| 1 |
greg |
2.1 |
#ifndef lint
|
| 2 |
|
|
static const char RCSid[] = "$Id: rfluxmtx.c,v 2.61 2025/10/17 17:24:47 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 "RcontribSimulManager.h"
|
| 16 |
|
|
#include "bsdf.h"
|
| 17 |
|
|
#include "bsdf_m.h"
|
| 18 |
|
|
#include "func.h"
|
| 19 |
|
|
#include "random.h"
|
| 20 |
|
|
#include "triangulate.h"
|
| 21 |
|
|
#include "view.h"
|
| 22 |
|
|
|
| 23 |
|
|
int verby = 0; /* verbose mode? */
|
| 24 |
|
|
|
| 25 |
|
|
const char *reinhfn = "reinhartb.cal";
|
| 26 |
|
|
const char *shirchiufn = "disk2square.cal";
|
| 27 |
|
|
const char *kfullfn = "klems_full.cal";
|
| 28 |
|
|
const char *khalffn = "klems_half.cal";
|
| 29 |
|
|
const char *kquarterfn = "klems_quarter.cal";
|
| 30 |
|
|
const char *ciefn = "cieskyscan.cal";
|
| 31 |
|
|
|
| 32 |
|
|
const char *sigerr[NSIG]; /* signal error messages */
|
| 33 |
|
|
|
| 34 |
|
|
int inpfmt = 'a'; /* input format */
|
| 35 |
|
|
int outfmt = 'f'; /* output format */
|
| 36 |
|
|
|
| 37 |
|
|
RcontribSimulManager myRCmanager; // global rcontrib simulation manager
|
| 38 |
|
|
|
| 39 |
|
|
#define PARAMSNAME "rfluxmtx" /* string indicating parameters */
|
| 40 |
|
|
|
| 41 |
|
|
/* surface type IDs */
|
| 42 |
|
|
#define ST_NONE 0
|
| 43 |
|
|
#define ST_POLY 1
|
| 44 |
|
|
#define ST_RING 2
|
| 45 |
|
|
#define ST_SOURCE 3
|
| 46 |
|
|
/* surface structure */
|
| 47 |
|
|
struct SURF {
|
| 48 |
|
|
SURF *next; /* next surface in list */
|
| 49 |
|
|
void *priv; /* private data (malloc'ed) */
|
| 50 |
|
|
char sname[32]; /* surface name */
|
| 51 |
|
|
FVECT snrm; /* surface normal */
|
| 52 |
|
|
double area; /* surface area / proj. solid angle */
|
| 53 |
|
|
short styp; /* surface type */
|
| 54 |
|
|
short nfargs; /* number of real arguments */
|
| 55 |
|
|
double farg[1]; /* real values (extends struct) */
|
| 56 |
|
|
};
|
| 57 |
|
|
/* triangle */
|
| 58 |
|
|
struct PTRI {
|
| 59 |
|
|
double afrac; /* fraction of total area */
|
| 60 |
|
|
short vndx[3]; /* vertex indices */
|
| 61 |
|
|
};
|
| 62 |
|
|
/* triangulated polygon */
|
| 63 |
|
|
struct POLYTRIS {
|
| 64 |
|
|
FVECT uva[2]; /* tangent axes */
|
| 65 |
|
|
int ntris; /* number of triangles */
|
| 66 |
|
|
PTRI tri[1]; /* triangle array (extends struct) */
|
| 67 |
|
|
};
|
| 68 |
|
|
/* sender/receiver parameters */
|
| 69 |
|
|
struct PARAMS {
|
| 70 |
|
|
char sign; /* '-' for axis reversal */
|
| 71 |
|
|
char hemis[31]; /* hemispherical sampling spec. */
|
| 72 |
|
|
int hsiz; /* hemisphere basis size */
|
| 73 |
|
|
int nsurfs; /* number of surfaces */
|
| 74 |
|
|
SURF *slist; /* list of surfaces */
|
| 75 |
|
|
FVECT vup; /* up vector (zero if unset) */
