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from fontTools.misc.transform import Transform, Identity, Offset, Scale
import math
import pytest
class TransformTest(object):
def test_examples(self):
t = Transform()
assert repr(t) == "<Transform [1 0 0 1 0 0]>"
assert t.scale(2) == Transform(2, 0, 0, 2, 0, 0)
assert t.scale(2.5, 5.5) == Transform(2.5, 0, 0, 5.5, 0, 0)
assert t.scale(2, 3).transformPoint((100, 100)) == (200, 300)
def test__init__(self):
assert Transform(12) == Transform(12, 0, 0, 1, 0, 0)
assert Transform(dx=12) == Transform(1, 0, 0, 1, 12, 0)
assert Transform(yx=12) == Transform(1, 0, 12, 1, 0, 0)
def test_transformPoints(self):
t = Transform(2, 0, 0, 3, 0, 0)
assert t.transformPoints(
[(0, 0), (0, 100), (100, 100), (100, 0)]
) == [(0, 0), (0, 300), (200, 300), (200, 0)]
def test_transformVector(self):
t = Transform(2, 0, 0, 3, -10, 30)
assert t.transformVector((-4, 5)) == (-8, 15)
def test_transformVectors(self):
t = Transform(2, 0, 0, 3, -10, 30)
assert t.transformVectors([(-4, 5), (-6, 7)]) == [(-8, 15), (-12, 21)]
def test_translate(self):
t = Transform()
assert t.translate(20, 30) == Transform(1, 0, 0, 1, 20, 30)
def test_scale(self):
t = Transform()
assert t.scale(5) == Transform(5, 0, 0, 5, 0, 0)
assert t.scale(5, 6) == Transform(5, 0, 0, 6, 0, 0)
def test_rotate(self):
t = Transform()
assert t.rotate(math.pi / 2) == Transform(0, 1, -1, 0, 0, 0)
t = Transform()
assert t.rotate(-math.pi / 2) == Transform(0, -1, 1, 0, 0, 0)
t = Transform()
assert tuple(t.rotate(math.radians(30))) == pytest.approx(
tuple(Transform(0.866025, 0.5, -0.5, 0.866025, 0, 0)))
def test_skew(self):
t = Transform().skew(math.pi / 4)
assert tuple(t) == pytest.approx(tuple(Transform(1, 0, 1, 1, 0, 0)))
def test_transform(self):
t = Transform(2, 0, 0, 3, 1, 6)
assert t.transform((4, 3, 2, 1, 5, 6)) == Transform(8, 9, 4, 3, 11, 24)
def test_reverseTransform(self):
t = Transform(2, 0, 0, 3, 1, 6)
reverse_t = t.reverseTransform((4, 3, 2, 1, 5, 6))
assert reverse_t == Transform(8, 6, 6, 3, 21, 15)
t = Transform(4, 3, 2, 1, 5, 6)
reverse_t = t.transform((2, 0, 0, 3, 1, 6))
assert reverse_t == Transform(8, 6, 6, 3, 21, 15)
def test_inverse(self):
t = Transform().translate(2, 3).scale(4, 5)
assert t.transformPoint((10, 20)) == (42, 103)
it = t.inverse()
assert it.transformPoint((42, 103)) == (10.0, 20.0)
assert Transform().inverse() == Transform()
def test_toPS(self):
t = Transform().scale(2, 3).translate(4, 5)
assert t.toPS() == '[2 0 0 3 8 15]'
def test__ne__(self):
assert Transform() != Transform(2, 0, 0, 2, 0, 0)
def test__hash__(self):
t = Transform(12, 0, 0, 13, 0, 0)
d = {t: None}
assert t in d.keys()
def test__bool__(self):
assert not bool(Transform())
assert Transform(2, 0, 0, 2, 0, 0)
assert Transform(1, 0, 0, 1, 1, 0)
def test__repr__(self):
assert repr(Transform(1, 2, 3, 4, 5, 6)) == '<Transform [1 2 3 4 5 6]>'
def test_Identity(self):
assert isinstance(Identity, Transform)
assert Identity == Transform(1, 0, 0, 1, 0, 0)
def test_Offset(self):
assert Offset() == Transform(1, 0, 0, 1, 0, 0)
assert Offset(1) == Transform(1, 0, 0, 1, 1, 0)
assert Offset(1, 2) == Transform(1, 0, 0, 1, 1, 2)
def test_Scale(self):
assert Scale(1) == Transform(1, 0, 0, 1, 0, 0)
assert Scale(2) == Transform(2, 0, 0, 2, 0, 0)
assert Scale(1, 2) == Transform(1, 0, 0, 2, 0, 0)
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