genworm(1)
generate a RADIANCE description of a functional worm
SYNOPSIS
genworm mat name 'x(t)' 'y(t)' 'z(t)' 'r(t)' nseg
[
-e expr
][
-f file
]
DESCRIPTION
Genworm
produces a RADIANCE scene description of a
worm defined by the parametric equations
x(t),
y(t),
z(t),
and
r(t)
(the radius).
T
will vary from 0 to 1 in steps of
1/nseg.
The surface will be composed of
nseg
cones or cylinders and
nseg+1
spheres.
The expressions are of the same type used in RADIANCE
function files.
Auxiliary expressions and/or files may be specified
in any number of
-e
and
-f
options.
EXAMPLE
To generate a banana:
-
genworm yellow banana '0' '5*sin(t)' '5*cos(t)' '.4-(.5-t)*(.5-t)' 20
AUTHOR
Greg Ward
BUGS
Since the worm is constructed of intersecting surfaces, only
opaque materials should be used with this object.
Also, a worm cannot double back inside itself without making a mess.
