| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rxfluxmtx.cpp,v 2.6 2025/10/24 18:37:05 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* Calculate flux transfer matrix or matrices using RcontribSimulManager class |
| 6 |
* |
| 7 |
* Much of this is cribbed from util/rfluxmtx.c |
| 8 |
* Implementation here improves efficiency and overcomes receiver limits |
| 9 |
*/ |
| 10 |
|
| 11 |
#include "copyright.h" |
| 12 |
|
| 13 |
#include <ctype.h> |
| 14 |
#include <signal.h> |
| 15 |
#include <time.h> |
| 16 |
#include "RcontribSimulManager.h" |
| 17 |
#include "bsdf.h" |
| 18 |
#include "bsdf_m.h" |
| 19 |
#include "func.h" |
| 20 |
#include "random.h" |
| 21 |
#include "triangulate.h" |
| 22 |
#include "view.h" |
| 23 |
|
| 24 |
int verby = 0; /* verbose mode? */ |
| 25 |
|
| 26 |
const char *reinhfn = "reinhartb.cal"; |
| 27 |
const char *shirchiufn = "disk2square.cal"; |
| 28 |
const char *kfullfn = "klems_full.cal"; |
| 29 |
const char *khalffn = "klems_half.cal"; |
| 30 |
const char *kquarterfn = "klems_quarter.cal"; |
| 31 |
const char *ciefn = "cieskyscan.cal"; |
| 32 |
|
| 33 |
const char *sigerr[NSIG]; /* signal error messages */ |
| 34 |
|
| 35 |
int inpfmt = 'a'; /* input format */ |
| 36 |
int outfmt = 'f'; /* output format */ |
| 37 |
|
| 38 |
int report_intvl = 0; /* reporting interval (seconds) */ |
| 39 |
|
| 40 |
RcontribSimulManager myRCmanager; // global rcontrib simulation manager |
| 41 |
|
| 42 |
#define PARAMSNAME "rfluxmtx" /* string indicating parameters */ |
| 43 |
|
| 44 |
/* surface type IDs */ |
| 45 |
#define ST_NONE 0 |
| 46 |
#define ST_POLY 1 |
| 47 |
#define ST_RING 2 |
| 48 |
#define ST_SOURCE 3 |
| 49 |
/* surface structure */ |
| 50 |
struct SURF { |
| 51 |
SURF *next; /* next surface in list */ |
| 52 |
void *priv; /* private data (malloc'ed) */ |
| 53 |
char sname[32]; /* surface name */ |
| 54 |
FVECT snrm; /* surface normal */ |
| 55 |
double area; /* surface area / proj. solid angle */ |
| 56 |
short styp; /* surface type */ |
| 57 |
short nfargs; /* number of real arguments */ |
| 58 |
double farg[1]; /* real values (extends struct) */ |
| 59 |
}; |
| 60 |
/* triangle */ |
| 61 |
struct PTRI { |
| 62 |
double afrac; /* fraction of total area */ |
| 63 |
short vndx[3]; /* vertex indices */ |
| 64 |
}; |
| 65 |
/* triangulated polygon */ |
| 66 |
struct POLYTRIS { |
| 67 |
FVECT uva[2]; /* tangent axes */ |
| 68 |
int ntris; /* number of triangles */ |
| 69 |
PTRI tri[1]; /* triangle array (extends struct) */ |
| 70 |
}; |
| 71 |
/* sender/receiver parameters */ |
| 72 |
struct PARAMS { |
| 73 |
char sign; /* '-' for axis reversal */ |
| 74 |
char hemis[31]; /* hemispherical sampling spec. */ |
| 75 |
int hsiz; /* hemisphere basis size */ |
| 76 |
int nsurfs; /* number of surfaces */ |
| 77 |
SURF *slist; /* list of surfaces */ |
| 78 |
FVECT vup; /* up vector (zero if unset) */ |
| 79 |
FVECT nrm; /* average normal direction */ |
| 80 |
FVECT udir, vdir; /* tangent axes */ |
| 81 |
char outfn[256]; /* output file name (receiver) */ |
| 82 |
int (*sample_basis)(PARAMS *p, int b, FVECT orig_dir[]); |
| 83 |
}; |
| 84 |
|
| 85 |
static PARAMS curparams; |
| 86 |
static char curmod[MAXSTR]; |
| 87 |
static char newparams[1024]; |
| 88 |
|
| 89 |
typedef int SURFSAMP(FVECT, SURF *, double); |
| 90 |
|
| 91 |
static SURFSAMP ssamp_bad, ssamp_poly, ssamp_ring; |
| 92 |
|
| 93 |
static SURFSAMP *orig_in_surf[4] = { |
| 94 |
ssamp_bad, ssamp_poly, ssamp_ring, ssamp_bad |
| 95 |
}; |
| 96 |
|
| 97 |
VIEW ourview = STDVIEW; // view parameters (if set) |
| 98 |
double dstrpix = 0; // pixel jitter |
| 99 |
double dblur = 0; // depth-of-field |
| 100 |
|
| 101 |
/* Clear parameter set */ |
| 102 |
static void |
| 103 |
clear_params(PARAMS *p, bool reset_only = true) |
| 104 |
{ |
| 105 |
while (p->slist != NULL) { |
| 106 |
SURF *sdel = p->slist; |
| 107 |
p->slist = sdel->next; |
| 108 |
if (sdel->priv != NULL) |
| 109 |
free(sdel->priv); |
| 110 |
free(sdel); |
| 111 |
} |
| 112 |
if (reset_only) { |
| 113 |
p->nsurfs = 0; |
| 114 |
p->slist = NULL; |
| 115 |
memset(p->nrm, 0, sizeof(FVECT)); |
| 116 |
memset(p->vup, 0, sizeof(FVECT)); |
| 117 |
} else |
| 118 |
memset(p, 0, sizeof(PARAMS)); |
| 119 |
} |
| 120 |
|
| 121 |
/* Get surface type from name */ |
| 122 |
static int |
| 123 |
surf_type(const char *otype) |
| 124 |
{ |
| 125 |
if (!strcmp(otype, "polygon")) |
| 126 |
return(ST_POLY); |
| 127 |
if (!strcmp(otype, "ring")) |
| 128 |
return(ST_RING); |
| 129 |
if (!strcmp(otype, "source")) |
| 130 |
return(ST_SOURCE); |
| 131 |
return(ST_NONE); |
| 132 |
} |
| 133 |
|
| 134 |
/* Add arguments to oconv command */ |
| 135 |
static char * |
| 136 |
oconv_command(int ac, char *av[]) |
| 137 |
{ |
| 138 |
static char oconvbuf[4096] = "!oconv -f "; |
| 139 |
char *cp = oconvbuf + 10; |
| 140 |
char *recv = *av++; |
| 141 |
|
| 142 |
if (ac-- <= 0) |
| 143 |
return(NULL); |
| 144 |
if (erract[WARNING].pf == NULL) { /* warnings off? */ |
| 145 |
strcpy(cp, "-w "); |
| 146 |
cp += 3; |
| 147 |
} |
| 148 |
while (ac-- > 0) { /* copy each argument */ |
| 149 |
int len = strlen(*av); |
| 150 |
if (cp+len+4 >= oconvbuf+sizeof(oconvbuf)) |
| 151 |
goto overrun; |
| 152 |
if (matchany(*av, SPECIALS)) { |
| 153 |
*cp++ = QUOTCHAR; |
| 154 |
strcpy(cp, *av++); |
| 155 |
cp += len; |
| 156 |
*cp++ = QUOTCHAR; |
| 157 |
} else { |
| 158 |
strcpy(cp, *av++); |
| 159 |
cp += len; |
| 160 |
} |
| 161 |
*cp++ = ' '; |
| 162 |
} |
| 163 |
/* receiver goes last */ |
| 164 |
if (matchany(recv, SPECIALS)) { |
| 165 |
*cp++ = QUOTCHAR; |
| 166 |
while (*recv) { |
| 167 |
if (cp >= oconvbuf+(sizeof(oconvbuf)-3)) |
| 168 |
goto overrun; |
| 169 |
*cp++ = *recv++; |
| 170 |
} |
| 171 |
*cp++ = QUOTCHAR; |
| 172 |
*cp = '\0'; |
| 173 |
} else |
| 174 |
strcpy(cp, recv); |
| 175 |
return(oconvbuf); |
| 176 |
overrun: |
| 177 |
error(USER, "too many file arguments!"); |
| 178 |
return(NULL); /* pro forma return */ |
| 179 |
} |
| 180 |
|
| 181 |
/* Get normalized direction vector from string specification */ |
| 182 |
static int |
| 183 |
get_direction(FVECT dv, const char *s) |
| 184 |
{ |
| 185 |
int sign = 1; |
| 186 |
int axis = 0; |
| 187 |
|
| 188 |
memset(dv, 0, sizeof(FVECT)); |
| 189 |
nextchar: |
| 190 |
switch (*s) { |
| 191 |
case '+': |
| 192 |
++s; |
| 193 |
goto nextchar; |
| 194 |
case '-': |
| 195 |
sign = -sign; |
| 196 |
++s; |
| 197 |
goto nextchar; |
| 198 |
case 'z': |
| 199 |
case 'Z': |
| 200 |
++axis; |
| 201 |
case 'y': |
| 202 |
case 'Y': |
| 203 |
++axis; |
| 204 |
case 'x': |
| 205 |
case 'X': |
| 206 |
dv[axis] = sign; |
| 207 |
return(!s[1] | isspace(s[1])); |
| 208 |
default: |
| 209 |
break; |
| 210 |
} |
| 211 |
#ifdef SMLFLT |
| 212 |
if (sscanf(s, "%f,%f,%f", &dv[0], &dv[1], &dv[2]) != 3) |
| 213 |
#else |
| 214 |
if (sscanf(s, "%lf,%lf,%lf", &dv[0], &dv[1], &dv[2]) != 3) |
| 215 |
#endif |
| 216 |
return(0); |
| 217 |
dv[0] *= (RREAL)sign; |
| 218 |
return(normalize(dv) > 0); |
| 219 |
} |
| 220 |
|
| 221 |
/* Parse program parameters (directives) */ |
| 222 |
static int |
| 223 |
parse_params(PARAMS *p, char *pargs) |
| 224 |
{ |
| 225 |
char *cp = pargs; |
| 226 |
int nparams = 0; |
| 227 |
int quot; |
| 228 |
int i; |
| 229 |
