7 |
|
* External symbols declared in source.h |
8 |
|
*/ |
9 |
|
|
10 |
– |
#include "copyright.h" |
11 |
– |
|
10 |
|
#include "ray.h" |
13 |
– |
|
11 |
|
#include "otypes.h" |
12 |
< |
|
16 |
< |
#include "otspecial.h" |
17 |
< |
|
12 |
> |
#include "rtotypes.h" |
13 |
|
#include "source.h" |
19 |
– |
|
14 |
|
#include "random.h" |
15 |
|
|
16 |
|
extern double ssampdist; /* scatter sampling distance */ |
39 |
|
static CNTPTR *cntord; /* source ordering in direct() */ |
40 |
|
static int maxcntr = 0; /* size of contribution arrays */ |
41 |
|
|
42 |
+ |
static int cntcmp(const void *p1, const void *p2); |
43 |
|
|
44 |
< |
OBJREC * /* find an object's actual material */ |
44 |
> |
|
45 |
> |
extern OBJREC * /* find an object's actual material */ |
46 |
|
findmaterial(register OBJREC *o) |
47 |
|
{ |
48 |
|
while (!ismaterial(o->otype)) { |
53 |
– |
if (ismixture(o->otype)) |
54 |
– |
return(NULL); /* reject mixed materials */ |
49 |
|
if (o->otype == MOD_ALIAS && o->oargs.nsargs) { |
50 |
|
OBJECT aobj; |
51 |
|
OBJREC *ao; |
55 |
|
ao = objptr(aobj); |
56 |
|
if (ismaterial(ao->otype)) |
57 |
|
return(ao); |
58 |
+ |
if (ao->otype == MOD_ALIAS) { |
59 |
+ |
o = ao; |
60 |
+ |
continue; |
61 |
+ |
} |
62 |
|
} |
63 |
|
if (o->omod == OVOID) |
64 |
|
return(NULL); |
65 |
|
o = objptr(o->omod); |
66 |
|
} |
67 |
< |
return(o); |
67 |
> |
return(o); /* mixtures will return NULL */ |
68 |
|
} |
69 |
|
|
70 |
|
|
71 |
< |
void |
72 |
< |
marksources() /* find and mark source objects */ |
71 |
> |
extern void |
72 |
> |
marksources(void) /* find and mark source objects */ |
73 |
|
{ |
74 |
|
int foundsource = 0; |
75 |
|
int i; |
85 |
|
if (!issurface(o->otype) || o->omod == OVOID) |
86 |
|
continue; |
87 |
|
/* find material */ |
88 |
< |
m = findmaterial(o); |
89 |
< |
if (m == NULL || !islight(m->otype)) |
88 |
> |
m = findmaterial(objptr(o->omod)); |
89 |
> |
if (m == NULL) |
90 |
> |
continue; |
91 |
> |
if (m->otype == MAT_CLIP) { |
92 |
> |
markclip(m); /* special case for antimatter */ |
93 |
> |
continue; |
94 |
> |
} |
95 |
> |
if (!islight(m->otype)) |
96 |
|
continue; /* not source modifier */ |
97 |
|
|
98 |
|
if (m->oargs.nfargs != (m->otype == MAT_GLOW ? 4 : |
133 |
|
} |
134 |
|
} |
135 |
|
#if SHADCACHE |
136 |
< |
source[ns].obscache = NULL; |
136 |
> |
initobscache(ns); |
137 |
|
#endif |
138 |
|
if (!(source[ns].sflags & SSKIP)) |
139 |
|
foundsource++; |
155 |
|
} |
156 |
|
|
157 |
|
|
158 |
< |
void |
159 |
< |
freesources() /* free all source structures */ |
158 |
> |
extern void |
159 |
> |
freesources(void) /* free all source structures */ |
160 |
|
{ |
161 |
|
if (nsources > 0) { |
162 |
|
#if SHADCACHE |
177 |
|
} |
178 |
|
|
179 |
|
|
180 |
< |
int |
180 |
> |
extern int |
181 |
|
srcray( /* send a ray to a source, return domega */ |
