| 154 |
|
int ambincl = -1; /* include == 1, exclude == 0 */ |
| 155 |
|
|
| 156 |
|
|
| 157 |
< |
extern void |
| 157 |
> |
void |
| 158 |
|
ray_init( /* initialize ray-tracing calculation */ |
| 159 |
|
char *otnm |
| 160 |
|
) |
| 165 |
|
if (ofun[OBJ_SPHERE].funp == o_default) |
| 166 |
|
initotypes(); |
| 167 |
|
/* initialize urand */ |
| 168 |
< |
srandom(rand_samp ? (long)time(0) : 0L); |
| 169 |
< |
initurand(2048); |
| 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; |
| 182 |
|
/* ready to go... */ |
| 183 |
|
} |
| 184 |
|
|
| 185 |
< |
extern void |
| 185 |
> |
void |
| 186 |
|
ray_trace( /* trace a primary ray */ |
| 187 |
|
RAY *r |
| 188 |
|
) |
| 189 |
|
{ |
| 190 |
|
rayorigin(r, PRIMARY, NULL, NULL); |
| 191 |
< |
samplendx = rand_samp ? random() : samplendx+1; |
| 191 |
> |
samplendx++; |
| 192 |
|
rayvalue(r); /* assumes origin and direction are set */ |
| 193 |
|
} |
| 194 |
|
|
| 195 |
|
|
| 196 |
< |
extern void |
| 196 |
> |
void |
| 197 |
|
ray_done( /* free ray-tracing data */ |
| 198 |
|
int freall |
| 199 |
|
) |
| 221 |
|
} |
| 222 |
|
|
| 223 |
|
|
| 224 |
< |
extern void |
| 224 |
> |
void |
| 225 |
|
ray_save( /* save current parameter settings */ |
| 226 |
|
RAYPARAMS *rp |
| 227 |
|
) |
| 272 |
|
} |
| 273 |
|
|
| 274 |
|
|
| 275 |
< |
extern void |
| 275 |
> |
void |
| 276 |
|
ray_restore( /* restore parameter settings */ |
| 277 |
|
RAYPARAMS *rp |
| 278 |
|
) |
| 340 |
|
} |
| 341 |
|
|
| 342 |
|
|
| 343 |
< |
extern void |
| 343 |
> |
void |
| 344 |
|
ray_defaults( /* get default parameter values */ |
| 345 |
|
RAYPARAMS *rp |
| 346 |
|
) |
