| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rtrace.c,v 2.78 2019/05/04 23:10:32 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* rtrace.c - program and variables for individual ray tracing. |
| 6 |
*/ |
| 7 |
|
| 8 |
#include "copyright.h" |
| 9 |
|
| 10 |
/* |
| 11 |
* Input is in the form: |
| 12 |
* |
| 13 |
* xorg yorg zorg xdir ydir zdir |
| 14 |
* |
| 15 |
* The direction need not be normalized. Output is flexible. |
| 16 |
* If the direction vector is (0,0,0), then the output is flushed. |
| 17 |
* All values default to ascii representation of real |
| 18 |
* numbers. Binary representations can be selected |
| 19 |
* with '-ff' for float or '-fd' for double. By default, |
| 20 |
* radiance is computed. The '-i' or '-I' options indicate that |
| 21 |
* irradiance values are desired. |
| 22 |
*/ |
| 23 |
|
| 24 |
#include <time.h> |
| 25 |
|
| 26 |
#include "platform.h" |
| 27 |
#include "ray.h" |
| 28 |
#include "ambient.h" |
| 29 |
#include "source.h" |
| 30 |
#include "otypes.h" |
| 31 |
#include "otspecial.h" |
| 32 |
#include "resolu.h" |
| 33 |
#include "random.h" |
| 34 |
|
| 35 |
extern int inform; /* input format */ |
| 36 |
extern int outform; /* output format */ |
| 37 |
extern char *outvals; /* output values */ |
| 38 |
|
| 39 |
extern int imm_irrad; /* compute immediate irradiance? */ |
| 40 |
extern int lim_dist; /* limit distance? */ |
| 41 |
|
| 42 |
extern char *tralist[]; /* list of modifers to trace (or no) */ |
| 43 |
extern int traincl; /* include == 1, exclude == 0 */ |
| 44 |
|
| 45 |
extern int hresolu; /* horizontal resolution */ |
| 46 |
extern int vresolu; /* vertical resolution */ |
| 47 |
|
| 48 |
static int castonly = 0; |
| 49 |
|
| 50 |
#ifndef MAXTSET |
| 51 |
#define MAXTSET 8191 /* maximum number in trace set */ |
| 52 |
#endif |
| 53 |
OBJECT traset[MAXTSET+1]={0}; /* trace include/exclude set */ |
| 54 |
|
| 55 |
static RAY thisray; /* for our convenience */ |
| 56 |
|
| 57 |
typedef void putf_t(RREAL *v, int n); |
| 58 |
static putf_t puta, putd, putf; |
| 59 |
|
| 60 |
typedef void oputf_t(RAY *r); |
| 61 |
static oputf_t oputo, oputd, oputv, oputV, oputl, oputL, oputc, oputp, |
| 62 |
oputr, oputR, oputx, oputX, oputn, oputN, oputs, |
| 63 |
oputw, oputW, oputm, oputM, oputtilde; |
| 64 |
|
| 65 |
static void setoutput(char *vs); |
| 66 |
extern void tranotify(OBJECT obj); |
| 67 |
static void bogusray(void); |
| 68 |
static void raycast(RAY *r); |
| 69 |
static void rayirrad(RAY *r); |
| 70 |
static void rtcompute(FVECT org, FVECT dir, double dmax); |
| 71 |
static int printvals(RAY *r); |
| 72 |
static int getvec(FVECT vec, int fmt, FILE *fp); |
| 73 |
static void tabin(RAY *r); |
| 74 |
static void ourtrace(RAY *r); |
| 75 |
|
| 76 |
