def test_translate_decreasing_lat_and_lon(self):
initial_point = LatLon(45, 45)
expected_point = LatLon(44.9980984, 44.99779783)
delta_tuple = (-211.3263391, -173.6395534)
self.assertAlmostEqual(
initial_point.translate(delta_tuple).lat, expected_point.lat)
self.assertAlmostEqual(
initial_point.translate(delta_tuple).lon, expected_point.lon)
def test_translate(self):
initial_point = LatLon(45, 45)
expected_point = LatLon(45.0039935, 45.00182566)
delta_tuple = (443.8065667, 143.9373575)
self.assertAlmostEqual(
initial_point.translate(delta_tuple).lat, expected_point.lat)
self.assertAlmostEqual(
initial_point.translate(delta_tuple).lon, expected_point.lon)
def test_translate_decreasing_lon(self):
initial_point = LatLon(45, 45)
expected_point = LatLon(45.00250709, 44.99860589)
delta_tuple = (278.6178914, -109.9165341)
self.assertAlmostEqual(
initial_point.translate(delta_tuple).lat, expected_point.lat)
self.assertAlmostEqual(
initial_point.translate(delta_tuple).lon, expected_point.lon)
def test_eq_is_commutative(self):
point = LatLon(25, 190)
equivalent_point = LatLon(25, -170)
not_equivalent_point = LatLon(35, -170)
self.assertEqual(point, equivalent_point)
self.assertEqual(equivalent_point, point)
self.assertNotEqual(point, not_equivalent_point)
self.assertNotEqual(not_equivalent_point, point)
def test_translate_decreasing_lat(self):
initial_point = LatLon(45, 45)
expected_point = LatLon(44.99818284, 45.00489128)
delta_tuple = (-201.9322713, 385.6743932)
self.assertAlmostEqual(
initial_point.translate(delta_tuple).lat, expected_point.lat)
self.assertAlmostEqual(
initial_point.translate(delta_tuple).lon, expected_point.lon)
def test_delta_in_meters_decreasing_lat(self):
initial_point = LatLon(10, 65)
final_point = LatLon(9, 65)
expected_delta = (-110598.9407, 0.0000000002)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[0],
expected_delta[0],
places=4)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[1],
expected_delta[1],
places=4)
def test_delta_in_meters_decreasing_lon(self):
initial_point = LatLon(10, 65)
final_point = LatLon(10, 64)
expected_delta = (166.1395712, -109633.7978)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[0],
expected_delta[0],
places=4)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[1],
expected_delta[1],
places=4)
def test_delta_in_meters_with_no_displacement(self):
initial_point = LatLon(10, 65)
final_point = LatLon(10, 65)
expected_delta = (0, 0)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[0],
expected_delta[0],
places=4)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[1],
expected_delta[1],
places=4)
def test_delta_in_meters_increasing_lat(self):
initial_point = LatLon(10, 65)
final_point = LatLon(11, 65)
expected_delta = (110605.5709, 0.0000000002)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[0],
expected_delta[0],
places=4)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[1],
expected_delta[1],
places=4)
def test_is_inside_in_the_boundary(self):
self.assertTrue(
LatLon(45, -10).is_inside(LatLon(45, -20), LatLon(10, 10)))
self.assertTrue(
LatLon(45, -10).is_inside(LatLon(40, -10), LatLon(50, 10)))
# in the corner
self.assertTrue(
LatLon(45, -10).is_inside(LatLon(45, -10), LatLon(50, 10)))
def test_midpoint(self):
self.assertEqual(
LatLon(60, 80).midpoint(LatLon(20, 20)), LatLon(40, 50))
# with midpoint on the 0 meridian
self.assertEqual(
LatLon(-15, 80).midpoint(LatLon(15, -80)), LatLon(0, 0))
# with midpoint on the 180 meridian
self.assertEqual(
LatLon(-15, 100).midpoint(LatLon(15, -100)), LatLon(0, 180))
def _buid_city(self):
city = City()
# Get origin of the map (we use the center)
tree = ET.parse(self.osm_map)
bounds = tree.find('bounds').attrib
self.bounds = {
'origin': LatLon(float(bounds['minlat']), float(bounds['minlon'])),
'corner': LatLon(float(bounds['maxlat']), float(bounds['maxlon']))
}
self.map_origin = self.bounds['origin'].midpoint(self.bounds['corner'])
logger.debug("Map Origin: {0}".format(self.map_origin))
# Calculate bounding box based on lat/lon
min_xy = self._translate_coords(self.bounds['origin'])
max_xy = self._translate_coords(self.bounds['corner'])
self.bounding_box = BoundingBox(min_xy, max_xy)
self.bounds['size'] = abs(min_xy) * 2
logger.debug("Bound box size {0}".format(self.bounds['size']))
logger.debug("Bounding box from {0} to {1}".format(
self.bounds['origin'], self.bounds['corner']))
# Parse OSM map
self.parser = OSMParser(coords_callback=self._get_coords,
ways_callback=self._get_ways)
self.parser.parse(self.osm_map)
logger.debug("Number of ways: {}".format(len(self.osm_ways)))
logger.debug("Number of coords: {}".format(len(self.osm_coords)))
# Ground plane
city.set_ground_plane(
GroundPlane(max(self.bounds['size'].x, self.bounds['size'].y),
Point(0, 0, 0)))
self._create_roads(city)
self._create_intersections(city)
# self._create_buildings(city)
city.trim_roads()
return city
def _get_coords(self, coords):
''' OSM parser callback for the coords '''
# osmid: OSM id for the node
# lat, lon: latitude and longitude of the node
for osmid, lon, lat in coords:
lat_lon = LatLon(lat, lon)
self.osm_coords[osmid] = {
'lat_lon': lat_lon,
'point': self._translate_coords(lat_lon)
}
def test_midpont_with_midpoint_near_180_meridian(self):
# midpoint with positive longitude
self.assertEqual(
LatLon(20, -160).midpoint(LatLon(40, 140)), LatLon(30, 170))
# midpoint with negative longitude
self.assertEqual(
LatLon(20, -100).midpoint(LatLon(40, 160)), LatLon(30, -150))
def _create_buildings(self, city):
'''
Iterate the ways to find the buildings data and create model buildings
with it.
