| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rxtrace.cpp,v 2.2 2024/03/12 16:54:51 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* C++ module for individual ray tracing. |
| 6 |
*/ |
| 7 |
|
| 8 |
/* |
| 9 |
* Input is in the form: |
| 10 |
* |
| 11 |
* xorg yorg zorg xdir ydir zdir |
| 12 |
* |
| 13 |
* The direction need not be normalized. Output is flexible. |
| 14 |
* If the direction vector is (0,0,0), then the output is flushed. |
| 15 |
* All values default to ascii representation of real |
| 16 |
* numbers. Binary representations can be selected |
| 17 |
* with '-ff' for float or '-fd' for double. By default, |
| 18 |
* radiance is computed. The '-i' or '-I' options indicate that |
| 19 |
* irradiance values are desired. |
| 20 |
*/ |
| 21 |
|
| 22 |
#include "copyright.h" |
| 23 |
|
| 24 |
#include "RtraceSimulManager.h" |
| 25 |
#include "platform.h" |
| 26 |
#include "otypes.h" |
| 27 |
#include "otspecial.h" |
| 28 |
#include "source.h" |
| 29 |
#include "resolu.h" |
| 30 |
|
| 31 |
extern int inform; /* input format */ |
| 32 |
extern int outform; /* output format */ |
| 33 |
|
| 34 |
extern char *tralist[]; /* list of modifers to trace (or no) */ |
| 35 |
extern int traincl; /* include == 1, exclude == 0 */ |
| 36 |
|
| 37 |
extern int hresolu; /* horizontal resolution */ |
| 38 |
extern int vresolu; /* vertical resolution */ |
| 39 |
|
| 40 |
extern int castonly; /* only doing ray-casting? */ |
| 41 |
|
| 42 |
extern double (*sens_curve)(SCOLOR scol); /* spectral conversion for 1-channel */ |
| 43 |
extern double out_scalefactor; /* output calibration scale factor */ |
| 44 |
extern RGBPRIMP out_prims; /* output color primitives (NULL if spectral) */ |
| 45 |
|
| 46 |
#ifndef MAXTSET |
| 47 |
#define MAXTSET 8191 /* maximum number in trace set */ |
| 48 |
#endif |
| 49 |
OBJECT traset[MAXTSET+1]={0}; /* trace include/exclude set */ |
| 50 |
|
| 51 |
// global simulation manager |
| 52 |
extern RtraceSimulManager myRTmanager; |
| 53 |
|
| 54 |
static FILE *inpfp = NULL; /* input stream pointer */ |
| 55 |
|
| 56 |
static FVECT *inp_queue = NULL; /* ray input queue if flushing */ |
| 57 |
static int inp_qpos = 0; /* next ray to return */ |
| 58 |
static int inp_qend = 0; /* number of rays in this work group */ |
| 59 |
|
| 60 |
typedef void putf_t(RREAL *v, int n); |
| 61 |
static putf_t puta, putd, putf, putrgbe; |
| 62 |
|
| 63 |
typedef void oputf_t(RAY *r); |
| 64 |
static oputf_t oputo, oputd, oputv, oputV, oputl, oputL, oputc, oputp, |
| 65 |
oputr, oputR, oputx, oputX, oputn, oputN, oputs, |
| 66 |
oputw, oputW, oputm, oputM, oputtilde; |
| 67 |
|
| 68 |
extern void tranotify(OBJECT obj); |
| 69 |
static void tabin(RAY *r); |
| 70 |
static RayReportCall ourtrace; |
| 71 |
static RayReportCall printvals; |
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|
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static void putscolor(COLORV *scol); |
| 74 |
|
| 75 |
static oputf_t *ray_out[32], *every_out[32]; |
| 76 |
static putf_t *putreal; |
| 77 |
|
| 78 |
void |
| 79 |
quit( /* quit program */ |