|
| 230 |
for ( ; ; ) { |
| 231 |
switch (*cp++) { |
| 232 |
case 'h': |
| 233 |
if (*cp++ != '=') |
| 234 |
break; |
| 235 |
if ((*cp == '+') | (*cp == '-')) |
| 236 |
p->sign = *cp++; |
| 237 |
else |
| 238 |
p->sign = '+'; |
| 239 |
p->hsiz = 0; |
| 240 |
i = 0; |
| 241 |
while (*cp && !isspace(*cp)) { |
| 242 |
if (isdigit(*cp)) |
| 243 |
p->hsiz = 10*p->hsiz + *cp - '0'; |
| 244 |
p->hemis[i++] = *cp++; |
| 245 |
} |
| 246 |
if (!i) |
| 247 |
break; |
| 248 |
p->hemis[i] = '\0'; |
| 249 |
p->hsiz += !p->hsiz; |
| 250 |
++nparams; |
| 251 |
continue; |
| 252 |
case 'u': |
| 253 |
if (*cp++ != '=') |
| 254 |
break; |
| 255 |
if (!get_direction(p->vup, cp)) |
| 256 |
break; |
| 257 |
while (*cp && !isspace(*cp++)) |
| 258 |
; |
| 259 |
++nparams; |
| 260 |
continue; |
| 261 |
case 'o': |
| 262 |
if (*cp++ != '=') |
| 263 |
break; |
| 264 |
quot = 0; |
| 265 |
if ((*cp == '"') | (*cp == '\'')) |
| 266 |
quot = *cp++; |
| 267 |
i = 0; |
| 268 |
while (*cp && (quot ? (*cp != quot) : !isspace(*cp))) { |
| 269 |
i++; cp++; |
| 270 |
} |
| 271 |
if (!i) |
| 272 |
break; |
| 273 |
if (!*cp) { |
| 274 |
if (quot) |
| 275 |
break; |
| 276 |
cp[1] = '\0'; |
| 277 |
} |
| 278 |
*cp = '\0'; |
| 279 |
strlcpy(p->outfn, cp-i, sizeof(p->outfn)); |
| 280 |
*cp++ = quot ? quot : ' '; |
| 281 |
++nparams; |
| 282 |
continue; |
| 283 |
case ' ': |
| 284 |
case '\t': |
| 285 |
case '\r': |
| 286 |
case '\n': |
| 287 |
continue; |
| 288 |
case '\0': |
| 289 |
return(nparams); |
| 290 |
default: |
| 291 |
break; |
| 292 |
} |
| 293 |
break; |
| 294 |
} |
| 295 |
sprintf(errmsg, "bad parameter string: %s", pargs); |
| 296 |
error(USER, errmsg); |
| 297 |
return(-1); /* pro forma return */ |
| 298 |
} |
| 299 |
|
| 300 |
/* Add receiver modifier and associated parameters */ |
| 301 |
static void |
| 302 |
finish_receiver() |
| 303 |
{ |
| 304 |
bool uniform = false; |
| 305 |
const char *calfn = NULL; |
| 306 |
char binv[64] = "0"; |
| 307 |
char params[128] = ""; |
| 308 |
const char *binf = NULL; |
| 309 |
const char *nbins = NULL; |
| 310 |
/* check arguments */ |
| 311 |
if (!curmod[0]) |
| 312 |
error(USER, "missing receiver surface"); |
| 313 |
if (!curparams.outfn[0]) |
| 314 |
error(USER, "missing output file for receiver"); |
| 315 |
if (!curparams.hemis[0]) |
| 316 |
error(USER, "missing hemisphere sampling type"); |
| 317 |
if (normalize(curparams.nrm) == 0) |
| 318 |
error(USER, "undefined normal for hemisphere sampling"); |
| 319 |
if (normalize(curparams.vup) == 0) { |
| 320 |
if (fabs(curparams.nrm[2]) < .7) |
| 321 |
curparams.vup[2] = 1; |
| 322 |
else |
| 323 |
curparams.vup[1] = 1; |
| 324 |
} |
| 325 |
/* determine sample type/bin */ |
| 326 |
if ((tolower(curparams.hemis[0]) == 'u') | (curparams.hemis[0] == '1')) { |
| 327 |
if (curparams.slist->styp != ST_SOURCE) |
| 328 |
sprintf(binv, "if(-Dx*%g-Dy*%g-Dz*%g,0,-1)", |
| 329 |
curparams.nrm[0], curparams.nrm[1], curparams.nrm[2]); |
| 330 |
uniform = true; /* uniform sampling -- one bin */ |
| 331 |
} else if (tolower(curparams.hemis[0]) == 's' && |
| 332 |
tolower(curparams.hemis[1]) == 'c') { |
| 333 |
/* assign parameters */ |
| 334 |
if (curparams.hsiz <= 1) |
| 335 |
error(USER, "missing size for Shirley-Chiu sampling"); |
| 336 |
calfn = shirchiufn; shirchiufn = NULL; |
| 337 |
sprintf(params, "SCdim=%d,rNx=%g,rNy=%g,rNz=%g,Ux=%g,Uy=%g,Uz=%g,RHS=%c1", |
| 338 |
curparams.hsiz, |
| 339 |
curparams.nrm[0], curparams.nrm[1], curparams.nrm[2], |
| 340 |
curparams.vup[0], curparams.vup[1], curparams.vup[2], |
| 341 |
curparams.sign); |
| 342 |
strcpy(binv, "scbin"); |
| 343 |
nbins = "SCdim*SCdim"; |
| 344 |
} else if ((tolower(curparams.hemis[0]) == 'r') | |
| 345 |
(tolower(curparams.hemis[0]) == 't')) { |
| 346 |
calfn = reinhfn; reinhfn = NULL; |
| 347 |
sprintf(params, "MF=%d,rNx=%g,rNy=%g,rNz=%g,Ux=%g,Uy=%g,Uz=%g,RHS=%c1", |
| 348 |
curparams.hsiz, |
| 349 |
curparams.nrm[0], curparams.nrm[1], curparams.nrm[2], |
| 350 |
curparams.vup[0], curparams.vup[1], curparams.vup[2], |
| 351 |
curparams.sign); |
| 352 |
strcpy(binv, "rbin"); |
| 353 |
nbins = "Nrbins"; |
| 354 |
} else if (tolower(curparams.hemis[0]) == 'k' && |
| 355 |
!curparams.hemis[1] | |
| 356 |
(tolower(curparams.hemis[1]) == 'f') | |
| 357 |
(curparams.hemis[1] == '1')) { |
| 358 |
calfn = kfullfn; kfullfn = NULL; |
| 359 |
binf = "kbin"; |
| 360 |
nbins = "Nkbins"; |
| 361 |
} else if (tolower(curparams.hemis[0]) == 'k' && |
| 362 |
(tolower(curparams.hemis[1]) == 'h') | |
| 363 |
(curparams.hemis[1] == '2')) { |
| 364 |
calfn = khalffn; khalffn = NULL; |
| 365 |
binf = "khbin"; |
| 366 |
nbins = "Nkhbins"; |
| 367 |
} else if (tolower(curparams.hemis[0]) == 'k' && |
| 368 |
(tolower(curparams.hemis[1]) == 'q') | |
| 369 |
(curparams.hemis[1] == '4')) { |
| 370 |
calfn = kquarterfn; kquarterfn = NULL; |
| 371 |
binf = "kqbin"; |
| 372 |
nbins = "Nkqbins"; |
| 373 |
} else if (!strcasecmp(curparams.hemis, "cie")) { |
| 374 |
calfn = ciefn; ciefn = NULL; |
| 375 |
sprintf(params, "rNx=%g,rNy=%g,rNz=%g,Ux=%g,Uy=%g,Uz=%g,RHS=%c1", |
| 376 |
curparams.nrm[0], curparams.nrm[1], curparams.nrm[2], |
| 377 |
curparams.vup[0], curparams.vup[1], curparams.vup[2], |
| 378 |
curparams.sign); |
| 379 |
strcpy(binv, "cbin"); |
| 380 |
nbins = "Ncbins"; |
| 381 |
} else { |
| 382 |
sprintf(errmsg, "unrecognized hemisphere sampling: h=%s", |
| 383 |
curparams.hemis); |
| 384 |
error(USER, errmsg); |
| 385 |
} |
| 386 |
if (tolower(curparams.hemis[0]) == 'k') { |
| 387 |
sprintf(params, "RHS=%c1", curparams.sign); |
| 388 |
} |
| 389 |
if (!uniform) |
| 390 |
for (SURF *sp = curparams.slist; sp != NULL; sp = sp->next) |
| 391 |
if (sp->styp == ST_SOURCE && fabs(sp->area - PI) > 1e-3) { |
| 392 |
sprintf(errmsg, "source '%s' must be 180-degrees", |
| 393 |
sp->sname); |
| 394 |
error(USER, errmsg); |
| 395 |
} |
| 396 |
if (binf != NULL) { /* complete bin function? */ |
| 397 |
sprintf(binv, "%s(%g,%g,%g,%g,%g,%g)", binf, |
| 398 |
curparams.nrm[0], curparams.nrm[1], curparams.nrm[2], |
| 399 |
curparams.vup[0], curparams.vup[1], curparams.vup[2]); |
| 400 |
} |
| 401 |
if (calfn != NULL) /* load cal file if needed */ |
| 402 |
loadfunc(const_cast<char *>(calfn)); |
| 403 |
if (params[0]) /* set parameters if any */ |
| 404 |
set_eparams(params); |
| 405 |
// add modifier to rcontrib object |
| 406 |
if (!myRCmanager.AddModifier(curmod, curparams.outfn, params, binv, |
| 407 |
nbins==NULL ? 1 : int(eval(const_cast<char *>(nbins)) + .5))) |
| 408 |
error(INTERNAL, "AddModifier() call failed"); |
| 409 |
|
| 410 |
clear_params(&curparams, true); /* clear for next receiver */ |
| 411 |
curmod[0] = '\0'; |
| 412 |
} |
| 413 |
|
| 414 |
/* Make randomly oriented tangent plane axes for given normal direction */ |
| 415 |
static void |
| 416 |
make_axes(FVECT uva[2], const FVECT nrm) |
| 417 |
{ |
| 418 |
int i; |
| 419 |
|
| 420 |
if (!getperpendicular(uva[0], nrm, 1)) |
| 421 |
error(USER, "bad surface normal in make_axes()"); |
| 422 |
VCROSS(uva[1], nrm, uva[0]); |
| 423 |
} |
| 424 |
|
| 425 |
/* Illegal sender surfaces end up here */ |
| 426 |
static int |
| 427 |
ssamp_bad(FVECT orig, SURF *sp, double x) |
| 428 |
{ |
| 429 |
sprintf(errmsg, "illegal sender surface '%s'", sp->sname); |
