add tests for parsing SVG arcs
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@ -290,8 +290,67 @@ def test_invalid_implicit_command():
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assert exc_info.match("Unallowed implicit command")
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def test_arc_not_implemented():
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pathdef = "M300,200 h-150 a150,150 0 1,0 150,-150 z"
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with pytest.raises(NotImplementedError) as exc_info:
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parse_path(pathdef, RecordingPen())
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assert exc_info.match("arcs are not supported")
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def test_arc_to_cubic_bezier():
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pen = RecordingPen()
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parse_path("M300,200 h-150 a150,150 0 1,0 150,-150 z", pen)
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expected = [
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('moveTo', ((300.0, 200.0),)),
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('lineTo', ((150.0, 200.0),)),
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(
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'curveTo',
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(
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(150.0, 282.842),
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(217.157, 350.0),
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(300.0, 350.0)
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)
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),
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(
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'curveTo',
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(
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(382.842, 350.0),
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(450.0, 282.842),
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(450.0, 200.0)
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)
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),
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(
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'curveTo',
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(
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(450.0, 117.157),
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(382.842, 50.0),
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(300.0, 50.0)
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)
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),
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('lineTo', ((300.0, 200.0),)),
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('closePath', ())
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]
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result = list(pen.value)
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assert len(result) == len(expected)
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for (cmd1, points1), (cmd2, points2) in zip(result, expected):
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assert cmd1 == cmd2
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assert len(points1) == len(points2)
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for pt1, pt2 in zip(points1, points2):
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assert pt1 == pytest.approx(pt2, rel=1e-5)
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class ArcRecordingPen(RecordingPen):
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def arcTo(self, rx, ry, rotation, arc_large, arc_sweep, end_point):
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self.value.append(
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("arcTo", (rx, ry, rotation, arc_large, arc_sweep, end_point))
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)
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def test_arc_pen_with_arcTo():
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pen = ArcRecordingPen()
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parse_path("M300,200 h-150 a150,150 0 1,0 150,-150 z", pen)
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expected = [
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('moveTo', ((300.0, 200.0),)),
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('lineTo', ((150.0, 200.0),)),
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('arcTo', (150.0, 150.0, 0.0, True, False, (300.0, 50.0))),
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('lineTo', ((300.0, 200.0),)),
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('closePath', ())
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]
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assert pen.value == expected
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