| 80 |
int code |
| 81 |
) |
| 82 |
{ |
| 83 |
if (ray_pnprocs < 0) |
| 84 |
_exit(code); /* avoid flush in child */ |
| 85 |
|
| 86 |
int ec = myRTmanager.Cleanup(); |
| 87 |
|
| 88 |
if (ec) code = ec; |
| 89 |
|
| 90 |
exit(code); |
| 91 |
} |
| 92 |
|
| 93 |
const char * |
| 94 |
formstr( /* return format identifier */ |
| 95 |
int f |
| 96 |
) |
| 97 |
{ |
| 98 |
switch (f) { |
| 99 |
case 'a': return("ascii"); |
| 100 |
case 'f': return("float"); |
| 101 |
case 'd': return("double"); |
| 102 |
case 'c': |
| 103 |
if (out_prims == NULL) |
| 104 |
return(SPECFMT); |
| 105 |
if (out_prims == xyzprims) |
| 106 |
return(CIEFMT); |
| 107 |
return(COLRFMT); |
| 108 |
} |
| 109 |
return("unknown"); |
| 110 |
} |
| 111 |
|
| 112 |
static bool |
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getvec( /* get a vector from fp */ |
| 114 |
FVECT vec, |
| 115 |
int fmt, |
| 116 |
FILE *fp |
| 117 |
) |
| 118 |
{ |
| 119 |
static char buf[32]; |
| 120 |
float * vf = (float *)buf; |
| 121 |
double * vd = (double *)buf; |
| 122 |
int i; |
| 123 |
|
| 124 |
switch (fmt) { |
| 125 |
case 'a': /* ascii */ |
| 126 |
for (i = 0; i < 3; i++) { |
| 127 |
if (fgetword(buf, sizeof(buf), fp) == NULL || |
| 128 |
!isflt(buf)) |
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return false; |
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vec[i] = atof(buf); |
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} |
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break; |
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#ifdef SMLFLT |
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case 'f': /* binary float */ |
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if (getbinary(vec, sizeof(RREAL), 3, fp) != 3) |
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return false; |
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break; |
| 138 |
case 'd': /* binary double */ |
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if (getbinary(vd, sizeof(double), 3, fp) != 3) |
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return false; |
| 141 |
VCOPY(vec, vd); |
| 142 |
break; |
| 143 |
#else |
| 144 |
case 'f': /* binary float */ |
| 145 |
if (getbinary(vf, sizeof(float), 3, fp) != 3) |
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return false; |
| 147 |
VCOPY(vec, vf); |
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break; |
| 149 |
case 'd': /* binary double */ |
| 150 |
if (getbinary(vec, sizeof(RREAL), 3, fp) != 3) |
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return false; |
| 152 |
break; |
| 153 |
#endif |
| 154 |
default: |
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error(CONSISTENCY, "botched input format"); |
| 156 |
} |
| 157 |
return true; |
| 158 |
} |
| 159 |
|
| 160 |
// read ray list from inpfp |
| 161 |
static int |
| 162 |
getrays(FVECT org_dir[], int n) |
| 163 |
{ |
| 164 |
int nread = 0; |
| 165 |
|
| 166 |
while (n-- > 0) { |
| 167 |
if (!getvec(org_dir[0], inform, inpfp) || |
| 168 |
!getvec(org_dir[1], inform, inpfp)) |
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break; |
