def test_multiple_segments(self):
p = Path()
p.curve4_to((4, 0), (1, 2), (3, 2))
p.line_to((6, 0))
p.curve3_to((8, 0), (7, 1))
result = list(to_bsplines_and_vertices(p))
assert len(result) == 3, "expected three segments"
def test_approximate_curves():
path = Path()
path.curve3_to((2, 0), (1, 1))
path.curve4_to((3, 0), (2, 1), (3, 1))
vertices = list(path.approximate(20))
assert len(vertices) == 41
assert vertices[0] == (0, 0)
assert vertices[-1] == (3, 0)
def test_one_path_curve4_to(self):
path = Path()
path.curve4_to((2, 0), (0, 1), (2, 1))
result = transform_paths([path], Matrix44())
path0 = result[0]
assert path0[0].type == Command.CURVE4_TO
assert len(path0[0]) == 3
assert path0.start == (0, 0)
assert path0.end == (2, 0)
def test_has_clockwise_orientation():
# basic has_clockwise_orientation() function is tested in:
# test_617_clockwise_orientation
path = converter.from_vertices([(0, 0), (1, 0), (1, 1), (0, 1)])
assert path.has_clockwise_orientation() is False
path = Path()
path.line_to((2, 0))
path.curve4_to((4, 0), (2, 1), (4, 1)) # end, ctrl1, ctrl2
assert path.has_clockwise_orientation() is True
def test_one_path_multiple_command(self):
path = Path()
path.line_to((1, 0))
path.curve3_to((2, 0), (2.5, 1))
path.curve4_to((3, 0), (2, 1), (3, 1))
result = transform_paths([path], Matrix44())
path0 = result[0]
assert path0[0].type == Command.LINE_TO
assert path0[1].type == Command.CURVE3_TO
assert path0[2].type == Command.CURVE4_TO
assert path0.start == (0, 0)
assert path0.end == (3, 0)
def test_two_paths_multiple_commands(self):
path_a = Path()
path_a.line_to((1, 0))
path_a.curve3_to((2, 0), (2.5, 1))
path_a.curve4_to((3, 0), (2, 1), (3, 1))
path_b = path_a.transform(Matrix44.translate(4, 0, 0))
result = transform_paths([path_a, path_b], Matrix44())
path0 = result[0]
assert path0[0].type == Command.LINE_TO
assert path0[1].type == Command.CURVE3_TO
assert path0[2].type == Command.CURVE4_TO
assert path0.start == (0, 0)
assert path0.end == (3, 0)
path1 = result[1]
assert path1[0].type == Command.LINE_TO
assert path1[1].type == Command.CURVE3_TO
assert path1[2].type == Command.CURVE4_TO
assert path1.start == (4, 0)
assert path1.end == (7, 0)
def test_reversing_one_curve4():
p = Path()
p.curve4_to((3, 0), (1, 1), (2, 1))
p2 = list(p.reversed().control_vertices())
assert p2 == [(3, 0), (2, 1), (1, 1), (0, 0)]
def p1():
path = Path()
path.line_to((2, 0))
path.curve4_to((4, 0), (2, 1), (4, 1)) # end, ctrl1, ctrl2
path.curve3_to((6, 0), (5, -1)) # end, ctrl
return path
def test_curve4_to():
path = Path()
path.curve4_to((1, 2, 3), (0, 1, 0), (0, 2, 0))
assert path[0] == ((1, 2, 3), (0, 1, 0), (0, 2, 0))
assert path.end == (1, 2, 3)
def path1(self):
p = Path((0, 0, 1))
p.curve4_to((4, 0, 1), (1, 1, 1), (3, 1, 1))
return p
def path(self):
p = Path()
p.line_to((4, 0, 0))
p.curve4_to((0, 0, 0), (3, 1, 1), (1, 1, 1))
return p
def test_adjacent_cubic_beziers_without_G1_continuity(self):
p = Path()
p.curve4_to((4, 0), (1, 2), (3, 2))
p.curve4_to((8, 0), (5, 2), (7, 2))
result = list(to_bsplines_and_vertices(p))
assert len(result) == 2, "expected two B-splines"
def test_one_cubic_bezier(self):
p = Path()
p.curve4_to((4, 0), (1, 2), (3, 2))
result = list(to_bsplines_and_vertices(p))
assert len(result) == 1, "expected one B-spline"