182 |
< |
register RAY *sr, /* returned source ray */ |
183 |
< |
RAY *r, /* ray which hit object */ |
184 |
< |
SRCINDEX *si /* source sample index */ |
182 |
> |
register RAY *sr, /* returned source ray */ |
183 |
> |
RAY *r, /* ray which hit object */ |
184 |
> |
SRCINDEX *si /* source sample index */ |
185 |
|
) |
186 |
|
{ |
187 |
< |
double d; /* distance to source */ |
188 |
< |
register SRCREC *srcp; |
187 |
> |
double d; /* distance to source */ |
188 |
> |
register SRCREC *srcp; |
189 |
|
|
190 |
< |
rayorigin(sr, r, SHADOW, 1.0); /* ignore limits */ |
190 |
> |
rayorigin(sr, SHADOW, r, NULL); /* ignore limits */ |
191 |
|
|
192 |
< |
while ((d = nextssamp(sr, si)) != 0.0) { |
193 |
< |
sr->rsrc = si->sn; /* remember source */ |
194 |
< |
srcp = source + si->sn; |
195 |
< |
if (srcp->sflags & SDISTANT) { |
196 |
< |
if (srcp->sflags & SSPOT && spotout(sr, srcp->sl.s)) |
197 |
< |
continue; |
198 |
< |
return(1); /* sample OK */ |
199 |
< |
} |
192 |
> |
if (r == NULL) |
193 |
> |
sr->rmax = 0.0; |
194 |
> |
|
195 |
> |
while ((d = nextssamp(sr, si)) != 0.0) { |
196 |
> |
sr->rsrc = si->sn; /* remember source */ |
197 |
> |
srcp = source + si->sn; |
198 |
> |
if (srcp->sflags & SDISTANT) { |
199 |
> |
if (srcp->sflags & SSPOT && spotout(sr, srcp->sl.s)) |
200 |
> |
continue; |
201 |
> |
return(1); /* sample OK */ |
202 |
> |
} |
203 |
|
/* local source */ |
204 |
|
/* check proximity */ |
205 |
< |
if (srcp->sflags & SPROX && d > srcp->sl.prox) |
199 |
< |
continue; |
200 |
< |
/* check angle */ |
201 |
< |
if (srcp->sflags & SSPOT) { |
202 |
< |
if (spotout(sr, srcp->sl.s)) |
205 |
> |
if (srcp->sflags & SPROX && d > srcp->sl.prox) |
206 |
|
continue; |
207 |
+ |
/* check angle */ |
208 |
+ |
if (srcp->sflags & SSPOT) { |
209 |
+ |
if (spotout(sr, srcp->sl.s)) |
210 |
+ |
continue; |
211 |
|
/* adjust solid angle */ |
212 |
< |
si->dom *= d*d; |
213 |
< |
d += srcp->sl.s->flen; |
214 |
< |
si->dom /= d*d; |
212 |
> |
si->dom *= d*d; |
213 |
> |
d += srcp->sl.s->flen; |
214 |
> |
si->dom /= d*d; |
215 |
> |
} |
216 |
> |
return(1); /* sample OK */ |
217 |
|
} |
218 |
< |
return(1); /* sample OK */ |
210 |
< |
} |
211 |
< |
return(0); /* no more samples */ |
218 |
> |
return(0); /* no more samples */ |
219 |
|
} |
220 |
|
|
221 |
|
|
222 |
< |
void |
222 |
> |
extern void |
223 |
|
srcvalue( /* punch ray to source and compute value */ |
224 |
< |
register RAY *r |
224 |
> |
register RAY *r |
225 |
|
) |
226 |
|
{ |
227 |
|
register SRCREC *sp; |
261 |
|
} |
262 |
|
|
263 |
|
|
264 |
< |
int |
264 |
> |
static int |
265 |
> |
transillum( /* check if material is transparent illum */ |
266 |
> |
OBJECT obj |
267 |
> |
) |
268 |
> |
{ |
269 |
> |
OBJREC *m = findmaterial(objptr(obj)); |
270 |
> |
|
271 |
> |
if (m == NULL) |
272 |
> |