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++nread; |
| 171 |
if (IsZeroVec(org_dir[1])) |
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break; |
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org_dir += 2; |
| 174 |
} |
| 175 |
return nread; |
| 176 |
} |
| 177 |
|
| 178 |
void |
| 179 |
rtrace( /* trace rays from stdin or file */ |
| 180 |
char *fname, |
| 181 |
int nproc |
| 182 |
) |
| 183 |
{ |
| 184 |
RNUMBER vcount = (hresolu > 1) ? (RNUMBER)hresolu*vresolu |
| 185 |
: (RNUMBER)vresolu; |
| 186 |
const int flushIntvl = (!vresolu | (hresolu <= 1)) * hresolu; |
| 187 |
FVECT * ivbuf = (FVECT *)malloc(2*sizeof(FVECT) * |
| 188 |
(flushIntvl + !flushIntvl)); |
| 189 |
if (ivbuf == NULL) |
| 190 |
error(SYSTEM, "cannot allocate input vector buffer"); |
| 191 |
/* set up input */ |
| 192 |
if (fname == NULL) |
| 193 |
inpfp = stdin; |
| 194 |
else if ((inpfp = fopen(fname, "r")) == NULL) { |
| 195 |
sprintf(errmsg, "cannot open input file \"%s\"", fname); |
| 196 |
error(SYSTEM, errmsg); |
| 197 |
} |
| 198 |
if (inform != 'a') |
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SET_FILE_BINARY(inpfp); |
| 200 |
/* set up output */ |
| 201 |
if (castonly || every_out[0] != NULL) { |
| 202 |
nproc = 1; /* don't bother multiprocessing */ |
| 203 |
} else if (nproc <= 0) { // need to get default for system? |
| 204 |
nproc = myRTmanager.GetNCores() + nproc; |
| 205 |
if (nproc <= 0) nproc = 1; |
| 206 |
} |
| 207 |
if ((flushIntvl > 0) & (nproc > flushIntvl)) { |
| 208 |
error(WARNING, "reducing number of processes to match flush interval"); |
| 209 |
nproc = flushIntvl; |
| 210 |
} |
| 211 |
nproc = myRTmanager.SetThreadCount(nproc); |
| 212 |
if (ray_out[0]) |
| 213 |
myRTmanager.SetCookedCall(printvals); |
| 214 |
if (every_out[0]) |
| 215 |
myRTmanager.SetTraceCall(ourtrace); |
| 216 |
myRTmanager.rtFlags |= RTdoFIFO; |
| 217 |
#ifdef getc_unlocked |
| 218 |
flockfile(inpfp); /* avoid lock/unlock overhead */ |
| 219 |
flockfile(stdout); |
| 220 |
#endif |
| 221 |
if (hresolu > 0) { // print resolution string if appropriate |
| 222 |
if (vresolu > 0) |
| 223 |
fprtresolu(hresolu, vresolu, stdout); |
| 224 |
else |
| 225 |
fflush(stdout); |
| 226 |
} |
| 227 |
int n; /* process input rays */ |
| 228 |
bool pending = false; |
| 229 |
while ((n = getrays(ivbuf, flushIntvl + !flushIntvl)) > 0) { |
| 230 |
if ((vcount > 0) & (n > vcount)) { |
| 231 |
error(WARNING, "extra ray(s) past end of input"); |
| 232 |
n = vcount; |
| 233 |
} // put ray(s) into queue |
| 234 |
if (myRTmanager.EnqueueBundle(ivbuf, n) < n) |
| 235 |
error(USER, "ray queuing failure"); |
| 236 |
pending |= (n > 1); // time to flush output? |
| 237 |
bool atZero = IsZeroVec(ivbuf[2*n-1]); |
| 238 |
if (pending & (atZero | (n == flushIntvl))) { |
| 239 |
if (!myRTmanager.FlushQueue()) |
| 240 |
error(USER, "ray flush error"); |
| 241 |
fflush(stdout); |
| 242 |
pending = false; |
| 243 |
} else |
| 244 |
pending |= !atZero; |
| 245 |
if (ferror(stdout)) |
| 246 |
error(SYSTEM, "write error"); |
| 247 |