| 430 |
error(INTERNAL, errmsg); |
| 431 |
return(0); |
| 432 |
} |
| 433 |
|
| 434 |
/* Generate origin on ring surface from uniform random variable */ |
| 435 |
static int |
| 436 |
ssamp_ring(FVECT orig, SURF *sp, double x) |
| 437 |
{ |
| 438 |
FVECT *uva = (FVECT *)sp->priv; |
| 439 |
double samp2[2]; |
| 440 |
double uv[2]; |
| 441 |
int i; |
| 442 |
|
| 443 |
if (uva == NULL) { /* need tangent axes */ |
| 444 |
uva = (FVECT *)malloc(sizeof(FVECT)*2); |
| 445 |
if (uva == NULL) { |
| 446 |
error(SYSTEM, "out of memory in ssamp_ring()"); |
| 447 |
return(0); |
| 448 |
} |
| 449 |
make_axes(uva, sp->snrm); |
| 450 |
sp->priv = uva; |
| 451 |
} |
| 452 |
SDmultiSamp(samp2, 2, x); |
| 453 |
samp2[0] = sqrt(samp2[0]*sp->area*(1./PI) + sp->farg[6]*sp->farg[6]); |
| 454 |
samp2[1] *= 2.*PI; |
| 455 |
uv[0] = samp2[0]*tcos(samp2[1]); |
| 456 |
uv[1] = samp2[0]*tsin(samp2[1]); |
| 457 |
for (i = 3; i--; ) |
| 458 |
orig[i] = sp->farg[i] + uv[0]*uva[0][i] + uv[1]*uva[1][i]; |
| 459 |
return(1); |
| 460 |
} |
| 461 |
|
| 462 |
/* Add triangle to polygon's list (call-back function) */ |
| 463 |
static int |
| 464 |
add_triangle(const Vert2_list *tp, int a, int b, int c) |
| 465 |
{ |
| 466 |
POLYTRIS *ptp = (POLYTRIS *)tp->p; |
| 467 |
PTRI *trip = ptp->tri + ptp->ntris++; |
| 468 |
|
| 469 |
trip->vndx[0] = a; |
| 470 |
trip->vndx[1] = b; |
| 471 |
trip->vndx[2] = c; |
| 472 |
return(1); |
| 473 |
} |
| 474 |
|
| 475 |
/* Generate origin on polygon surface from uniform random variable */ |
| 476 |
static int |
| 477 |
ssamp_poly(FVECT orig, SURF *sp, double x) |
| 478 |
{ |
| 479 |
POLYTRIS *ptp = (POLYTRIS *)sp->priv; |
| 480 |
double samp2[2]; |
| 481 |
double *v0, *v1, *v2; |
| 482 |
int i; |
| 483 |
|
| 484 |
if (ptp == NULL) { /* need to triangulate */ |
| 485 |
ptp = (POLYTRIS *)malloc(sizeof(POLYTRIS) + |
| 486 |
sizeof(PTRI)*(sp->nfargs/3 - 3)); |
| 487 |
if (ptp == NULL) |
| 488 |
goto memerr; |
| 489 |
if (sp->nfargs == 3) { /* simple case */ |
| 490 |
ptp->ntris = 1; |
| 491 |
ptp->tri[0].vndx[0] = 0; |
| 492 |
ptp->tri[0].vndx[1] = 1; |
| 493 |
ptp->tri[0].vndx[2] = 2; |
| 494 |
ptp->tri[0].afrac = 1; |
| 495 |
} else { |
| 496 |
Vert2_list *v2l = polyAlloc(sp->nfargs/3); |
| 497 |
if (v2l == NULL) |
| 498 |
goto memerr; |
| 499 |
make_axes(ptp->uva, sp->snrm); |
| 500 |
for (i = v2l->nv; i--; ) { |
| 501 |
v2l->v[i].mX = DOT(sp->farg+3*i, ptp->uva[0]); |
| 502 |
v2l->v[i].mY = DOT(sp->farg+3*i, ptp->uva[1]); |
| 503 |
} |
| 504 |
ptp->ntris = 0; |
| 505 |
v2l->p = ptp; |
| 506 |
if (!polyTriangulate(v2l, add_triangle)) { |
| 507 |
sprintf(errmsg, "cannot triangulate polygon '%s'", |
| 508 |
sp->sname); |
| 509 |
error(USER, errmsg); |
| 510 |
return(0); |
| 511 |
} |
| 512 |
for (i = ptp->ntris; i--; ) { |
| 513 |
int a = ptp->tri[i].vndx[0]; |
| 514 |
int b = ptp->tri[i].vndx[1]; |
| 515 |
int c = ptp->tri[i].vndx[2]; |
| 516 |
ptp->tri[i].afrac = |
| 517 |
(v2l->v[a].mX*v2l->v[b].mY - |
| 518 |
v2l->v[b].mX*v2l->v[a].mY + |
| 519 |
v2l->v[b].mX*v2l->v[c].mY - |
| 520 |
v2l->v[c].mX*v2l->v[b].mY + |
| 521 |
v2l->v[c].mX*v2l->v[a].mY - |
| 522 |
v2l->v[a].mX*v2l->v[c].mY) / |
| 523 |
(2.*sp->area); |
| 524 |
} |
| 525 |
polyFree(v2l); |
| 526 |
} |
| 527 |
sp->priv = ptp; |
| 528 |
} |
| 529 |
/* pick triangle by partial area */ |
| 530 |
for (i = 0; i < ptp->ntris-1 && x > ptp->tri[i].afrac; i++) |
| 531 |
x -= ptp->tri[i].afrac; |
| 532 |
SDmultiSamp(samp2, 2, x/ptp->tri[i].afrac); |
| 533 |
samp2[0] *= samp2[1] = sqrt(samp2[1]); |
| 534 |
samp2[1] = 1. - samp2[1]; |
| 535 |
v0 = sp->farg + 3*ptp->tri[i].vndx[0]; |
| 536 |
v1 = sp->farg + 3*ptp->tri[i].vndx[1]; |
| 537 |
v2 = sp->farg + 3*ptp->tri[i].vndx[2]; |
| 538 |
for (i = 3; i--; ) |
| 539 |
orig[i] = v0[i] + samp2[0]*(v1[i] - v0[i]) |
| 540 |
+ samp2[1]*(v2[i] - v0[i]) ; |
| 541 |
return(1); |
| 542 |
memerr: |
| 543 |
error(SYSTEM, "out of memory in ssamp_poly"); |
| 544 |
return(0); |
| 545 |
} |
| 546 |
|
| 547 |
/* Compute sample origin based on projected areas of sender subsurfaces */ |
| 548 |
static int |
| 549 |
sample_origin(PARAMS *p, FVECT orig, const FVECT rdir, double x) |
| 550 |
{ |
| 551 |
static double *projsa; |
| 552 |
static int nall; |
| 553 |
double tarea = 0; |
| 554 |
int i; |
| 555 |
SURF *sp; |
| 556 |
/* special case for lone surface */ |
| 557 |
if (p->nsurfs == 1) { |
| 558 |
sp = p->slist; |
| 559 |
if (DOT(sp->snrm, rdir) >= FTINY) { |
| 560 |
sprintf(errmsg, "sample behind sender '%s'", sp->sname); |
| 561 |
error(INTERNAL, errmsg); |
| 562 |
return(0); |
| 563 |
} |
| 564 |
return((*orig_in_surf[sp->styp])(orig, sp, x)); |
| 565 |
} |
| 566 |
if (p->nsurfs > nall) { /* (re)allocate surface area cache */ |
| 567 |
if (projsa) free(projsa); |
| 568 |
projsa = (double *)malloc(sizeof(double)*p->nsurfs); |
| 569 |
if (projsa == NULL) |
| 570 |
error(SYSTEM, "out of memory in sample_origin()"); |
| 571 |
nall = p->nsurfs; |
| 572 |
} |
| 573 |
/* compute projected areas */ |
| 574 |
for (i = 0, sp = p->slist; sp != NULL; i++, sp = sp->next) { |
| 575 |
projsa[i] = -DOT(sp->snrm, rdir) * sp->area; |
| 576 |
tarea += projsa[i] *= (double)(projsa[i] > 0); |
| 577 |
} |
| 578 |
if (tarea < FTINY*FTINY) { /* wrong side of sender? */ |
| 579 |
error(INTERNAL, "sample behind all sender elements!"); |
| 580 |
return(0); |
| 581 |
} |
| 582 |
tarea *= x; /* get surface from list */ |
| 583 |
for (i = 0, sp = p->slist; tarea > projsa[i]; sp = sp->next) |
| 584 |
tarea -= projsa[i++]; |
| 585 |
return((*orig_in_surf[sp->styp])(orig, sp, tarea/projsa[i])); |
| 586 |
} |
| 587 |
|
| 588 |
/* Uniform sample generator */ |
| 589 |
static int |
| 590 |
sample_uniform(PARAMS *p, int b, FVECT orig_dir[]) |
| 591 |
{ |
| 592 |
int n = myRCmanager.accum; |
| 593 |
double samp3[3]; |
| 594 |
FVECT duvw; |
| 595 |
int i; |
| 596 |
|
| 597 |
if (orig_dir == NULL) /* just requesting number of bins? */ |
| 598 |
return(1); |
| 599 |
|
| 600 |
while (n--) { /* stratified hemisphere sampling */ |
| 601 |
SDmultiSamp(samp3, 3, (n+frandom())/myRCmanager.accum); |
| 602 |
square2disk(duvw, samp3[1], samp3[2]); |
| 603 |
duvw[2] = -sqrt(1. - duvw[0]*duvw[0] - duvw[1]*duvw[1]); |
| 604 |
for (i = 3; i--; ) |
| 605 |
orig_dir[1][i] = duvw[0]*p->udir[i] + |
| 606 |
duvw[1]*p->vdir[i] + |
| 607 |
duvw[2]*p->nrm[i] ; |
| 608 |
if (!sample_origin(p, orig_dir[0], orig_dir[1], samp3[0])) |
| 609 |
return(0); |
| 610 |
orig_dir += 2; |
| 611 |
} |
| 612 |
return(1); |
| 613 |
} |
| 614 |
|
| 615 |
/* Shirly-Chiu sample generator */ |
| 616 |
static int |
| 617 |
sample_shirchiu(PARAMS *p, int b, FVECT orig_dir[]) |
| 618 |
{ |
| 619 |
int n = myRCmanager.accum; |
| 620 |
double samp3[3]; |
| 621 |
FVECT duvw; |
| 622 |
int i; |
| 623 |
|
| 624 |
if (orig_dir == NULL) /* just requesting number of bins? */ |
| 625 |
return(p->hsiz*p->hsiz); |
| 626 |
|
| 627 |
while (n--) { /* stratified sampling */ |
| 628 |
SDmultiSamp(samp3, 3, (n+frandom())/myRCmanager.accum); |
| 629 |
square2disk(duvw, (b/p->hsiz + samp3[1])/p->hsiz, |
| 630 |
(b%p->hsiz + samp3[2])/p->hsiz); |
| 631 |
duvw[2] = sqrt(1. - duvw[0]*duvw[0] - duvw[1]*duvw[1]); |
| 632 |
for (i = 3; i--; ) |
| 633 |
orig_dir[1][i] = -duvw[0]*p->udir[i] - |