|
| 76 |
|
|
FVECT nrm; /* average normal direction */
|
| 77 |
|
|
FVECT udir, vdir; /* tangent axes */
|
| 78 |
|
|
char outfn[256]; /* output file name (receiver) */
|
| 79 |
|
|
int (*sample_basis)(PARAMS *p, int b, FVECT orig_dir[]);
|
| 80 |
|
|
};
|
| 81 |
|
|
|
| 82 |
|
|
PARAMS curparams;
|
| 83 |
|
|
char curmod[MAXSTR];
|
| 84 |
|
|
char newparams[1024];
|
| 85 |
|
|
|
| 86 |
|
|
typedef int SURFSAMP(FVECT, SURF *, double);
|
| 87 |
|
|
|
| 88 |
|
|
SURFSAMP ssamp_bad, ssamp_poly, ssamp_ring;
|
| 89 |
|
|
|
| 90 |
|
|
SURFSAMP *orig_in_surf[4] = {
|
| 91 |
|
|
ssamp_bad, ssamp_poly, ssamp_ring, ssamp_bad
|
| 92 |
|
|
};
|
| 93 |
|
|
|
| 94 |
|
|
VIEW ourview = STDVIEW; // view parameters (if set)
|
| 95 |
|
|
double dstrpix = 0; // pixel jitter
|
| 96 |
|
|
double dblur = 0; // depth-of-field
|
| 97 |
|
|
|
| 98 |
|
|
/* Clear parameter set */
|
| 99 |
|
|
void
|
| 100 |
|
|
clear_params(PARAMS *p, bool reset_only = true)
|
| 101 |
|
|
{
|
| 102 |
|
|
while (p->slist != NULL) {
|
| 103 |
|
|
SURF *sdel = p->slist;
|
| 104 |
|
|
p->slist = sdel->next;
|
| 105 |
|
|
if (sdel->priv != NULL)
|
| 106 |
|
|
free(sdel->priv);
|
| 107 |
|
|
free(sdel);
|
| 108 |
|
|
}
|
| 109 |
|
|
if (reset_only) {
|
| 110 |
|
|
p->nsurfs = 0;
|
| 111 |
|
|
p->slist = NULL;
|
| 112 |
|
|
memset(p->nrm, 0, sizeof(FVECT));
|
| 113 |
|
|
memset(p->vup, 0, sizeof(FVECT));
|
| 114 |
|
|
} else
|
| 115 |
|
|
memset(p, 0, sizeof(PARAMS));
|
| 116 |
|
|
}
|
| 117 |
|
|
|
| 118 |
|
|
/* Get surface type from name */
|
| 119 |
|
|
int
|
| 120 |
|
|
surf_type(const char *otype)
|
| 121 |
|
|
{
|
| 122 |
|
|
if (!strcmp(otype, "polygon"))
|
| 123 |
|
|
return(ST_POLY);
|
| 124 |
|
|
if (!strcmp(otype, "ring"))
|
| 125 |
|
|
return(ST_RING);
|
| 126 |
|
|
if (!strcmp(otype, "source"))
|
| 127 |
|
|
return(ST_SOURCE);
|
| 128 |
|
|
return(ST_NONE);
|
| 129 |
|
|
}
|
| 130 |
|
|
|
| 131 |
|
|
/* Add arguments to oconv command */
|
| 132 |
|
|
char *
|
| 133 |
|
|
oconv_command(int ac, char *av[])
|
| 134 |
|
|
{
|
| 135 |
|
|
static char oconvbuf[4096] = "!oconv -f ";
|
| 136 |
|
|
char *cp = oconvbuf + 10;
|
| 137 |
|
|
char *recv = *av++;
|
| 138 |
|
|
|
| 139 |
|
|
if (ac-- <= 0)
|
| 140 |
|
|
return(NULL);
|
| 141 |
|
|
if (erract[WARNING].pf == NULL) { /* warnings off? */
|
| 142 |
|
|
strcpy(cp, "-w ");
|
| 143 |
|
|
cp += 3;
|
| 144 |
|
|
}
|
| 145 |
|
|
while (ac-- > 0) { /* copy each argument */
|
| 146 |
|
|
int len = strlen(*av);
|
| 147 |
|
|
if (cp+len+4 >= oconvbuf+sizeof(oconvbuf))
|
| 148 |
|
|
goto overrun;
|
| 149 |
|
|
if (matchany(*av, SPECIALS)) {
|
| 150 |
|
|
*cp++ = QUOTCHAR;
|
| 151 |
|
|
strcpy(cp, *av++);
|
| 152 |
|
|
cp += len;
|
