ring(pos=(1,1,1), axis=(0,1,0), radius=0.5, thickness=0.1)
The ring object has the following attributes and default
values, like those for cylinders: pos
(0,0,0), x
(0), y(0),
z(0), axis
(1,0,0), length
(1), color (1,1,1)
which is color.white, red
(1), green (1),
blue (1), and
up (0,1,0).
As with cylinders, up has a subtle effect
on the 3D appearance of a ring. The axis
attribute only affects the orientation of the ring; the magnitude of the
axis attribute is irrelevant. Additional
ring attributes:
radius Outer radius
of the ring, default = 1
thickness Thickness of ring
(1/10th of radius if not specified)
Note that the pos attribute
for cylinder, arrow, cone, and pyramid corresponds to one end of the object,
whereas for a ring, sphere, and box it corresponds to the center of the
object.
The ring object
is circular, with a specified outer radius and thickness, and with its center
given by the