| 634 |
duvw[1]*p->vdir[i] - |
| 635 |
duvw[2]*p->nrm[i] ; |
| 636 |
if (!sample_origin(p, orig_dir[0], orig_dir[1], samp3[0])) |
| 637 |
return(0); |
| 638 |
orig_dir += 2; |
| 639 |
} |
| 640 |
return(1); |
| 641 |
} |
| 642 |
|
| 643 |
/* Reinhart/Tregenza sample generator */ |
| 644 |
static int |
| 645 |
sample_reinhart(PARAMS *p, int b, FVECT orig_dir[]) |
| 646 |
{ |
| 647 |
#define T_NALT 7 |
| 648 |
static const int tnaz[T_NALT] = {30, 30, 24, 24, 18, 12, 6}; |
| 649 |
const int RowMax = T_NALT*p->hsiz + 1; |
| 650 |
const double RAH = (.5*PI)/(RowMax-.5); |
| 651 |
#define rnaz(r) (r >= RowMax-1 ? 1 : p->hsiz*tnaz[r/p->hsiz]) |
| 652 |
int n = myRCmanager.accum; |
| 653 |
int row, col; |
| 654 |
double samp3[3]; |
| 655 |
double alt, azi; |
| 656 |
double duvw[3]; |
| 657 |
int i; |
| 658 |
|
| 659 |
if (orig_dir == NULL) { /* just requesting number of bins? */ |
| 660 |
n = 0; |
| 661 |
for (row = RowMax; row--; ) n += rnaz(row); |
| 662 |
return(n); |
| 663 |
} |
| 664 |
row = 0; /* identify row & column */ |
| 665 |
col = b; |
| 666 |
while (col >= rnaz(row)) { |
| 667 |
col -= rnaz(row); |
| 668 |
++row; |
| 669 |
} |
| 670 |
while (n--) { /* stratified sampling */ |
| 671 |
SDmultiSamp(samp3, 3, (n+frandom())/myRCmanager.accum); |
| 672 |
if (row >= RowMax-1) /* avoid crowding at zenith */ |
| 673 |
samp3[1] *= samp3[1]; |
| 674 |
alt = (row+samp3[1])*RAH; |
| 675 |
azi = (2.*PI)*(col+samp3[2]-.5)/rnaz(row); |
| 676 |
duvw[2] = cos(alt); /* measured from horizon */ |
| 677 |
duvw[0] = tsin(azi)*duvw[2]; |
| 678 |
duvw[1] = -tcos(azi)*duvw[2]; |
| 679 |
duvw[2] = sqrt(1. - duvw[2]*duvw[2]); |
| 680 |
for (i = 3; i--; ) |
| 681 |
orig_dir[1][i] = -duvw[0]*p->udir[i] - |
| 682 |
duvw[1]*p->vdir[i] - |
| 683 |
duvw[2]*p->nrm[i] ; |
| 684 |
if (!sample_origin(p, orig_dir[0], orig_dir[1], samp3[0])) |
| 685 |
return(0); |
| 686 |
orig_dir += 2; |
| 687 |
} |
| 688 |
return(1); |
| 689 |
#undef rnaz |
| 690 |
#undef T_NALT |
| 691 |
} |
| 692 |
|
| 693 |
/* Klems sample generator */ |
| 694 |
static int |
| 695 |
sample_klems(PARAMS *p, int b, FVECT orig_dir[]) |
| 696 |
{ |
| 697 |
static const char bname[4][20] = { |
| 698 |
"LBNL/Klems Full", |
| 699 |
"LBNL/Klems Half", |
| 700 |
"INTERNAL ERROR", |
| 701 |
"LBNL/Klems Quarter" |
| 702 |
}; |
| 703 |
static ANGLE_BASIS *kbasis[4]; |
| 704 |
const int bi = p->hemis[1] - '1'; |
| 705 |
int n = myRCmanager.accum; |
| 706 |
double samp2[2]; |
| 707 |
double duvw[3]; |
| 708 |
int i; |
| 709 |
|
| 710 |
if (!kbasis[bi]) { /* need to get basis, first */ |
| 711 |
for (i = 4; i--; ) |
| 712 |
if (!strcasecmp(abase_list[i].name, bname[bi])) { |
| 713 |
kbasis[bi] = &abase_list[i]; |
| 714 |
break; |
| 715 |
} |
| 716 |
if (i < 0) { |
| 717 |
sprintf(errmsg, "unknown hemisphere basis '%s'", |
| 718 |
bname[bi]); |
| 719 |
error(USER, errmsg); |
| 720 |
return(0); |
| 721 |
} |
| 722 |
} |
| 723 |
if (orig_dir == NULL) /* just requesting number of bins? */ |
| 724 |
return(kbasis[bi]->nangles); |
| 725 |
|
| 726 |
while (n--) { /* stratified sampling */ |
| 727 |
SDmultiSamp(samp2, 2, (n+frandom())/myRCmanager.accum); |
| 728 |
if (!fo_getvec(duvw, b+samp2[1], kbasis[bi])) |
| 729 |
return(0); |
| 730 |
for (i = 3; i--; ) |
| 731 |
orig_dir[1][i] = -duvw[0]*p->udir[i] - |
| 732 |
duvw[1]*p->vdir[i] - |
| 733 |
duvw[2]*p->nrm[i] ; |
| 734 |
if (!sample_origin(p, orig_dir[0], orig_dir[1], samp2[0])) |
| 735 |
return(0); |
| 736 |
orig_dir += 2; |
| 737 |
} |
| 738 |
return(1); |
| 739 |
} |
| 740 |
|
| 741 |
/* Prepare hemisphere basis sampler that will send rays to rcontrib */ |
| 742 |
static int |
| 743 |
prepare_sampler(PARAMS *p) |
| 744 |
{ |
| 745 |
if (p->slist == NULL) { /* missing sample surface! */ |
| 746 |
error(USER, "no sender surface"); |
| 747 |
return(-1); |
| 748 |
} |
| 749 |
/* misplaced output file spec. */ |
| 750 |
if (p->outfn[0]) { |
| 751 |
sprintf(errmsg, "ignoring output file in sender ('%s')", |
| 752 |
p->outfn); |
| 753 |
error(WARNING, errmsg); |
| 754 |
} |
| 755 |
/* check/set basis hemisphere */ |
| 756 |
if (!p->hemis[0]) { |
| 757 |
error(USER, "missing sender sampling type"); |
| 758 |
return(-1); |
| 759 |
} |
| 760 |
if (normalize(p->nrm) == 0) { |
| 761 |
error(USER, "undefined normal for sender sampling"); |
| 762 |
return(-1); |
| 763 |
} |
| 764 |
if (normalize(p->vup) == 0) { |
| 765 |
if (fabs(p->nrm[2]) < .7) |
| 766 |
p->vup[2] = 1; |
| 767 |
else |
| 768 |
p->vup[1] = 1; |
| 769 |
} |
| 770 |
fcross(p->udir, p->vup, p->nrm); |
| 771 |
if (normalize(p->udir) == 0) { |
| 772 |
error(USER, "up vector coincides with sender normal"); |
| 773 |
return(-1); |
| 774 |
} |
| 775 |
fcross(p->vdir, p->nrm, p->udir); |
| 776 |
if (p->sign == '-') { /* left-handed coordinate system? */ |
| 777 |
p->udir[0] *= -1.; |
| 778 |
p->udir[1] *= -1.; |
| 779 |
p->udir[2] *= -1.; |
| 780 |
} |
| 781 |
if ((tolower(p->hemis[0]) == 'u') | (p->hemis[0] == '1')) |
| 782 |
p->sample_basis = sample_uniform; |
| 783 |
else if (tolower(p->hemis[0]) == 's' && |
| 784 |
tolower(p->hemis[1]) == 'c') |
| 785 |
p->sample_basis = sample_shirchiu; |
| 786 |
else if ((tolower(p->hemis[0]) == 'r') | |
| 787 |
(tolower(p->hemis[0]) == 't')) |
| 788 |
p->sample_basis = sample_reinhart; |
| 789 |
else if (tolower(p->hemis[0]) == 'k') { |
| 790 |
switch (p->hemis[1]) { |
| 791 |
case '1': |
| 792 |
case '2': |
| 793 |
case '4': |
| 794 |
break; |
| 795 |
case 'f': |
| 796 |
case 'F': |
| 797 |
case '\0': |
| 798 |
p->hemis[1] = '1'; |
| 799 |
break; |
| 800 |
case 'h': |
| 801 |
case 'H': |
| 802 |
p->hemis[1] = '2'; |
| 803 |
break; |
| 804 |
case 'q': |
| 805 |
case 'Q': |
| 806 |
p->hemis[1] = '4'; |
| 807 |
break; |
| 808 |
default: |
| 809 |
goto unrecognized; |
| 810 |
} |
| 811 |
p->hemis[2] = '\0'; |
| 812 |
p->sample_basis = sample_klems; |
| 813 |
} else |
| 814 |
goto unrecognized; |
| 815 |
/* return number of bins */ |
| 816 |
return((*p->sample_basis)(p,0,NULL)); |
| 817 |
unrecognized: |
| 818 |
sprintf(errmsg, "unrecognized sender sampling: h=%s", p->hemis); |
| 819 |
error(USER, errmsg); |
| 820 |
return(-1); |
| 821 |
} |
| 822 |
|
| 823 |
/* Compute normal and area for polygon */ |
| 824 |
static int |
| 825 |
finish_polygon(SURF *p) |
| 826 |
{ |
| 827 |
const int nv = p->nfargs / 3; |
| 828 |
FVECT e1, e2, vc; |
| 829 |
int i; |
| 830 |
|
| 831 |
memset(p->snrm, 0, sizeof(FVECT)); |
| 832 |
VSUB(e1, p->farg+3, p->farg); |
| 833 |
for (i = 2; i < nv; i++) { |
| 834 |
VSUB(e2, p->farg+3*i, p->farg); |
| 835 |
VCROSS(vc, e1, e2); |
| 836 |
p->snrm[0] += vc[0]; |
| 837 |
p->snrm[1] += vc[1]; |
| 838 |
p->snrm[2] += vc[2]; |
| 839 |
VCOPY(e1, e2); |
| 840 |
} |
| 841 |
p->area = normalize(p->snrm)*0.5; |
| 842 |
return(p->area > FTINY*FTINY); |
| 843 |
} |
| 844 |
|
| 845 |
/* Add a surface to our current parameters */ |
| 846 |
static void |
| 847 |
add_surface(int st, const char *oname, FILE *fp) |
| 848 |
{ |
| 849 |
SURF *snew; |
| 850 |
int n; |
| 851 |
/* get floating-point arguments */ |
| 852 |
if (!fscanf(fp, "%d", &n)) return; |
| 853 |
while (n-- > 0) fscanf(fp, "%*s"); |
| 854 |
if (!fscanf(fp, "%d", &n)) return; |
| 855 |
while (n-- > 0) fscanf(fp, "%*d"); |
| 856 |
