| 41 |
|
#define RINDEX 1.52 /* refractive index of glass */ |
| 42 |
|
|
| 43 |
|
|
| 44 |
< |
extern int |
| 44 |
> |
int |
| 45 |
|
m_glass( /* color a ray which hit a thin glass surface */ |
| 46 |
|
OBJREC *m, |
| 47 |
< |
register RAY *r |
| 47 |
> |
RAY *r |
| 48 |
|
) |
| 49 |
|
{ |
| 50 |
|
COLOR mcolor; |
| 57 |
|
double transtest, transdist; |
| 58 |
|
double mirtest, mirdist; |
| 59 |
|
RAY p; |
| 60 |
< |
register int i; |
| 60 |
> |
int i; |
| 61 |
|
/* check arguments */ |
| 62 |
|
if (m->oargs.nfargs == 3) |
| 63 |
|
rindex = RINDEX; /* default value of n */ |
| 116 |
|
multcolor(trans, r->pcol); /* modify by pattern */ |
| 117 |
|
/* transmitted ray */ |
| 118 |
|
if (rayorigin(&p, TRANS, r, trans) == 0) { |
| 119 |
< |
if (!(r->crtype & SHADOW) && hastexture) { |
| 119 |
> |
if (!(r->crtype & (SHADOW|AMBIENT)) && hastexture) { |
| 120 |
|
VSUM(p.rdir, r->rdir, r->pert, 2.*(1.-rindex)); |
| 121 |
|
if (normalize(p.rdir) == 0.0) { |
| 122 |
|
objerror(m, WARNING, "bad perturbation"); |
| 151 |
|
rayvalue(&p); |
| 152 |
|
multcolor(p.rcol, p.rcoef); |
| 153 |
|
addcolor(r->rcol, p.rcol); |
| 154 |
< |
if (!hastexture && r->ro != NULL && isflat(r->ro->otype)) { |
| 154 |
> |
if (r->ro != NULL && isflat(r->ro->otype) && |
| 155 |
> |
!hastexture | (r->crtype & AMBIENT)) { |
| 156 |
|
mirtest = 2.0*bright(p.rcol); |
| 157 |
|
mirdist = r->rot + p.rt; |
| 158 |
|
} |