if (vcount && !(vcount -= n)) /* check for end */ |
| 248 |
break; |
| 249 |
} |
| 250 |
if (vcount) |
| 251 |
error(WARNING, feof(inpfp) ? "unexpected EOF on input" : |
| 252 |
"input read error"); |
| 253 |
if (fflush(stdout) < 0) |
| 254 |
error(SYSTEM, "write error"); |
| 255 |
if (fname != NULL) { |
| 256 |
fclose(inpfp); |
| 257 |
inpfp = NULL; |
| 258 |
} |
| 259 |
free(ivbuf); |
| 260 |
} |
| 261 |
|
| 262 |
int |
| 263 |
setrtoutput(const char *outvals) /* set up output tables, return #comp */ |
| 264 |
{ |
| 265 |
const char *vs = outvals; |
| 266 |
oputf_t **table = ray_out; |
| 267 |
const int nco = (sens_curve != NULL) ? 1 : |
| 268 |
(out_prims != NULL) ? 3 : NCSAMP; |
| 269 |
int ncomp = 0; |
| 270 |
|
| 271 |
if (!*vs) |
| 272 |
error(USER, "empty output specification"); |
| 273 |
|
| 274 |
switch (outform) { /* make sure (*putreal)() calls someone! */ |
| 275 |
case 'a': putreal = puta; break; |
| 276 |
case 'f': putreal = putf; break; |
| 277 |
case 'd': putreal = putd; break; |
| 278 |
case 'c': |
| 279 |
if (outvals[1] || !strchr("vrx", outvals[0])) |
| 280 |
error(USER, "color format only with -ov, -or, -ox"); |
| 281 |
putreal = putrgbe; break; |
| 282 |
default: |
| 283 |
error(CONSISTENCY, "botched output format"); |
| 284 |
} |
| 285 |
castonly = 1; /* sets castonly as side-effect */ |
| 286 |
do |
| 287 |
switch (*vs) { |
| 288 |
case 'T': /* trace sources */ |
| 289 |
myRTmanager.rtFlags |= RTtraceSources; |
| 290 |
/* fall through */ |
| 291 |
case 't': /* trace */ |
| 292 |
if (!vs[1]) break; |
| 293 |
*table = NULL; |
| 294 |
table = every_out; |
| 295 |
castonly = 0; |
| 296 |
break; |
| 297 |
case 'o': /* origin */ |
| 298 |
*table++ = oputo; |
| 299 |
ncomp += 3; |
| 300 |
break; |
| 301 |
case 'd': /* direction */ |
| 302 |
*table++ = oputd; |
| 303 |
ncomp += 3; |
| 304 |
break; |
| 305 |
case 'r': /* reflected contrib. */ |
| 306 |
*table++ = oputr; |
| 307 |
ncomp += nco; |
| 308 |
castonly = 0; |
| 309 |
break; |
| 310 |
case 'R': /* reflected distance */ |
| 311 |
*table++ = oputR; |
| 312 |
ncomp++; |
| 313 |
castonly = 0; |
| 314 |
break; |
| 315 |
case 'x': /* xmit contrib. */ |
| 316 |
*table++ = oputx; |
| 317 |
ncomp += nco; |
| 318 |
castonly = 0; |
| 319 |
break; |
| 320 |
case 'X': /* xmit distance */ |
| 321 |
*table++ = oputX; |
| 322 |
ncomp++; |
| 323 |
castonly = 0; |
| 324 |
break; |
| 325 |
case 'v': /* value */ |
| 326 |
*table++ = oputv; |
| 327 |
ncomp += nco; |
| 328 |
castonly = 0; |
| 329 |
break; |
| 330 |
case 'V': /* contribution */ |
| 331 |
*table++ = oputV; |
| 332 |
ncomp += nco; |
| 333 |
castonly = 0; |
| 334 |
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
| 335 |
error(WARNING, |
| 336 |
"-otV accuracy depends on -aa 0 -as 0"); |
| 337 |
break; |
| 338 |
case 'l': /* effective distance */ |
| 339 |
*table++ = oputl; |
| 340 |
ncomp++; |
| 341 |
castonly = 0; |
| 342 |
break; |
| 343 |
case 'c': /* local coordinates */ |
| 344 |
*table++ = oputc; |
| 345 |
ncomp += 2; |
| 346 |
break; |
| 347 |
case 'L': /* single ray length */ |
| 348 |
*table++ = oputL; |
| 349 |