if (!fscanf(fp, "%d", &n) || n <= 0) return; |
| 857 |
snew = (SURF *)malloc(sizeof(SURF) + sizeof(double)*(n-1)); |
| 858 |
if (snew == NULL) |
| 859 |
error(SYSTEM, "out of memory in add_surface()"); |
| 860 |
strncpy(snew->sname, oname, sizeof(snew->sname)-1); |
| 861 |
snew->sname[sizeof(snew->sname)-1] = '\0'; |
| 862 |
snew->styp = st; |
| 863 |
snew->priv = NULL; |
| 864 |
snew->nfargs = n; |
| 865 |
for (n = 0; n < snew->nfargs; n++) |
| 866 |
if (fscanf(fp, "%lf", &snew->farg[n]) != 1) { |
| 867 |
sprintf(errmsg, "error reading arguments for '%s'", |
| 868 |
oname); |
| 869 |
error(USER, errmsg); |
| 870 |
} |
| 871 |
switch (st) { |
| 872 |
case ST_RING: |
| 873 |
if (snew->nfargs != 8) |
| 874 |
goto badcount; |
| 875 |
VCOPY(snew->snrm, snew->farg+3); |
| 876 |
if (normalize(snew->snrm) == 0) |
| 877 |
goto badnorm; |
| 878 |
if (snew->farg[7] < snew->farg[6]) { |
| 879 |
double t = snew->farg[7]; |
| 880 |
snew->farg[7] = snew->farg[6]; |
| 881 |
snew->farg[6] = t; |
| 882 |
} |
| 883 |
snew->area = PI*(snew->farg[7]*snew->farg[7] - |
| 884 |
snew->farg[6]*snew->farg[6]); |
| 885 |
break; |
| 886 |
case ST_POLY: |
| 887 |
if (snew->nfargs < 9 || snew->nfargs % 3) |
| 888 |
goto badcount; |
| 889 |
finish_polygon(snew); |
| 890 |
break; |
| 891 |
case ST_SOURCE: |
| 892 |
if (snew->nfargs != 4) |
| 893 |
goto badcount; |
| 894 |
for (n = 3; n--; ) /* need to reverse "normal" */ |
| 895 |
snew->snrm[n] = -snew->farg[n]; |
| 896 |
if (normalize(snew->snrm) == 0) |
| 897 |
goto badnorm; |
| 898 |
snew->area = sin((PI/180./2.)*snew->farg[3]); |
| 899 |
snew->area *= PI*snew->area; |
| 900 |
break; |
| 901 |
} |
| 902 |
if (snew->area <= FTINY*FTINY) { |
| 903 |
sprintf(errmsg, "zero area for surface '%s'", oname); |
| 904 |
error(WARNING, errmsg); |
| 905 |
free(snew); |
| 906 |
return; |
| 907 |
} |
| 908 |
VSUM(curparams.nrm, curparams.nrm, snew->snrm, snew->area); |
| 909 |
snew->next = curparams.slist; |
| 910 |
curparams.slist = snew; |
| 911 |
curparams.nsurfs++; |
| 912 |
return; |
| 913 |
badcount: |
| 914 |
sprintf(errmsg, "bad argument count for surface element '%s'", oname); |
| 915 |
error(USER, errmsg); |
| 916 |
badnorm: |
| 917 |
sprintf(errmsg, "bad orientation for surface element '%s'", oname); |
| 918 |
error(USER, errmsg); |
| 919 |
} |
| 920 |
|
| 921 |
/* Parse a receiver object (look for modifiers to add) */ |
| 922 |
static int |
| 923 |
add_recv_object(FILE *fp) |
| 924 |
{ |
| 925 |
int st; |
| 926 |
char thismod[128], otype[32], oname[128]; |
| 927 |
int n; |
| 928 |
|
| 929 |
if (fscanf(fp, "%s %s %s", thismod, otype, oname) != 3) |
| 930 |
return(0); /* must have hit EOF! */ |
| 931 |
if (!strcmp(otype, "alias")) { |
| 932 |
fscanf(fp, "%*s"); /* skip alias */ |
| 933 |
return(0); |
| 934 |
} |
| 935 |
/* is it a new receiver? */ |
| 936 |
if ((st = surf_type(otype)) != ST_NONE) { |
| 937 |
if (strcmp(thismod, curmod)) { |
| 938 |
if (curmod[0]) /* output last receiver? */ |
| 939 |
finish_receiver(); |
| 940 |
parse_params(&curparams, newparams); |
| 941 |
newparams[0] = '\0'; |
| 942 |
strcpy(curmod, thismod); |
| 943 |
} |
| 944 |
add_surface(st, oname, fp); /* read & store surface */ |
| 945 |
return(1); |
| 946 |
} |
| 947 |
/* else skip arguments */ |
| 948 |
if (!fscanf(fp, "%d", &n)) return(0); |
| 949 |
while (n-- > 0) fscanf(fp, "%*s"); |
| 950 |
if (!fscanf(fp, "%d", &n)) return(0); |
| 951 |
while (n-- > 0) fscanf(fp, "%*d"); |
| 952 |
if (!fscanf(fp, "%d", &n)) return(0); |
| 953 |
while (n-- > 0) fscanf(fp, "%*f"); |
| 954 |
return(0); |
| 955 |
} |
| 956 |
|
| 957 |
/* Parse a sender object */ |
| 958 |
static int |
| 959 |
add_send_object(FILE *fp) |
| 960 |
{ |
| 961 |
int st; |
| 962 |
char thismod[128], otype[32], oname[128]; |
| 963 |
int n; |
| 964 |
|
| 965 |
if (fscanf(fp, "%s %s %s", thismod, otype, oname) != 3) |
| 966 |
return(0); /* must have hit EOF! */ |
| 967 |
if (!strcmp(otype, "alias")) { |
| 968 |
fscanf(fp, "%*s"); /* skip alias */ |
| 969 |
return(0); |
| 970 |
} |
| 971 |
/* is it a new surface? */ |
| 972 |
if ((st = surf_type(otype)) != ST_NONE) { |
| 973 |
if (st == ST_SOURCE) { |
| 974 |
error(USER, "cannot use source as a sender"); |
| 975 |
return(-1); |
| 976 |
} |
| 977 |
if (strcmp(thismod, curmod)) { |
| 978 |
if (curmod[0]) |
| 979 |
error(WARNING, "multiple modifiers in sender"); |
| 980 |
strcpy(curmod, thismod); |
| 981 |
} |
| 982 |
parse_params(&curparams, newparams); |
| 983 |
newparams[0] = '\0'; |
| 984 |
add_surface(st, oname, fp); /* read & store surface */ |
| 985 |
return(0); |
| 986 |
} |
| 987 |
/* else skip arguments */ |
| 988 |
if (!fscanf(fp, "%d", &n)) return(0); |
| 989 |
while (n-- > 0) fscanf(fp, "%*s"); |
| 990 |
if (!fscanf(fp, "%d", &n)) return(0); |
| 991 |
while (n-- > 0) fscanf(fp, "%*d"); |
| 992 |
if (!fscanf(fp, "%d", &n)) return(0); |
| 993 |
while (n-- > 0) fscanf(fp, "%*f"); |
| 994 |
return(0); |
| 995 |
} |
| 996 |
|
| 997 |
/* Load a Radiance scene using the given callback function for objects */ |
| 998 |
static int |
| 999 |
load_scene(const char *inspec, int (*ocb)(FILE *)) |
| 1000 |
{ |
| 1001 |
int rv = 0; |
| 1002 |
char inpbuf[1024]; |
| 1003 |
FILE *fp; |
| 1004 |
int c; |
| 1005 |
|
| 1006 |
if (*inspec == '!') |
| 1007 |
fp = popen(inspec+1, "r"); |
| 1008 |
else |
| 1009 |
fp = fopen(inspec, "r"); |
| 1010 |
if (fp == NULL) { |
| 1011 |
sprintf(errmsg, "cannot load '%s'", inspec); |
| 1012 |
error(SYSTEM, errmsg); |
| 1013 |
return(-1); |
| 1014 |
} |
| 1015 |
while ((c = getc(fp)) != EOF) { /* load sender/receiver data */ |
| 1016 |
if (isspace(c)) /* skip leading white space */ |
| 1017 |
continue; |
| 1018 |
if (c == '!') { /* read from a new command */ |
| 1019 |
inpbuf[0] = c; |
| 1020 |
if (fgetline(inpbuf+1, sizeof(inpbuf)-1, fp) != NULL) { |
| 1021 |
if ((c = load_scene(inpbuf, ocb)) < 0) |
| 1022 |
return(c); |
| 1023 |
rv += c; |
| 1024 |
} |
| 1025 |
continue; |
| 1026 |
} |
| 1027 |
if (c == '#') { /* parameters/comment */ |
| 1028 |
if ((c = getc(fp)) == EOF) |
| 1029 |
break; |
| 1030 |
if (c == '@' && fscanf(fp, "%s", inpbuf) == 1 && |
| 1031 |
(!strcmp(inpbuf, PARAMSNAME) || |
| 1032 |
!strcmp(inpbuf, progname))) { |
| 1033 |
if (fgets(inpbuf, sizeof(inpbuf), fp) != NULL) |
| 1034 |
strlcat(newparams, inpbuf, sizeof(newparams)); |
| 1035 |
continue; |
| 1036 |
} |
| 1037 |
while (c != '\n' && (c = getc(fp)) != EOF) |
| 1038 |
; /* ...skipping comment */ |
| 1039 |
continue; |
| 1040 |
} |
| 1041 |
ungetc(c, fp); /* else check object for receiver */ |
| 1042 |
c = (*ocb)(fp); |
| 1043 |
if (c < 0) |
| 1044 |
return(c); |
| 1045 |
rv += c; |
| 1046 |
} |
| 1047 |
/* close our input stream */ |
| 1048 |
c = (*inspec == '!') ? pclose(fp) : fclose(fp); |
| 1049 |
if (c != 0) { |
| 1050 |
sprintf(errmsg, "error loading '%s'", inspec); |
| 1051 |
error(SYSTEM, errmsg); |
| 1052 |
return(-1); |
| 1053 |
} |
| 1054 |
return(rv); |
| 1055 |
} |
| 1056 |
|
| 1057 |
void |
| 1058 |
wputs( /* warning output function */ |
| 1059 |
const char *s |
| 1060 |
) |
| 1061 |
{ |
| 1062 |
if (erract[WARNING].pf == NULL) |
| 1063 |
return; |
| 1064 |
int lasterrno = errno; |
| 1065 |
eputs(s); |
| 1066 |
errno = lasterrno; |
| 1067 |
} |
| 1068 |
|
| 1069 |