static oputf_t *ray_out[32], *every_out[32]; |
| 77 |
static putf_t *putreal; |
| 78 |
|
| 79 |
|
| 80 |
void |
| 81 |
quit( /* quit program */ |
| 82 |
int code |
| 83 |
) |
| 84 |
{ |
| 85 |
if (ray_pnprocs > 0) /* close children if any */ |
| 86 |
ray_pclose(0); |
| 87 |
#ifndef NON_POSIX |
| 88 |
else if (!ray_pnprocs) { |
| 89 |
headclean(); /* delete header file */ |
| 90 |
pfclean(); /* clean up persist files */ |
| 91 |
} |
| 92 |
#endif |
| 93 |
exit(code); |
| 94 |
} |
| 95 |
|
| 96 |
|
| 97 |
char * |
| 98 |
formstr( /* return format identifier */ |
| 99 |
int f |
| 100 |
) |
| 101 |
{ |
| 102 |
switch (f) { |
| 103 |
case 'a': return("ascii"); |
| 104 |
case 'f': return("float"); |
| 105 |
case 'd': return("double"); |
| 106 |
case 'c': return(COLRFMT); |
| 107 |
} |
| 108 |
return("unknown"); |
| 109 |
} |
| 110 |
|
| 111 |
|
| 112 |
extern void |
| 113 |
rtrace( /* trace rays from file */ |
| 114 |
char *fname, |
| 115 |
int nproc |
| 116 |
) |
| 117 |
{ |
| 118 |
unsigned long vcount = (hresolu > 1) ? (unsigned long)hresolu*vresolu |
| 119 |
: (unsigned long)vresolu; |
| 120 |
long nextflush = (vresolu > 0) & (hresolu > 1) ? 0 : hresolu; |
| 121 |
int something2flush = 0; |
| 122 |
FILE *fp; |
| 123 |
double d; |
| 124 |
FVECT orig, direc; |
| 125 |
/* set up input */ |
| 126 |
if (fname == NULL) |
| 127 |
fp = stdin; |
| 128 |
else if ((fp = fopen(fname, "r")) == NULL) { |
| 129 |
sprintf(errmsg, "cannot open input file \"%s\"", fname); |
| 130 |
error(SYSTEM, errmsg); |
| 131 |
} |
| 132 |
if (inform != 'a') |
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SET_FILE_BINARY(fp); |
| 134 |
/* set up output */ |
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setoutput(outvals); |
| 136 |
if (imm_irrad) |
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castonly = 0; |
| 138 |
else if (castonly) |
| 139 |
nproc = 1; /* don't bother multiprocessing */ |
| 140 |
if ((nextflush > 0) & (nproc > nextflush)) { |
| 141 |
error(WARNING, "reducing number of processes to match flush interval"); |
| 142 |
nproc = nextflush; |
| 143 |
} |
| 144 |
switch (outform) { |
| 145 |
case 'a': putreal = puta; break; |
| 146 |
case 'f': putreal = putf; break; |
| 147 |
case 'd': putreal = putd; break; |
| 148 |
case 'c': |
| 149 |
if (strcmp(outvals, "v")) |
| 150 |
error(USER, "color format with value output only"); |
| 151 |
break; |
| 152 |
default: |
| 153 |
error(CONSISTENCY, "botched output format"); |
| 154 |
} |
| 155 |
if (nproc > 1) { /* start multiprocessing */ |
| 156 |
ray_popen(nproc); |
| 157 |
ray_fifo_out = printvals; |
| 158 |
} |
| 159 |
if (hresolu > 0) { |
| 160 |
if (vresolu > 0) |
| 161 |
fprtresolu(hresolu, vresolu, stdout); |
| 162 |
else |
| 163 |
fflush(stdout); |
| 164 |
} |
| 165 |
