| # | Line 320 | Line 320 | rayirrad( /* compute irradiance rather than radiance | |
|---|---|---|
| 320 | RAY *r | |
| 321 | ) | |
| 322 | { | |
| 323 | + | void (*old_revf)(RAY *) = r->revf; |
| 324 | + | |
| 325 | r->rot = 1e-5; /* pretend we hit surface */ | |
| 326 | VSUM(r->rop, r->rorg, r->rdir, r->rot); | |
| 327 | r->ron[0] = -r->rdir[0]; | |
| 328 | r->ron[1] = -r->rdir[1]; | |
| 329 | r->ron[2] = -r->rdir[2]; | |
| 330 | r->rod = 1.0; | |
| 329 | – | r->revf = raytrace; |
| 331 | /* compute result */ | |
| 332 | + | r->revf = raytrace; |
| 333 | (*ofun[Lamb.otype].funp)(&Lamb, r); | |
| 334 | + | r->revf = old_revf; |
| 335 | } | |
| 336 | ||
| 337 | ||
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