void |
| 1070 |
eputs( /* put string to stderr */ |
| 1071 |
const char *s |
| 1072 |
) |
| 1073 |
{ |
| 1074 |
static int midline = 0; |
| 1075 |
|
| 1076 |
if (!*s) |
| 1077 |
return; |
| 1078 |
if (!midline++) { |
| 1079 |
fputs(progname, stderr); |
| 1080 |
fputs(": ", stderr); |
| 1081 |
} |
| 1082 |
fputs(s, stderr); |
| 1083 |
if (s[strlen(s)-1] == '\n') { |
| 1084 |
fflush(stderr); |
| 1085 |
midline = 0; |
| 1086 |
} |
| 1087 |
} |
| 1088 |
|
| 1089 |
/* set input/output format */ |
| 1090 |
static void |
| 1091 |
setformat(const char *fmt) |
| 1092 |
{ |
| 1093 |
switch (fmt[0]) { |
| 1094 |
case 'f': |
| 1095 |
case 'd': |
| 1096 |
SET_FILE_BINARY(stdin); |
| 1097 |
/* fall through */ |
| 1098 |
case 'a': |
| 1099 |
inpfmt = fmt[0]; |
| 1100 |
break; |
| 1101 |
case 'c': |
| 1102 |
if (fmt[1]) |
| 1103 |
goto fmterr; |
| 1104 |
outfmt = fmt[0]; // special case for output-only |
| 1105 |
return; |
| 1106 |
default: |
| 1107 |
goto fmterr; |
| 1108 |
} |
| 1109 |
switch (fmt[1]) { |
| 1110 |
case '\0': |
| 1111 |
if (inpfmt == 'a') |
| 1112 |
goto fmterr; |
| 1113 |
outfmt = inpfmt; |
| 1114 |
return; |
| 1115 |
case 'f': |
| 1116 |
case 'd': |
| 1117 |
case 'c': |
| 1118 |
outfmt = fmt[1]; |
| 1119 |
break; |
| 1120 |
default: |
| 1121 |
goto fmterr; |
| 1122 |
} |
| 1123 |
if (!fmt[2]) |
| 1124 |
return; |
| 1125 |
fmterr: |
| 1126 |
sprintf(errmsg, "unsupported i/o format: -f%s", fmt); |
| 1127 |
error(USER, errmsg); |
| 1128 |
} |
| 1129 |
|
| 1130 |
static inline double |
| 1131 |
pixjitter() |
| 1132 |
{ |
| 1133 |
return(0.5 + dstrpix*(frandom()-0.5)); |
| 1134 |
} |
| 1135 |
|
| 1136 |
// Compute a set of view rays for the given pixel accumulator |
| 1137 |
bool |
| 1138 |
viewRayBundle(FVECT orig_dir[], int x, int y) |
| 1139 |
{ |
| 1140 |
for (int n = 0; n < myRCmanager.accum; orig_dir += 2, n++) { |
| 1141 |
const double d = viewray(orig_dir[0], orig_dir[1], &ourview, |
| 1142 |
(x+pixjitter())/myRCmanager.xres, |
| 1143 |
(y+pixjitter())/myRCmanager.yres); |
| 1144 |
// off-view sample? |
| 1145 |
if (d < -FTINY || !jitteraperture(orig_dir[0], orig_dir[1], |
| 1146 |
&ourview, dblur)) |
| 1147 |
memset(orig_dir+1, 0, sizeof(FVECT)); |
| 1148 |
else // else record distance to aft plane |
| 1149 |
for (int i = 3*(d > FTINY); i--; ) |
| 1150 |
orig_dir[1][i] *= d; |
| 1151 |
// accumulating identical samples? |
| 1152 |
if (!n && (dstrpix <= 0.05) & (dblur <= FTINY)) { |
| 1153 |
while (++n < myRCmanager.accum) |
| 1154 |
memcpy(orig_dir[2*n], orig_dir[0], sizeof(FVECT)*2); |
| 1155 |
break; |
| 1156 |
} |
| 1157 |
} |
| 1158 |
return true; |
| 1159 |
} |
| 1160 |
|
| 1161 |
// skip specified number of bytes, return false if EOF |
| 1162 |
static bool |
| 1163 |
skipBytes(size_t n2skip) |
| 1164 |
{ |
| 1165 |
while (n2skip--) |
| 1166 |
if (getchar() == EOF) |
| 1167 |
return false; |
| 1168 |
return true; |
| 1169 |
} |
| 1170 |
|
| 1171 |
// skip specified number of whitespace-separated words, return false if EOF |
| 1172 |
static bool |
| 1173 |
skipWords(int n2skip) |
| 1174 |
{ |
| 1175 |
int c; |
| 1176 |
|
| 1177 |
while (n2skip--) { |
| 1178 |
do { |
| 1179 |
c = getchar(); |
| 1180 |
} while (isspace(c)); |
| 1181 |
do { |
| 1182 |
if (c == EOF) return false; |
| 1183 |
c = getchar(); |
| 1184 |
} while (!isspace(c)); |
| 1185 |
} |
| 1186 |
return true; |
| 1187 |
} |
| 1188 |
|
| 1189 |
// Skip a set of input rays |
| 1190 |
bool |
| 1191 |
skipRayBundle() |
| 1192 |
{ |
| 1193 |
switch (inpfmt) { |
| 1194 |
case 'd': |
| 1195 |
return skipBytes(sizeof(double)*6*myRCmanager.accum); |
| 1196 |
case 'f': |
| 1197 |
return skipBytes(sizeof(float)*6*myRCmanager.accum); |
| 1198 |
case 'a': |
| 1199 |
return skipWords(6*myRCmanager.accum); |
| 1200 |
} |
| 1201 |
error(INTERNAL, "unsupported input format"); |
| 1202 |
return false; |
| 1203 |
} |
| 1204 |
|
| 1205 |
// Load a set of rays for accumulation (do not normalize directions) |
| 1206 |
bool |
| 1207 |
getRayBundle(FVECT orig_dir[]) |
| 1208 |
{ |
| 1209 |
// read directly if possible |
| 1210 |
if (inpfmt == "_fd"[sizeof(RREAL)/sizeof(float)]) |
| 1211 |
return (getbinary(orig_dir[0], sizeof(FVECT)*2, |
| 1212 |
myRCmanager.accum, stdin) == myRCmanager.accum); |
| 1213 |
|
| 1214 |
for (int n = 0; n < myRCmanager.accum; orig_dir += 2, n++) |
| 1215 |
switch (inpfmt) { |
| 1216 |
#ifdef SMLFLT |
| 1217 |
case 'd': { double dvin[6]; |
| 1218 |
if (getbinary(dvin, sizeof(dvin), 1, stdin) != 1) |
| 1219 |
return false; |
| 1220 |
for (int i = 6; i--; ) orig_dir[0][i] = dvin[i]; |
| 1221 |
} break; |
| 1222 |
#else |
| 1223 |
case 'f': { float fvin[6]; |
| 1224 |
if (getbinary(fvin, sizeof(fvin), 1, stdin) != 1) |
| 1225 |
return false; |
| 1226 |
for (int i = 6; i--; ) orig_dir[0][i] = fvin[i]; |
| 1227 |
} break; |
| 1228 |
#endif |
| 1229 |
case 'a': |
| 1230 |
if (scanf(FVFORMAT, &orig_dir[0][0], &orig_dir[0][1], |
| 1231 |
&orig_dir[0][2]) != 3) |
| 1232 |
return false; |
| 1233 |
if (scanf(FVFORMAT, &orig_dir[1][0], &orig_dir[1][1], |
| 1234 |
&orig_dir[1][2]) != 3) |
| 1235 |
return false; |
| 1236 |
break; |
| 1237 |
default: |
| 1238 |
error(INTERNAL, "unsupported input format"); |
| 1239 |
} |
| 1240 |
|
| 1241 |
return true; |
| 1242 |
} |
| 1243 |
|
| 1244 |
/* Set default options */ |
| 1245 |
static void |
| 1246 |
default_options() |
| 1247 |
{ |
| 1248 |
rand_samp = 1; |
| 1249 |
dstrsrc = 0.9; |
| 1250 |
directrelay = 3; |
| 1251 |
vspretest = 512; |
| 1252 |
srcsizerat = .2; |
| 1253 |
specthresh = .02; |
| 1254 |
specjitter = 1.; |
| 1255 |
maxdepth = -10; |
| 1256 |
minweight = 2e-3; |
| 1257 |
ambres = 256; |
| 1258 |
ambdiv = 350; |
| 1259 |
ambounce = 1; |
| 1260 |
} |
| 1261 |
|
| 1262 |
/* Set overriding options */ |
| 1263 |
static void |
| 1264 |
override_options() |
| 1265 |
{ |
| 1266 |
shadthresh = 0; |
| 1267 |
ambssamp = 0; |
| 1268 |
ambacc = 0; |
| 1269 |
} |
| 1270 |
|
| 1271 |
void |
| 1272 |
onsig( /* fatal signal */ |
| 1273 |
int signo |
| 1274 |
) |
| 1275 |
{ |
| 1276 |
static int gotsig = 0; |
| 1277 |
|
| 1278 |
if (gotsig++) /* two signals and we're gone! */ |
| 1279 |
_exit(signo); |
| 1280 |
|
| 1281 |
#ifdef SIGALRM |
| 1282 |
alarm(600); /* allow 10 minutes to clean up */ |
| 1283 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
| 1284 |
#endif |
| 1285 |
eputs("signal - "); |
| 1286 |
eputs(sigerr[signo]); |
| 1287 |
eputs("\n"); |
| 1288 |
quit(3); |
| 1289 |
} |
| 1290 |
|
| 1291 |
void |
| 1292 |
sigdie( /* set fatal signal */ |
| 1293 |
int signo, |
| 1294 |
const char *msg |
| 1295 |
) |
| 1296 |
{ |
| 1297 |
if (signal(signo, onsig) == SIG_IGN) |
| 1298 |
signal(signo, SIG_IGN); |
| 1299 |
sigerr[signo] = msg; |
| 1300 |
} |
| 1301 |
|
| 1302 |
// report progress |
| 1303 |
void |
| 1304 |
report_progress(bool force = false) |
| 1305 |
{ |
| 1306 |
static time_t last_report=0, tstart=time(0); |
| 1307 |
time_t tnow; |
| 1308 |
|
| 1309 |
if (!force & (report_intvl <= 0)) |
| 1310 |
return; |
| 1311 |
|
| 1312 |
tnow = time(0); |
| 1313 |
if (!force & (tnow < last_report + report_intvl)) |
| 1314 |
return; |
| 1315 |
|
| 1316 |
sprintf(errmsg, "%.2f%% done after %.3f hours\n", |
| 1317 |
100. * myRCmanager.GetRowFinished() / |
| 1318 |
