| 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" |
| 115 |
|
|
| 116 |
|
void (*trace)() = NULL; /* trace call */ |
| 117 |
|
|
| 118 |
< |
extern void ambnotify(); |
| 119 |
< |
void (*addobjnotify[])() = {ambnotify, NULL}; |
| 118 |
> |
void (*addobjnotify[8])() = {ambnotify, NULL}; |
| 119 |
|
|
| 120 |
|
int do_irrad = 0; /* compute irradiance? */ |
| 121 |
|
|
| 122 |
+ |
int rand_samp = 0; /* pure Monte Carlo sampling? */ |
| 123 |
+ |
|
| 124 |
|
double dstrsrc = 0.0; /* square source distribution */ |
| 125 |
< |
double shadthresh = .05; /* shadow threshold */ |
| 126 |
< |
double shadcert = .5; /* shadow certainty */ |
| 125 |
> |
double shadthresh = .03; /* shadow threshold */ |
| 126 |
> |
double shadcert = .75; /* shadow certainty */ |
| 127 |
|
int directrelay = 2; /* number of source relays */ |
| 128 |
|
int vspretest = 512; /* virtual source pretest density */ |
| 129 |
|
int directvis = 1; /* sources visible? */ |
| 139 |
|
|
| 140 |
|
int backvis = 1; /* back face visibility */ |
| 141 |
|
|
| 142 |
< |
int maxdepth = 6; /* maximum recursion depth */ |
| 143 |
< |
double minweight = 4e-3; /* minimum ray weight */ |
| 142 |
> |
int maxdepth = 8; /* maximum recursion depth */ |
| 143 |
> |
double minweight = 2e-3; /* minimum ray weight */ |
| 144 |
|
|
| 145 |
|
char *ambfile = NULL; /* ambient file name */ |
| 146 |
|
COLOR ambval = BLKCOLOR; /* ambient value */ |
| 147 |
|
int ambvwt = 0; /* initial weight for ambient value */ |
| 148 |
< |
double ambacc = 0.2; /* ambient accuracy */ |
| 149 |
< |
int ambres = 128; /* ambient resolution */ |
| 150 |
< |
int ambdiv = 512; /* ambient divisions */ |
| 151 |
< |
int ambssamp = 0; /* ambient super-samples */ |
| 148 |
> |
double ambacc = 0.1; /* ambient accuracy */ |
| 149 |
> |
int ambres = 256; /* ambient resolution */ |
| 150 |
> |
int ambdiv = 1024; /* ambient divisions */ |
| 151 |
> |
int ambssamp = 512; /* ambient super-samples */ |
| 152 |
|
int ambounce = 0; /* ambient bounces */ |
| 153 |
|
char *amblist[AMBLLEN+1]; /* ambient include/exclude list */ |
| 154 |
|
int ambincl = -1; /* include == 1, exclude == 0 */ |
| 155 |
|
|
| 156 |
|
|
| 157 |
|
void |
| 158 |
< |
ray_init(otnm) /* initialize ray-tracing calculation */ |
| 159 |
< |
char *otnm; |
| 158 |
> |
ray_init( /* initialize ray-tracing calculation */ |
| 159 |
> |
char *otnm |
| 160 |
> |
) |
| 161 |
|
{ |
| 162 |
|
if (nobjects > 0) /* free old scene data */ |
| 163 |
|
ray_done(0); |
| 165 |
|
if (ofun[OBJ_SPHERE].funp == o_default) |
| 166 |
|
initotypes(); |
| 167 |
|
/* initialize urand */ |
| 168 |
< |
if (urperm == NULL) |
| 168 |
> |
if (rand_samp) { |
| 169 |
> |
srandom((long)time(0)); |
| 170 |
> |
initurand(0); |
| 171 |
> |
} else { |
| 172 |
> |
srandom(0L); |
| 173 |
|
initurand(2048); |
| 174 |
+ |
} |
| 175 |
|
/* read scene octree */ |
| 176 |
|
readoct(octname = otnm, ~(IO_FILES|IO_INFO), &thescene, NULL); |
| 177 |
|