/* process file */ |
| 166 |
while (getvec(orig, inform, fp) == 0 && |
| 167 |
getvec(direc, inform, fp) == 0) { |
| 168 |
|
| 169 |
d = normalize(direc); |
| 170 |
if (d == 0.0) { /* zero ==> flush */ |
| 171 |
if ((--nextflush <= 0) | !vcount && something2flush) { |
| 172 |
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
| 173 |
error(USER, "child(ren) died"); |
| 174 |
bogusray(); |
| 175 |
fflush(stdout); |
| 176 |
something2flush = 0; |
| 177 |
nextflush = (vresolu > 0) & (hresolu > 1) ? 0 : |
| 178 |
hresolu; |
| 179 |
} else |
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bogusray(); |
| 181 |
} else { /* compute and print */ |
| 182 |
rtcompute(orig, direc, lim_dist ? d : 0.0); |
| 183 |
/* flush if time */ |
| 184 |
if (!--nextflush) { |
| 185 |
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
| 186 |
error(USER, "child(ren) died"); |
| 187 |
fflush(stdout); |
| 188 |
nextflush = hresolu; |
| 189 |
} else |
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something2flush = 1; |
| 191 |
} |
| 192 |
if (ferror(stdout)) |
| 193 |
error(SYSTEM, "write error"); |
| 194 |
if (vcount && !--vcount) /* check for end */ |
| 195 |
break; |
| 196 |
} |
| 197 |
if (ray_pnprocs > 1) { /* clean up children */ |
| 198 |
if (ray_fifo_flush() < 0) |
| 199 |
error(USER, "unable to complete processing"); |
| 200 |
ray_pclose(0); |
| 201 |
} |
| 202 |
if (fflush(stdout) < 0) |
| 203 |
error(SYSTEM, "write error"); |
| 204 |
if (vcount) |
| 205 |
error(USER, "unexpected EOF on input"); |
| 206 |
if (fname != NULL) |
| 207 |
fclose(fp); |
| 208 |
} |
| 209 |
|
| 210 |
|
| 211 |
static void |
| 212 |
trace_sources(void) /* trace rays to light sources, also */ |
| 213 |
{ |
| 214 |
int sn; |
| 215 |
|
| 216 |
for (sn = 0; sn < nsources; sn++) |
| 217 |
source[sn].sflags |= SFOLLOW; |
| 218 |
} |
| 219 |
|
| 220 |
|
| 221 |
static void |
| 222 |
setoutput( /* set up output tables */ |
| 223 |
char *vs |
| 224 |
) |
| 225 |
{ |
| 226 |
oputf_t **table = ray_out; |
| 227 |
|
| 228 |
castonly = 1; |
| 229 |
while (*vs) |
| 230 |
switch (*vs++) { |
| 231 |
case 'T': /* trace sources */ |
| 232 |
if (!*vs) break; |
| 233 |
trace_sources(); |
| 234 |
/* fall through */ |
| 235 |
case 't': /* trace */ |
| 236 |
if (!*vs) break; |
| 237 |
*table = NULL; |
| 238 |
table = every_out; |
| 239 |
trace = ourtrace; |
| 240 |
castonly = 0; |
| 241 |
break; |
| 242 |
case 'o': /* origin */ |
| 243 |
*table++ = oputo; |
| 244 |
break; |
| 245 |
case 'd': /* direction */ |
| 246 |
*table++ = oputd; |
| 247 |
break; |
| 248 |
case 'r': /* reflected contrib. */ |
| 249 |
*table++ = oputr; |
| 250 |
castonly = 0; |
| 251 |
break; |
| 252 |
case 'R': /* reflected distance */ |
| 253 |
*table++ = oputR; |
| 254 |
castonly = 0; |
