blob: 7a7a67dcaf0e021881ef4a5ba16f57d6fbffa5f6 [file] [log] [blame]
 from __future__ import print_function, division, absolute_import from fontTools.misc.py23 import * 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) == "" 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_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)) == '' 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)