NAME

       genworm - 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.

SEE ALSO

       genrbox(1), genrev(1), gensurf(1), icalc(1), rpict(1), rvu(1), xform(1)