---
name: "genworm"
section: "1"
platform: "linux"
package: "radiance"
version: "4R1+20120125-1+b1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/genworm"
---

# genworm(1)

generate a RADIANCE description of a functional worm

## 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)](/genrbox/1.md), [genrev(1)](/genrev/1.md), [gensurf(1)](/gensurf/1.md), [icalc(1)](/icalc/1.md), [rpict(1)](/rpict/1.md), [rvu(1)](/rvu/1.md), [xform(1)](/xform/1.md)