return(1); |
273 |
> |
if (m->otype != MAT_ILLUM) |
274 |
> |
return(0); |
275 |
> |
return(!m->oargs.nsargs || !strcmp(m->oargs.sarg[0], VOIDID)); |
276 |
> |
} |
277 |
> |
|
278 |
> |
|
279 |
> |
extern int |
280 |
|
sourcehit( /* check to see if ray hit distant source */ |
281 |
< |
register RAY *r |
281 |
> |
register RAY *r |
282 |
|
) |
283 |
|
{ |
284 |
+ |
int glowsrc = -1; |
285 |
+ |
int transrc = -1; |
286 |
|
int first, last; |
287 |
|
register int i; |
288 |
|
|
291 |
|
} else { /* otherwise check all */ |
292 |
|
first = 0; last = nsources-1; |
293 |
|
} |
294 |
< |
for (i = first; i <= last; i++) |
295 |
< |
if ((source[i].sflags & (SDISTANT|SVIRTUAL)) == SDISTANT) |
296 |
< |
/* |
297 |
< |
* Check to see if ray is within |
298 |
< |
* solid angle of source. |
299 |
< |
*/ |
300 |
< |
if (2.0*PI * (1.0 - DOT(source[i].sloc,r->rdir)) |
301 |
< |
<= source[i].ss2) { |
302 |
< |
r->ro = source[i].so; |
303 |
< |
if (!(source[i].sflags & SSKIP)) |
304 |
< |
break; |
305 |
< |
} |
306 |
< |
|
307 |
< |
if (r->ro != NULL) { |
308 |
< |
r->robj = objndx(r->ro); |
309 |
< |
for (i = 0; i < 3; i++) |
310 |
< |
r->ron[i] = -r->rdir[i]; |
311 |
< |
r->rod = 1.0; |
312 |
< |
r->pert[0] = r->pert[1] = r->pert[2] = 0.0; |
313 |
< |
r->uv[0] = r->uv[1] = 0.0; |
314 |
< |
r->rox = NULL; |
315 |
< |
return(1); |
294 |
> |
for (i = first; i <= last; i++) { |
295 |
> |
if ((source[i].sflags & (SDISTANT|SVIRTUAL)) != SDISTANT) |
296 |
> |
continue; |
297 |
> |
/* |
298 |
> |
* Check to see if ray is within |
299 |
> |
* solid angle of source. |
300 |
> |
*/ |
301 |
> |
if (2.*PI*(1. - DOT(source[i].sloc,r->rdir)) > source[i].ss2) |
302 |
> |
continue; |
303 |
> |
/* is it the only possibility? */ |
304 |
> |
if (first == last) { |
305 |
> |
r->ro = source[i].so; |
306 |
> |
break; |
307 |
> |
} |
308 |
> |
/* |
309 |
> |
* If it's a glow or transparent illum, just remember it. |
310 |
> |
*/ |
311 |
> |
if (source[i].sflags & SSKIP) { |
312 |
> |
if (glowsrc < 0) |
313 |
> |
glowsrc = i; |
314 |
> |
continue; |
315 |
> |
} |
316 |
> |
if (transillum(source[i].so->omod)) { |
317 |
> |
if (transrc < 0) |
318 |
> |
transrc = i; |
319 |
> |
continue; |
320 |
> |
} |
321 |
> |
r->ro = source[i].so; /* otherwise, use first hit */ |
322 |
> |
break; |
323 |
|
} |
324 |
< |
return(0); |
325 |
< |
} |
326 |
< |
|
327 |
< |
|
328 |
< |
#if SHADCACHE /* preemptive shadow checking */ |
329 |
< |
#define ABS(x) ((x)>0 ? (x) : -(x)) |
330 |
< |
|
331 |
< |
static void /* find closest blockers to source */ |
332 |
< |
initobscache(SRCREC *srcp) |
333 |
< |
{ |
303 |
< |
int i; |
304 |
< |
int cachelen; |
305 |
< |
|
306 |
< |
if (srcp->sflags & SDISTANT) |
307 |
< |
cachelen = 4*SHADCACHE*SHADCACHE; |
308 |
< |
else if (srcp->sflags & SFLAT) |
309 |
< |