| 255 |
break; |
| 256 |
case 'x': /* xmit contrib. */ |
| 257 |
*table++ = oputx; |
| 258 |
castonly = 0; |
| 259 |
break; |
| 260 |
case 'X': /* xmit distance */ |
| 261 |
*table++ = oputX; |
| 262 |
castonly = 0; |
| 263 |
break; |
| 264 |
case 'v': /* value */ |
| 265 |
*table++ = oputv; |
| 266 |
castonly = 0; |
| 267 |
break; |
| 268 |
case 'V': /* contribution */ |
| 269 |
*table++ = oputV; |
| 270 |
castonly = 0; |
| 271 |
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
| 272 |
error(WARNING, |
| 273 |
"-otV accuracy depends on -aa 0 -as 0"); |
| 274 |
break; |
| 275 |
case 'l': /* effective distance */ |
| 276 |
*table++ = oputl; |
| 277 |
castonly = 0; |
| 278 |
break; |
| 279 |
case 'c': /* local coordinates */ |
| 280 |
*table++ = oputc; |
| 281 |
break; |
| 282 |
case 'L': /* single ray length */ |
| 283 |
*table++ = oputL; |
| 284 |
break; |
| 285 |
case 'p': /* point */ |
| 286 |
*table++ = oputp; |
| 287 |
break; |
| 288 |
case 'n': /* perturbed normal */ |
| 289 |
*table++ = oputn; |
| 290 |
castonly = 0; |
| 291 |
break; |
| 292 |
case 'N': /* unperturbed normal */ |
| 293 |
*table++ = oputN; |
| 294 |
break; |
| 295 |
case 's': /* surface */ |
| 296 |
*table++ = oputs; |
| 297 |
break; |
| 298 |
case 'w': /* weight */ |
| 299 |
*table++ = oputw; |
| 300 |
break; |
| 301 |
case 'W': /* coefficient */ |
| 302 |
*table++ = oputW; |
| 303 |
castonly = 0; |
| 304 |
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
| 305 |
error(WARNING, |
| 306 |
"-otW accuracy depends on -aa 0 -as 0"); |
| 307 |
break; |
| 308 |
case 'm': /* modifier */ |
| 309 |
*table++ = oputm; |
| 310 |
break; |
| 311 |
case 'M': /* material */ |
| 312 |
*table++ = oputM; |
| 313 |
break; |
| 314 |
case '~': /* tilde */ |
| 315 |
*table++ = oputtilde; |
| 316 |
break; |
| 317 |
} |
| 318 |
*table = NULL; |
| 319 |
} |
| 320 |
|
| 321 |
|
| 322 |
static void |
| 323 |
bogusray(void) /* print out empty record */ |
| 324 |
{ |
| 325 |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 326 |
printvals(&thisray); |
| 327 |
} |
| 328 |
|
| 329 |
|
| 330 |
static void |
| 331 |
raycast( /* compute first ray intersection only */ |
| 332 |
RAY *r |
| 333 |
) |
| 334 |
{ |
| 335 |
if (!localhit(r, &thescene)) { |
| 336 |
if (r->ro == &Aftplane) { /* clipped */ |
| 337 |
r->ro = NULL; |
| 338 |
r->rot = FHUGE; |
| 339 |
} else |
| 340 |
sourcehit(r); |
| 341 |
} |
| 342 |
} |
| 343 |
|
| 344 |
|
| 345 |
static void |
| 346 |
rayirrad( /* compute irradiance rather than radiance */ |
| 347 |
RAY *r |
| 348 |
) |
| 349 |
{ |
| 350 |
void (*old_revf)(RAY *) = r->revf; |
| 351 |
/* pretend we hit surface */ |
| 352 |
r->rxt = r->rot = 1e-5; |
| 353 |
VSUM(r->rop, r->rorg, r->rdir, r->rot); |
| 354 |
r->ron[0] = -r->rdir[0]; |
