Return to index
NAME
ring - create a circular ring with inner and outer radii
SYNOPSIS
ring
vc rmin rmax
DESCRIPTION
Create a circular face of the current material centered on the named
vertex
vc
with an inner radius of
rmin
and an outer radius of
rmax.
The surface orientation is determined by the normal vector
associated with
vc.
If this vertex is undefined or has no normal, an error will result.
The minimum radius may be equal to but not less than zero, and the
maximum radius must be strictly greater than the minimum.
EXAMPLE
# The proverbial brass ring
o brass_ring
m brass
v end1 =
p 0 -.005 0
n 0 -1 0
v end2 =
p 0 .005 0
n 0 1 0
ring end1 .02 .03
cyl end1 .03 end2
ring end2 .02 .03
cyl end2 -.02 end1
o
SEE ALSO
cyl,
cone,
f,
m,
prism,
sph,
torus,
v