1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: mkillum2.c,v 2.24 2007/12/05 20:07:34 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* Routines to do the actual calculation for mkillum |
6 |
*/ |
7 |
|
8 |
#include <string.h> |
9 |
|
10 |
#include "mkillum.h" |
11 |
#include "face.h" |
12 |
#include "cone.h" |
13 |
#include "source.h" |
14 |
|
15 |
|
16 |
COLORV * distarr = NULL; /* distribution array */ |
17 |
int distsiz = 0; |
18 |
|
19 |
|
20 |
void |
21 |
newdist( /* allocate & clear distribution array */ |
22 |
int siz |
23 |
) |
24 |
{ |
25 |
if (siz <= 0) { |
26 |
if (distsiz > 0) |
27 |
free((void *)distarr); |
28 |
distarr = NULL; |
29 |
distsiz = 0; |
30 |
return; |
31 |
} |
32 |
if (distsiz < siz) { |
33 |
if (distsiz > 0) |
34 |
free((void *)distarr); |
35 |
distarr = (COLORV *)malloc(sizeof(COLOR)*siz); |
36 |
if (distarr == NULL) |
37 |
error(SYSTEM, "out of memory in newdist"); |
38 |
distsiz = siz; |
39 |
} |
40 |
memset(distarr, '\0', sizeof(COLOR)*siz); |
41 |
} |
42 |
|
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|
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int |
45 |
process_ray( /* process a ray result or report error */ |
46 |
RAY *r, |
47 |
int rv |
48 |
) |
49 |
{ |
50 |
COLORV *colp; |
51 |
|
52 |
if (rv == 0) /* no result ready */ |
53 |
return(0); |
54 |
if (rv < 0) |
55 |
error(USER, "ray tracing process died"); |
56 |
if (r->rno >= distsiz) |
57 |
error(INTERNAL, "bad returned index in process_ray"); |
58 |
multcolor(r->rcol, r->rcoef); /* in case it's a source ray */ |
59 |
colp = &distarr[r->rno * 3]; |
60 |
addcolor(colp, r->rcol); |
61 |
return(1); |
62 |
} |
63 |
|
64 |
|
65 |
void |
66 |
raysamp( /* queue a ray sample */ |
67 |
int ndx, |
68 |
FVECT org, |
69 |
FVECT dir |
70 |
) |
71 |
{ |
72 |
RAY myRay; |
73 |
int rv; |
74 |
|
75 |
if ((ndx < 0) | (ndx >= distsiz)) |
76 |
error(INTERNAL, "bad index in raysamp"); |
77 |
VCOPY(myRay.rorg, org); |
78 |
VCOPY(myRay.rdir, dir); |
79 |
myRay.rmax = .0; |
80 |
rayorigin(&myRay, PRIMARY, NULL, NULL); |
81 |
myRay.rno = ndx; |
82 |
/* queue ray, check result */ |
83 |
process_ray(&myRay, ray_pqueue(&myRay)); |
84 |
} |
85 |
|
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|
87 |
void |
88 |
srcsamps( /* sample sources from this surface position */ |
89 |
struct illum_args *il, |
90 |
FVECT org, |
91 |
FVECT nrm, |
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MAT4 ixfm |
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) |
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{ |
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int nalt, nazi; |
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SRCINDEX si; |
97 |
RAY sr; |
98 |
FVECT v; |
99 |
double d; |
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int i, j; |
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/* get sampling density */ |
102 |
if (il->sampdens <= 0) { |
103 |
nalt = nazi = 1; |
104 |
} else { |
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i = PI * il->sampdens; |
106 |
nalt = sqrt(i/PI) + .5; |
