14 |
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#include "otypes.h" |
15 |
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#include "otspecial.h" |
16 |
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#include "random.h" |
17 |
+ |
#include "pmap.h" |
18 |
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|
19 |
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#define MAXCSET ((MAXSET+1)*2-1) /* maximum check set size */ |
20 |
|
|
36 |
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static void checkset(OBJECT *os, OBJECT *cs); |
37 |
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|
38 |
|
|
39 |
< |
extern int |
39 |
> |
int |
40 |
|
rayorigin( /* start new ray from old one */ |
41 |
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RAY *r, |
42 |
|
int rt, |
51 |
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setcolor(r->rcoef, 1., 1., 1.); |
52 |
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} else { |
53 |
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rw = intens(rc); |
54 |
+ |
if (rw > 1.0) |
55 |
+ |
rw = 1.0; /* avoid calculation growth */ |
56 |
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if (rc != r->rcoef) |
57 |
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copycolor(r->rcoef, rc); |
58 |
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} |
109 |
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return(-1); |
110 |
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if (r->crtype & SHADOW) /* shadow commitment */ |
111 |
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return(0); |
112 |
+ |
/* ambient in photon map? */ |
113 |
+ |
if (ro != NULL && ro->crtype & AMBIENT) { |
114 |
+ |
if (causticPhotonMapping) |
115 |
+ |
return(-1); |
116 |
+ |
if (photonMapping && rt != TRANS) |
117 |
+ |
return(-1); |
118 |
+ |
} |
119 |
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if (maxdepth <= 0 && rc != NULL) { /* Russian roulette */ |
120 |
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if (minweight <= 0.0) |
121 |
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error(USER, "zero ray weight in Russian roulette"); |
134 |
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} |
135 |
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|
136 |
|
|
137 |
< |
extern void |
137 |
> |
void |
138 |
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rayclear( /* clear a ray for (re)evaluation */ |
139 |
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RAY *r |
140 |
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) |
145 |
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r->robj = OVOID; |
146 |
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r->ro = NULL; |
147 |
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r->rox = NULL; |
148 |
< |
r->rt = r->rot = FHUGE; |
148 |
> |
r->rxt = r->rmt = r->rot = FHUGE; |
149 |
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r->pert[0] = r->pert[1] = r->pert[2] = 0.0; |
150 |
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r->uv[0] = r->uv[1] = 0.0; |
151 |
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setcolor(r->pcol, 1.0, 1.0, 1.0); |
152 |
+ |
setcolor(r->mcol, 0.0, 0.0, 0.0); |
153 |
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setcolor(r->rcol, 0.0, 0.0, 0.0); |
154 |
|
} |
155 |
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|
156 |
|
|
157 |
< |
extern void |
157 |
> |
void |
158 |
|
raytrace( /* trace a ray and compute its value */ |
159 |
|
RAY *r |
160 |
|
) |
174 |
|
} |
175 |
|
|
176 |
|
|
177 |
< |
extern void |
177 |
> |
void |
178 |
|
raycont( /* check for clipped object and continue */ |
179 |
|
RAY *r |
180 |
|
) |
185 |
|
} |
186 |
|
|
187 |
|
|
188 |
< |
extern void |
188 |
> |
void |
189 |
|
raytrans( /* transmit ray as is */ |
190 |
|
RAY *r |
191 |
|
) |
192 |
|
{ |
193 |
|
RAY tr; |
194 |
|
|
195 |
< |
if (rayorigin(&tr, TRANS, r, NULL) == 0) { |
196 |
< |
VCOPY(tr.rdir, r->rdir); |
197 |
< |
rayvalue(&tr); |
198 |
< |
copycolor(r->rcol, tr.rcol); |
199 |
< |
r->rt = r->rot + tr.rt; |
200 |
< |
} |
195 |
> |
rayorigin(&tr, TRANS, r, NULL); /* always continue */ |
196 |
> |
VCOPY(tr.rdir, r->rdir); |
197 |
> |
rayvalue(&tr); |
198 |
> |
copycolor(r->rcol, tr.rcol); |
199 |
> |
