66 lines
2.4 KiB
Python
66 lines
2.4 KiB
Python
import numpy as np
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import pytest
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from shapely.geometry import Point, Polygon
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from shapely.prepared import PreparedGeometry, prep
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def test_prepared_geometry():
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polygon = Polygon([(0, 0), (1, 0), (1, 1), (0, 1)])
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p = PreparedGeometry(polygon)
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assert p.contains(Point(0.5, 0.5))
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assert not p.contains(Point(0.5, 1.5))
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def test_prep():
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polygon = Polygon([(0, 0), (1, 0), (1, 1), (0, 1)])
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p = prep(polygon)
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assert p.contains(Point(0.5, 0.5))
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assert not p.contains(Point(0.5, 1.5))
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def test_op_not_allowed():
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p = PreparedGeometry(Point(0.0, 0.0).buffer(1.0))
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with pytest.raises(TypeError):
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Point(0.0, 0.0).union(p)
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def test_predicate_not_allowed():
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p = PreparedGeometry(Point(0.0, 0.0).buffer(1.0))
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with pytest.raises(TypeError):
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Point(0.0, 0.0).contains(p)
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def test_prepared_predicates():
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# check prepared predicates give the same result as regular predicates
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polygon1 = Polygon([(0, 0), (0, 1), (1, 1), (1, 0), (0, 0)])
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polygon2 = Polygon([(0.5, 0.5), (1.5, 0.5), (1.0, 1.0), (0.5, 0.5)])
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point2 = Point(0.5, 0.5)
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polygon_empty = Polygon()
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prepared_polygon1 = PreparedGeometry(polygon1)
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for geom2 in (polygon2, point2, polygon_empty):
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with np.errstate(invalid="ignore"):
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assert polygon1.disjoint(geom2) == prepared_polygon1.disjoint(geom2)
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assert polygon1.touches(geom2) == prepared_polygon1.touches(geom2)
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assert polygon1.intersects(geom2) == prepared_polygon1.intersects(geom2)
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assert polygon1.crosses(geom2) == prepared_polygon1.crosses(geom2)
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assert polygon1.within(geom2) == prepared_polygon1.within(geom2)
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assert polygon1.contains(geom2) == prepared_polygon1.contains(geom2)
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assert polygon1.contains_properly(
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geom2
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) == prepared_polygon1.contains_properly(geom2)
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assert polygon1.overlaps(geom2) == prepared_polygon1.overlaps(geom2)
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def test_prepare_already_prepared():
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polygon = Polygon([(0, 0), (1, 0), (1, 1), (0, 1)])
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prepared = prep(polygon)
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# attempt to prepare an already prepared geometry with `prep`
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result = prep(prepared)
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assert isinstance(result, PreparedGeometry)
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assert result.context is polygon
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# attempt to prepare an already prepared geometry with `PreparedGeometry`
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result = PreparedGeometry(prepared)
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assert isinstance(result, PreparedGeometry)
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assert result.context is polygon
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