">\n'
'\t\t\t\t<ele>{}</ele>\n'
'\t\t\t\t<time>{}</time>\n'
'\t\t\t</trkpt>\n').format(lat, lon, alt, timeStamp)
handle.write(point)
footer = ('\t\t</trkseg>\n'
'\t</trk>\n'
'</gpx>\n')
handle.write(footer)
handle.close()
def __create_track(self):
if not len(self.server.locations):
return ''
track = ('\t\t<Placemark>\n'
'\t\t\t<name>Track</name>\n'
'\t\t\t<description>{} locations</description>\n'
'\t\t\t<styleUrl>#track</styleUrl>\n'
'\t\t\t<gx:Track>\n'
'\t\t\t\t<altitudeMode>clampToGround</altitudeMode>\n').\
format(len(self.server.locations))
with self.server.lock:
for timeStamp in sorted(self.server.locations):
lat, lon, alt = self.server.locations[timeStamp]
timeStr = format_iso_time(timeStamp)
if alt is None:
track += '\t\t\t\t<gx:coord>{} {}</gx:coord>\n'.\
format(lon, lat)
else:
track += '\t\t\t\t<gx:coord>{} {} {}</gx:coord>\n'.\
format(lon, lat, alt)
track += '\t\t\t\t<when>{}</when>\n'.format(timeStr)
track += ('\t\t\t</gx:Track>\n' '\t\t</Placemark>\n')
return track
