genbox - generate a RADIANCE or Wavefront description of a box
genbox mat name xsiz ysiz zsiz [ -i ][ -b bev | -r rad [ -n nseg ][ -s ] ][ -o ]
Genbox 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 planes. The surfaces that make up the box will be modified by mat and their identifiers will begin with name.
The -i option can be used to produce a box with inward directed surface normals.
The -b option can be used to specify the indentation for beveled edges.
The -r option can be used to specify the radius for rounded edges, which are normally modeled as cylinders and spheres for non-inverted RADIANCE output. However, this type of model only makes sense for external views of an opaque object. If a rounded box is inverted using -i, then the corners and edges are modeled with polygons, instead. This option can also be forced by specifying a minum number of segments with the -n option. The -s option controls whether surface normal smoothing is applied as well.
The -o option specifies Wavefront .OBJ output, and also forces polygons to be used with the -r option. If the -s option is present, vertex normals are also produced for smooth rendering.
To produce a rectangular box made of wood with rounded edges:
|
genbox wood box1 5 8 3 -r .5 > box1.rad |
To produce a box made of crystal with beveled edges:
|
genbox crystal box2 3 7 1 -b .1 > box2.rad |
To produce a transparent box with smoothed, rounded edges:
|
genbox glassy box3 2 4 3 -r .25 -n 16 -s > box3.rad |
Greg Ward
genrev(1), gensurf(1), genworm(1), obj2mesh(1), obj2rad(1), robjutil(1), rpict(1), rvu(1), xform(1)