cachelen = SHADCACHE*SHADCACHE*3 + (SHADCACHE&1)*SHADCACHE*4; |
310 |
< |
else /* spherical distribution */ |
311 |
< |
cachelen = SHADCACHE*SHADCACHE*6; |
312 |
< |
/* allocate cache */ |
313 |
< |
DCHECK(srcp->obscache != NULL, |
314 |
< |
CONSISTENCY, "initobscache() called twice"); |
315 |
< |
srcp->obscache = (OBSCACHE *)malloc(sizeof(OBSCACHE) + |
316 |
< |
sizeof(OBJECT)*(cachelen-1)); |
317 |
< |
if (srcp->obscache == NULL) |
318 |
< |
error(SYSTEM, "out of memory in initobscache()"); |
319 |
< |
/* set parameters */ |
320 |
< |
if (srcp->sflags & SDISTANT) { |
321 |
< |
int ax, ax1, ax2; |
322 |
< |
RREAL amax = 0; |
323 |
< |
for (ax1 = 3; ax1--; ) |
324 |
< |
if (ABS(srcp->sloc[ax1]) > amax) { |
325 |
< |
amax = ABS(srcp->sloc[ax1]); |
326 |
< |
ax = ax1; |
327 |
< |
} |
328 |
< |
srcp->obscache->p.d.ax = ax; |
329 |
< |
ax1 = (ax+1)%3; |
330 |
< |
ax2 = (ax+2)%3; |
331 |
< |
VCOPY(srcp->obscache->p.d.o, thescene.cuorg); |
332 |
< |
if (srcp->sloc[ax] > 0) |
333 |
< |
srcp->obscache->p.d.o[ax] += thescene.cusize; |
334 |
< |
if (srcp->sloc[ax1] < 0) |
335 |
< |
srcp->obscache->p.d.o[ax1] += thescene.cusize * |
336 |
< |
srcp->sloc[ax1] / ABS(srcp->sloc[ax]); |
337 |
< |
if (srcp->sloc[ax2] < 0) |
338 |
< |
srcp->obscache->p.d.o[ax2] += thescene.cusize * |
339 |
< |
srcp->sloc[ax2] / ABS(srcp->sloc[ax]); |
340 |
< |
srcp->obscache->p.d.e1 = (1.-FTINY) / (thescene.cusize*(1. + |
341 |
< |
fabs(srcp->sloc[ax1]/srcp->sloc[ax]))); |
342 |
< |
srcp->obscache->p.d.e2 = (1.-FTINY) / (thescene.cusize*(1. + |
343 |
< |
fabs(srcp->sloc[ax2]/srcp->sloc[ax]))); |
344 |
< |
} else if (srcp->sflags & SFLAT) { |
345 |
< |
VCOPY(srcp->obscache->p.f.u, srcp->ss[SU]); |
346 |
< |
normalize(srcp->obscache->p.f.u); |
347 |
< |
fcross(srcp->obscache->p.f.v, |
348 |
< |
srcp->snorm, srcp->obscache->p.f.u); |
324 |
> |
/* |
325 |
> |
* Do we need fallback? |
326 |
> |
*/ |
327 |
> |
if (r->ro == NULL) { |
328 |
> |
if (transrc >= 0 && r->crtype & (AMBIENT|SPECULAR)) |
329 |
> |
return(0); /* avoid overcounting */ |
330 |
> |
if (glowsrc >= 0) |
331 |
> |
r->ro = source[glowsrc].so; |
332 |
> |
else |
333 |
> |
return(0); /* nothing usable */ |
334 |
|
} |
335 |
< |
/* XXX Should cast rays from source */ |
336 |
< |
for (i = cachelen; i--; ) |
337 |
< |
srcp->obscache->obs[i] = OVOID; |
335 |
> |
/* |
336 |
> |
* Make assignments. |
337 |
> |
*/ |
338 |
> |
r->robj = objndx(r->ro); |
339 |
> |
for (i = 0; i < 3; i++) |
340 |
> |
r->ron[i] = -r->rdir[i]; |
341 |
> |
r->rod = 1.0; |
342 |
> |
r->pert[0] = r->pert[1] = r->pert[2] = 0.0; |
343 |
> |
r->uv[0] = r->uv[1] = 0.0; |
344 |
> |
r->rox = NULL; |
345 |
> |
return(1); |
346 |
|
} |
347 |
|
|
348 |
|
|
356 |
– |
static OBJECT * /* return occluder cache entry */ |
357 |
– |
srcobstructp(register RAY *r) |
358 |
– |
{ |
359 |
– |