| 355 |
r->ron[1] = -r->rdir[1]; |
| 356 |
r->ron[2] = -r->rdir[2]; |
| 357 |
r->rod = 1.0; |
| 358 |
/* compute result */ |
| 359 |
r->revf = raytrace; |
| 360 |
(*ofun[Lamb.otype].funp)(&Lamb, r); |
| 361 |
r->revf = old_revf; |
| 362 |
} |
| 363 |
|
| 364 |
|
| 365 |
static void |
| 366 |
rtcompute( /* compute and print ray value(s) */ |
| 367 |
FVECT org, |
| 368 |
FVECT dir, |
| 369 |
double dmax |
| 370 |
) |
| 371 |
{ |
| 372 |
/* set up ray */ |
| 373 |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 374 |
if (imm_irrad) { |
| 375 |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
| 376 |
thisray.rdir[0] = -dir[0]; |
| 377 |
thisray.rdir[1] = -dir[1]; |
| 378 |
thisray.rdir[2] = -dir[2]; |
| 379 |
thisray.rmax = 0.0; |
| 380 |
thisray.revf = rayirrad; |
| 381 |
} else { |
| 382 |
VCOPY(thisray.rorg, org); |
| 383 |
VCOPY(thisray.rdir, dir); |
| 384 |
thisray.rmax = dmax; |
| 385 |
if (castonly) |
| 386 |
thisray.revf = raycast; |
| 387 |
} |
| 388 |
if (ray_pnprocs > 1) { /* multiprocessing FIFO? */ |
| 389 |
if (ray_fifo_in(&thisray) < 0) |
| 390 |
error(USER, "lost children"); |
| 391 |
return; |
| 392 |
} |
| 393 |
samplendx++; /* else do it ourselves */ |
| 394 |
rayvalue(&thisray); |
| 395 |
printvals(&thisray); |
| 396 |
} |
| 397 |
|
| 398 |
|
| 399 |
static int |
| 400 |
printvals( /* print requested ray values */ |
| 401 |
RAY *r |
| 402 |
) |
| 403 |
{ |
| 404 |
oputf_t **tp; |
| 405 |
|
| 406 |
if (ray_out[0] == NULL) |
| 407 |
return(0); |
| 408 |
for (tp = ray_out; *tp != NULL; tp++) |
| 409 |
(**tp)(r); |
| 410 |
if (outform == 'a') |
| 411 |
putchar('\n'); |
| 412 |
return(1); |
| 413 |
} |
| 414 |
|
| 415 |
|
| 416 |
static int |
| 417 |
getvec( /* get a vector from fp */ |
| 418 |
FVECT vec, |
| 419 |
int fmt, |
| 420 |
FILE *fp |
| 421 |
) |
| 422 |
{ |
| 423 |
static float vf[3]; |
| 424 |
static double vd[3]; |
| 425 |
char buf[32]; |
| 426 |
int i; |
| 427 |
|
| 428 |
switch (fmt) { |
| 429 |
case 'a': /* ascii */ |
| 430 |
for (i = 0; i < 3; i++) { |
| 431 |
if (fgetword(buf, sizeof(buf), fp) == NULL || |
| 432 |
!isflt(buf)) |
| 433 |
return(-1); |
| 434 |
vec[i] = atof(buf); |
| 435 |
} |
| 436 |
break; |
| 437 |
case 'f': /* binary float */ |
| 438 |
if (getbinary(vf, sizeof(float), 3, fp) != 3) |
| 439 |
return(-1); |
| 440 |
VCOPY(vec, vf); |
| 441 |
break; |
| 442 |
case 'd': /* binary double */ |
| 443 |
if (getbinary(vd, sizeof(double), 3, fp) != 3) |
| 444 |
return(-1); |
| 445 |
VCOPY(vec, vd); |
| 446 |
break; |
| 447 |
default: |
| 448 |
error(CONSISTENCY, "botched input format"); |
| 449 |
} |
| 450 |
return(0); |
| 451 |
} |
| 452 |
|
| 453 |
|
| 454 |
void |
| 455 |
tranotify( /* record new modifier */ |
| 456 |
OBJECT obj |
| 457 |
) |
| 458 |
