| 1 |
greg |
1.2 |
.\" RCSid "$Id$"
|
| 2 |
greg |
1.1 |
.TH GENWORM 1 11/15/93 RADIANCE
|
| 3 |
|
|
.SH NAME
|
| 4 |
|
|
genworm - generate a RADIANCE description of a functional worm
|
| 5 |
|
|
.SH SYNOPSIS
|
| 6 |
|
|
.B "genworm mat name 'x(t)' 'y(t)' 'z(t)' 'r(t)' nseg"
|
| 7 |
|
|
[
|
| 8 |
|
|
.B "\-e expr"
|
| 9 |
|
|
][
|
| 10 |
|
|
.B "\-f file"
|
| 11 |
|
|
]
|
| 12 |
|
|
.SH DESCRIPTION
|
| 13 |
|
|
.I Genworm
|
| 14 |
|
|
produces a RADIANCE scene description of a
|
| 15 |
|
|
worm defined by the parametric equations
|
| 16 |
|
|
.I x(t),
|
| 17 |
|
|
.I y(t),
|
| 18 |
|
|
.I z(t),
|
| 19 |
|
|
and
|
| 20 |
|
|
.I r(t)
|
| 21 |
|
|
(the radius).
|
| 22 |
|
|
.I T
|
| 23 |
|
|
will vary from 0 to 1 in steps of
|
| 24 |
|
|
.I 1/nseg.
|
| 25 |
|
|
The surface will be composed of
|
| 26 |
|
|
.I nseg
|
| 27 |
|
|
cones or cylinders and
|
| 28 |
|
|
.I nseg+1
|
| 29 |
|
|
spheres.
|
| 30 |
|
|
The expressions are of the same type used in RADIANCE
|
| 31 |
|
|
function files.
|
| 32 |
|
|
Auxiliary expressions and/or files may be specified
|
| 33 |
|
|
in any number of
|
| 34 |
|
|
.I \-e
|
| 35 |
|
|
and
|
| 36 |
|
|
.I \-f
|
| 37 |
|
|
options.
|
| 38 |
|
|
.SH EXAMPLE
|
| 39 |
|
|
To generate a banana:
|
| 40 |
|
|
.IP "" .2i
|
| 41 |
|
|
genworm yellow banana '0' '5*sin(t)' '5*cos(t)' '.4-(.5-t)*(.5-t)' 20
|
| 42 |
|
|
.SH AUTHOR
|
| 43 |
|
|
Greg Ward
|
| 44 |
|
|
.SH BUGS
|
| 45 |
|
|
Since the worm is constructed of intersecting surfaces, only
|
| 46 |
|
|
opaque materials should be used with this object.
|
| 47 |
|
|
Also, a worm cannot double back inside itself without making a mess.
|
| 48 |
|
|
.SH "SEE ALSO"
|
| 49 |
|
|
calc(1), genbox(1), genrev(1), gensurf(1), rpict(1), rview(1), xform(1)
|