static OBJECT noobs; |
360 |
– |
SRCREC *srcp; |
361 |
– |
int ondx; |
362 |
– |
|
363 |
– |
DCHECK(r->rsrc < 0, CONSISTENCY, |
364 |
– |
"srcobstructp() called with unaimed ray"); |
365 |
– |
noobs = OVOID; |
366 |
– |
srcp = &source[r->rsrc]; |
367 |
– |
if (srcp->obscache == NULL) /* initialize cache */ |
368 |
– |
initobscache(srcp); |
369 |
– |
/* compute cache index */ |
370 |
– |
if (srcp->sflags & SDISTANT) { |
371 |
– |
int ax, ax1, ax2; |
372 |
– |
double t; |
373 |
– |
ax = srcp->obscache->p.d.ax; |
374 |
– |
if ((ax1 = ax+1) >= 3) ax1 -= 3; |
375 |
– |
if ((ax2 = ax+2) >= 3) ax2 -= 3; |
376 |
– |
t = (srcp->obscache->p.d.o[ax] - r->rorg[ax]) / srcp->sloc[ax]; |
377 |
– |
if (t <= FTINY) |
378 |
– |
return &noobs; /* could happen if ray is outside */ |
379 |
– |
ondx = 2*SHADCACHE*(int)(2*SHADCACHE*srcp->obscache->p.d.e1 * |
380 |
– |
(r->rorg[ax1] + t*srcp->sloc[ax1] - |
381 |
– |
srcp->obscache->p.d.o[ax1])); |
382 |
– |
ondx += (int)(2*SHADCACHE*srcp->obscache->p.d.e2 * |
383 |
– |
(r->rorg[ax2] + t*srcp->sloc[ax2] - |
384 |
– |
srcp->obscache->p.d.o[ax2])); |
385 |
– |
} else if (srcp->sflags & SFLAT) { |
386 |
– |
FVECT sd; |
387 |
– |
RREAL sd0m, sd1m; |
388 |
– |
sd[0] = -DOT(r->rdir, srcp->obscache->p.f.u); |
389 |
– |
sd[1] = -DOT(r->rdir, srcp->obscache->p.f.v); |
390 |
– |
sd[2] = -DOT(r->rdir, srcp->snorm); |
391 |
– |
if (sd[2] < 0) |
392 |
– |
return &noobs; /* shouldn't happen */ |
393 |
– |
sd0m = ABS(sd[0]); |
394 |
– |
sd1m = ABS(sd[1]); |
395 |
– |
if (sd[2] >= sd0m && sd[2] >= sd1m) { |
396 |
– |
ondx = SHADCACHE*(int)(SHADCACHE*(.5-FTINY) * |
397 |
– |
(1. + sd[0]/sd[2])); |
398 |
– |
ondx += (int)(SHADCACHE*(.5-FTINY) * |
399 |
– |
(1. + sd[1]/sd[2])); |
400 |
– |
} else if (sd0m >= sd1m) { |
401 |
– |
ondx = SHADCACHE*SHADCACHE; |
402 |
– |
if (sd[0] < 0) |
403 |
– |
ondx += ((SHADCACHE+1)>>1)*SHADCACHE; |
404 |
– |
ondx += SHADCACHE*(int)(SHADCACHE*(.5-FTINY) * |
405 |
– |
sd[2]/sd0m); |
406 |
– |
ondx += (int)(SHADCACHE*(.5-FTINY) * |
407 |
– |
(1. + sd[1]/sd0m)); |
408 |
– |
} else /* sd1m > sd0m */ { |
409 |
– |
ondx = SHADCACHE*SHADCACHE + |
410 |
– |
((SHADCACHE+1)>>1)*SHADCACHE*2; |
411 |
– |
if (sd[1] < 0) |
412 |
– |
ondx += ((SHADCACHE+1)>>1)*SHADCACHE; |
413 |
– |
ondx += SHADCACHE*(int)(SHADCACHE*(.5-FTINY) * |
414 |
– |
sd[2]/sd1m); |
415 |
– |
ondx += (int)(SHADCACHE*(.5-FTINY) * |
416 |
– |
(1. + sd[0]/sd1m)); |
417 |
– |
} |
418 |
– |
} else /* spherical distribution */ { |
419 |
– |
int ax, ax1, ax2; |
420 |
– |
RREAL amax = 0; |
421 |
– |
for (ax1 = 3; ax1--; ) |
422 |
– |
if (ABS(r->rdir[ax1]) > amax) { |
423 |
– |
amax = ABS(r->rdir[ax1]); |
424 |
– |
ax = ax1; |
425 |
– |
} |
426 |
– |
if ((ax1 = ax+1) >= 3) ax1 -= 3; |
427 |
– |
if ((ax2 = ax+2) >= 3) ax2 -= 3; |
428 |
– |
ondx = 2*SHADCACHE*SHADCACHE * ax; |