{ |
| 459 |
static int hitlimit = 0; |
| 460 |
OBJREC *o = objptr(obj); |
| 461 |
char **tralp; |
| 462 |
|
| 463 |
if (obj == OVOID) { /* starting over */ |
| 464 |
traset[0] = 0; |
| 465 |
hitlimit = 0; |
| 466 |
return; |
| 467 |
} |
| 468 |
if (hitlimit || !ismodifier(o->otype)) |
| 469 |
return; |
| 470 |
for (tralp = tralist; *tralp != NULL; tralp++) |
| 471 |
if (!strcmp(o->oname, *tralp)) { |
| 472 |
if (traset[0] >= MAXTSET) { |
| 473 |
error(WARNING, "too many modifiers in trace list"); |
| 474 |
hitlimit++; |
| 475 |
return; /* should this be fatal? */ |
| 476 |
} |
| 477 |
insertelem(traset, obj); |
| 478 |
return; |
| 479 |
} |
| 480 |
} |
| 481 |
|
| 482 |
|
| 483 |
static void |
| 484 |
ourtrace( /* print ray values */ |
| 485 |
RAY *r |
| 486 |
) |
| 487 |
{ |
| 488 |
oputf_t **tp; |
| 489 |
|
| 490 |
if (every_out[0] == NULL) |
| 491 |
return; |
| 492 |
if (r->ro == NULL) { |
| 493 |
if (traincl == 1) |
| 494 |
return; |
| 495 |
} else if (traincl != -1 && traincl != inset(traset, r->ro->omod)) |
| 496 |
return; |
| 497 |
tabin(r); |
| 498 |
for (tp = every_out; *tp != NULL; tp++) |
| 499 |
(**tp)(r); |
| 500 |
if (outform == 'a') |
| 501 |
putchar('\n'); |
| 502 |
} |
| 503 |
|
| 504 |
|
| 505 |
static void |
| 506 |
tabin( /* tab in appropriate amount */ |
| 507 |
RAY *r |
| 508 |
) |
| 509 |
{ |
| 510 |
const RAY *rp; |
| 511 |
|
| 512 |
for (rp = r->parent; rp != NULL; rp = rp->parent) |
| 513 |
putchar('\t'); |
| 514 |
} |
| 515 |
|
| 516 |
|
| 517 |
static void |
| 518 |
oputo( /* print origin */ |
| 519 |
RAY *r |
| 520 |
) |
| 521 |
{ |
| 522 |
(*putreal)(r->rorg, 3); |
| 523 |
} |
| 524 |
|
| 525 |
|
| 526 |
static void |
| 527 |
oputd( /* print direction */ |
| 528 |
RAY *r |
| 529 |
) |
| 530 |
{ |
| 531 |
(*putreal)(r->rdir, 3); |
| 532 |
} |
| 533 |
|
| 534 |
|
| 535 |
static void |
| 536 |
oputr( /* print mirrored contribution */ |
| 537 |
RAY *r |
| 538 |
) |
| 539 |
{ |
| 540 |
RREAL cval[3]; |
| 541 |
|
| 542 |
cval[0] = colval(r->mcol,RED); |
| 543 |
cval[1] = colval(r->mcol,GRN); |
| 544 |
cval[2] = colval(r->mcol,BLU); |
| 545 |
(*putreal)(cval, 3); |
| 546 |
} |
| 547 |
|
| 548 |
|
| 549 |
|
| 550 |
static void |
| 551 |
oputR( /* print mirrored distance */ |
| 552 |
RAY *r |
| 553 |
) |
| 554 |
{ |
| 555 |
(*putreal)(&r->rmt, 1); |
| 556 |
} |
| 557 |
|
| 558 |
|
| 559 |
static void |
| 560 |
oputx( /* print unmirrored contribution */ |
| 561 |
RAY *r |
| 562 |
) |
| 563 |
{ |
| 564 |
RREAL cval[3]; |
| 565 |
|
| 566 |
cval[0] = colval(r->rcol,RED) - colval(r->mcol,RED); |
| 567 |
cval[1] = colval(r->rcol,GRN) - colval(r->mcol,GRN); |
| 568 |
cval[2] = colval(r->rcol,BLU) - colval(r->mcol,BLU); |
| 569 |
(*putreal)(cval, 3); |
| 570 |
} |
| 571 |
|
| 572 |
|
| 573 |