107 |
nazi = PI*nalt + .5; |
108 |
} |
109 |
initsrcindex(&si); /* loop over (sub)sources */ |
110 |
for ( ; ; ) { |
111 |
VCOPY(sr.rorg, org); /* pick side to shoot from */ |
112 |
if (il->sd != NULL) { |
113 |
int sn = si.sn; |
114 |
if (si.sp+1 >= si.np) ++sn; |
115 |
if (sn >= nsources) break; |
116 |
if (source[sn].sflags & SDISTANT) |
117 |
d = DOT(source[sn].sloc, nrm); |
118 |
else { |
119 |
VSUB(v, source[sn].sloc, org); |
120 |
d = DOT(v, nrm); |
121 |
} |
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} else |
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d = 1.0; /* only transmission */ |
124 |
if (d < 0.0) |
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d = -1.0001*il->thick - 5.*FTINY; |
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else |
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d = 5.*FTINY; |
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for (i = 3; i--; ) |
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sr.rorg[i] += d*nrm[i]; |
130 |
if (!srcray(&sr, NULL, &si)) |
131 |
break; /* end of sources */ |
132 |
/* index direction */ |
133 |
if (ixfm != NULL) |
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multv3(v, sr.rdir, ixfm); |
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else |
136 |
VCOPY(v, sr.rdir); |
137 |
if (il->sd != NULL) { |
138 |
i = getBSDF_incndx(il->sd, v); |
139 |
if (i < 0) |
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continue; /* must not be important */ |
141 |
sr.rno = i; |
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d = getBSDF_incrad(il->sd, i); |
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d = 1.0/(PI*d*d); |
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} else { |
145 |
if (v[2] >= -FTINY) |
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continue; /* only sample transmission */ |
147 |
d = 1.0 - v[2]*v[2]; |
148 |
i = d*nalt; |
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d = atan2(-v[1], -v[0])/(2.*PI); |
150 |
if (d < 0.0) d += 1.0; |
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j = d*nazi + 0.5; |
152 |
if (j >= nazi) j = 0; |
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sr.rno = i*nazi + j; |
154 |
d = nalt*nazi/PI; |
155 |
} |
156 |
d *= si.dom; /* solid angle correction */ |
157 |
scalecolor(sr.rcoef, d); |
158 |
process_ray(&sr, ray_pqueue(&sr)); |
159 |
} |
160 |
} |
161 |
|
162 |
|
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void |
164 |
rayclean() /* finish all pending rays */ |
165 |
{ |
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RAY myRay; |
167 |
|
168 |
while (process_ray(&myRay, ray_presult(&myRay, 0))) |
169 |
; |
170 |
} |
171 |
|
172 |
|
173 |
static void |
174 |
mkaxes( /* compute u and v to go with n */ |
175 |
FVECT u, |
176 |
FVECT v, |
177 |
FVECT n |
178 |
) |
179 |
{ |
180 |
register int i; |
181 |
|
182 |
v[0] = v[1] = v[2] = 0.0; |
183 |
for (i = 0; i < 3; i++) |
184 |
if (n[i] < 0.6 && n[i] > -0.6) |
185 |
break; |
186 |
v[i] = 1.0; |
187 |
fcross(u, v, n); |
188 |
normalize(u); |
189 |
fcross(v, n, u); |