ncomp++; |
| 350 |
break; |
| 351 |
case 'p': /* point */ |
| 352 |
*table++ = oputp; |
| 353 |
ncomp += 3; |
| 354 |
break; |
| 355 |
case 'n': /* perturbed normal */ |
| 356 |
*table++ = oputn; |
| 357 |
ncomp += 3; |
| 358 |
castonly = 0; |
| 359 |
break; |
| 360 |
case 'N': /* unperturbed normal */ |
| 361 |
*table++ = oputN; |
| 362 |
ncomp += 3; |
| 363 |
break; |
| 364 |
case 's': /* surface */ |
| 365 |
*table++ = oputs; |
| 366 |
ncomp++; |
| 367 |
break; |
| 368 |
case 'w': /* weight */ |
| 369 |
*table++ = oputw; |
| 370 |
ncomp++; |
| 371 |
break; |
| 372 |
case 'W': /* coefficient */ |
| 373 |
*table++ = oputW; |
| 374 |
ncomp += nco; |
| 375 |
castonly = 0; |
| 376 |
if (ambounce > 0 && (ambacc > FTINY) | (ambssamp > 0)) |
| 377 |
error(WARNING, |
| 378 |
"-otW accuracy depends on -aa 0 -as 0"); |
| 379 |
break; |
| 380 |
case 'm': /* modifier */ |
| 381 |
*table++ = oputm; |
| 382 |
ncomp++; |
| 383 |
break; |
| 384 |
case 'M': /* material */ |
| 385 |
*table++ = oputM; |
| 386 |
ncomp++; |
| 387 |
break; |
| 388 |
case '~': /* tilde */ |
| 389 |
*table++ = oputtilde; |
| 390 |
break; |
| 391 |
default: |
| 392 |
sprintf(errmsg, "unrecognized output option '%c'", *vs); |
| 393 |
error(USER, errmsg); |
| 394 |
} |
| 395 |
while (*++vs); |
| 396 |
|
| 397 |
*table = NULL; |
| 398 |
if (*every_out != NULL) |
| 399 |
ncomp = 0; |
| 400 |
/* compatibility */ |
| 401 |
if ((do_irrad | (myRTmanager.rtFlags & RTimmIrrad)) && castonly) |
| 402 |
error(USER, "-I+ and -i+ options require some value output"); |
| 403 |
for (table = ray_out; *table != NULL; table++) { |
| 404 |
if ((*table == oputV) | (*table == oputW)) |
| 405 |
error(WARNING, "-oVW options require trace mode"); |
| 406 |
if ((do_irrad | (myRTmanager.rtFlags & RTimmIrrad)) && |
| 407 |
(*table == oputr) | (*table == oputR) | |
| 408 |
(*table == oputx) | (*table == oputX)) |
| 409 |
error(WARNING, "-orRxX options incompatible with -I+ and -i+"); |
| 410 |
} |
| 411 |
return(ncomp); |
| 412 |
} |
| 413 |
|
| 414 |
static int |
| 415 |
printvals( /* print requested ray values */ |
| 416 |
RAY *r, void *cd |
| 417 |
) |
| 418 |
{ |
| 419 |
oputf_t **tp; |
| 420 |
|
| 421 |
if (ray_out[0] == NULL) |
| 422 |
return 0; |
| 423 |
for (tp = ray_out; *tp != NULL; tp++) |
| 424 |
(**tp)(r); |
| 425 |
if (outform == 'a') |
| 426 |
putchar('\n'); |
| 427 |
return 1; |
| 428 |
} |
| 429 |
|
| 430 |
void |
| 431 |
tranotify( /* record new modifier */ |
| 432 |
OBJECT obj |
| 433 |
) |
| 434 |
{ |
| 435 |
static int hitlimit = 0; |
| 436 |
OBJREC *o = objptr(obj); |
| 437 |
char **tralp; |
| 438 |
|
| 439 |
if (obj == OVOID) { /* starting over */ |
| 440 |
traset[0] = 0; |
| 441 |
hitlimit = 0; |
| 442 |
return; |
| 443 |
} |
| 444 |
if (hitlimit || !ismodifier(o->otype)) |
| 445 |
return; |
| 446 |
for (tralp = tralist; *tralp != NULL; tralp++) |
| 447 |
if (!strcmp(o->oname, *tralp)) { |
| 448 |
if (traset[0] >= MAXTSET) { |
| 449 |
error(WARNING, "too many modifiers in trace list"); |
| 450 |
hitlimit++; |
| 451 |
return; /* should this be fatal? */ |
| 452 |
} |
| 453 |