429 |
– |
if (r->rdir[ax] < 0) |
430 |
– |
ondx += SHADCACHE*SHADCACHE; |
431 |
– |
ondx += SHADCACHE*(int)(SHADCACHE*(.5-FTINY) * |
432 |
– |
(1. + r->rdir[ax1]/amax)); |
433 |
– |
ondx += (int)(SHADCACHE*(.5-FTINY) * |
434 |
– |
(1. + r->rdir[ax2]/amax)); |
435 |
– |
} |
436 |
– |
/* return cache pointer */ |
437 |
– |
return(&srcp->obscache->obs[ondx]); |
438 |
– |
} |
439 |
– |
|
440 |
– |
|
441 |
– |
void /* free obstruction cache */ |
442 |
– |
freeobscache(SRCREC *srcp) |
443 |
– |
{ |
444 |
– |
if (srcp->obscache == NULL) |
445 |
– |
return; |
446 |
– |
free((void *)srcp->obscache); |
447 |
– |
srcp->obscache = NULL; |
448 |
– |
} |
449 |
– |
|
450 |
– |
|
451 |
– |
void /* record a source blocker */ |
452 |
– |
srcblocker(register RAY *r) |
453 |
– |
{ |
454 |
– |
OBJREC *m; |
455 |
– |
|
456 |
– |
if (r->robj == OVOID || objptr(r->robj) != r->ro || |
457 |
– |
isvolume(r->ro->otype)) |
458 |
– |
return; /* don't record complex blockers */ |
459 |
– |
m = findmaterial(r->ro); |
460 |
– |
if (m == NULL) |
461 |
– |
return; /* no material?! */ |
462 |
– |
if (!(ofun[m->otype].flags & T_OPAQUE)) |
463 |
– |
return; /* material not a reliable blocker */ |
464 |
– |
|
465 |
– |
*srcobstructp(r) = r->robj; /* else record obstructor */ |
466 |
– |
} |
467 |
– |
|
468 |
– |
|
469 |
– |
int /* check ray against cached blocker */ |
470 |
– |
srcblocked(RAY *r) |
471 |
– |
{ |
472 |
– |
OBJECT obs = *srcobstructp(r); |
473 |
– |
OBJREC *op; |
474 |
– |
|
475 |
– |
if (obs == OVOID) |
476 |
– |
return(0); |
477 |
– |
op = objptr(obs); /* check for intersection */ |
478 |
– |
return ((*ofun[op->otype].funp)(op, r)); |
479 |
– |
} |
480 |
– |
|
481 |
– |
#endif |
482 |
– |
|
483 |
– |
|
349 |
|
static int |
350 |
|
cntcmp( /* contribution compare (descending) */ |
351 |
< |
const void *p1, |
352 |
< |
const void *p2 |
351 |
> |
const void *p1, |
352 |
> |
const void *p2 |
353 |
|
) |
354 |
|
{ |
355 |
|
register const CNTPTR *sc1 = (const CNTPTR *)p1; |
363 |
|
} |
364 |
|
|
365 |
|
|
366 |
< |
void |
366 |
> |
extern void |
367 |
|
direct( /* add direct component */ |
368 |
< |
RAY *r, /* ray that hit surface */ |
369 |
< |
void (*f)(), /* direct component coefficient function */ |
370 |
< |
char *p /* data for f */ |
368 |
> |
RAY *r, /* ray that hit surface */ |
369 |
> |
srcdirf_t *f, /* direct component coefficient function */ |
370 |
> |
void *p /* data for f */ |
371 |
|
) |
372 |
|
{ |
508 |
– |
extern void (*trace)(); |
373 |
|
register int sn; |
374 |
|
register CONTRIB *scp; |
375 |
|
SRCINDEX si; |
397 |
|
scp->sno = sr.rsrc; |
398 |
|
/* compute coefficient */ |
399 |
|
(*f)(scp->coef, p, sr.rdir, si.dom); |
400 |
< |
cntord[sn].brt = bright(scp->coef); |
400 |
> |
cntord[sn].brt = intens(scp->coef); |
401 |
|
if (cntord[sn].brt <= 0.0) |