190 |
} |
191 |
|
192 |
|
193 |
static void |
194 |
rounddir( /* compute uniform spherical direction */ |
195 |
register FVECT dv, |
196 |
double alt, |
197 |
double azi |
198 |
) |
199 |
{ |
200 |
double d1, d2; |
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|
202 |
dv[2] = 1. - 2.*alt; |
203 |
d1 = sqrt(1. - dv[2]*dv[2]); |
204 |
d2 = 2.*PI * azi; |
205 |
dv[0] = d1*cos(d2); |
206 |
dv[1] = d1*sin(d2); |
207 |
} |
208 |
|
209 |
|
210 |
void |
211 |
flatdir( /* compute uniform hemispherical direction */ |
212 |
FVECT dv, |
213 |
double alt, |
214 |
double azi |
215 |
) |
216 |
{ |
217 |
double d1, d2; |
218 |
|
219 |
d1 = sqrt(alt); |
220 |
d2 = 2.*PI * azi; |
221 |
dv[0] = d1*cos(d2); |
222 |
dv[1] = d1*sin(d2); |
223 |
dv[2] = sqrt(1. - alt); |
224 |
} |
225 |
|
226 |
|
227 |
int |
228 |
my_default( /* default illum action */ |
229 |
OBJREC *ob, |
230 |
struct illum_args *il, |
231 |
char *nm |
232 |
) |
233 |
{ |
234 |
sprintf(errmsg, "(%s): cannot make illum for %s \"%s\"", |
235 |
nm, ofun[ob->otype].funame, ob->oname); |
236 |
error(WARNING, errmsg); |
237 |
printobj(il->altmat, ob); |
238 |
return(1); |
239 |
} |
240 |
|
241 |
|
242 |
int |
243 |
my_face( /* make an illum face */ |
244 |
OBJREC *ob, |
245 |
struct illum_args *il, |
246 |
char *nm |
247 |
) |
248 |
{ |
249 |
int dim[2]; |
250 |
int n, nalt, nazi, alti; |
251 |
double sp[2], r1, r2; |
252 |
int h; |
253 |
FVECT dn, org, dir; |
254 |
FVECT u, v; |
255 |
double ur[2], vr[2]; |
256 |
MAT4 xfm; |
257 |
int nallow; |
258 |
FACE *fa; |
259 |
int i, j; |
260 |
/* get/check arguments */ |
261 |
fa = getface(ob); |
262 |
if (fa->area == 0.0) { |
263 |
freeface(ob); |
264 |
return(my_default(ob, il, nm)); |
265 |
} |
266 |
/* set up sampling */ |
267 |
if (il->sd != NULL) { |
268 |
if (!getBSDF_xfm(xfm, fa->norm, il->udir)) { |
269 |
objerror(ob, WARNING, "illegal up direction"); |
270 |
freeface(ob); |
271 |
return(my_default(ob, il, nm)); |
272 |
} |
273 |
n = il->sd->ninc; |
274 |
} else { |
275 |
if (il->sampdens <= 0) { |
276 |
nalt = nazi = 1; /* diffuse assumption */ |
277 |
} else { |
278 |
n = PI * il->sampdens; |
279 |
nalt = sqrt(n/PI) + .5; |
280 |
nazi = PI*nalt + .5; |
281 |
} |
282 |
n = nazi*nalt; |
283 |
} |
284 |
newdist(n); |
285 |
/* take first edge >= sqrt(area) */ |
286 |
for (j = fa->nv-1, i = 0; i < fa->nv; j = i++) { |
287 |
u[0] = VERTEX(fa,i)[0] - VERTEX(fa,j)[0]; |
288 |
u[1] = VERTEX(fa,i)[1] - VERTEX(fa,j)[1]; |
289 |
u[2] = VERTEX(fa,i)[2] - VERTEX(fa,j)[2]; |
290 |
if ((r1 = DOT(u,u)) >= fa->area-FTINY) |
291 |
break; |
292 |
} |
293 |
if (i < fa->nv) { /* got one! -- let's align our axes */ |
294 |
r2 = 1.0/sqrt(r1); |
295 |
u[0] *= r2; u[1] *= r2; u[2] *= r2; |
296 |
fcross(v, fa->norm, u); |
297 |
} else /* oh well, we'll just have to wing it */ |
298 |
mkaxes(u, v, fa->norm); |
299 |
/* now, find limits in (u,v) coordinates */ |
300 |
ur[0] = vr[0] = FHUGE; |
301 |
ur[1] = vr[1] = -FHUGE; |
302 |
for (i = 0; i < fa->nv; i++) { |
303 |
r1 = DOT(VERTEX(fa,i),u); |
304 |
if (r1 < ur[0]) ur[0] = r1; |
305 |