(double)myRCmanager.GetRowMax(), |
| 1319 |
(tnow - tstart)*(1./3600.)); |
| 1320 |
eputs(errmsg); |
| 1321 |
last_report = tnow; |
| 1322 |
} |
| 1323 |
|
| 1324 |
/* Run rfluxmtx equivalent without leaning on r[x]contrib */ |
| 1325 |
int |
| 1326 |
main(int argc, char *argv[]) |
| 1327 |
{ |
| 1328 |
#define check(ol,al) if (argv[a][ol] || \ |
| 1329 |
badarg(argc-a-1,argv+a+1,al)) \ |
| 1330 |
goto userr |
| 1331 |
#define check_bool(olen,var) switch (argv[a][olen]) { \ |
| 1332 |
case '\0': var = !var; break; \ |
| 1333 |
case 'y': case 'Y': case 't': case 'T': \ |
| 1334 |
case '+': case '1': var = true; break; \ |
| 1335 |
case 'n': case 'N': case 'f': case 'F': \ |
| 1336 |
case '-': case '0': var = false; break; \ |
| 1337 |
default: goto userr; } |
| 1338 |
bool force_open = false; |
| 1339 |
bool recover = false; |
| 1340 |
bool gotView = false; |
| 1341 |
double pixaspect = 1.; |
| 1342 |
int nproc = 1; |
| 1343 |
int nout = 0; |
| 1344 |
char *outfn = NULL; |
| 1345 |
FVECT *rayarr = NULL; |
| 1346 |
const char *sendfn = ""; |
| 1347 |
PARAMS sendparams; |
| 1348 |
int rval; |
| 1349 |
int a, i; |
| 1350 |
/* set global progname */ |
| 1351 |
fixargv0(argv[0]); |
| 1352 |
// just asking version? |
| 1353 |
if (argc == 2 && !strcmp(argv[1], "-version")) { |
| 1354 |
puts(VersionID); |
| 1355 |
quit(0); |
| 1356 |
} |
| 1357 |
initfunc(); /* initialize calcomp routines first */ |
| 1358 |
calcontext(RCCONTEXT); |
| 1359 |
/* set rcontrib defaults */ |
| 1360 |
default_options(); |
| 1361 |
/* get command-line options */ |
| 1362 |
for (a = 1; a < argc; a++) { |
| 1363 |
/* check for argument expansion */ |
| 1364 |
while ((rval = expandarg(&argc, &argv, a)) > 0) |
| 1365 |
; |
| 1366 |
if (rval < 0) { |
| 1367 |
sprintf(errmsg, "cannot expand '%s'", argv[a]); |
| 1368 |
error(SYSTEM, errmsg); |
| 1369 |
} |
| 1370 |
if (argv[a][0] != '-' || !argv[a][1]) |
| 1371 |
break; // break from options |
| 1372 |
rval = getrenderopt(argc-a, argv+a); |
| 1373 |
if (rval >= 0) { |
| 1374 |
a += rval; |
| 1375 |
continue; |
| 1376 |
} |
| 1377 |
rval = getviewopt(&ourview, argc-a, argv+a); |
| 1378 |
if (rval >= 0) { |
| 1379 |
a += rval; |
| 1380 |
gotView = true; |
| 1381 |
continue; |
| 1382 |
} |
| 1383 |
switch (argv[a][1]) { /* !! Keep consistent !! */ |
| 1384 |
case 'W': /* verbose mode */ |
| 1385 |
check_bool(2,verby); |
| 1386 |
break; |
| 1387 |
case 'v': // view file |
| 1388 |
if (argv[a][2] != 'f') |
| 1389 |
goto userr; |
| 1390 |
check(3,"s"); |
| 1391 |
rval = viewfile(argv[++a], &ourview, NULL); |
| 1392 |
if (rval < 0) { |
| 1393 |
sprintf(errmsg, "cannot open view file '%s'", argv[a]); |
| 1394 |
error(SYSTEM, errmsg); |
| 1395 |
} else if (!rval) { |
| 1396 |
sprintf(errmsg, "bad view file '%s'", argv[a]); |
| 1397 |
error(USER, errmsg); |
| 1398 |
} |
| 1399 |
gotView = true; |
| 1400 |
break; |
| 1401 |
case 'p': // -pj, -pd, or -pa |
| 1402 |
switch (argv[a][2]) { |
| 1403 |
case 'j': /* jitter */ |
| 1404 |
check(3,"f"); |
| 1405 |
dstrpix = atof(argv[++a]); |
| 1406 |
break; |
| 1407 |
case 'd': /* aperture */ |
| 1408 |
check(3,"f"); |
| 1409 |
dblur = atof(argv[++a]); |
| 1410 |
break; |
| 1411 |
case 'a': /* aspect */ |
| 1412 |
check(3,"f"); |
| 1413 |
pixaspect = atof(argv[++a]); |
| 1414 |
break; |
| 1415 |
default: |
| 1416 |
goto userr; |
| 1417 |
} |
| 1418 |
break; |
| 1419 |
case 'n': /* number of processes */ |
| 1420 |
check(2,"i"); |
| 1421 |
nproc = atoi(argv[++a]); |
| 1422 |
if (nproc < 0 && (nproc += RadSimulManager::GetNCores()) <= 0) |
| 1423 |
nproc = 1; |
| 1424 |
break; |
| 1425 |
case 'V': /* output contributions? */ |
| 1426 |
rval = myRCmanager.HasFlag(RCcontrib); |
| 1427 |
check_bool(2,rval); |
| 1428 |
myRCmanager.SetFlag(RCcontrib, rval); |
| 1429 |
break; |
| 1430 |
case 'x': /* x resolution */ |
| 1431 |
check(2,"i"); |
| 1432 |
myRCmanager.xres = atoi(argv[++a]); |
| 1433 |
break; |
| 1434 |
case 'y': /* y resolution */ |
| 1435 |
check(2,"i"); |
| 1436 |
myRCmanager.yres = atoi(argv[++a]); |
| 1437 |
break; |
| 1438 |
case 'w': /* warnings on/off */ |
| 1439 |
rval = (erract[WARNING].pf != NULL); |
| 1440 |
check_bool(2,rval); |
| 1441 |
if (rval) erract[WARNING].pf = wputs; |
| 1442 |
else erract[WARNING].pf = NULL; |
| 1443 |
break; |
| 1444 |
case 'l': /* limit distance */ |
| 1445 |
if (argv[a][2] != 'd') |
| 1446 |
goto userr; |
| 1447 |
rval = myRCmanager.HasFlag(RTlimDist); |
| 1448 |
check_bool(3,rval); |
| 1449 |
myRCmanager.SetFlag(RTlimDist, rval); |
| 1450 |
break; |
| 1451 |
case 'I': /* immed. irradiance */ |
| 1452 |
rval = myRCmanager.HasFlag(RTimmIrrad); |
| 1453 |
check_bool(2,rval); |
| 1454 |
myRCmanager.SetFlag(RTimmIrrad, rval); |
| 1455 |
break; |
| 1456 |
case 'f': /* format or force overwrite */ |
| 1457 |
if (argv[a][2] == 'o') { |
| 1458 |
check_bool(3,force_open); |
| 1459 |
break; |
| 1460 |
} |
| 1461 |
setformat(argv[a]+2); |
| 1462 |
break; |
| 1463 |
case 'r': // recover flag |
| 1464 |
check_bool(2,recover); |
| 1465 |
break; |
| 1466 |
case 'o': /* output file */ |
| 1467 |
check(2,"s"); |
| 1468 |
outfn = argv[++a]; |
| 1469 |
break; |
| 1470 |
case 'c': /* sample count */ |
| 1471 |
check(2,"i"); |
| 1472 |
myRCmanager.accum = atoi(argv[++a]); |
| 1473 |
break; |
| 1474 |
case 't': /* reporting interval */ |
| 1475 |
check(2,"i"); |
| 1476 |
report_intvl = atoi(argv[++a]); |
| 1477 |
break; |
| 1478 |
default: /* anything else is verbotten */ |
| 1479 |
goto userr; |
| 1480 |
} |
| 1481 |
} |
| 1482 |
if (a > argc-1) |
| 1483 |
goto userr; |
| 1484 |
|
| 1485 |
override_options(); /* override critical options */ |
| 1486 |
|
| 1487 |
if (!gotView) { |
| 1488 |
sendfn = argv[a++]; |
| 1489 |
if (a > argc-1) |
| 1490 |
goto userr; |
| 1491 |
} else if (argv[a][0] == '-') |
| 1492 |
error(USER, "view specification incompatible with pass-through mode"); |
| 1493 |
/* assign sender & receiver inputs */ |
| 1494 |
if (gotView) { // picture output? |
| 1495 |
const char * err = setview(&ourview); |
| 1496 |
if (err != NULL) |
| 1497 |
error(USER, err); |
| 1498 |
if (myRCmanager.HasFlag(RTimmIrrad)) |
| 1499 |
error(USER, "-I+ not allowed in view generation mode"); |
| 1500 |
normaspect(viewaspect(&ourview), &pixaspect, |
| 1501 |
&myRCmanager.xres, &myRCmanager.yres); |
| 1502 |
if ((myRCmanager.xres <= 0) | (myRCmanager.yres <= 0)) |
| 1503 |
error(USER, "missing or illegal -x and -y resolution"); |
| 1504 |
myRCmanager.SetFlag(RTlimDist, ourview.vaft > FTINY); |
| 1505 |
if (myRCmanager.accum <= 0) |
| 1506 |
myRCmanager.accum = 1; |
| 1507 |
} else if (sendfn[0] == '-') { // pass-through mode? |
| 1508 |
if (sendfn[1]) goto userr; |
| 1509 |
sendfn = NULL; |
| 1510 |
if (myRCmanager.accum <= 0) |
| 1511 |
myRCmanager.accum = 1; |
| 1512 |
} else { // else surface sampling |
| 1513 |
if (do_irrad | myRCmanager.HasFlag(RTimmIrrad)) |
| 1514 |
error(USER, "-i+, -I+ not allowed in surface-sampling mode"); |
| 1515 |
myRCmanager.SetFlag(RTlimDist, false); |
| 1516 |
if (load_scene(sendfn, add_send_object) < 0) |
| 1517 |
quit(1); |
| 1518 |
sendparams = curparams; // save sender params & clear current |
| 1519 |
memset(&curparams, 0, sizeof(PARAMS)); |
| 1520 |
curmod[0] = '\0'; |
| 1521 |
