| 402 |
|
.LP |
| 403 |
|
.UL Mirror |
| 404 |
|
.PP |
| 405 |
< |
Mirror is used for planar surfaces that produce secondary |
| 405 |
> |
Mirror is used for planar surfaces that produce virtual |
| 406 |
|
source reflections. |
| 407 |
|
This material should be used sparingly, as it may cause the light |
| 408 |
|
source calculation to blow up if it is applied to many small surfaces. |
| 426 |
|
.UL Prism1 |
| 427 |
|
.PP |
| 428 |
|
The prism1 material is for general light redirection from prismatic |
| 429 |
< |
glazings, generating secondary light sources. |
| 429 |
> |
glazings, generating virtual light sources. |
| 430 |
|
It can only be used to modify a planar surface (i.e., a polygon or disk) |
| 431 |
|
and should not result in either light concentration or scattering. |
| 432 |
|
The new direction of the ray can be on either side of the material, |
| 433 |
|
and the definitions must have the correct bidirectional properties |
| 434 |
< |
to work properly with secondary light sources. |
| 434 |
> |
to work properly with virtual light sources. |
| 435 |
|
The arguments give the coefficient for the redirected light |
| 436 |
|
and its direction. |
| 437 |
|
.DS |
