| 1 |
– |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
– |
|
| 1 |
|
#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 6 |
– |
|
| 4 |
|
/* |
| 5 |
|
* glass.c - simpler shading function for thin glass surfaces. |
| 9 |
– |
* |
| 10 |
– |
* 11/14/86 |
| 6 |
|
*/ |
| 7 |
|
|
| 8 |
+ |
#include "copyright.h" |
| 9 |
+ |
|
| 10 |
|
#include "ray.h" |
| 11 |
|
|
| 12 |
|
#include "otypes.h" |
| 23 |
|
* modifier glass id |
| 24 |
|
* 0 |
| 25 |
|
* 0 |
| 26 |
< |
* 3 red grn blu |
| 26 |
> |
* 3+ red grn blu [refractive_index] |
| 27 |
|
* |
| 28 |
|
* The color is used for the transmission at normal incidence. |
| 29 |
|
* To compute transmissivity (tn) from transmittance (Tn) use: |
| 66 |
|
|
| 67 |
|
setcolor(mcolor, m->oargs.farg[0], m->oargs.farg[1], m->oargs.farg[2]); |
| 68 |
|
|
| 69 |
+ |
/* get modifiers */ |
| 70 |
+ |
raytexture(r, m->omod); |
| 71 |
|
if (r->rod < 0.0) /* reorient if necessary */ |
| 72 |
|
flipsurface(r); |
| 73 |
|
mirtest = transtest = 0; |
| 74 |
|
mirdist = transdist = r->rot; |
| 75 |
< |
/* get modifiers */ |
| 77 |
< |
raytexture(r, m->omod); |
| 75 |
> |
/* perturb normal */ |
| 76 |
|
if (hastexture = DOT(r->pert,r->pert) > FTINY*FTINY) |
| 77 |
|
pdot = raynormal(pnorm, r); |
| 78 |
|
else { |