insertelem(traset, obj); |
| 454 |
return; |
| 455 |
} |
| 456 |
} |
| 457 |
|
| 458 |
static int |
| 459 |
ourtrace( /* print ray values */ |
| 460 |
RAY *r, void *cd |
| 461 |
) |
| 462 |
{ |
| 463 |
oputf_t **tp; |
| 464 |
|
| 465 |
if (every_out[0] == NULL) |
| 466 |
return 0; |
| 467 |
if (r->ro == NULL) { |
| 468 |
if (traincl == 1) |
| 469 |
return 0; |
| 470 |
} else if (traincl != -1 && traincl != inset(traset, r->ro->omod)) |
| 471 |
return 0; |
| 472 |
tabin(r); |
| 473 |
for (tp = every_out; *tp != NULL; tp++) |
| 474 |
(**tp)(r); |
| 475 |
if (outform == 'a') |
| 476 |
putchar('\n'); |
| 477 |
return 1; |
| 478 |
} |
| 479 |
|
| 480 |
static void |
| 481 |
tabin( /* tab in appropriate amount */ |
| 482 |
RAY *r |
| 483 |
) |
| 484 |
{ |
| 485 |
const RAY *rp; |
| 486 |
|
| 487 |
for (rp = r->parent; rp != NULL; rp = rp->parent) |
| 488 |
putchar('\t'); |
| 489 |
} |
| 490 |
|
| 491 |
static void |
| 492 |
oputo( /* print origin */ |
| 493 |
RAY *r |
| 494 |
) |
| 495 |
{ |
| 496 |
(*putreal)(r->rorg, 3); |
| 497 |
} |
| 498 |
|
| 499 |
static void |
| 500 |
oputd( /* print direction */ |
| 501 |
RAY *r |
| 502 |
) |
| 503 |
{ |
| 504 |
(*putreal)(r->rdir, 3); |
| 505 |
} |
| 506 |
|
| 507 |
static void |
| 508 |
oputr( /* print mirrored contribution */ |
| 509 |
RAY *r |
| 510 |
) |
| 511 |
{ |
| 512 |
putscolor(r->mcol); |
| 513 |
} |
| 514 |
|
| 515 |
static void |
| 516 |
oputR( /* print mirrored distance */ |
| 517 |
RAY *r |
| 518 |
) |
| 519 |
{ |
| 520 |
(*putreal)(&r->rmt, 1); |
| 521 |
} |
| 522 |
|
| 523 |
static void |
| 524 |
oputx( /* print unmirrored contribution */ |
| 525 |
RAY *r |
| 526 |
) |
| 527 |
{ |
| 528 |
SCOLOR cdiff; |
| 529 |
|
| 530 |
copyscolor(cdiff, r->rcol); |
| 531 |
sopscolor(cdiff, -=, r->mcol); |
| 532 |
|
| 533 |
putscolor(cdiff); |
| 534 |
} |
| 535 |
|
| 536 |
static void |
| 537 |
oputX( /* print unmirrored distance */ |
| 538 |
RAY *r |
| 539 |
) |
| 540 |
{ |
| 541 |
(*putreal)(&r->rxt, 1); |
| 542 |
} |
| 543 |
|
| 544 |
static void |
| 545 |
oputv( /* print value */ |
| 546 |
RAY *r |
| 547 |
) |
| 548 |
{ |
| 549 |
putscolor(r->rcol); |
| 550 |
} |
| 551 |
|
| 552 |
static void |
| 553 |
oputV( /* print value contribution */ |
| 554 |
RAY *r |
| 555 |
) |
| 556 |
{ |
| 557 |
SCOLOR contr; |
| 558 |
|
| 559 |
raycontrib(contr, r, PRIMARY); |
| 560 |
smultscolor(contr, r->rcol); |
| 561 |
putscolor(contr); |
| 562 |
} |
| 563 |
|
| 564 |
static void |
| 565 |
oputl( /* print effective distance */ |
| 566 |
RAY *r |
| 567 |
) |
| 568 |
{ |
| 569 |
RREAL d = raydistance(r); |
| 570 |
|
| 571 |
(*putreal)(&d, 1); |
| 572 |
} |
| 573 |
|
| 574 |
static void |
| 575 |
oputL( /* print single ray length */ |
| 576 |
RAY *r |
| 577 |
) |
| 578 |
{ |
| 579 |
(*putreal)(&r->rot, 1); |
| 580 |
} |
| 581 |
|
| 582 |
static void |
| 583 |
oputc( /* print local coordinates */ |
| 584 |
RAY *r |
| 585 |
) |
| 586 |
{ |
| 587 |
(*putreal)(r->uv, 2); |
| 588 |
} |
| 589 |
|
| 590 |
static RREAL vdummy[3] = {0.0, 0.0, 0.0}; |
| 591 |
|
| 592 |
static void |
| 593 |
oputp( /* print intersection point */ |
