| 32 |
|
If the |
| 33 |
|
.I \-n |
| 34 |
|
option is specified with a value greater than 1, multiple |
| 35 |
< |
.I rtrace(1) |
| 36 |
< |
processes will be used to accelerate computation on a shared |
| 35 |
> |
ray tracing processes will be used to accelerate computation on a shared |
| 36 |
|
memory machine. |
| 37 |
|
Note that there is no benefit to using more processes |
| 38 |
|
than there are local CPUs available to do the work. |
| 39 |
|
.PP |
| 40 |
|
Remaining arguments to |
| 41 |
|
.I mkillum |
| 42 |
< |
are passed directly to |
| 42 |
> |
are interpreted as rendering options for |
| 43 |
|
.I rtrace(1), |
| 44 |
< |
which is used to compute the light distributions for the input surfaces. |
| 44 |
> |
to compute the light distributions for the input surfaces. |
| 45 |
|
These surfaces can be any combination of polygons, spheres and rings. |
| 46 |
|
Other surfaces may be included, but |
| 47 |
|
.I mkillum |
| 56 |
|
(Note that this character must be escaped from most shells.) |
| 57 |
|
This is necessary so |
| 58 |
|
.I mkillum |
| 59 |
< |
can tell where the arguments to |
| 61 |
< |
.I rtrace(1) |
| 59 |
> |
can tell where the rendering arguments |
| 60 |
|
end and its own input files begin. |
| 61 |
|
.SH VARIABLES |
| 62 |
|
.I Mkillum |
| 137 |
|
.TP |
| 138 |
|
.BR n |
| 139 |
|
Do not produce any secondary sources. |
| 140 |
< |
All input will be passed to the output unaffected. |
| 140 |
> |
All input will be passed to the output unaffected, except any |
| 141 |
> |
void surfaces will be removed. |
| 142 |
|
.TP |
| 143 |
|
.BI b =real |
| 144 |
|
Do not produce a secondary source for a surface if its average |
| 192 |
|
as its alternate material. |
| 193 |
|
The default is |
| 194 |
|
.I l-. |
| 195 |
+ |
.TP |
| 196 |
+ |
.BI t =real |
| 197 |
+ |
Set the surface thickness to |
| 198 |
+ |
.I real |
| 199 |
+ |
in world coordinates. |
| 200 |
+ |
This value is used for determining where to start rays that need to begin |
| 201 |
+ |
on the opposite side of a fenestration system, specifically |
| 202 |
+ |
to compute the incoming distribution for a BSDF computation. |
| 203 |
+ |
If the thickness is set to 0 and a BSDF contains detailed geometry, |
| 204 |
+ |
it will be translated and output as part of the new description, provided the |
| 205 |
+ |
.I l- |
| 206 |
+ |
option is also in effect. |
| 207 |
+ |
(This currently works only for rectangular polygons.)\0 |
| 208 |
+ |
The default thickness is 0. |
| 209 |
|
.SH EXAMPLES |
| 210 |
|
The following command generates illum's corresponding to geometry |
| 211 |
|
in the files "it1.rad" and "it2.rad": |
| 212 |
|
.IP "" .3i |
| 213 |
< |
mkillum -ab 2 -ad 1024 -av .1 .1 .1 basic.oct "<" it1.rad it2.rad > illums.rad |
| 213 |
> |
mkillum \-ab 2 \-ad 1024 \-av .1 .1 .1 basic.oct "<" it1.rad it2.rad > illums.rad |
| 214 |
|
.PP |
| 215 |
|
The output file "illums.rad" would then be combined with the original |
| 216 |
|
scene geometry to create a more easily rendered composite. |
| 217 |
+ |
.SH ENVIRONMENT |
| 218 |
+ |
RAYPATH the directories to check for auxiliary files. |
| 219 |
|
.SH AUTHOR |
| 220 |
|
Greg Ward |
| 221 |
|
.SH ACKNOWLEDGEMENT |
| 222 |
|
Work on this program was initiated and sponsored by the LESO |
| 223 |
|
group at EPFL in Switzerland. |
| 224 |
|
.SH "SEE ALSO" |
| 225 |
< |
oconv(1), rad(1), rpict(1), rtrace(1), rvu(1) |
| 225 |
> |
genBSDF(1), oconv(1), rad(1), rpict(1), rtrace(1), rvu(1) |