static void |
| 574 |
oputX( /* print unmirrored distance */ |
| 575 |
RAY *r |
| 576 |
) |
| 577 |
{ |
| 578 |
(*putreal)(&r->rxt, 1); |
| 579 |
} |
| 580 |
|
| 581 |
|
| 582 |
static void |
| 583 |
oputv( /* print value */ |
| 584 |
RAY *r |
| 585 |
) |
| 586 |
{ |
| 587 |
RREAL cval[3]; |
| 588 |
|
| 589 |
if (outform == 'c') { |
| 590 |
COLR cout; |
| 591 |
setcolr(cout, colval(r->rcol,RED), |
| 592 |
colval(r->rcol,GRN), |
| 593 |
colval(r->rcol,BLU)); |
| 594 |
putbinary(cout, sizeof(cout), 1, stdout); |
| 595 |
return; |
| 596 |
} |
| 597 |
cval[0] = colval(r->rcol,RED); |
| 598 |
cval[1] = colval(r->rcol,GRN); |
| 599 |
cval[2] = colval(r->rcol,BLU); |
| 600 |
(*putreal)(cval, 3); |
| 601 |
} |
| 602 |
|
| 603 |
|
| 604 |
static void |
| 605 |
oputV( /* print value contribution */ |
| 606 |
RAY *r |
| 607 |
) |
| 608 |
{ |
| 609 |
RREAL contr[3]; |
| 610 |
|
| 611 |
raycontrib(contr, r, PRIMARY); |
| 612 |
multcolor(contr, r->rcol); |
| 613 |
(*putreal)(contr, 3); |
| 614 |
} |
| 615 |
|
| 616 |
|
| 617 |
static void |
| 618 |
oputl( /* print effective distance */ |
| 619 |
RAY *r |
| 620 |
) |
| 621 |
{ |
| 622 |
RREAL d = raydistance(r); |
| 623 |
|
| 624 |
(*putreal)(&d, 1); |
| 625 |
} |
| 626 |
|
| 627 |
|
| 628 |
static void |
| 629 |
oputL( /* print single ray length */ |
| 630 |
RAY *r |
| 631 |
) |
| 632 |
{ |
| 633 |
(*putreal)(&r->rot, 1); |
| 634 |
} |
| 635 |
|
| 636 |
|
| 637 |
static void |
| 638 |
oputc( /* print local coordinates */ |
| 639 |
RAY *r |
| 640 |
) |
| 641 |
{ |
| 642 |
(*putreal)(r->uv, 2); |
| 643 |
} |
| 644 |
|
| 645 |
|
| 646 |
static RREAL vdummy[3] = {0.0, 0.0, 0.0}; |
| 647 |
|
| 648 |
|
| 649 |
static void |
| 650 |
oputp( /* print point */ |
| 651 |
RAY *r |
| 652 |
) |
| 653 |
{ |
| 654 |
if (r->rot < FHUGE) |
| 655 |
(*putreal)(r->rop, 3); |
| 656 |
else |
| 657 |
(*putreal)(vdummy, 3); |
| 658 |
} |
| 659 |
|
| 660 |
|
| 661 |
static void |
| 662 |
oputN( /* print unperturbed normal */ |
| 663 |
RAY *r |
| 664 |
) |
| 665 |
{ |
| 666 |
if (r->rot < FHUGE) |
| 667 |
(*putreal)(r->ron, 3); |
| 668 |
else |
| 669 |
(*putreal)(vdummy, 3); |
| 670 |
} |
| 671 |
|
| 672 |
|
| 673 |
static void |
| 674 |
oputn( /* print perturbed normal */ |
| 675 |
RAY *r |
| 676 |
) |
| 677 |
{ |
| 678 |
FVECT pnorm; |
| 679 |
|
| 680 |
if (r->rot >= FHUGE) { |
| 681 |
(*putreal)(vdummy, 3); |
| 682 |
return; |
| 683 |
} |
| 684 |
raynormal(pnorm, r); |
| 685 |
(*putreal)(pnorm, 3); |
| 686 |
} |
| 687 |
|
| 688 |
|
| 689 |
static void |
| 690 |
oputs( /* print name */ |
| 691 |
RAY *r |
| 692 |
) |
| 693 |
{ |
| 694 |
if (r->ro != NULL) |
| 695 |
fputs(r->ro->oname, stdout); |
| 696 |
else |
| 697 |
putchar('*'); |
| 698 |
putchar('\t'); |
| 699 |
} |
| 700 |
|
| 701 |
|
| 702 |