| 594 |
RAY *r |
| 595 |
) |
| 596 |
{ |
| 597 |
(*putreal)(r->rop, 3); /* set to ray origin if distant or no hit */ |
| 598 |
} |
| 599 |
|
| 600 |
static void |
| 601 |
oputN( /* print unperturbed normal */ |
| 602 |
RAY *r |
| 603 |
) |
| 604 |
{ |
| 605 |
if (r->ro == NULL) { /* zero vector if clipped or no hit */ |
| 606 |
(*putreal)(vdummy, 3); |
| 607 |
return; |
| 608 |
} |
| 609 |
if (r->rflips & 1) { /* undo any flippin' flips */ |
| 610 |
FVECT unrm; |
| 611 |
unrm[0] = -r->ron[0]; |
| 612 |
unrm[1] = -r->ron[1]; |
| 613 |
unrm[2] = -r->ron[2]; |
| 614 |
(*putreal)(unrm, 3); |
| 615 |
} else |
| 616 |
(*putreal)(r->ron, 3); |
| 617 |
} |
| 618 |
|
| 619 |
static void |
| 620 |
oputn( /* print perturbed normal */ |
| 621 |
RAY *r |
| 622 |
) |
| 623 |
{ |
| 624 |
FVECT pnorm; |
| 625 |
|
| 626 |
if (r->ro == NULL) { /* clipped or no hit */ |
| 627 |
(*putreal)(vdummy, 3); |
| 628 |
return; |
| 629 |
} |
| 630 |
raynormal(pnorm, r); |
| 631 |
(*putreal)(pnorm, 3); |
| 632 |
} |
| 633 |
|
| 634 |
static void |
| 635 |
oputs( /* print name */ |
| 636 |
RAY *r |
| 637 |
) |
| 638 |
{ |
| 639 |
if (r->ro != NULL) |
| 640 |
fputs(r->ro->oname, stdout); |
| 641 |
else |
| 642 |
putchar('*'); |
| 643 |
putchar('\t'); |
| 644 |
} |
| 645 |
|
| 646 |
static void |
| 647 |
oputw( /* print weight */ |
| 648 |
RAY *r |
| 649 |
) |
| 650 |
{ |
| 651 |
RREAL rwt = r->rweight; |
| 652 |
|
| 653 |
(*putreal)(&rwt, 1); |
| 654 |
} |
| 655 |
|
| 656 |
static void |
| 657 |
oputW( /* print coefficient */ |
| 658 |
RAY *r |
| 659 |
) |
| 660 |
{ |
| 661 |
SCOLOR contr; |
| 662 |
/* shadow ray not on source? */ |
| 663 |
if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
| 664 |
scolorblack(contr); |
| 665 |
else |
| 666 |
raycontrib(contr, r, PRIMARY); |
| 667 |
|
| 668 |
putscolor(contr); |
| 669 |
} |
| 670 |
|
| 671 |
static void |
| 672 |
oputm( /* print modifier */ |
| 673 |
RAY *r |
| 674 |
) |
| 675 |
{ |
| 676 |
if (r->ro != NULL) |
| 677 |
if (r->ro->omod != OVOID) |
| 678 |
fputs(objptr(r->ro->omod)->oname, stdout); |
| 679 |
else |
| 680 |
fputs(VOIDID, stdout); |
| 681 |
else |
| 682 |
putchar('*'); |
| 683 |
putchar('\t'); |
| 684 |
} |
| 685 |
|
| 686 |
static void |
| 687 |
oputM( /* print material */ |
| 688 |
RAY *r |
| 689 |
) |
| 690 |
{ |
| 691 |
OBJREC *mat; |
| 692 |
|
| 693 |
if (r->ro != NULL) { |
| 694 |
if ((mat = findmaterial(r->ro)) != NULL) |
| 695 |
fputs(mat->oname, stdout); |
| 696 |
else |
| 697 |
fputs(VOIDID, stdout); |
| 698 |
} else |
| 699 |
putchar('*'); |
| 700 |
putchar('\t'); |
| 701 |
} |
| 702 |
|
| 703 |
static void |
| 704 |
oputtilde( /* output tilde (spacer) */ |
| 705 |
RAY *r |
| 706 |
) |
| 707 |
{ |
| 708 |
fputs("~\t", stdout); |
| 709 |
} |
| 710 |
|
| 711 |
static void |
| 712 |
puta( /* print ascii value(s) */ |
| 713 |
RREAL *v, int n |
| 714 |
) |
| 715 |
{ |
| 716 |
if (n == 3) { |
| 717 |
printf("%e\t%e\t%e\t", v[0], v[1], v[2]); |
| 718 |
return; |
| 719 |
} |
| 720 |
while (n--) |
| 721 |
printf("%e\t", *v++); |
| 722 |
} |
| 723 |
|
| 724 |
static void |
| 725 |