r->rmt = r->rot + tr.rmt; |
200 |
> |
r->rxt = r->rot + tr.rxt; |
201 |
|
} |
202 |
|
|
203 |
|
|
204 |
< |
extern int |
204 |
> |
int |
205 |
|
rayshade( /* shade ray r with material mod */ |
206 |
|
RAY *r, |
207 |
|
int mod |
209 |
|
{ |
210 |
|
OBJREC *m; |
211 |
|
|
212 |
< |
r->rt = r->rot; /* set effective ray length */ |
212 |
> |
r->rxt = r->rmt = r->rot; /* preset effective ray length */ |
213 |
|
for ( ; mod != OVOID; mod = m->omod) { |
214 |
|
m = objptr(mod); |
215 |
|
/****** unnecessary test since modifier() is always called |
220 |
|
******/ |
221 |
|
/* hack for irradiance calculation */ |
222 |
|
if (do_irrad && !(r->crtype & ~(PRIMARY|TRANS)) && |
223 |
< |
m->otype != MAT_CLIP && |
224 |
< |
(ofun[m->otype].flags & (T_M|T_X))) { |
225 |
< |
if (irr_ignore(m->otype)) { |
223 |
> |
(ofun[m->otype].flags & (T_M|T_X)) && |
224 |
> |
m->otype != MAT_CLIP) { |
225 |
> |
if (istransp(m->otype) || isBSDFproxy(m)) { |
226 |
|
raytrans(r); |
227 |
|
return(1); |
228 |
|
} |
236 |
|
} |
237 |
|
|
238 |
|
|
239 |
< |
extern void |
239 |
> |
void |
240 |
|
rayparticipate( /* compute ray medium participation */ |
241 |
|
RAY *r |
242 |
|
) |
260 |
|
multcolor(r->rcol, ce); /* path extinction */ |
261 |
|
if (r->crtype & SHADOW || intens(r->albedo) <= FTINY) |
262 |
|
return; /* no scattering */ |
263 |
< |
setcolor(ca, |
264 |
< |
colval(r->albedo,RED)*colval(ambval,RED)*(1.-colval(ce,RED)), |
265 |
< |
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-colval(ce,GRN)), |
266 |
< |
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-colval(ce,BLU))); |
267 |
< |
addcolor(r->rcol, ca); /* ambient in scattering */ |
263 |
> |
|
264 |
> |
/* PMAP: indirect inscattering accounted for by volume photons? */ |
265 |
> |
if (!volumePhotonMapping) { |
266 |
> |
setcolor(ca, |
267 |
> |
colval(r->albedo,RED)*colval(ambval,RED)*(1.-colval(ce,RED)), |
268 |
> |
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-colval(ce,GRN)), |
269 |
> |
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-colval(ce,BLU))); |
270 |
> |
addcolor(r->rcol, ca); /* ambient in scattering */ |
271 |
> |
} |
272 |
> |
|
273 |
|
srcscatter(r); /* source in scattering */ |
274 |
|
} |
275 |
|
|
276 |
|
|
277 |
< |
extern void |
277 |
> |
void |
278 |
|
raytexture( /* get material modifiers */ |
279 |
|
RAY *r, |
280 |
|
OBJECT mod |
299 |
|
} |
300 |
|
|
301 |
|
|
302 |
< |
extern int |
302 |
> |
int |
303 |
|
raymixture( /* mix modifiers */ |
304 |
|
RAY *r, |
305 |
|
OBJECT fore, |
308 |
|
) |
309 |
|
{ |
310 |
|
RAY fr, br; |
311 |
+ |
double mfore, mback; |
312 |
|
int foremat, backmat; |
313 |
|
int i; |
314 |
|
/* bound coefficient */ |
355 |
|
scalecolor(br.rcol, 1.0-coef); |
356 |
|
copycolor(r->rcol, fr.rcol); |
357 |
|
addcolor(r->rcol, br.rcol); |
358 |
< |
r->rt = bright(fr.rcol) > bright(br.rcol) ? fr.rt : br.rt; |
358 |
> |
mfore = bright(fr.mcol); mback = bright(br.mcol); |
359 |
> |
r->rmt = mfore > mback ? fr.rmt : br.rmt; |
360 |
> |
r->rxt = bright(fr.rcol)-mfore > bright(br.rcol)-mback ? |
361 |
> |
fr.rxt : br.rxt; |
362 |
|
return(1); |
363 |
|
} |
364 |
|
|
365 |
|
|
366 |
< |
extern double |
366 |
> |
double |
367 |
|
raydist( /* compute (cumulative) ray distance */ |
368 |
|
const RAY *r, |
369 |
|
int flags |
379 |
|
} |
380 |
|
|
381 |
|
|
382 |
< |
extern void |
382 |
> |
void |
383 |
|
raycontrib( /* compute (cumulative) ray contribution */ |
384 |
|
RREAL rc[3], |
385 |
|
const RAY *r, |
405 |
|
} |
406 |
|
|
407 |
|
|
408 |
< |
extern double |
408 |
> |
double |
409 |
|
raynormal( /* compute perturbed normal for ray */ |
410 |
|
FVECT norm, |
411 |
|
RAY *r |
441 |
|
} |
442 |
|
|
443 |
|
|
444 |
< |
extern void |
444 |
> |
void |
445 |
|
newrayxf( /* get new tranformation matrix for ray */ |
446 |
|
RAY *r |
447 |
|
) |
479 |
|
} |
480 |
|
|
481 |
|
|
482 |
< |
extern void |
482 |
> |
void |
483 |
|
flipsurface( /* reverse surface orientation */ |
484 |
|
RAY *r |
485 |
|
) |
494 |
|
} |
495 |
|
|
496 |
|
|
497 |
< |
extern void |
497 |
> |
void |
498 |
|
rayhit( /* standard ray hit test */ |
499 |
|
OBJECT *oset, |
500 |
|
RAY *r |
511 |
|
} |
512 |
|
|
513 |
|
|
514 |
< |
extern int |
514 |
> |
int |
515 |
|
localhit( /* check for hit in the octree */ |
516 |
|
RAY *r, |
517 |
|
CUBE *scene |