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34 lines
900 B
Python
34 lines
900 B
Python
import numpy as np
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from pipeline.vectorize import rdp, rasterize, trace
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def test_rdp_drops_collinear_point():
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pts = [(0, 0), (1, 0), (2, 0)]
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assert rdp(pts, 0.5) == [(0, 0), (2, 0)]
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def test_rasterize_square():
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poly = [[(1, 1), (4, 1), (4, 4), (1, 4), (1, 1)]]
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out = rasterize([poly], 6, 6)
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assert out[2, 2]
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assert not out[0, 0]
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def test_rasterize_square_with_hole():
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outer = [(1, 1), (5, 1), (5, 5), (1, 5), (1, 1)]
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hole = [(2, 2), (2, 4), (4, 4), (4, 2), (2, 2)]
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out = rasterize([[outer, hole]], 7, 7)
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assert out[3, 1]
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assert not out[3, 3]
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def test_trace_simple_shape_and_roundtrip():
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mask = np.zeros((16, 16), dtype=bool)
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mask[4:12, 4:12] = True
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polys = trace(mask, {"rdp_epsilon": 1.0, "min_segment": 2})
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assert len(polys) >= 1
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roundtrip = rasterize(polys, 16, 16)
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assert roundtrip[6, 6]
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assert not roundtrip[0, 0]
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