map-machine/test/test_flinger.py
2021-05-29 15:36:03 +03:00

32 lines
754 B
Python

"""
Test coordinates computation.
"""
import numpy as np
from roentgen.flinger import (
pseudo_mercator,
osm_zoom_level_to_pixels_per_meter,
)
__author__ = "Sergey Vartanov"
__email__ = "me@enzet.ru"
def test_pseudo_mercator() -> None:
"""
Test pseudo-Mercator projection.
"""
assert np.allclose(pseudo_mercator(np.array((0, 0))), np.array((0, 0)))
assert np.allclose(pseudo_mercator(np.array((0, 10))), np.array((10, 0)))
assert np.allclose(
pseudo_mercator(np.array((10, 0))), np.array((0, 10.05115966))
)
def test_osm_zoom_level_to_pixels_per_meter() -> None:
"""
Test scale computation.
"""
assert np.allclose(
osm_zoom_level_to_pixels_per_meter(18), 1.6759517949045808
)