14 |
|
#include "otypes.h" |
15 |
|
#include "otspecial.h" |
16 |
|
#include "random.h" |
17 |
+ |
#include "pmap.h" |
18 |
|
|
19 |
|
#define MAXCSET ((MAXSET+1)*2-1) /* maximum check set size */ |
20 |
|
|
36 |
|
static void checkset(OBJECT *os, OBJECT *cs); |
37 |
|
|
38 |
|
|
39 |
< |
extern int |
39 |
> |
int |
40 |
|
rayorigin( /* start new ray from old one */ |
41 |
|
RAY *r, |
42 |
|
int rt, |
51 |
|
setcolor(r->rcoef, 1., 1., 1.); |
52 |
|
} else { |
53 |
|
rw = intens(rc); |
54 |
+ |
if (rw > 1.0) |
55 |
+ |
rw = 1.0; /* avoid calculation growth */ |
56 |
|
if (rc != r->rcoef) |
57 |
|
copycolor(r->rcoef, rc); |
58 |
|
} |
109 |
|
return(-1); |
110 |
|
if (r->crtype & SHADOW) /* shadow commitment */ |
111 |
|
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 |
|
if (maxdepth <= 0 && rc != NULL) { /* Russian roulette */ |
120 |
|
if (minweight <= 0.0) |
121 |
|
error(USER, "zero ray weight in Russian roulette"); |
134 |
|
} |
135 |
|
|
136 |
|
|
137 |
< |
extern void |
137 |
> |
void |
138 |
|
rayclear( /* clear a ray for (re)evaluation */ |
139 |
|
RAY *r |
140 |
|
) |
153 |
|
} |
154 |
|
|
155 |
|
|
156 |
< |
extern void |
156 |
> |
void |
157 |
|
raytrace( /* trace a ray and compute its value */ |
158 |
|
RAY *r |
159 |
|
) |
173 |
|
} |
174 |
|
|
175 |
|
|
176 |
< |
extern void |
176 |
> |
void |
177 |
|
raycont( /* check for clipped object and continue */ |
178 |
|
RAY *r |
179 |
|
) |
184 |
|
} |
185 |
|
|
186 |
|
|
187 |
< |
extern void |
187 |
> |
void |
188 |
|
raytrans( /* transmit ray as is */ |
189 |
|
RAY *r |
190 |
|
) |
191 |
|
{ |
192 |
|
RAY tr; |
193 |
|
|
194 |
< |
if (rayorigin(&tr, TRANS, r, NULL) == 0) { |
195 |
< |
VCOPY(tr.rdir, r->rdir); |
196 |
< |
rayvalue(&tr); |
197 |
< |
copycolor(r->rcol, tr.rcol); |
198 |
< |
r->rt = r->rot + tr.rt; |
189 |
< |
} |
194 |
> |
rayorigin(&tr, TRANS, r, NULL); /* always continue */ |
195 |
> |
VCOPY(tr.rdir, r->rdir); |
196 |
> |
rayvalue(&tr); |
197 |
> |
copycolor(r->rcol, tr.rcol); |
198 |
> |
r->rt = r->rot + tr.rt; |
199 |
|
} |
200 |
|
|
201 |
|
|
202 |
< |
extern int |
202 |
> |
int |
203 |
|
rayshade( /* shade ray r with material mod */ |
204 |
|
RAY *r, |
205 |
|
int mod |
234 |
|
} |
235 |
|
|
236 |
|
|
237 |
< |
extern void |
237 |
> |
void |
238 |
|
rayparticipate( /* compute ray medium participation */ |
239 |
|
RAY *r |
240 |
|
) |
258 |
|
multcolor(r->rcol, ce); /* path extinction */ |
259 |
|
if (r->crtype & SHADOW || intens(r->albedo) <= FTINY) |
260 |
|
return; /* no scattering */ |
261 |
< |
setcolor(ca, |
262 |
< |
colval(r->albedo,RED)*colval(ambval,RED)*(1.-colval(ce,RED)), |
263 |
< |
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-colval(ce,GRN)), |
264 |
< |
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-colval(ce,BLU))); |
265 |
< |
addcolor(r->rcol, ca); /* ambient in scattering */ |
261 |
> |
|
262 |
> |
/* PMAP: indirect inscattering accounted for by volume photons? */ |
263 |
> |
if (!volumePhotonMapping) { |
264 |
> |
setcolor(ca, |
265 |
> |
colval(r->albedo,RED)*colval(ambval,RED)*(1.-colval(ce,RED)), |
266 |
> |
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-colval(ce,GRN)), |
267 |
> |
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-colval(ce,BLU))); |
268 |
> |
addcolor(r->rcol, ca); /* ambient in scattering */ |
269 |
> |
} |
270 |
> |
|
271 |
|
srcscatter(r); /* source in scattering */ |
272 |
|
} |
273 |
|
|
274 |
|
|
275 |
< |
extern void |
275 |
> |
void |
276 |
|
raytexture( /* get material modifiers */ |
277 |
|
RAY *r, |
278 |
|
OBJECT mod |
297 |
|
} |
298 |
|
|
299 |
|
|
300 |
< |
extern int |
300 |
> |
int |
301 |
|
raymixture( /* mix modifiers */ |
302 |
|
RAY *r, |
303 |
|
OBJECT fore, |
357 |
|
} |
358 |
|
|
359 |
|
|
360 |
< |
extern double |
360 |
> |
double |
361 |
|
raydist( /* compute (cumulative) ray distance */ |
362 |
|
const RAY *r, |
363 |
|
int flags |
373 |
|
} |
374 |
|
|
375 |
|
|
376 |
< |
extern void |
376 |
> |
void |
377 |
|
raycontrib( /* compute (cumulative) ray contribution */ |
378 |
|
RREAL rc[3], |
379 |
|
const RAY *r, |
399 |
|
} |
400 |
|
|
401 |
|
|
402 |
< |
extern double |
402 |
> |
double |
403 |
|
raynormal( /* compute perturbed normal for ray */ |
404 |
|
FVECT norm, |
405 |
|
RAY *r |
435 |
|
} |
436 |
|
|
437 |
|
|
438 |
< |
extern void |
438 |
> |
void |
439 |
|
newrayxf( /* get new tranformation matrix for ray */ |
440 |
|
RAY *r |
441 |
|
) |
473 |
|
} |
474 |
|
|
475 |
|
|
476 |
< |
extern void |
476 |
> |
void |
477 |
|
flipsurface( /* reverse surface orientation */ |
478 |
|
RAY *r |
479 |
|
) |
488 |
|
} |
489 |
|
|
490 |
|
|
491 |
< |
extern void |
491 |
> |
void |
492 |
|
rayhit( /* standard ray hit test */ |
493 |
|
OBJECT *oset, |
494 |
|
RAY *r |
505 |
|
} |
506 |
|
|
507 |
|
|
508 |
< |
extern int |
508 |
> |
int |
509 |
|
localhit( /* check for hit in the octree */ |
510 |
|
RAY *r, |
511 |
|
CUBE *scene |