def test_vmobject_point_from_propotion():
obj = VMobject()
# One long line, one short line
obj.set_points_as_corners([
np.array([0, 0, 0]),
np.array([4, 0, 0]),
np.array([4, 2, 0]),
])
# Total length of 6, so halfway along the object
# would be at length 3, which lands in the first, long line.
assert np.all(obj.point_from_proportion(0.5) == np.array([3, 0, 0]))
with pytest.raises(ValueError, match="between 0 and 1"):
obj.point_from_proportion(2)
obj.clear_points()
with pytest.raises(Exception, match="with no points"):
obj.point_from_proportion(0)
def test_vmobject_point_from_propotion():
obj = VMobject()
# One long line, one short line
obj.set_points_as_corners(
[
np.array([0, 0, 0]),
np.array([4, 0, 0]),
np.array([4, 2, 0]),
]
)
# Total length of 6, so halfway along the object
# would be at length 3, which lands in the first, long line.
assert np.all(obj.point_from_proportion(0.5) == np.array([3, 0, 0]))