putd(RREAL *v, int n) /* output binary double(s) */ |
| 726 |
{ |
| 727 |
#ifdef SMLFLT |
| 728 |
double da[3]; |
| 729 |
int i; |
| 730 |
|
| 731 |
if (n > 3) |
| 732 |
error(INTERNAL, "code error in putd()"); |
| 733 |
for (i = n; i--; ) |
| 734 |
da[i] = v[i]; |
| 735 |
putbinary(da, sizeof(double), n, stdout); |
| 736 |
#else |
| 737 |
putbinary(v, sizeof(RREAL), n, stdout); |
| 738 |
#endif |
| 739 |
} |
| 740 |
|
| 741 |
static void |
| 742 |
putf(RREAL *v, int n) /* output binary float(s) */ |
| 743 |
{ |
| 744 |
#ifndef SMLFLT |
| 745 |
float fa[3]; |
| 746 |
int i; |
| 747 |
|
| 748 |
if (n > 3) |
| 749 |
error(INTERNAL, "code error in putf()"); |
| 750 |
for (i = n; i--; ) |
| 751 |
fa[i] = v[i]; |
| 752 |
putbinary(fa, sizeof(float), n, stdout); |
| 753 |
#else |
| 754 |
putbinary(v, sizeof(RREAL), n, stdout); |
| 755 |
#endif |
| 756 |
} |
| 757 |
|
| 758 |
static void |
| 759 |
putrgbe(RREAL *v, int n) /* output RGBE color */ |
| 760 |
{ |
| 761 |
COLR cout; |
| 762 |
|
| 763 |
if (n != 3) |
| 764 |
error(INTERNAL, "putrgbe() not called with 3 components"); |
| 765 |
setcolr(cout, v[0], v[1], v[2]); |
| 766 |
putbinary(cout, sizeof(cout), 1, stdout); |
| 767 |
} |
| 768 |
|
| 769 |
static void |
| 770 |
putscolor(COLORV *scol) /* output (spectral) color */ |
| 771 |
{ |
| 772 |
static COLORMAT xyz2myrgbmat; |
| 773 |
SCOLOR my_scol; |
| 774 |
COLOR col; |
| 775 |
/* single channel output? */ |
| 776 |
if (sens_curve != NULL) { |
| 777 |
RREAL v = (*sens_curve)(scol) * out_scalefactor; |
| 778 |
(*putreal)(&v, 1); |
| 779 |
return; |
| 780 |
} |
| 781 |
if (out_scalefactor != 1.) { /* apply scalefactor if any */ |
| 782 |
copyscolor(my_scol, scol); |
| 783 |
scalescolor(my_scol, out_scalefactor); |
| 784 |
scol = my_scol; |
| 785 |
} |
| 786 |
if (out_prims == NULL) { /* full spectral reporting */ |
| 787 |
if (outform == 'c') { |
| 788 |
SCOLR sclr; |
| 789 |
scolor_scolr(sclr, scol); |
| 790 |
putbinary(sclr, LSCOLR, 1, stdout); |
| 791 |
} else if (sizeof(RREAL) != sizeof(COLORV)) { |
| 792 |
RREAL sreal[MAXCSAMP]; |
| 793 |
int i = NCSAMP; |
| 794 |
while (i--) sreal[i] = scol[i]; |
| 795 |
(*putreal)(sreal, NCSAMP); |
| 796 |
} else |
| 797 |
(*putreal)((RREAL *)scol, NCSAMP); |
| 798 |
return; |
| 799 |
} |
| 800 |
if (out_prims == xyzprims) { |
| 801 |
scolor_cie(col, scol); |
| 802 |
} else if (out_prims == stdprims) { |
| 803 |
scolor_rgb(col, scol); |
| 804 |
} else { |
| 805 |
COLOR xyz; |
| 806 |
if (xyz2myrgbmat[0][0] == 0) |
| 807 |
compxyz2rgbWBmat(xyz2myrgbmat, out_prims); |
| 808 |
scolor_cie(xyz, scol); |
| 809 |
colortrans(col, xyz2myrgbmat, xyz); |
| 810 |
clipgamut(col, xyz[CIEY], CGAMUT_LOWER, cblack, cwhite); |
| 811 |
} |
| 812 |
if (outform == 'c') { |
| 813 |
COLR clr; |
| 814 |
setcolr(clr, colval(col,RED), colval(col,GRN), colval(col,BLU)); |
| 815 |
putbinary(clr, sizeof(COLR), 1, stdout); |
| 816 |
} else if (sizeof(RREAL) != sizeof(COLORV)) { |
| 817 |
RREAL creal[3]; |
| 818 |
copycolor(creal, col); |
| 819 |
(*putreal)(creal, 3); |
| 820 |
} else |
| 821 |
(*putreal)((RREAL *)col, 3); |
| 822 |
} |