if (r1 > ur[1]) ur[1] = r1; |
306 |
r2 = DOT(VERTEX(fa,i),v); |
307 |
if (r2 < vr[0]) vr[0] = r2; |
308 |
if (r2 > vr[1]) vr[1] = r2; |
309 |
} |
310 |
dim[0] = random(); |
311 |
/* sample polygon */ |
312 |
nallow = 5*n*il->nsamps; |
313 |
for (dim[1] = 0; dim[1] < n; dim[1]++) |
314 |
for (i = 0; i < il->nsamps; i++) { |
315 |
/* randomize direction */ |
316 |
h = ilhash(dim, 2) + i; |
317 |
if (il->sd != NULL) { |
318 |
r_BSDF_incvec(dir, il->sd, dim[1], urand(h), xfm); |
319 |
} else { |
320 |
multisamp(sp, 2, urand(h)); |
321 |
alti = dim[1]/nazi; |
322 |
r1 = (alti + sp[0])/nalt; |
323 |
r2 = (dim[1] - alti*nazi + sp[1] - .5)/nazi; |
324 |
flatdir(dn, r1, r2); |
325 |
for (j = 0; j < 3; j++) |
326 |
dir[j] = -dn[0]*u[j] - dn[1]*v[j] - |
327 |
dn[2]*fa->norm[j]; |
328 |
} |
329 |
/* randomize location */ |
330 |
do { |
331 |
multisamp(sp, 2, urand(h+4862+nallow)); |
332 |
r1 = ur[0] + (ur[1]-ur[0]) * sp[0]; |
333 |
r2 = vr[0] + (vr[1]-vr[0]) * sp[1]; |
334 |
for (j = 0; j < 3; j++) |
335 |
org[j] = r1*u[j] + r2*v[j] |
336 |
+ fa->offset*fa->norm[j]; |
337 |
} while (!inface(org, fa) && nallow-- > 0); |
338 |
if (nallow < 0) { |
339 |
objerror(ob, WARNING, "bad aspect"); |
340 |
rayclean(); |
341 |
freeface(ob); |
342 |
return(my_default(ob, il, nm)); |
343 |
} |
344 |
if (il->sd != NULL && DOT(dir, fa->norm) < -FTINY) |
345 |
r1 = -1.0001*il->thick - 5.*FTINY; |
346 |
else |
347 |
r1 = 5.*FTINY; |
348 |
for (j = 0; j < 3; j++) |
349 |
org[j] += r1*fa->norm[j]; |
350 |
/* send sample */ |
351 |
raysamp(dim[1], org, dir); |
352 |
} |
353 |
/* add in direct component? */ |
354 |
if (!directvis && il->flags & IL_LIGHT) { |
355 |
MAT4 ixfm; |
356 |
if (il->sd == NULL) { |
357 |
for (i = 3; i--; ) { |
358 |
ixfm[i][0] = u[i]; |
359 |
ixfm[i][1] = v[i]; |
360 |
ixfm[i][2] = fa->norm[i]; |
361 |
ixfm[i][3] = 0.; |
362 |
} |
363 |
ixfm[3][0] = ixfm[3][1] = ixfm[3][2] = 0.; |
364 |
ixfm[3][3] = 1.; |
365 |
} else if (!invmat4(ixfm, xfm)) |
366 |
objerror(ob, INTERNAL, "cannot invert BSDF transform"); |
367 |
dim[0] = random(); |
368 |
nallow = 10*il->nsamps; |
369 |
for (i = 0; i < il->nsamps; i++) { |
370 |
/* randomize location */ |
371 |
h = dim[0] + samplendx++; |
372 |
do { |
373 |
multisamp(sp, 2, urand(h+nallow)); |
374 |
r1 = ur[0] + (ur[1]-ur[0]) * sp[0]; |
375 |
r2 = vr[0] + (vr[1]-vr[0]) * sp[1]; |
376 |
for (j = 0; j < 3; j++) |
377 |
org[j] = r1*u[j] + r2*v[j] |
378 |
+ fa->offset*fa->norm[j]; |
379 |
} while (!inface(org, fa) && nallow-- > 0); |
380 |
if (nallow < 0) { |
381 |
objerror(ob, WARNING, "bad aspect"); |
382 |
rayclean(); |
383 |
freeface(ob); |
384 |
return(my_default(ob, il, nm)); |
385 |
} |
386 |
/* sample source rays */ |
387 |
srcsamps(il, org, fa->norm, ixfm); |
388 |
} |
389 |
} |
390 |
/* wait for all rays to finish */ |
391 |
rayclean(); |
392 |
if (il->sd != NULL) { /* run distribution through BSDF */ |
393 |
nalt = sqrt(il->sd->nout/PI) + .5; |
394 |
nazi = PI*nalt + .5; |
395 |
redistribute(il->sd, nalt, nazi, u, v, fa->norm, xfm); |
396 |
} |
397 |
/* write out the face and its distribution */ |
