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# Copyright (c) 2021-2023, Manfred Moitzi
# License: MIT License
import pytest
pytest.importorskip("PySide6")
from ezdxf import path
from ezdxf.math import quadratic_to_cubic_bezier, Bezier3P, Vec2
from ezdxf import npshapes
class TestNumpyPath2dToQPainterPath:
def test_no_paths(self):
with pytest.raises(ValueError):
npshapes.to_qpainter_path([])
def test_line_to(self):
p = path.Path()
p.line_to((4, 5, 6))
p.line_to((7, 8, 6))
qpath = npshapes.to_qpainter_path([npshapes.NumpyPath2d(p)])
assert qpath.elementCount() == 3
m = qpath.elementAt(0)
assert m.isMoveTo() is True
assert (m.x, m.y) == (0, 0)
l1 = qpath.elementAt(1)
assert l1.isLineTo() is True
assert (l1.x, l1.y) == (4, 5)
l2 = qpath.elementAt(2)
assert l2.isLineTo() is True
assert (l2.x, l2.y) == (7, 8)
def test_curve3_to(self):
bez3 = Bezier3P(Vec2.list([(0, 0), (2, 1), (4, 0)]))
p = path.Path()
p.curve3_to(bez3.control_points[2], bez3.control_points[1])
qpath = npshapes.to_qpainter_path([npshapes.NumpyPath2d(p)])
# Qt converts quadratic bezier curves unto cubic bezier curves
assert qpath.elementCount() == 4
bez4 = quadratic_to_cubic_bezier(bez3)
q1 = qpath.elementAt(1)
assert q1.isCurveTo() # start of cure
assert q1.x, q1.y == bez4.control_points[1]
q2 = qpath.elementAt(2)
assert q2.x, q2.y == bez4.control_points[2]
q3 = qpath.elementAt(3)
assert q3.x, q3.y == bez4.control_points[2]
def test_curve4_to(self):
bez4 = [(4, 0, 2), (1, 1, 7), (3, 1, 5)]
p = path.Path()
p.curve4_to(*bez4)
qpath = npshapes.to_qpainter_path([npshapes.NumpyPath2d(p)])
assert qpath.elementCount() == 4
q1 = qpath.elementAt(1)
assert q1.isCurveTo() # start of cure
assert q1.x, q1.y == bez4[1]
q2 = qpath.elementAt(2)
assert q2.x, q2.y == bez4[2]
q3 = qpath.elementAt(3)
assert q3.x, q3.y == bez4[0]
def test_two_single_paths(self):
p1 = path.Path()
p1.line_to((4, 5, 6))
p2 = path.Path()
p2.line_to((7, 8, 6))
qpath = npshapes.to_qpainter_path(
[npshapes.NumpyPath2d(p1), npshapes.NumpyPath2d(p2)]
)
assert qpath.elementCount() == 4
assert qpath.elementAt(0).isMoveTo() is True
assert qpath.elementAt(1).isLineTo() is True
assert qpath.elementAt(2).isMoveTo() is True
assert qpath.elementAt(3).isLineTo() is True
def test_one_multi_paths(self):
p = path.Path()
p.line_to((4, 5, 6))
p.move_to((0, 0, 0))
p.line_to((7, 8, 6))
qpath = npshapes.to_qpainter_path([npshapes.NumpyPath2d(p)])
assert qpath.elementCount() == 4
assert qpath.elementAt(0).isMoveTo() is True
assert qpath.elementAt(1).isLineTo() is True
assert qpath.elementAt(2).isMoveTo() is True
assert qpath.elementAt(3).isLineTo() is True
if __name__ == "__main__":
pytest.main([__file__])
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