| 1 |
.\" RCSid "$Id: genbox.1,v 1.6 2021/04/15 23:51:04 greg Exp $" |
| 2 |
.TH GENBOX 1 11/15/93 RADIANCE |
| 3 |
.SH NAME |
| 4 |
genbox - generate a RADIANCE or Wavefront description of a box |
| 5 |
.SH SYNOPSIS |
| 6 |
.B "genbox mat name xsiz ysiz zsiz" |
| 7 |
[ |
| 8 |
.B \-i |
| 9 |
][ |
| 10 |
.B "\-b bev" |
| 11 |
| |
| 12 |
.B "\-r rad" |
| 13 |
[ |
| 14 |
.B "\-n nseg |
| 15 |
][ |
| 16 |
.B \-s |
| 17 |
] |
| 18 |
][ |
| 19 |
.B \-o |
| 20 |
] |
| 21 |
.SH DESCRIPTION |
| 22 |
.I Genbox |
| 23 |
produces a RADIANCE scene description of a parallelepiped |
| 24 |
with one corner at the origin and the opposite corner at |
| 25 |
.I "(xsiz, ysiz, zsiz)." |
| 26 |
The sides of the box will be parallel to the three coordinate |
| 27 |
planes. |
| 28 |
The surfaces that make up the box will be modified by |
| 29 |
.I mat |
| 30 |
and their identifiers will begin with |
| 31 |
.I name. |
| 32 |
.PP |
| 33 |
The |
| 34 |
.I \-i |
| 35 |
option can be used to produce a box with inward directed surface |
| 36 |
normals. |
| 37 |
.PP |
| 38 |
The |
| 39 |
.I \-b |
| 40 |
option can be used to specify the indentation for beveled edges. |
| 41 |
.PP |
| 42 |
The |
| 43 |
.I \-r |
| 44 |
option can be used to specify the radius for rounded edges, which |
| 45 |
are normally |
| 46 |
modeled as cylinders and spheres for non-inverted RADIANCE output. |
| 47 |
However, this type of model only makes sense for external views of |
| 48 |
an opaque object. |
| 49 |
If a rounded box is inverted using |
| 50 |
.I \-i, |
| 51 |
then the corners and edges are modeled with polygons, instead. |
| 52 |
This option can also be forced by specifying a minimum number of |
| 53 |
segments with the |
| 54 |
.I \-n |
| 55 |
option. |
| 56 |
The |
| 57 |
.I \-s |
| 58 |
option controls whether surface normal smoothing is applied as well. |
| 59 |
.PP |
| 60 |
The |
| 61 |
.I \-o |
| 62 |
option specifies Wavefront .OBJ output, and |
| 63 |
also forces polygons to be used with the |
| 64 |
.I \-r |
| 65 |
option. |
| 66 |
If the |
| 67 |
.I \-s |
| 68 |
option is present, vertex normals are also produced for smooth rendering. |
| 69 |
.SH EXAMPLE |
| 70 |
To produce a rectangular box made of wood with rounded edges: |
| 71 |
.IP "" .2i |
| 72 |
genbox wood box1 5 8 3 \-r .5 > box1.rad |
| 73 |
.PP |
| 74 |
To produce a box made of crystal with beveled edges: |
| 75 |
.IP "" .2i |
| 76 |
genbox crystal box2 3 7 1 \-b .1 > box2.rad |
| 77 |
.PP |
| 78 |
To produce a transparent box with smoothed, rounded edges: |
| 79 |
.IP "" .2i |
| 80 |
genbox glassy box3 2 4 3 -r .25 -n 16 -s > box3.rad |
| 81 |
.SH AUTHOR |
| 82 |
Greg Ward |
| 83 |
.SH "SEE ALSO" |
| 84 |
genrev(1), gensurf(1), genworm(1), obj2mesh(1), obj2rad(1), |
| 85 |
robjutil(1), rpict(1), rvu(1), xform(1) |
