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from typing import cast
import pytest
import shapely.affinity
import shapely.geometry
from shapely.geometry import MultiPolygon, Point, Polygon
import antimeridian
from antimeridian import FixWindingWarning
from .conftest import Reader
@pytest.mark.parametrize(
("name"),
[
"almost-180",
"complex-split",
"crossing-latitude",
"extra-crossing",
"issues-171",
"issues-187",
"issues-81",
"latitude-band",
"north-pole",
"one-hole",
"over-180",
"overlap",
"point-on-antimeridian",
"simple",
"south-pole",
"split",
"two-holes",
],
)
@pytest.mark.parametrize(
"subdirectory,great_circle",
[("flat", False), ("spherical", True)],
)
def test_fix_polygon(
name: str,
read_input: Reader,
read_output: Reader,
subdirectory: str,
great_circle: bool,
) -> None:
input = read_input(name)
assert isinstance(input, Polygon)
output = read_output(name, subdirectory)
assert isinstance(input, Polygon) or isinstance(input, MultiPolygon)
fixed = antimeridian.fix_polygon(input, great_circle=great_circle).normalize()
assert fixed == output.normalize()
@pytest.mark.parametrize(
"subdirectory,great_circle",
[("flat", False), ("spherical", True)],
)
def test_both_poles(
read_input: Reader, read_output: Reader, subdirectory: str, great_circle: bool
) -> None:
input = read_input("both-poles")
assert isinstance(input, Polygon)
output = read_output("both-poles", subdirectory)
assert isinstance(input, Polygon)
fixed = antimeridian.fix_polygon(
input, fix_winding=False, great_circle=great_circle
).normalize()
assert fixed == output.normalize()
def test_fix_shape(read_input: Reader) -> None:
# Just a smoke test
input = shapely.geometry.mapping(read_input("simple"))
antimeridian.fix_shape(input)
@pytest.mark.parametrize(
"subdirectory,great_circle",
[("flat", False), ("spherical", True)],
)
def test_double_fix(
read_input: Reader,
read_output: Reader,
subdirectory: str,
great_circle: bool,
) -> None:
input = read_input("north-pole")
output = read_output("north-pole", subdirectory)
fixed = antimeridian.fix_polygon(input, great_circle=great_circle)
fixed = antimeridian.fix_polygon(fixed, great_circle=great_circle)
assert fixed.normalize() == output.normalize()
@pytest.mark.parametrize(
"subdirectory,great_circle",
[("flat", False), ("spherical", True)],
)
def test_force_north_pole(
read_input: Reader, read_output: Reader, subdirectory: str, great_circle: bool
) -> None:
input = read_input("force-north-pole")
output = read_output("force-north-pole", subdirectory)
fixed = antimeridian.fix_polygon(
input, force_north_pole=True, great_circle=great_circle
)
assert fixed.normalize() == output.normalize()
@pytest.mark.parametrize("minx,maxx", [(-180, -170), (170, 180)])
def test_dont_segment_antimeridian_overlap(minx: float, maxx: float) -> None:
shape = shapely.geometry.box(minx=minx, miny=-10, maxx=maxx, maxy=10)
fixed = antimeridian.fix_polygon(shape)
assert fixed.geom_type == "Polygon"
@pytest.mark.parametrize("name", ("cw-only", "cw-split", "issues-174", "issues-201"))
@pytest.mark.parametrize(
"subdirectory,great_circle",
[("flat", False), ("spherical", True)],
)
def test_fix_winding(
read_input: Reader,
read_output: Reader,
name: str,
subdirectory: str,
great_circle: bool,
) -> None:
input = read_input(name)
output = read_output(name, subdirectory)
with pytest.warns(FixWindingWarning):
fixed = antimeridian.fix_polygon(input, great_circle=great_circle)
assert fixed.normalize() == output.normalize()
@pytest.mark.parametrize("name", ("cw-only", "cw-split"))
@pytest.mark.parametrize(
"subdirectory,great_circle",
[("flat", False), ("spherical", True)],
)
def test_no_fix_winding(
read_input: Reader,
