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