23 |
|
* sort of context, so it is impossible to simultaneously run |
24 |
|
* this library on multiple scenes or in multiple threads. |
25 |
|
* You get one scene and one thread, and if you want more, you |
26 |
< |
* will have to go with the process model used by the programs |
27 |
< |
* gen/mkillum, hd/rholo, and px/pinterp. Finally, unrecoverable |
28 |
< |
* errors result in a call to the application-defined function |
29 |
< |
* quit(). The usual thing to do is to call exit(). |
26 |
> |
* will have to go with the process model defined in raypcalls.c. |
27 |
> |
* Finally, unrecoverable errors result in a call to the application- |
28 |
> |
* defined function quit(). The usual thing to do is to call exit(). |
29 |
|
* You might want to do something else instead, like |
30 |
|
* call setjmp()/longjmp() to bring you back to the calling |
31 |
|
* function for recovery. You may also wish to define your own |
90 |
|
*/ |
91 |
|
|
92 |
|
#include <string.h> |
93 |
+ |
#include <time.h> |
94 |
|
|
95 |
|
#include "ray.h" |
96 |
|
#include "source.h" |
97 |
+ |
#include "bsdf.h" |
98 |
|
#include "ambient.h" |
99 |
|
#include "otypes.h" |
100 |
|
#include "random.h" |
101 |
|
#include "data.h" |
102 |
|
#include "font.h" |
103 |
+ |
#include "pmapray.h" |
104 |
|
|
105 |
|
char *progname = "unknown_app"; /* caller sets to argv[0] */ |
106 |
|
|
117 |
|
|
118 |
|
void (*trace)() = NULL; /* trace call */ |
119 |
|
|
118 |
– |
extern void ambnotify(); |
120 |
|
void (*addobjnotify[8])() = {ambnotify, NULL}; |
121 |
|
|
122 |
|
int do_irrad = 0; /* compute irradiance? */ |
123 |
|
|
124 |
+ |
int rand_samp = 1; /* pure Monte Carlo sampling? */ |
125 |
+ |
|
126 |
|
double dstrsrc = 0.0; /* square source distribution */ |
127 |
|
double shadthresh = .03; /* shadow threshold */ |
128 |
|
double shadcert = .75; /* shadow certainty */ |
141 |
|
|
142 |
|
int backvis = 1; /* back face visibility */ |
143 |
|
|
144 |
< |
int maxdepth = 8; /* maximum recursion depth */ |
144 |
> |
int maxdepth = -10; /* maximum recursion depth */ |
145 |
|
double minweight = 2e-3; /* minimum ray weight */ |
146 |
|
|
147 |
|
char *ambfile = NULL; /* ambient file name */ |
156 |
|
int ambincl = -1; /* include == 1, exclude == 0 */ |
157 |
|
|
158 |
|
|
159 |
+ |
static void |
160 |
+ |
reset_random(void) /* re-initialize random number generator */ |
161 |
+ |
{ |
162 |
+ |
if (rand_samp) { |
163 |
+ |
srandom((long)time(0)); |
164 |
+ |
initurand(0); |
165 |
+ |
} else { |
166 |
+ |
srandom(0L); |
167 |
+ |
initurand(2048); |
168 |
+ |
} |
169 |
+ |
} |
170 |
+ |
|
171 |
+ |
|
172 |
|
void |
173 |
< |
ray_init(otnm) /* initialize ray-tracing calculation */ |
174 |
< |
char *otnm; |
173 |
> |
ray_init( /* initialize ray-tracing calculation */ |
174 |
> |
char *otnm |
175 |
> |
) |
176 |
|
{ |
177 |
|