'''
for key, value in self.osm_ways.iteritems():
tags = value['tags']
if 'building' in tags:
vertices = []
for ref in value['refs']:
ref_lat = self.osm_coords[ref]['lat']
ref_lon = self.osm_coords[ref]['lon']
ref_pair = LatLon(ref_lat, ref_lon)
vertex = self._translate_coords(ref_pair)
vertices.append(vertex)
if 'height' in value:
height = value['height']
else:
height = 20
building = Building(Point(0, 0, 0), vertices, height=height)
city.add_building(building)
def test_sum(self):
point = LatLon(1, 2)
point_to_sum = LatLon(3, 4)
expected_result = LatLon(4, 6)
self.assertEqual(point.sum(point_to_sum), expected_result)
def test_normalize_on_creation(self):
# bad lat and lon
self.assertEqual(LatLon(100, 190).lat, 80)
self.assertEqual(LatLon(100, 190).lon, 10)
# lon = -180
self.assertEqual(LatLon(25, -180).lat, 25)
self.assertEqual(LatLon(25, -180).lon, 180)
# already normalized point
self.assertEqual(LatLon(45, 90).lat, 45)
self.assertEqual(LatLon(45, 90).lon, 90)
# lat = lon = 360
self.assertEqual(LatLon(360, 360).lat, 0)
self.assertEqual(LatLon(360, 360).lon, 0)
# negative lat ad lon
self.assertEqual(LatLon(-100, -30).lat, -80)
self.assertEqual(LatLon(-100, -30).lon, 150)
# normalize to negative lat and lon values
self.assertEqual(LatLon(190, 30).lat, -10)
self.assertEqual(LatLon(190, 30).lon, -150)
def test_eq_in_south_pole(self):
point_at_south_pole = LatLon(-90, 27)
point_at_south_pole_with_different_longitude = LatLon(-90, 3)
self.assertEqual(point_at_south_pole,
point_at_south_pole_with_different_longitude)
def test_eq_in_north_pole(self):
point_at_north_pole = LatLon(90, 7)
point_at_north_pole_with_different_longitude = LatLon(90, 54)
self.assertEqual(point_at_north_pole,
point_at_north_pole_with_different_longitude)
def test_eq_between_maximal_and_minimal_longitude(self):
point_with_lon_180 = LatLon(25, 180)
point_with_same_lat_and_lon_minus180 = LatLon(25, -180)
self.assertEqual(point_with_lon_180,
point_with_same_lat_and_lon_minus180)
def _generate_rndf(self, city):
self.generator = RNDFGenerator(city, LatLon(10, 65))
self.generated_contents = self.generator.generate()
def test_eq_on_different_objects(self):
point = LatLon(0, 0)
different_point = LatLon(1, 2)
self.assertFalse(point == different_point)
def test_eq_on_non_identical_objects(self):
point = LatLon(0, 0)
other_point_with_same_lat_and_lon = LatLon(0, 0)
self.assertTrue(point == other_point_with_same_lat_and_lon)
def test_eq_on_identical_objects(self):
point = LatLon(0, 0)
self.assertTrue(point == point)
def test_sum_exceeding_maximal_latitud(self):
point = LatLon(45, 30)
point_to_sum = LatLon(60, 20)
expected_result = LatLon(75, -130)
self.assertEqual(point.sum(point_to_sum), expected_result)
def test_is_inside(self):
# when it is inside
self.assertTrue(
LatLon(0, 0).is_inside(LatLon(-10, -10), LatLon(10, 10)))
self.assertTrue(
LatLon(0, 180).is_inside(LatLon(-10, -170), LatLon(10, 170)))
# when it is not inside
self.assertIsNone(
LatLon(0, 0).is_inside(LatLon(-20, -20), LatLon(-40, -40)))
self.assertIsNone(
LatLon(30, 45).is_inside(LatLon(40, 40), LatLon(20, 10)))
def test_midpoint_of_equal_points(self):
self.assertEqual(
LatLon(35, 80).midpoint(LatLon(35, 80)), LatLon(35, 80))
self.assertEqual(
LatLon(40, 165).midpoint(LatLon(40, 165)), LatLon(40, 165))
def test_midpoint_of_points_on_the_same_parallel(self):
self.assertEqual(
LatLon(30, -110).midpoint(LatLon(30, -90)), LatLon(30, -100))
def test_midpoint_of_points_on_the_same_meridian(self):
self.assertEqual(
LatLon(-10, 80).midpoint(LatLon(-30, 80)), LatLon(-20, 80))
def test_translate_zero(self):
point = LatLon(35, 20)
self.assertEqual(point, point.translate((0, 0)))