402 |
|
continue; |
403 |
|
#if SHADCACHE |
408 |
|
} |
409 |
|
#endif |
410 |
|
VCOPY(scp->dir, sr.rdir); |
411 |
+ |
copycolor(sr.rcoef, scp->coef); |
412 |
|
/* compute potential */ |
413 |
|
sr.revf = srcvalue; |
414 |
|
rayvalue(&sr); |
415 |
+ |
multcolor(sr.rcol, sr.rcoef); |
416 |
|
copycolor(scp->val, sr.rcol); |
417 |
< |
multcolor(scp->val, scp->coef); |
552 |
< |
cntord[sn].brt = bright(scp->val); |
417 |
> |
cntord[sn].brt = bright(sr.rcol); |
418 |
|
} |
419 |
|
/* sort contributions */ |
420 |
|
qsort(cntord, sn, sizeof(CNTPTR), cntcmp); |
452 |
|
break; |
453 |
|
scp = srccnt + cntord[sn].sndx; |
454 |
|
/* test for hit */ |
455 |
< |
rayorigin(&sr, r, SHADOW, 1.0); |
455 |
> |
rayorigin(&sr, SHADOW, r, NULL); |
456 |
> |
copycolor(sr.rcoef, scp->coef); |
457 |
|
VCOPY(sr.rdir, scp->dir); |
458 |
|
sr.rsrc = scp->sno; |
459 |
|
/* keep statistics */ |
466 |
|
source[scp->sno].sflags & SFOLLOW )) { |
467 |
|
/* follow entire path */ |
468 |
|
raycont(&sr); |
603 |
– |
rayparticipate(&sr); |
469 |
|
if (trace != NULL) |
470 |
|
(*trace)(&sr); /* trace execution */ |
471 |
|
if (bright(sr.rcol) <= FTINY) { |
472 |
|
#if SHADCACHE |
473 |
|
if ((scp <= srccnt || scp[-1].sno != scp->sno) |
474 |
< |
&& (scp >= srccnt+ncnts || |
474 |
> |
&& (scp >= srccnt+ncnts-1 || |
475 |
|
scp[1].sno != scp->sno)) |
476 |
|
srcblocker(&sr); |
477 |
|
#endif |
478 |
|
continue; /* missed! */ |
479 |
|
} |
480 |
+ |
rayparticipate(&sr); |
481 |
+ |
multcolor(sr.rcol, sr.rcoef); |
482 |
|
copycolor(scp->val, sr.rcol); |
483 |
< |
multcolor(scp->val, scp->coef); |
483 |
> |
} else if (trace != NULL && |
484 |
> |
(source[scp->sno].sflags & (SDISTANT|SVIRTUAL|SFOLLOW)) |
485 |
> |
== (SDISTANT|SFOLLOW) && |
486 |
> |
sourcehit(&sr) && rayshade(&sr, sr.ro->omod)) { |
487 |
> |
(*trace)(&sr); /* trace execution */ |
488 |
> |
/* skip call to rayparticipate() & scp->val update */ |
489 |
|
} |
490 |
|
/* add contribution if hit */ |
491 |
|
addcolor(r->rcol, scp->val); |
507 |
|
scp = srccnt + cntord[sn].sndx; |
508 |
|
prob = hwt * (double)source[scp->sno].nhits / |
509 |
|
(double)source[scp->sno].ntests; |
510 |
< |
if (prob > 1.0) |
511 |
< |
prob = 1.0; |
640 |
< |
scalecolor(scp->val, prob); |
510 |
> |
if (prob < 1.0) |
511 |
> |
scalecolor(scp->val, prob); |
512 |
|
addcolor(r->rcol, scp->val); |
513 |
|
} |
514 |
|
} |
515 |
|
|
516 |
|
|
517 |
< |
void |
517 |
> |
extern void |
518 |
|
srcscatter( /* compute source scattering into ray */ |
519 |
< |
register RAY *r |
519 |
> |
register RAY *r |
520 |
|
) |
521 |
|
{ |
522 |
|
int oldsampndx; |
555 |
|
sr.rorg[0] = r->rorg[0] + r->rdir[0]*t; |
556 |
|
sr.rorg[1] = r->rorg[1] + r->rdir[1]*t; |
557 |
|
sr.rorg[2] = r->rorg[2] + r->rdir[2]*t; |
687 |
– |
sr.rmax = 0.; |
558 |
|
