| 54 |
|
To turn off backward components, use the |
| 55 |
|
.I \-backward |
| 56 |
|
option. |
| 57 |
< |
Computing both components takes about twice as long as one component. |
| 57 |
> |
Computing both components takes about twice as long as one component, but |
| 58 |
> |
is recommended when rays will be impinging from either side. |
| 59 |
|
.PP |
| 60 |
|
The geometry must fit a rectangular profile, whose width is along the X-axis, |
| 61 |
|
height is in the Y-axis, and depth is in the Z-axis. |
| 82 |
|
This value defaults to 2000 samples distributed over the incoming plane |
| 83 |
|
for each of the 145 Klems hemisphere directions. |
| 84 |
|
.PP |
| 85 |
< |
In some cases, the processing time may be reduced by the |
| 85 |
> |
On multi-core machines, processing time may be reduced by the |
| 86 |
|
.I \-n |
| 87 |
|
option, which specifies the number of simultaneous |
| 87 |
– |
.I rtrace(1) |
| 88 |
|
processes to run in |
| 89 |
|
.I rcontrib(1). |
| 90 |
|
The |