myRCmanager.yres = prepare_sampler(&sendparams); |
| 1522 |
if (myRCmanager.yres <= 0) |
| 1523 |
quit(1); |
| 1524 |
myRCmanager.xres = 0; |
| 1525 |
if (myRCmanager.accum <= 1) |
| 1526 |
myRCmanager.accum = 10000; |
| 1527 |
} |
| 1528 |
if (outfn != NULL) // saved from -o option above? |
| 1529 |
strlcpy(curparams.outfn, outfn, sizeof(curparams.outfn)); |
| 1530 |
// get ready to rock... |
| 1531 |
if (setspectrsamp(CNDX, WLPART) < 0) |
| 1532 |
error(USER, "unsupported spectral sampling"); |
| 1533 |
/* set up signal handling */ |
| 1534 |
sigdie(SIGINT, "Interrupt"); |
| 1535 |
#ifdef SIGHUP |
| 1536 |
sigdie(SIGHUP, "Hangup"); |
| 1537 |
#endif |
| 1538 |
sigdie(SIGTERM, "Terminate"); |
| 1539 |
#ifdef SIGPIPE |
| 1540 |
sigdie(SIGPIPE, "Broken pipe"); |
| 1541 |
#endif |
| 1542 |
#ifdef SIGALRM |
| 1543 |
sigdie(SIGALRM, "Alarm clock"); |
| 1544 |
#endif |
| 1545 |
#ifdef SIGXCPU |
| 1546 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
| 1547 |
sigdie(SIGXFSZ, "File size exceeded"); |
| 1548 |
#endif |
| 1549 |
#ifdef NICE |
| 1550 |
nice(NICE); /* lower priority */ |
| 1551 |
#endif |
| 1552 |
rayarr = new FVECT [myRCmanager.accum*2]; |
| 1553 |
// load octree |
| 1554 |
if (!myRCmanager.LoadOctree(oconv_command(argc-a, argv+a))) |
| 1555 |
quit(1); |
| 1556 |
// add to header |
| 1557 |
myRCmanager.AddHeader(argc, argv); |
| 1558 |
{ |
| 1559 |
char buf[128] = "SOFTWARE= "; |
| 1560 |
strcpy(buf+10, VersionID); |
| 1561 |
myRCmanager.AddHeader(buf); |
| 1562 |
if (gotView) { |
| 1563 |
sprintf(buf, "%s%s", VIEWSTR, viewopt(&ourview)); |
| 1564 |
if (strlen(buf) > VIEWSTRL+3) |
| 1565 |
myRCmanager.AddHeader(buf); |
| 1566 |
} |
| 1567 |
if ((pixaspect > .005) & ((pixaspect < .995) | |
| 1568 |
(pixaspect > 1.005))) { |
| 1569 |
sprintf(buf, "%s%f", ASPECTSTR, pixaspect); |
| 1570 |
myRCmanager.AddHeader(buf); |
| 1571 |
} |
| 1572 |
} |
| 1573 |
// set output format |
| 1574 |
myRCmanager.SetDataFormat(outfmt); |
| 1575 |
/* assign receiver modifiers */ |
| 1576 |
if (load_scene(argv[a], add_recv_object) < 0) |
| 1577 |
quit(1); |
| 1578 |
finish_receiver(); // makes final AddModifier() call |
| 1579 |
// prepare output files |
| 1580 |
if (recover) { |
| 1581 |
if (force_open) { |
| 1582 |
error(WARNING, "-r+ mode overrides -fo+"); |
| 1583 |
force_open = false; |
| 1584 |
} |
| 1585 |
myRCmanager.outOp = RCOrecover; |
| 1586 |
} else if (force_open) |
| 1587 |
myRCmanager.outOp = RCOforce; |
| 1588 |
else |
| 1589 |
myRCmanager.outOp = RCOnew; |
| 1590 |
// rval = # rows recovered |
| 1591 |
rval = myRCmanager.PrepOutput(); |
| 1592 |
if (rval < 0) // PrepOutput() failure? |
| 1593 |
error(USER, "issue loading or creating output"); |
| 1594 |
// in case output is complete |
| 1595 |
if (rval >= myRCmanager.GetRowMax()) { |
| 1596 |
error(WARNING, "nothing left to compute"); |
| 1597 |
quit(0); |
| 1598 |
} |
| 1599 |
if (verby) { // get output file count? |
| 1600 |
if (rval > 0) { |
| 1601 |
sprintf(errmsg, "recovered %d of %d rows\n", |
| 1602 |
rval, myRCmanager.GetRowMax()); |
| 1603 |
eputs(errmsg); |
| 1604 |
} |
| 1605 |
for (const RcontribOutput *op = myRCmanager.GetOutput(); |
| 1606 |
op != NULL; op = op->Next()) |
| 1607 |
++nout; |
| 1608 |
} |
| 1609 |
if (nproc > 1) { // set #processes |
| 1610 |
if (verby) { |
| 1611 |
sprintf(errmsg, "starting %d subprocesses\n", nproc); |
| 1612 |
eputs(errmsg); |
| 1613 |
} |
| 1614 |
myRCmanager.SetThreadCount(nproc); |
| 1615 |
} |
| 1616 |
if (gotView) { // picture generation mode? |
| 1617 |
i = myRCmanager.GetRowCount(); |
| 1618 |
if (verby) { |
| 1619 |
sprintf(errmsg, "%s %d %dx%d pictures\n", |
| 1620 |
i ? "completing" : "computing", |
| 1621 |
nout, myRCmanager.xres, myRCmanager.yres); |
| 1622 |
if (myRCmanager.accum > 1) |
| 1623 |
sprintf(errmsg+strlen(errmsg)-1, " with %d samples/pixel\n", |
| 1624 |
myRCmanager.accum); |
| 1625 |
eputs(errmsg); |
| 1626 |
} |
| 1627 |
i /= myRCmanager.xres; |
| 1628 |
int xstart = myRCmanager.GetRowCount() - i*myRCmanager.xres; |
| 1629 |
i = myRCmanager.yres - i; |
| 1630 |
while (i--) { // compute pixel rows from top down |
| 1631 |
for (int x = xstart; x < myRCmanager.xres; x++) { |
| 1632 |
report_progress(); |
| 1633 |
if (!viewRayBundle(rayarr, x, i)) |
| 1634 |
quit(1); |
| 1635 |
if (myRCmanager.ComputeRecord(rayarr) != myRCmanager.accum) |
| 1636 |
error(USER, "failed call to ComputeRecord()"); |
| 1637 |
} |
| 1638 |
xstart = 0; // all rows after first start at x=0 |
| 1639 |
} |
| 1640 |
} else if (sendfn == NULL) { // pass-through mode? |
| 1641 |
#ifdef getc_unlocked |
| 1642 |
flockfile(stdin); |
| 1643 |
#endif |
| 1644 |
// skip completed rows |
| 1645 |
for (i = 0; i < myRCmanager.GetRowCount(); i++) |
| 1646 |
if (!skipRayBundle()) { |
| 1647 |
sprintf(errmsg, "read error from stdin at row %d", i); |
| 1648 |
error(SYSTEM, errmsg); |
| 1649 |
} |
| 1650 |
if (verby) { |
| 1651 |
sprintf(errmsg, "computing %d%s rows in %d matrices\n", |
| 1652 |
myRCmanager.GetRowMax()-i, i ? " remaining" : "", nout); |
| 1653 |
if (myRCmanager.accum > 1) |
| 1654 |
sprintf(errmsg+strlen(errmsg)-1, " with %d samples/row\n", |
| 1655 |
myRCmanager.accum); |
| 1656 |
eputs(errmsg); |
| 1657 |
} |
| 1658 |
for ( ; i < myRCmanager.GetRowMax(); i++) { |
| 1659 |
report_progress(); |
| 1660 |
if (!getRayBundle(rayarr)) { |
| 1661 |
sprintf(errmsg, "read error from stdin at row %d of %d", |
| 1662 |
i, myRCmanager.GetRowMax()); |
| 1663 |
error(USER, errmsg); |
| 1664 |
} |
| 1665 |
if (myRCmanager.ComputeRecord(rayarr) != myRCmanager.accum) |
| 1666 |
error(USER, "failed call to ComputeRecord()"); |
| 1667 |
} |
| 1668 |
} else { // else surface-sampling mode |
| 1669 |
i = myRCmanager.GetRowCount(); |
| 1670 |
if (verby) { |
| 1671 |
sprintf(errmsg, "sampling %d%s directions in %d matrices with %d samples/direction\n", |
| 1672 |
myRCmanager.yres-i, i ? " remaining" : "", |
| 1673 |
nout, myRCmanager.accum); |
| 1674 |
if (sendparams.nsurfs > 1) |
| 1675 |
sprintf(errmsg+strlen(errmsg)-1, " (%d surface elements)\n", sendparams.nsurfs); |
| 1676 |
eputs(errmsg); |
| 1677 |
} |
| 1678 |
for ( ; i < myRCmanager.yres; i++) { |
| 1679 |
report_progress(); |
| 1680 |
if (!(*sendparams.sample_basis)(&sendparams, i, rayarr)) |
| 1681 |
quit(1); |
| 1682 |
if (myRCmanager.ComputeRecord(rayarr) != myRCmanager.accum) |
| 1683 |
error(USER, "failed call to ComputeRecord()"); |
| 1684 |
} |
| 1685 |
clear_params(&sendparams); |
| 1686 |
} |
| 1687 |
delete [] rayarr; |
| 1688 |
myRCmanager.FlushQueue(); |
| 1689 |
report_progress((report_intvl > 0) | verby); |
| 1690 |
quit(0); /* waits on any children */ |
| 1691 |
userr: |
| 1692 |
if (a < argc && argv[a][0] == '-') |
| 1693 |
fprintf(stderr, "%s: unsupported/misplaced option '%s'\n", progname, argv[a]); |
| 1694 |
fprintf(stderr, "Usage: %s [-W] [rcontrib options] { sender.rad | view | - } receiver.rad [-i system.oct] [system.rad ..]\n", |
| 1695 |
progname); |
| 1696 |
quit(1); |
| 1697 |
} |
| 1698 |
|
| 1699 |
/* Exit program */ |
| 1700 |
void |
| 1701 |
quit( |
| 1702 |
int code |
| 1703 |
) |
| 1704 |
{ |
| 1705 |
if (!code) |
| 1706 |
myRCmanager.ClearModifiers(); |
| 1707 |
|
| 1708 |
exit(code); |
| 1709 |
} |