initsrcindex(&si); /* sample ray to this source */ |
559 |
|
si.sn = r->slights[i]; |
560 |
|
nopart(&si, &sr); |
561 |
|
if (!srcray(&sr, NULL, &si) || |
562 |
|
sr.rsrc != r->slights[i]) |
563 |
|
continue; /* no path */ |
564 |
+ |
#if SHADCACHE |
565 |
+ |
if (srcblocked(&sr)) /* check shadow cache */ |
566 |
+ |
continue; |
567 |
+ |
#endif |
568 |
|
copycolor(sr.cext, r->cext); |
569 |
|
copycolor(sr.albedo, r->albedo); |
570 |
|
sr.gecc = r->gecc; |
571 |
|
sr.slights = r->slights; |
572 |
|
rayvalue(&sr); /* eval. source ray */ |
573 |
< |
if (bright(sr.rcol) <= FTINY) |
573 |
> |
if (bright(sr.rcol) <= FTINY) { |
574 |
> |
#if SHADCACHE |
575 |
> |
srcblocker(&sr); /* add blocker to cache */ |
576 |
> |
#endif |
577 |
|
continue; |
578 |
+ |
} |
579 |
|
if (r->gecc <= FTINY) /* compute P(theta) */ |
580 |
|
d = 1.; |
581 |
|
else { |
613 |
|
*/ |
614 |
|
|
615 |
|
static int |
616 |
< |
weaksrcmat(int obj) /* identify material */ |
616 |
> |
weaksrcmat(OBJECT obj) /* identify material */ |
617 |
|
{ |
618 |
< |
register OBJREC *o = objptr(obj); |
618 |
> |
OBJREC *m = findmaterial(objptr(obj)); |
619 |
|
|
620 |
< |
while (!ismaterial(o->otype)) /* find material */ |
621 |
< |
o = objptr(o->omod); |
744 |
< |
return((o->otype==MAT_ILLUM)|(o->otype==MAT_GLOW)); |
620 |
> |
if (m == NULL) return(0); |
621 |
> |
return((m->otype==MAT_ILLUM) | (m->otype==MAT_GLOW)); |
622 |
|
} |
623 |
|
|
624 |
|
#define illumblock(m, r) (!(source[r->rsrc].sflags&SVIRTUAL) && \ |
679 |
|
distglow(m, r, raydist(r,PRIMARY))) |
680 |
|
|
681 |
|
|
682 |
< |
int |
682 |
> |
extern int |
683 |
|
m_light( /* ray hit a light source */ |
684 |
< |
register OBJREC *m, |
685 |
< |
register RAY *r |
684 |
> |
register OBJREC *m, |
685 |
> |
register RAY *r |
686 |
|
) |
687 |
|
{ |
688 |
|
/* check for over-counting */ |
689 |
< |
if (badcomponent(m, r)) |
689 |
> |
if (badcomponent(m, r)) { |
690 |
> |
setcolor(r->rcoef, 0.0, 0.0, 0.0); |
691 |
|
return(1); |
692 |
< |
if (wrongsource(m, r)) |
692 |
> |
} |
693 |
> |
if (wrongsource(m, r)) { |
694 |
> |
setcolor(r->rcoef, 0.0, 0.0, 0.0); |
695 |
|
return(1); |
696 |
+ |
} |
697 |
|
/* check for passed illum */ |
698 |
|
if (passillum(m, r)) { |
699 |
|
if (m->oargs.nsargs && strcmp(m->oargs.sarg[0], VOIDID)) |
701 |
|
raytrans(r); |
702 |
|
return(1); |
703 |
|
} |
704 |
+ |
/* check for invisibility */ |
705 |
+ |
if (srcignore(m, r)) { |
706 |
+ |
setcolor(r->rcoef, 0.0, 0.0, 0.0); |
707 |
+ |
return(1); |
708 |
+ |
} |
709 |
|
/* otherwise treat as source */ |
710 |
|
/* check for behind */ |
711 |
|
if (r->rod < 0.0) |
826 |
– |
return(1); |
827 |
– |
/* check for invisibility */ |
828 |
– |
if (srcignore(m, r)) |
712 |
|
return(1); |
713 |
|
/* check for outside spot */ |
714 |
|
if (m->otype==MAT_SPOT && spotout(r, makespot(m))) |