if (nobjects > 0) /* free old scene data */ |
178 |
|
ray_done(0); |
180 |
|
if (ofun[OBJ_SPHERE].funp == o_default) |
181 |
|
initotypes(); |
182 |
|
/* initialize urand */ |
183 |
< |
initurand(2048); |
183 |
> |
reset_random(); |
184 |
|
/* read scene octree */ |
185 |
|
readoct(octname = otnm, ~(IO_FILES|IO_INFO), &thescene, NULL); |
186 |
|
nsceneobjs = nobjects; |
187 |
+ |
/* PMAP: Init & load photon maps */ |
188 |
+ |
ray_init_pmap(); |
189 |
|
/* find and mark sources */ |
190 |
|
marksources(); |
191 |
|
/* initialize ambient calculation */ |
192 |
|
setambient(); |
193 |
< |
/* ready to go... */ |
193 |
> |
/* ready to go... (almost) */ |
194 |
|
} |
195 |
|
|
196 |
+ |
|
197 |
|
void |
198 |
< |
ray_trace(r) /* trace a primary ray */ |
199 |
< |
RAY *r; |
198 |
> |
ray_trace( /* trace a primary ray */ |
199 |
> |
RAY *r |
200 |
> |
) |
201 |
|
{ |
202 |
< |
rayorigin(r, NULL, PRIMARY, 1.0); |
202 |
> |
rayorigin(r, PRIMARY, NULL, NULL); |
203 |
|
samplendx++; |
204 |
|
rayvalue(r); /* assumes origin and direction are set */ |
205 |
|
} |
206 |
|
|
207 |
|
|
208 |
|
void |
209 |
< |
ray_done(freall) /* free ray-tracing data */ |
210 |
< |
int freall; |
209 |
> |
ray_done( /* free ray-tracing data */ |
210 |
> |
int freall |
211 |
> |
) |
212 |
|
{ |
213 |
|
retainfonts = 1; |
214 |
|
ambdone(); |
219 |
|
octdone(); |
220 |
|
thescene.cutree = EMPTY; |
221 |
|
octname = NULL; |
222 |
+ |
retainfonts = 0; |
223 |
|
if (freall) { |
201 |
– |
retainfonts = 0; |
224 |
|
freefont(NULL); |
225 |
|
freedata(NULL); |
226 |
+ |
SDfreeCache(NULL); |
227 |
|
initurand(0); |
228 |
|
} |
229 |
|
if (nobjects > 0) { |
230 |
< |
sprintf(errmsg, "%d objects left after call to ray_done()", |
231 |
< |
nobjects); |
230 |
> |
sprintf(errmsg, "%ld objects left after call to ray_done()", |
231 |
> |
(long)nobjects); |
232 |
|
error(WARNING, errmsg); |
233 |
|
} |
234 |
+ |
|
235 |
+ |
ray_done_pmap(); |
236 |
|
} |
237 |
|
|
238 |
|
|
239 |
|
void |
240 |
< |
ray_save(rp) /* save current parameter settings */ |
241 |
< |
RAYPARAMS *rp; |
240 |
> |
ray_save( /* save current parameter settings */ |
241 |
> |
RAYPARAMS *rp |
242 |
> |
) |
243 |
|
{ |
244 |
|
int i, ndx; |
245 |
|
|
246 |
|
if (rp == NULL) |
247 |
|
return; |
248 |
|
rp->do_irrad = do_irrad; |
249 |
+ |
rp->rand_samp = rand_samp; |
250 |
|
rp->dstrsrc = dstrsrc; |
251 |
|
rp->shadthresh = shadthresh; |
252 |
|
rp->shadcert = shadcert; |
263 |
|
rp->backvis = backvis; |
264 |
|
rp->maxdepth = maxdepth; |
265 |
|
rp->minweight = minweight; |
239 |
– |
copycolor(rp->ambval, ambval); |
240 |
– |
memset(rp->ambfile, '\0', sizeof(rp->ambfile)); |
266 |
|
if (ambfile != NULL) |
267 |
|
strncpy(rp->ambfile, ambfile, sizeof(rp->ambfile)-1); |
268 |
+ |
else |
269 |
+ |
memset(rp->ambfile, '\0', sizeof(rp->ambfile)); |
270 |
+ |
copycolor(rp->ambval, ambval); |
