| 12 |
|
.B "\-r rad" |
| 13 |
|
[ |
| 14 |
|
.B "\-n nseg |
| 15 |
+ |
][ |
| 16 |
+ |
.B \-s |
| 17 |
|
] |
| 18 |
|
][ |
| 19 |
|
.B \-o |
| 42 |
|
The |
| 43 |
|
.I \-r |
| 44 |
|
option can be used to specify the radius for rounded edges, which |
| 45 |
< |
are modeled as cylinders and spheres for non-inverted RADIANCE output. |
| 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 minum number of |
| 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 |
| 63 |
|
also forces polygons to be used with the |
| 64 |
|
.I \-r |
| 65 |
|
option. |
| 66 |
< |
In this case, vertex normals are also produced for smooth rendering. |
| 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 |
| 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 |
| 71 |
– |
.SH BUGS |
| 72 |
– |
Because spheres and cylinders are used to construct boxes with |
| 73 |
– |
rounded edges, a transparent box of this type appears quite messy. |
| 74 |
– |
The preferred alternative in this case is the |
| 75 |
– |
.I \-n |
| 76 |
– |
option, which produces polygons, instead. |
| 77 |
– |
However, normal smoothing is only applied to the Wavefront .OBJ output, |
| 78 |
– |
so this must be passed through |
| 79 |
– |
.I obj2rad |
| 80 |
– |
to get perfectly smooth results. |
| 83 |
|
.SH "SEE ALSO" |
| 84 |
|
genrev(1), gensurf(1), genworm(1), obj2mesh(1), obj2rad(1), |
| 85 |
|
robjutil(1), rpict(1), rvu(1), xform(1) |