read_output: Reader,
name: str,
subdirectory: str,
great_circle: bool,
) -> None:
input = read_input(name)
output = read_output(f"{name}-no-fix", subdirectory)
fixed = antimeridian.fix_polygon(
input, fix_winding=False, great_circle=great_circle
)
assert fixed.normalize() == output.normalize()
@pytest.mark.parametrize("name", ("cw-only", "cw-split"))
@pytest.mark.parametrize(
"force_north_pole,force_south_pole", [(True, False), (False, True), (True, True)]
)
@pytest.mark.parametrize(
"subdirectory,great_circle",
[("flat", False), ("spherical", True)],
)
def test_no_fix_winding_when_forcing_poles(
read_input: Reader,
read_output: Reader,
name: str,
force_north_pole: bool,
force_south_pole: bool,
subdirectory: str,
great_circle: bool,
) -> None:
input = read_input(name)
output = read_output(f"{name}-no-fix", subdirectory)
fixed = antimeridian.fix_polygon(
input,
force_north_pole=force_north_pole,
force_south_pole=force_south_pole,
great_circle=great_circle,
)
assert fixed.normalize() == output.normalize()
def test_fix_winding_interior_no_segments(read_input: Reader) -> None:
input = read_input("simple-with-ccw-hole")
with pytest.warns(FixWindingWarning):
fixed = antimeridian.fix_polygon(input)
assert all(not shapely.is_ccw(interior) for interior in fixed.interiors)
def test_fix_winding_interior_segments(read_input: Reader, read_output: Reader) -> None:
input = read_input("one-ccw-hole")
output = read_output("one-hole", "spherical")
with pytest.warns(FixWindingWarning):
fixed = antimeridian.fix_polygon(input)
assert fixed.normalize() == output.normalize()
def test_centroid_simple(read_input: Reader) -> None:
input = read_input("simple")
centroid = cast(Point, antimeridian.centroid(input))
assert centroid.x == 95
assert centroid.y == 45
def test_centroid_split(read_output: Reader) -> None:
input = read_output("split")
centroid = cast(Point, antimeridian.centroid(input))
assert centroid.x == 180
assert centroid.y == 45
def test_centroid_split_with_shift(read_input: Reader) -> None:
input = read_input("split")
input = shapely.affinity.translate(input, xoff=+1)
input = antimeridian.fix_polygon(input, great_circle=False)
centroid = cast(Point, antimeridian.centroid(input))
assert centroid.x == -179
assert centroid.y == 45
def test_z_coordinates() -> None:
# https://github.com/gadomski/antimeridian/issues/115
polygon = Polygon([[0, 0, 1], [10, 0, 2], [10, 10, 3], [0, 10, 4]])
fixed = antimeridian.fix_polygon(polygon)
assert fixed.has_z
@pytest.mark.parametrize(
"subdirectory,great_circle",
[("flat", False), ("spherical", True)],
)
def test_force_south_pole(
read_input: Reader, read_output: Reader, subdirectory: str, great_circle: bool
) -> None:
# https://github.com/gadomski/antimeridian/issues/124
input = read_input("issues-124")
output = read_output("issues-124", subdirectory)
fixed = antimeridian.fix_polygon(
input, force_south_pole=True, great_circle=great_circle
)
assert fixed.normalize() == output.normalize()
@pytest.mark.parametrize(
"subdirectory,great_circle", (("flat", False), ("spherical", True))
)
def test_great_circle(
read_input: Reader, read_output: Reader, subdirectory: str, great_circle: bool
) -> None:
# https://github.com/gadomski/antimeridian/issues/153
input = read_input("great-circle")
output = read_output("great-circle", subdirectory)
fixed = antimeridian.fix_polygon(input, great_circle=great_circle)
assert fixed.normalize() == output.normalize()
def test_invalid_polygon(read_input: Reader) -> None:
input = read_input("issues-182")
with pytest.warns(FixWindingWarning):
with pytest.raises(ValueError):
antimeridian.fix_polygon(input)
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