398 |
if (average(il, distarr, n)) { |
399 |
if (il->sampdens > 0) |
400 |
flatout(il, distarr, nalt, nazi, u, v, fa->norm); |
401 |
illumout(il, ob); |
402 |
} else |
403 |
printobj(il->altmat, ob); |
404 |
/* clean up */ |
405 |
freeface(ob); |
406 |
return(0); |
407 |
} |
408 |
|
409 |
|
410 |
int |
411 |
my_sphere( /* make an illum sphere */ |
412 |
register OBJREC *ob, |
413 |
struct illum_args *il, |
414 |
char *nm |
415 |
) |
416 |
{ |
417 |
int dim[3]; |
418 |
int n, nalt, nazi; |
419 |
double sp[4], r1, r2, r3; |
420 |
FVECT org, dir; |
421 |
FVECT u, v; |
422 |
register int i, j; |
423 |
/* check arguments */ |
424 |
if (ob->oargs.nfargs != 4) |
425 |
objerror(ob, USER, "bad # of arguments"); |
426 |
/* set up sampling */ |
427 |
if (il->sampdens <= 0) |
428 |
nalt = nazi = 1; |
429 |
else { |
430 |
n = 4.*PI * il->sampdens; |
431 |
nalt = sqrt(2./PI*n) + .5; |
432 |
nazi = PI/2.*nalt + .5; |
433 |
} |
434 |
if (il->sd != NULL) |
435 |
objerror(ob, WARNING, "BSDF ignored"); |
436 |
n = nalt*nazi; |
437 |
newdist(n); |
438 |
dim[0] = random(); |
439 |
/* sample sphere */ |
440 |
for (dim[1] = 0; dim[1] < nalt; dim[1]++) |
441 |
for (dim[2] = 0; dim[2] < nazi; dim[2]++) |
442 |
for (i = 0; i < il->nsamps; i++) { |
443 |
/* next sample point */ |
444 |
multisamp(sp, 4, urand(ilhash(dim,3)+i)); |
445 |
/* random direction */ |
446 |
r1 = (dim[1] + sp[0])/nalt; |
447 |
r2 = (dim[2] + sp[1] - .5)/nazi; |
448 |
rounddir(dir, r1, r2); |
449 |
/* random location */ |
450 |
mkaxes(u, v, dir); /* yuck! */ |
451 |
r3 = sqrt(sp[2]); |
452 |
r2 = 2.*PI*sp[3]; |
453 |
r1 = r3*ob->oargs.farg[3]*cos(r2); |
454 |
r2 = r3*ob->oargs.farg[3]*sin(r2); |
455 |
r3 = ob->oargs.farg[3]*sqrt(1.01-r3*r3); |
456 |
for (j = 0; j < 3; j++) { |
457 |
org[j] = ob->oargs.farg[j] + r1*u[j] + r2*v[j] + |
458 |
r3*dir[j]; |
459 |
dir[j] = -dir[j]; |
460 |
} |
461 |
/* send sample */ |
462 |
raysamp(dim[1]*nazi+dim[2], org, dir); |
463 |
} |
464 |
/* wait for all rays to finish */ |
465 |
rayclean(); |
466 |
/* write out the sphere and its distribution */ |
467 |
if (average(il, distarr, n)) { |
468 |
if (il->sampdens > 0) |
469 |
roundout(il, distarr, nalt, nazi); |
470 |
else |
471 |
objerror(ob, WARNING, "diffuse distribution"); |
472 |
illumout(il, ob); |
473 |
} else |
474 |
printobj(il->altmat, ob); |
475 |
/* clean up */ |
476 |
return(1); |
477 |
} |
478 |
|
479 |
|
480 |
int |
481 |
my_ring( /* make an illum ring */ |
482 |
OBJREC *ob, |
483 |
struct illum_args *il, |
484 |
char *nm |
485 |
) |
486 |
{ |
487 |
int dim[2]; |
488 |
int n, nalt, nazi, alti; |
489 |
double sp[2], r1, r2, r3; |
490 |
int h; |
491 |
FVECT dn, org, dir; |
492 |
FVECT u, v; |
493 |
MAT4 xfm; |
494 |
CONE *co; |
495 |
int i, j; |
496 |
/* get/check arguments */ |
497 |
co = getcone(ob, 0); |
498 |
/* set up sampling */ |
499 |
if (il->sd != NULL) { |
500 |
if (!getBSDF_xfm(xfm, co->ad, il->udir)) { |
501 |
objerror(ob, WARNING, "illegal up direction"); |
502 |
freecone(ob); |
503 |
return(my_default(ob, il, nm)); |
504 |
} |
505 |
n = il->sd->ninc; |
506 |
