92 |
|
srcsamps( /* sample sources from this surface position */ |
93 |
|
struct illum_args *il, |
94 |
|
FVECT org, |
95 |
< |
FVECT nrm, |
95 |
> |
double eps, |
96 |
|
MAT4 ixfm |
97 |
|
) |
98 |
|
{ |
111 |
|
initsrcindex(&si); /* loop over (sub)sources */ |
112 |
|
for ( ; ; ) { |
113 |
|
VCOPY(sr.rorg, org); /* pick side to shoot from */ |
114 |
– |
d = 5.*FTINY; |
115 |
– |
VSUM(sr.rorg, sr.rorg, nrm, d); |
114 |
|
samplendx++; /* increment sample counter */ |
115 |
|
if (!srcray(&sr, NULL, &si)) |
116 |
|
break; /* end of sources */ |
120 |
|
else |
121 |
|
VCOPY(v, sr.rdir); |
122 |
|
if (v[2] >= -FTINY) |
123 |
< |
continue; /* only sample transmission */ |
123 |
> |
continue; /* only sample transmission */ |
124 |
|
v[0] = -v[0]; v[1] = -v[1]; v[2] = -v[2]; |
125 |
|
sr.rno = flatindex(v, nalt, nazi); |
126 |
|
d = nalt*nazi*(1./PI) * v[2]; |
127 |
|
d *= si.dom; /* solid angle correction */ |
128 |
|
scalecolor(sr.rcoef, d); |
129 |
+ |
VSUM(sr.rorg, sr.rorg, sr.rdir, -eps); |
130 |
|
process_ray(&sr, ray_pqueue(&sr)); |
131 |
|
} |
132 |
|
} |
237 |
|
FVECT dn, org, dir; |
238 |
|
FVECT u, v; |
239 |
|
double ur[2], vr[2]; |
240 |
+ |
double epsilon; |
241 |
|
MAT4 xfm; |
242 |
|
char xfrot[64]; |
243 |
|
int nallow; |
287 |
|
dim[0] = random(); |
288 |
|
/* sample polygon */ |
289 |
|
nallow = 5*n*il->nsamps; |
290 |
+ |
epsilon = .005*sqrt(fa->area); |
291 |
|
for (dim[1] = 0; dim[1] < n; dim[1]++) |
292 |
|
for (i = 0; i < il->nsamps; i++) { |
293 |
|
/* randomize direction */ |
315 |
|
freeface(ob); |
316 |
|
return(my_default(ob, il, nm)); |
317 |
|
} |
318 |
< |
r1 = 5.*FTINY; |
318 |
< |
for (j = 0; j < 3; j++) |
319 |
< |
org[j] += r1*fa->norm[j]; |
318 |
> |
VSUM(org, org, dir, -epsilon); |
319 |
|
/* send sample */ |
320 |
|
raysamp(dim[1], org, dir); |
321 |
|
} |
350 |
|
return(my_default(ob, il, nm)); |
351 |
|
} |
352 |
|
/* sample source rays */ |
353 |
< |
srcsamps(il, org, fa->norm, ixfm); |
353 |
> |
srcsamps(il, org, epsilon, ixfm); |
354 |
|
} |
355 |
|
} |
356 |
|
/* wait for all rays to finish */ |
517 |
|
for (j = 0; j < 3; j++) |
518 |
|
org[j] = CO_P0(co)[j] + r1*u[j] + r2*v[j]; |
519 |
|
/* sample source rays */ |
520 |
< |
srcsamps(il, org, co->ad, ixfm); |
520 |
> |
srcsamps(il, org, 5.*FTINY, ixfm); |
521 |
|
} |
522 |
|
} |
523 |
|
/* wait for all rays to finish */ |