235 |
|
d = 1.0/(n*n); |
236 |
|
scalecolor(hp->acoef, d); |
237 |
|
/* make tangent plane axes */ |
238 |
< |
if (!getperpendicular(hp->ux, r->ron)) |
238 |
> |
if (!getperpendicular(hp->ux, r->ron, 1)) |
239 |
|
error(CONSISTENCY, "bad ray direction in samp_hemi"); |
240 |
|
VCROSS(hp->uy, r->ron, hp->ux); |
241 |
|
/* sample divisions */ |
609 |
|
double ang, a1; |
610 |
|
int i, j; |
611 |
|
/* don't bother for a few samples */ |
612 |
< |
if (hp->ns < 12) |
612 |
> |
if (hp->ns < 8) |
613 |
|
return(0); |
614 |
|
/* check distances overhead */ |
615 |
|
for (i = hp->ns*3/4; i-- > hp->ns>>2; ) |
733 |
|
ra[0] = maxarad; |
734 |
|
} |
735 |
|
/* flag encroached directions */ |
736 |
< |
if ((wt >= 0.89*AVGREFL) & (crlp != NULL)) |
736 |
> |
if (crlp != NULL) |
737 |
|
*crlp = ambcorral(hp, uv, ra[0]*ambacc, ra[1]*ambacc); |
738 |
|
if (pg != NULL) { /* cap gradient if necessary */ |
739 |
|
d = pg[0]*pg[0]*ra[0]*ra[0] + pg[1]*pg[1]*ra[1]*ra[1]; |