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test_coordinates.py
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test_coordinates.py
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#!/usr/bin/env python3
import numpy as np
import unittest
import openpilot.common.transformations.coordinates as coord
geodetic_positions = np.array([[37.7610403, -122.4778699, 115],
[27.4840915, -68.5867592, 2380],
[32.4916858, -113.652821, -6],
[15.1392514, 103.6976037, 24],
[24.2302229, 44.2835412, 1650]])
ecef_positions = np.array([[-2711076.55270557, -4259167.14692758, 3884579.87669935],
[ 2068042.69652729, -5273435.40316622, 2927004.89190746],
[-2160412.60461669, -4932588.89873832, 3406542.29652851],
[-1458247.92550567, 5983060.87496612, 1654984.6099885 ],
[ 4167239.10867871, 4064301.90363223, 2602234.6065749 ]])
ecef_positions_offset = np.array([[-2711004.46961115, -4259099.33540613, 3884605.16002147],
[ 2068074.30639499, -5273413.78835412, 2927012.48741131],
[-2160344.53748176, -4932586.20092211, 3406636.2962545 ],
[-1458211.98517094, 5983151.11161276, 1655077.02698447],
[ 4167271.20055269, 4064398.22619263, 2602238.95265847]])
ned_offsets = np.array([[78.722153649976391, 24.396208657446344, 60.343017506838436],
[10.699003365155221, 37.319278617604269, 4.1084100025050407],
[95.282646251726959, 61.266689955574428, -25.376506058505054],
[68.535769283630003, -56.285970011848889, -100.54840137956515],
[-33.066609321880179, 46.549821994306861, -84.062540548335591]])
ecef_init_batch = np.array([2068042.69652729, -5273435.40316622, 2927004.89190746])
ecef_positions_offset_batch = np.array([[ 2068089.41454771, -5273434.46829148, 2927074.04783672],
[ 2068103.31628647, -5273393.92275431, 2927102.08725987],
[ 2068108.49939636, -5273359.27047121, 2927045.07091581],
[ 2068075.12395611, -5273381.69432566, 2927041.08207992],
[ 2068060.72033399, -5273430.6061505, 2927094.54928305]])
ned_offsets_batch = np.array([[ 53.88103168, 43.83445935, -46.27488057],
[ 93.83378995, 71.57943024, -30.23113187],
[ 57.26725796, 89.05602684, 23.02265814],
[ 49.71775195, 49.79767572, 17.15351015],
[ 78.56272609, 18.53100158, -43.25290759]])
class TestNED(unittest.TestCase):
def test_small_distances(self):
start_geodetic = np.array([33.8042184, -117.888593, 0.0])
local_coord = coord.LocalCoord.from_geodetic(start_geodetic)
start_ned = local_coord.geodetic2ned(start_geodetic)
np.testing.assert_array_equal(start_ned, np.zeros(3,))
west_geodetic = start_geodetic + [0, -0.0005, 0]
west_ned = local_coord.geodetic2ned(west_geodetic)
self.assertLess(np.abs(west_ned[0]), 1e-3)
self.assertLess(west_ned[1], 0)
southwest_geodetic = start_geodetic + [-0.0005, -0.002, 0]
southwest_ned = local_coord.geodetic2ned(southwest_geodetic)
self.assertLess(southwest_ned[0], 0)
self.assertLess(southwest_ned[1], 0)
def test_ecef_geodetic(self):
# testing single
np.testing.assert_allclose(ecef_positions[0], coord.geodetic2ecef(geodetic_positions[0]), rtol=1e-9)
np.testing.assert_allclose(geodetic_positions[0, :2], coord.ecef2geodetic(ecef_positions[0])[:2], rtol=1e-9)
np.testing.assert_allclose(geodetic_positions[0, 2], coord.ecef2geodetic(ecef_positions[0])[2], rtol=1e-9, atol=1e-4)
np.testing.assert_allclose(geodetic_positions[:, :2], coord.ecef2geodetic(ecef_positions)[:, :2], rtol=1e-9)
np.testing.assert_allclose(geodetic_positions[:, 2], coord.ecef2geodetic(ecef_positions)[:, 2], rtol=1e-9, atol=1e-4)
np.testing.assert_allclose(ecef_positions, coord.geodetic2ecef(geodetic_positions), rtol=1e-9)
def test_ned(self):
for ecef_pos in ecef_positions:
converter = coord.LocalCoord.from_ecef(ecef_pos)
ecef_pos_moved = ecef_pos + [25, -25, 25]
ecef_pos_moved_double_converted = converter.ned2ecef(converter.ecef2ned(ecef_pos_moved))
np.testing.assert_allclose(ecef_pos_moved, ecef_pos_moved_double_converted, rtol=1e-9)
for geo_pos in geodetic_positions:
converter = coord.LocalCoord.from_geodetic(geo_pos)
geo_pos_moved = geo_pos + np.array([0, 0, 10])
geo_pos_double_converted_moved = converter.ned2geodetic(converter.geodetic2ned(geo_pos) + np.array([0, 0, -10]))
np.testing.assert_allclose(geo_pos_moved[:2], geo_pos_double_converted_moved[:2], rtol=1e-9, atol=1e-6)
np.testing.assert_allclose(geo_pos_moved[2], geo_pos_double_converted_moved[2], rtol=1e-9, atol=1e-4)
def test_ned_saved_results(self):
for i, ecef_pos in enumerate(ecef_positions):
converter = coord.LocalCoord.from_ecef(ecef_pos)
np.testing.assert_allclose(converter.ned2ecef(ned_offsets[i]),
ecef_positions_offset[i],
rtol=1e-9, atol=1e-4)
np.testing.assert_allclose(converter.ecef2ned(ecef_positions_offset[i]),
ned_offsets[i],
rtol=1e-9, atol=1e-4)
def test_ned_batch(self):
converter = coord.LocalCoord.from_ecef(ecef_init_batch)
np.testing.assert_allclose(converter.ecef2ned(ecef_positions_offset_batch),
ned_offsets_batch,
rtol=1e-9, atol=1e-7)
np.testing.assert_allclose(converter.ned2ecef(ned_offsets_batch),
ecef_positions_offset_batch,
rtol=1e-9, atol=1e-7)
if __name__ == "__main__":
unittest.main()