generate a RADIANCE description of a box
genrbox mat name xsiz ysiz zsiz
produces a RADIANCE scene description of a parallelepiped
with one corner at the origin and the opposite corner at
(xsiz, ysiz, zsiz).
The sides of the box will be parallel to the three coordinate
The surfaces that make up the box will be modified by
and their identifiers will begin with
option can be used to produce a box with inward directed surface
option can be used to specify the radius for rounded edges.
option can be used to specify the indentation for beveled edges.
To produce a rectangular box made of wood with beveled edges:
genrbox wood box1 5 8 3 -b .5 > box1
Because spheres and cylinders are used to construct boxes with
rounded edges, a transparent box of this type appears quite messy.