| 90 |
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*/ |
| 91 |
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|
| 92 |
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#include <string.h> |
| 93 |
+ |
#include <time.h> |
| 94 |
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|
| 95 |
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#include "ray.h" |
| 96 |
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#include "source.h" |
| 97 |
+ |
#include "bsdf.h" |
| 98 |
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#include "ambient.h" |
| 99 |
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#include "otypes.h" |
| 100 |
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#include "random.h" |
| 120 |
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|
| 121 |
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int do_irrad = 0; /* compute irradiance? */ |
| 122 |
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|
| 123 |
+ |
int rand_samp = 0; /* pure Monte Carlo sampling? */ |
| 124 |
+ |
|
| 125 |
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .03; /* shadow threshold */ |
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|
double shadcert = .75; /* shadow certainty */ |
| 141 |
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int backvis = 1; /* back face visibility */ |
| 142 |
|
|
| 143 |
|
int maxdepth = 8; /* maximum recursion depth */ |
| 144 |
< |
double minweight = 2e-3; /* minimum ray weight */ |
| 144 |
> |
double minweight = 5e-4; /* minimum ray weight */ |
| 145 |
|
|
| 146 |
|
char *ambfile = NULL; /* ambient file name */ |
| 147 |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
| 156 |
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|
| 157 |
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|
| 158 |
< |
extern void |
| 158 |
> |
void |
| 159 |
|
ray_init( /* initialize ray-tracing calculation */ |
| 160 |
|
char *otnm |
| 161 |
|
) |
| 166 |
|
if (ofun[OBJ_SPHERE].funp == o_default) |
| 167 |
|
initotypes(); |
| 168 |
|
/* initialize urand */ |
| 169 |
< |
initurand(2048); |
| 169 |
> |
if (rand_samp) { |
| 170 |
> |
srandom((long)time(0)); |
| 171 |
> |
initurand(0); |
| 172 |
> |
} else { |
| 173 |
> |
srandom(0L); |
| 174 |
> |
initurand(2048); |
| 175 |
> |
} |
| 176 |
|
/* read scene octree */ |
| 177 |
|
readoct(octname = otnm, ~(IO_FILES|IO_INFO), &thescene, NULL); |
| 178 |
|
nsceneobjs = nobjects; |
| 183 |
|
/* ready to go... */ |
| 184 |
|
} |
| 185 |
|
|
| 186 |
< |
extern void |
| 186 |
> |
void |
| 187 |
|
ray_trace( /* trace a primary ray */ |
| 188 |
|
RAY *r |
| 189 |
|
) |
| 190 |
|
{ |
| 191 |
< |
rayorigin(r, NULL, PRIMARY, 1.0); |
| 191 |
> |
rayorigin(r, PRIMARY, NULL, NULL); |
| 192 |
|
samplendx++; |
| 193 |
|
rayvalue(r); /* assumes origin and direction are set */ |
| 194 |
|
} |
| 195 |
|
|
| 196 |
|
|
| 197 |
< |
extern void |
| 197 |
> |
void |
| 198 |
|
ray_done( /* free ray-tracing data */ |
| 199 |
|
int freall |
| 200 |
|
) |
| 208 |
|
octdone(); |
| 209 |
|
thescene.cutree = EMPTY; |
| 210 |
|
octname = NULL; |
| 211 |
+ |
retainfonts = 0; |
| 212 |
|
if (freall) { |
| 202 |
– |
retainfonts = 0; |
| 213 |
|
freefont(NULL); |
| 214 |
|
freedata(NULL); |
| 215 |
+ |
SDfreeCache(NULL); |
| 216 |
|
initurand(0); |
| 217 |
|
} |
| 218 |
|
if (nobjects > 0) { |
| 219 |
|
sprintf(errmsg, "%ld objects left after call to ray_done()", |
| 220 |
< |
nobjects); |
| 220 |
> |
(long)nobjects); |
| 221 |
|
error(WARNING, errmsg); |
| 222 |
|
} |
| 223 |
|
} |
| 224 |
|
|
| 225 |
|
|
| 226 |
< |
extern void |
| 226 |
> |
void |
| 227 |
|
ray_save( /* save current parameter settings */ |
| 228 |
|
RAYPARAMS *rp |
| 229 |
|
) |
| 274 |
|
} |
| 275 |
|
|
| 276 |
|
|
| 277 |
< |
extern void |
| 277 |
> |
void |
| 278 |
|
ray_restore( /* restore parameter settings */ |
| 279 |
|
RAYPARAMS *rp |
| 280 |
|
) |
| 342 |
|
} |
| 343 |
|
|
| 344 |
|
|
| 345 |
< |
extern void |
| 345 |
> |
void |
| 346 |
|
ray_defaults( /* get default parameter values */ |
| 347 |
|
RAYPARAMS *rp |
| 348 |
|
) |
