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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 interpolation. |
