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- GENREV(1) USER COMMANDS GENREV(1)
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- NAME
- genrev - generate a RADIANCE description of surface of revo-
- lution
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- SYNOPSIS
- genrev mat name 'z(t)' 'r(t)' nseg [ -e expr ][ -f file ][
- -s ]
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- DESCRIPTION
- Genrev produces a RADIANCE scene description of a surface of
- revolution. The object will be composed of nseg cones,
- cups, cylinders, tubes or rings following the parametric
- curve defined by z(t) (height) and r(t) (radius). When z is
- increasing with t, the surface normal points outward. When
- z is decreasing, the normal points inward. The variable t
- used in the function expressions varies from 0 to 1 in even
- steps of 1/nseg. 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.
- The -s option smooths the surfaces using Phong normal inter-
- polation.
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- EXAMPLE
- To generate a torus with an inner radius of 1 and an outer
- radius of 3:
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- genrev steel torus 'sin(2*PI*t)' '1+cos(2*PI*t)' 32
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- AUTHOR
- Greg Ward
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- BUGS
- The -s option doesn't modify the surface normal correctly
- for the opposite side.
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- SEE ALSO
- calc(1), genbox(1), gensurf(1), genworm(1), rpict(1),
- rview(1), xform(1)
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- Sun Release 4.1 Last change: 1
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