271 |
|
rp->ambvwt = ambvwt; |
272 |
|
rp->ambacc = ambacc; |
273 |
|
rp->ambres = ambres; |
282 |
|
if (ndx+len >= sizeof(rp->amblval)) |
283 |
|
break; |
284 |
|
strcpy(rp->amblval+ndx, amblist[i]); |
285 |
+ |
rp->amblndx[i] = ndx; |
286 |
|
ndx += len+1; |
287 |
|
} |
288 |
|
while (i <= AMBLLEN) |
289 |
|
rp->amblndx[i++] = -1; |
290 |
+ |
|
291 |
+ |
/* PMAP: save photon mapping params */ |
292 |
+ |
ray_save_pmap(rp); |
293 |
|
} |
294 |
|
|
295 |
|
|
296 |
|
void |
297 |
< |
ray_restore(rp) /* restore parameter settings */ |
298 |
< |
RAYPARAMS *rp; |
297 |
> |
ray_restore( /* restore parameter settings */ |
298 |
> |
RAYPARAMS *rp |
299 |
> |
) |
300 |
|
{ |
301 |
< |
register int i; |
301 |
> |
int i; |
302 |
|
|
303 |
|
if (rp == NULL) { /* restore defaults */ |
304 |
|
RAYPARAMS dflt; |
308 |
|
} |
309 |
|
/* restore saved settings */ |
310 |
|
do_irrad = rp->do_irrad; |
311 |
+ |
if (!rand_samp != !rp->rand_samp) { |
312 |
+ |
rand_samp = rp->rand_samp; |
313 |
+ |
reset_random(); |
314 |
+ |
} |
315 |
|
dstrsrc = rp->dstrsrc; |
316 |
|
shadthresh = rp->shadthresh; |
317 |
|
shadcert = rp->shadcert; |
333 |
|
ambdiv = rp->ambdiv; |
334 |
|
ambssamp = rp->ambssamp; |
335 |
|
ambounce = rp->ambounce; |
336 |
+ |
/* a bit dangerous if not static */ |
337 |
|
for (i = 0; rp->amblndx[i] >= 0; i++) |
338 |
|
amblist[i] = rp->amblval + rp->amblndx[i]; |
339 |
|
while (i <= AMBLLEN) |
363 |
|
ambres = rp->ambres; |
364 |
|
ambacc = rp->ambacc; |
365 |
|
} |
366 |
+ |
|
367 |
+ |
/* PMAP: restore photon mapping params */ |
368 |
+ |
ray_restore_pmap(rp); |
369 |
|
} |
370 |
|
|
371 |
|
|
372 |
|
void |
373 |
< |
ray_defaults(rp) /* get default parameter values */ |
374 |
< |
RAYPARAMS *rp; |
373 |
> |
ray_defaults( /* get default parameter values */ |
374 |
> |
RAYPARAMS *rp |
375 |
> |
) |
376 |
|
{ |
377 |
|
int i; |
378 |
|
|
380 |
|
return; |
381 |
|
|
382 |
|
rp->do_irrad = 0; |
383 |
+ |
rp->rand_samp = 1; |
384 |
|
rp->dstrsrc = 0.0; |
385 |
|
rp->shadthresh = .03; |
386 |
|
rp->shadcert = .75; |
395 |
|
rp->specthresh = .15; |
396 |
|
rp->specjitter = 1.; |
397 |
|
rp->backvis = 1; |
398 |
< |
rp->maxdepth = 8; |
398 |
> |
rp->maxdepth = -10; |
399 |
|
rp->minweight = 2e-3; |
357 |
– |
setcolor(rp->ambval, 0., 0., 0.); |
400 |
|
memset(rp->ambfile, '\0', sizeof(rp->ambfile)); |
401 |
+ |
setcolor(rp->ambval, 0., 0., 0.); |
402 |
|
rp->ambvwt = 0; |
403 |
|
rp->ambres = 256; |
404 |
< |
rp->ambacc = 0.1; |
404 |
> |
rp->ambacc = 0.15; |
405 |
|
rp->ambdiv = 1024; |
406 |
|
rp->ambssamp = 512; |
407 |
|
rp->ambounce = 0; |
409 |
|
memset(rp->amblval, '\0', sizeof(rp->amblval)); |
410 |
|
for (i = AMBLLEN+1; i--; ) |
411 |
|
rp->amblndx[i] = -1; |
412 |
+ |
|
413 |
+ |
/* PMAP: restore photon mapping defaults */ |
414 |
+ |
ray_defaults_pmap(rp); |
415 |
|
} |