static void |
| 703 |
oputw( /* print weight */ |
| 704 |
RAY *r |
| 705 |
) |
| 706 |
{ |
| 707 |
RREAL rwt = r->rweight; |
| 708 |
|
| 709 |
(*putreal)(&rwt, 1); |
| 710 |
} |
| 711 |
|
| 712 |
|
| 713 |
static void |
| 714 |
oputW( /* print coefficient */ |
| 715 |
RAY *r |
| 716 |
) |
| 717 |
{ |
| 718 |
RREAL contr[3]; |
| 719 |
/* shadow ray not on source? */ |
| 720 |
if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
| 721 |
setcolor(contr, 0.0, 0.0, 0.0); |
| 722 |
else |
| 723 |
raycontrib(contr, r, PRIMARY); |
| 724 |
|
| 725 |
(*putreal)(contr, 3); |
| 726 |
} |
| 727 |
|
| 728 |
|
| 729 |
static void |
| 730 |
oputm( /* print modifier */ |
| 731 |
RAY *r |
| 732 |
) |
| 733 |
{ |
| 734 |
if (r->ro != NULL) |
| 735 |
if (r->ro->omod != OVOID) |
| 736 |
fputs(objptr(r->ro->omod)->oname, stdout); |
| 737 |
else |
| 738 |
fputs(VOIDID, stdout); |
| 739 |
else |
| 740 |
putchar('*'); |
| 741 |
putchar('\t'); |
| 742 |
} |
| 743 |
|
| 744 |
|
| 745 |
static void |
| 746 |
oputM( /* print material */ |
| 747 |
RAY *r |
| 748 |
) |
| 749 |
{ |
| 750 |
OBJREC *mat; |
| 751 |
|
| 752 |
if (r->ro != NULL) { |
| 753 |
if ((mat = findmaterial(r->ro)) != NULL) |
| 754 |
fputs(mat->oname, stdout); |
| 755 |
else |
| 756 |
fputs(VOIDID, stdout); |
| 757 |
} else |
| 758 |
putchar('*'); |
| 759 |
putchar('\t'); |
| 760 |
} |
| 761 |
|
| 762 |
|
| 763 |
static void |
| 764 |
oputtilde( /* output tilde (spacer) */ |
| 765 |
RAY *r |
| 766 |
) |
| 767 |
{ |
| 768 |
fputs("~\t", stdout); |
| 769 |
} |
| 770 |
|
| 771 |
|
| 772 |
static void |
| 773 |
puta( /* print ascii value(s) */ |
| 774 |
RREAL *v, int n |
| 775 |
) |
| 776 |
{ |
| 777 |
if (n == 3) { |
| 778 |
printf("%e\t%e\t%e\t", v[0], v[1], v[2]); |
| 779 |
return; |
| 780 |
} |
| 781 |
while (n--) |
| 782 |
printf("%e\t", *v++); |
| 783 |
} |
| 784 |
|
| 785 |
|
| 786 |
static void |
| 787 |
putd(RREAL *v, int n) /* print binary double(s) */ |
| 788 |
{ |
| 789 |
#ifdef SMLFLT |
| 790 |
double da[3]; |
| 791 |
int i; |
| 792 |
|
| 793 |
if (n > 3) |
| 794 |
error(INTERNAL, "code error in putd()"); |
| 795 |
for (i = n; i--; ) |
| 796 |
da[i] = v[i]; |
| 797 |
putbinary(da, sizeof(double), n, stdout); |
| 798 |
#else |
| 799 |
putbinary(v, sizeof(RREAL), n, stdout); |
| 800 |
#endif |
| 801 |
} |
| 802 |
|
| 803 |
|
| 804 |
static void |
| 805 |
putf(RREAL *v, int n) /* print binary float(s) */ |
| 806 |
{ |
| 807 |
#ifndef SMLFLT |
| 808 |
float fa[3]; |
| 809 |
int i; |
| 810 |
|
| 811 |
if (n > 3) |
| 812 |
error(INTERNAL, "code error in putf()"); |
| 813 |
for (i = n; i--; ) |
| 814 |
fa[i] = v[i]; |
| 815 |
putbinary(fa, sizeof(float), n, stdout); |
| 816 |
#else |
| 817 |
putbinary(v, sizeof(RREAL), n, stdout); |
| 818 |
#endif |
| 819 |
} |
