111 lines
3.3 KiB
Python
111 lines
3.3 KiB
Python
# Copyright 2023 Behdad Esfahbod. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import unittest
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import pytest
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from fontTools.qu2cu import quadratic_to_curves, quadratics_to_curves
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from fontTools.qu2cu.qu2cu import main as qu2cu_main
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from fontTools.qu2cu.benchmark import main as benchmark_main
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import os
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import json
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from fontTools.cu2qu import curve_to_quadratic
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class Qu2CuTest:
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@pytest.mark.parametrize(
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"quadratics, expected, tolerance, cubic_only",
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[
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(
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[
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[(0, 0), (0, 1), (2, 1), (2, 0)],
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],
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[
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((0, 0), (0, 4 / 3), (2, 4 / 3), (2, 0)),
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],
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0.1,
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True,
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),
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(
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[
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[(0, 0), (0, 1), (2, 1), (2, 2)],
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],
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[
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((0, 0), (0, 4 / 3), (2, 2 / 3), (2, 2)),
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],
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0.2,
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True,
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),
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(
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[
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[(0, 0), (0, 1), (1, 1)],
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[(1, 1), (3, 1), (3, 0)],
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],
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[
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((0, 0), (0, 1), (1, 1)),
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((1, 1), (3, 1), (3, 0)),
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],
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0.2,
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False,
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),
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(
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[
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[(0, 0), (0, 1), (1, 1)],
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[(1, 1), (3, 1), (3, 0)],
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],
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[
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((0, 0), (0, 2 / 3), (1 / 3, 1), (1, 1)),
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((1, 1), (7 / 3, 1), (3, 2 / 3), (3, 0)),
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],
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0.2,
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True,
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),
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],
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)
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def test_simple(self, quadratics, expected, tolerance, cubic_only):
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expected = [
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tuple((pytest.approx(p[0]), pytest.approx(p[1])) for p in curve)
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for curve in expected
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]
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if len(quadratics) == 1:
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c = quadratic_to_curves(quadratics[0], tolerance, cubic_only)
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assert c == expected
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c = quadratics_to_curves(quadratics, tolerance, cubic_only)
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assert c == expected
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def test_roundtrip(self):
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DATADIR = os.path.join(os.path.dirname(__file__), "..", "cu2qu", "data")
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with open(os.path.join(DATADIR, "curves.json"), "r") as fp:
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curves = json.load(fp)
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tolerance = 1
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splines = [curve_to_quadratic(c, tolerance) for c in curves]
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reconsts = [quadratic_to_curves(spline, tolerance) for spline in splines]
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for curve, reconst in zip(curves, reconsts):
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assert len(reconst) == 1
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curve = tuple((pytest.approx(p[0]), pytest.approx(p[1])) for p in curve)
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assert curve == reconst[0]
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def test_main(self):
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# Just for coverage
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qu2cu_main()
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benchmark_main()
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