def set_suggested_lat_lon_from_mag_north(self,
heading_degrees_from_mag_north,
distance):
self.set_transect_bearing_wrt_magnetic_north(
heading_degrees_from_mag_north)
trig_radians_angle = positive_radians(
degrees_to_radians(self.transect_bearing))
square_center = self.expedition.grid_square.center
center_point = [square_center.lat(), square_center.lon()]
suggested_location = list(
walk_transect(center_point, distance, trig_radians_angle))
self.set_suggested_lat_long(suggested_location)
def set_suggested_lat_lon_from_mag_north(self,
heading_degrees_from_mag_north,
distance):
self.set_transect_bearing_wrt_magnetic_north(
heading_degrees_from_mag_north)
trig_radians_angle = positive_radians(
degrees_to_radians(self.transect_bearing))
square_center = self.expedition.grid_square.center
center_point = [square_center.lat(), square_center.lon()]
suggested_location = list(
walk_transect(center_point, distance, trig_radians_angle))
self.set_suggested_lat_long(suggested_location)
def transect_endpoints(self):
trig_radians_angle = positive_radians(
degrees_to_radians(self.transect_bearing))
side_of_square = 250.0 # meters. #TODO move this to settings.
transect_length = length_of_transect(
trig_radians_angle, side_of_square)
square_center = self.expedition.grid_square.center
center_point = [square_center.lat(), square_center.lon()]
result = {}
result['center'] = [square_center.lat(), square_center.lon()]
result['edge'] = list(
walk_transect(center_point, transect_length, trig_radians_angle))
return result
def transect_endpoints(self):
trig_radians_angle = positive_radians(
degrees_to_radians(self.transect_bearing))
side_of_square = 250.0 # meters. #TODO move this to settings.
transect_length = length_of_transect(trig_radians_angle,
side_of_square)
square_center = self.expedition.grid_square.center
center_point = [square_center.lat(), square_center.lon()]
result = {}
result['center'] = [square_center.lat(), square_center.lon()]
result['edge'] = list(
walk_transect(center_point, transect_length, trig_radians_angle))
return result
def transects(self):
result = []
points_and_letters = dict(
(t, t.team_letter) for t in self.traplocation_set.all())
team_letters = sorted(list(set(points_and_letters.values())))
the_id = 0
for letter in team_letters:
the_other_id = 0
the_id = the_id + 1
the_points = [
point for point, x in points_and_letters.iteritems()
if x == letter
]
a_point = the_points[0]
transect_points = [a.recreate_point_obj() for a in the_points]
for p in transect_points:
the_other_id = the_other_id + 1
p['transect_id'] = the_id
p['point_index_2'] = the_other_id
side_of_square = 250.0 # meters. #TODO move this to settings.
trig_radians_angle = positive_radians(
degrees_to_radians(a_point.transect_bearing))
transect_length = length_of_transect(trig_radians_angle,
side_of_square)
magnetic_north = a.transect_bearing_wrt_magnetic_north()
transect_info = {
'transect_id': the_id,
'team_letter': letter,
'heading': a_point.transect_bearing,
'heading_radians': trig_radians_angle,
'length': transect_length,
'edge': a_point.transect_endpoints()['edge'],
'heading_wrt_magnetic_north': magnetic_north,
'points': transect_points,
}
result.append(transect_info)
return result
def transects(self):
result = []
points_and_letters = dict((t, t.team_letter)
for t in self.traplocation_set.all())
team_letters = sorted(list(set(points_and_letters.values())))
the_id = 0
for letter in team_letters:
the_other_id = 0
the_id = the_id + 1
the_points = [
point for point, x in points_and_letters.items()
if x == letter]
a_point = the_points[0]
transect_points = [a.recreate_point_obj() for a in the_points]
for p in transect_points:
the_other_id = the_other_id + 1
p['transect_id'] = the_id
p['point_index_2'] = the_other_id
side_of_square = 250.0 # meters. #TODO move this to settings.
trig_radians_angle = positive_radians(
degrees_to_radians(a_point.transect_bearing))
transect_length = length_of_transect(
trig_radians_angle, side_of_square)
magnetic_north = a.transect_bearing_wrt_magnetic_north()
transect_info = {
'transect_id': the_id,
'team_letter': letter,
'heading': a_point.transect_bearing,
'heading_radians': trig_radians_angle,
'length': transect_length,
'edge': a_point.transect_endpoints()['edge'],
'heading_wrt_magnetic_north': magnetic_north,
'points': transect_points,
}
result.append(transect_info)
return result
def test_neg_positive_radians(self):
self.positive_radians = positive_radians(-19)
self.assertEquals(self.positive_radians, -19 + 2 * pi)
def test_positive_radians(self):
self.positive_radians = positive_radians(19)
self.assertEquals(self.positive_radians, 19)
