def test_packed_points_advanced():
packed_points, _ = LWPolylinePoints.from_tags(lwtags(LWPOLYLINE1))
packed_points.append((5, 5, 1, 2, 3))
assert len(packed_points) == 3
assert packed_points[-1] == (5, 5, 1, 2, 3)
packed_points[0] = (7, 7, 0, 0, 0)
assert packed_points[0] == (7, 7, 0, 0, 0)
assert len(packed_points) == 3
packed_points.clear()
assert len(packed_points) == 0
def test_packed_points_to_dxf_tags_with_bulge():
packed_points, _ = LWPolylinePoints.from_tags(lwtags(LWPOLYLINE1))
packed_points[0] = (-.5, -.5, 0, 0, 1)
packed_points[1] = (.5, .5, .1, .2, -1)
tags = list(packed_points.dxftags())
assert len(tags) == 6
assert tags[0] == (10, (-.5, -.5))
assert tags[1] == (42, 1)
assert tags[2] == (10, (.5, .5))
assert tags[3] == (40, .1)
assert tags[4] == (41, .2)
assert tags[5] == (42, -1)
def test_packed_points_basics():
packed_points, _ = LWPolylinePoints.from_tags(lwtags(LWPOLYLINE1))
assert len(packed_points) == 2
points = list(packed_points)
assert len(points) == 2
assert packed_points[0] == (-.5, -.5, 0, 0, 0)
assert packed_points[1] == (.5, .5, 0, 0, 0)
# test negative index
assert packed_points[-1] == (.5, .5, 0, 0, 0)
with pytest.raises(IndexError):
packed_points[-3]
with pytest.raises(IndexError):
packed_points[2]
def test_packed_points_to_dxf_tags():
packed_points, _ = LWPolylinePoints.from_tags(lwtags(LWPOLYLINE1))
tags = list(packed_points.dxftags())
assert len(tags) == 2 # just the points
assert tags[0] == (10, (-.5, -.5))
assert tags[1] == (10, (.5, .5))