nsceneobjs = nobjects; |
| 183 |
|
} |
| 184 |
|
|
| 185 |
|
void |
| 186 |
< |
ray_trace(r) /* trace a primary ray */ |
| 187 |
< |
RAY *r; |
| 186 |
> |
ray_trace( /* trace a primary ray */ |
| 187 |
> |
RAY *r |
| 188 |
> |
) |
| 189 |
|
{ |
| 190 |
< |
rayorigin(r, NULL, PRIMARY, 1.0); |
| 190 |
> |
rayorigin(r, PRIMARY, NULL, NULL); |
| 191 |
|
samplendx++; |
| 192 |
|
rayvalue(r); /* assumes origin and direction are set */ |
| 193 |
|
} |
| 194 |
|
|
| 195 |
|
|
| 196 |
|
void |
| 197 |
< |
ray_done(freall) /* free ray-tracing data */ |
| 198 |
< |
int freall; |
| 197 |
> |
ray_done( /* free ray-tracing data */ |
| 198 |
> |
int freall |
| 199 |
> |
) |
| 200 |
|
{ |
| 201 |
|
retainfonts = 1; |
| 202 |
|
ambdone(); |
| 214 |
|
initurand(0); |
| 215 |
|
} |
| 216 |
|
if (nobjects > 0) { |
| 217 |
< |
sprintf(errmsg, "%d objects left after call to ray_done()", |
| 217 |
> |
sprintf(errmsg, "%ld objects left after call to ray_done()", |
| 218 |
|
nobjects); |
| 219 |
|
error(WARNING, errmsg); |
| 220 |
|
} |
| 222 |
|
|
| 223 |
|
|
| 224 |
|
void |
| 225 |
< |
ray_save(rp) /* save current parameter settings */ |
| 226 |
< |
RAYPARAMS *rp; |
| 225 |
> |
ray_save( /* save current parameter settings */ |
| 226 |
> |
RAYPARAMS *rp |
| 227 |
> |
) |
| 228 |
|
{ |
| 229 |
|
int i, ndx; |
| 230 |
|
|
| 273 |
|
|
| 274 |
|
|
| 275 |
|
void |
| 276 |
< |
ray_restore(rp) /* restore parameter settings */ |
| 277 |
< |
RAYPARAMS *rp; |
| 276 |
> |
ray_restore( /* restore parameter settings */ |
| 277 |
> |
RAYPARAMS *rp |
| 278 |
> |
) |
| 279 |
|
{ |
| 280 |
|
register int i; |
| 281 |
|
|
| 341 |
|
|
| 342 |
|
|
| 343 |
|
void |
| 344 |
< |
ray_defaults(rp) /* get default parameter values */ |
| 345 |
< |
RAYPARAMS *rp; |
| 344 |
> |
ray_defaults( /* get default parameter values */ |
| 345 |
> |
RAYPARAMS *rp |
| 346 |
> |
) |
| 347 |
|
{ |
| 348 |
|
int i; |
| 349 |
|
|
| 352 |
|
|
| 353 |
|
rp->do_irrad = 0; |
| 354 |
|
rp->dstrsrc = 0.0; |
| 355 |
< |
rp->shadthresh = .05; |
| 356 |
< |
rp->shadcert = .5; |
| 355 |
> |
rp->shadthresh = .03; |
| 356 |
> |
rp->shadcert = .75; |
| 357 |
|
rp->directrelay = 2; |
| 358 |
|
rp->vspretest = 512; |
| 359 |
|
rp->directvis = 1; |
| 365 |
|
rp->specthresh = .15; |
| 366 |
|
rp->specjitter = 1.; |
| 367 |
|
rp->backvis = 1; |
| 368 |
< |
rp->maxdepth = 6; |
| 369 |
< |
rp->minweight = 4e-3; |
| 368 |
> |
rp->maxdepth = 8; |
| 369 |
> |
rp->minweight = 2e-3; |
| 370 |
|
setcolor(rp->ambval, 0., 0., 0.); |
| 371 |
|
memset(rp->ambfile, '\0', sizeof(rp->ambfile)); |
| 372 |
|
rp->ambvwt = 0; |
| 373 |
< |
rp->ambres = 128; |
| 374 |
< |
rp->ambacc = 0.2; |
| 375 |
< |
rp->ambdiv = 512; |
| 376 |
< |
rp->ambssamp = 0; |
| 373 |
> |
rp->ambres = 256; |
| 374 |
> |
rp->ambacc = 0.15; |
| 375 |
> |
rp->ambdiv = 1024; |
| 376 |
> |
rp->ambssamp = 512; |
| 377 |
|
rp->ambounce = 0; |
| 378 |
|
rp->ambincl = -1; |
| 379 |
|
memset(rp->amblval, '\0', sizeof(rp->amblval)); |