} else { |
507 |
if (il->sampdens <= 0) { |
508 |
nalt = nazi = 1; /* diffuse assumption */ |
509 |
} else { |
510 |
n = PI * il->sampdens; |
511 |
nalt = sqrt(n/PI) + .5; |
512 |
nazi = PI*nalt + .5; |
513 |
} |
514 |
n = nazi*nalt; |
515 |
} |
516 |
newdist(n); |
517 |
mkaxes(u, v, co->ad); |
518 |
dim[0] = random(); |
519 |
/* sample disk */ |
520 |
for (dim[1] = 0; dim[1] < n; dim[1]++) |
521 |
for (i = 0; i < il->nsamps; i++) { |
522 |
/* next sample point */ |
523 |
h = ilhash(dim,2) + i; |
524 |
/* randomize direction */ |
525 |
if (il->sd != NULL) { |
526 |
r_BSDF_incvec(dir, il->sd, dim[1], urand(h), xfm); |
527 |
} else { |
528 |
multisamp(sp, 2, urand(h)); |
529 |
alti = dim[1]/nazi; |
530 |
r1 = (alti + sp[0])/nalt; |
531 |
r2 = (dim[1] - alti*nazi + sp[1] - .5)/nazi; |
532 |
flatdir(dn, r1, r2); |
533 |
for (j = 0; j < 3; j++) |
534 |
dir[j] = -dn[0]*u[j] - dn[1]*v[j] - dn[2]*co->ad[j]; |
535 |
} |
536 |
/* randomize location */ |
537 |
multisamp(sp, 2, urand(h+8371)); |
538 |
r3 = sqrt(CO_R0(co)*CO_R0(co) + |
539 |
sp[0]*(CO_R1(co)*CO_R1(co) - CO_R0(co)*CO_R0(co))); |
540 |
r2 = 2.*PI*sp[1]; |
541 |
r1 = r3*cos(r2); |
542 |
r2 = r3*sin(r2); |
543 |
if (il->sd != NULL && DOT(dir, co->ad) < -FTINY) |
544 |
r3 = -1.0001*il->thick - 5.*FTINY; |
545 |
else |
546 |
r3 = 5.*FTINY; |
547 |
for (j = 0; j < 3; j++) |
548 |
org[j] = CO_P0(co)[j] + r1*u[j] + r2*v[j] + |
549 |
r3*co->ad[j]; |
550 |
/* send sample */ |
551 |
raysamp(dim[1], org, dir); |
552 |
} |
553 |
/* add in direct component? */ |
554 |
if (!directvis && il->flags & IL_LIGHT) { |
555 |
MAT4 ixfm; |
556 |
if (il->sd == NULL) { |
557 |
for (i = 3; i--; ) { |
558 |
ixfm[i][0] = u[i]; |
559 |
ixfm[i][1] = v[i]; |
560 |
ixfm[i][2] = co->ad[i]; |
561 |
ixfm[i][3] = 0.; |
562 |
} |
563 |
ixfm[3][0] = ixfm[3][1] = ixfm[3][2] = 0.; |
564 |
ixfm[3][3] = 1.; |
565 |
} else if (!invmat4(ixfm, xfm)) |
566 |
objerror(ob, INTERNAL, "cannot invert BSDF transform"); |
567 |
dim[0] = random(); |
568 |
for (i = 0; i < il->nsamps; i++) { |
569 |
/* randomize location */ |
570 |
h = dim[0] + samplendx++; |
571 |
multisamp(sp, 2, urand(h)); |
572 |
r3 = sqrt(CO_R0(co)*CO_R0(co) + |
573 |
sp[0]*(CO_R1(co)*CO_R1(co) - CO_R0(co)*CO_R0(co))); |
574 |
r2 = 2.*PI*sp[1]; |
575 |
r1 = r3*cos(r2); |
576 |
r2 = r3*sin(r2); |
577 |
for (j = 0; j < 3; j++) |
578 |
org[j] = CO_P0(co)[j] + r1*u[j] + r2*v[j]; |
579 |
/* sample source rays */ |
580 |
srcsamps(il, org, co->ad, ixfm); |
581 |
} |
582 |
} |
583 |
/* wait for all rays to finish */ |
584 |
rayclean(); |
585 |
if (il->sd != NULL) { /* run distribution through BSDF */ |
586 |
nalt = sqrt(il->sd->nout/PI) + .5; |
587 |
nazi = PI*nalt + .5; |
588 |
redistribute(il->sd, nalt, nazi, u, v, co->ad, xfm); |
589 |
} |
590 |
/* write out the ring and its distribution */ |
591 |
if (average(il, distarr, n)) { |
592 |
if (il->sampdens > 0) |
593 |
flatout(il, distarr, nalt, nazi, u, v, co->ad); |
594 |
illumout(il, ob); |
595 |
} else |
596 |
printobj(il->altmat, ob); |
597 |
/* clean up */ |
598 |
freecone(ob); |
599 |
return(1); |
600 |
} |