| 153 |
|
|
*cp++ = QUOTCHAR;
|
| 154 |
|
|
} else {
|
| 155 |
|
|
strcpy(cp, *av++);
|
| 156 |
|
|
cp += len;
|
| 157 |
|
|
}
|
| 158 |
|
|
*cp++ = ' ';
|
| 159 |
|
|
}
|
| 160 |
|
|
/* receiver goes last */
|
| 161 |
|
|
if (matchany(recv, SPECIALS)) {
|
| 162 |
|
|
*cp++ = QUOTCHAR;
|
| 163 |
|
|
while (*recv) {
|
| 164 |
|
|
if (cp >= oconvbuf+(sizeof(oconvbuf)-3))
|
| 165 |
|
|
goto overrun;
|
| 166 |
|
|
*cp++ = *recv++;
|
| 167 |
|
|
}
|
| 168 |
|
|
*cp++ = QUOTCHAR;
|
| 169 |
|
|
*cp = '\0';
|
| 170 |
|
|
} else
|
| 171 |
|
|
strcpy(cp, recv);
|
| 172 |
|
|
return(oconvbuf);
|
| 173 |
|
|
overrun:
|
| 174 |
|
|
error(USER, "too many file arguments!");
|
| 175 |
|
|
return(NULL); /* pro forma return */
|
| 176 |
|
|
}
|
| 177 |
|
|
|
| 178 |
|
|
/* Get normalized direction vector from string specification */
|
| 179 |
|
|
int
|
| 180 |
|
|
get_direction(FVECT dv, const char *s)
|
| 181 |
|
|
{
|
| 182 |
|
|
int sign = 1;
|
| 183 |
|
|
int axis = 0;
|
| 184 |
|
|
|
| 185 |
|
|
memset(dv, 0, sizeof(FVECT));
|
| 186 |
|
|
nextchar:
|
| 187 |
|
|
switch (*s) {
|
| 188 |
|
|
case '+':
|
| 189 |
|
|
++s;
|
| 190 |
|
|
goto nextchar;
|
| 191 |
|
|
case '-':
|
| 192 |
|
|
sign = -sign;
|
| 193 |
|
|
++s;
|
| 194 |
|
|
goto nextchar;
|
| 195 |
|
|
case 'z':
|
| 196 |
|
|
case 'Z':
|
| 197 |
|
|
++axis;
|
| 198 |
|
|
case 'y':
|
| 199 |
|
|
case 'Y':
|
| 200 |
|
|
++axis;
|
| 201 |
|
|
case 'x':
|
| 202 |
|
|
case 'X':
|
| 203 |
|
|
dv[axis] = sign;
|
| 204 |
|
|
return(!s[1] | isspace(s[1]));
|
| 205 |
|
|
default:
|
| 206 |
|
|
break;
|
| 207 |
|
|
}
|
| 208 |
|
|
#ifdef SMLFLT
|
| 209 |
|
|
if (sscanf(s, "%f,%f,%f", &dv[0], &dv[1], &dv[2]) != 3)
|
| 210 |
|
|
#else
|
| 211 |
|
|
if (sscanf(s, "%lf,%lf,%lf", &dv[0], &dv[1], &dv[2]) != 3)
|
| 212 |
|
|
#endif
|
| 213 |
|
|
return(0);
|
| 214 |
|
|
dv[0] *= (RREAL)sign;
|
| 215 |
|
|
return(normalize(dv) > 0);
|
| 216 |
|
|
}
|
| 217 |
|
|
|
| 218 |
|
|
/* Parse program parameters (directives) */
|
| 219 |
|
|
int
|
| 220 |
|
|
parse_params(PARAMS *p, char *pargs)
|
| 221 |
|
|
{
|
| 222 |
|
|
char *cp = pargs;
|
| 223 |
|
|
int nparams = 0;
|
| 224 |
|
|
int quot;
|
| 225 |
|
|
int i;
|
| 226 |
|
|
|
| 227 |
|
|
for ( ; ; ) {
|
| 228 |
|
|
switch (*cp++) {
|
| 229 |
|
|
case 'h':
|
| 230 |
|
|
if (*cp++ != '=')
|
| 231 |
|
|
break;
|
| 232 |
|
|
if ((*cp == '+') | (*cp == '-'))
|
| 233 |
|
|
p->sign = *cp++;
|
| 234 |
|
|
else
|
| 235 |
|
|
p->sign = '+';
|
| 236 |
|
|
p->hsiz = 0;
|
| 237 |
|
|
i = 0;
|
| 238 |
|
|
while (*cp && !isspace(*cp)) {
|
| 239 |
|
|
if (isdigit(*cp))
|
| 240 |
|
|
p->hsiz = 10*p->hsiz + *cp - '0';
|
| 241 |
|
|
p->hemis[i++] = *cp++;
|
| 242 |
|
|
}
|
| 243 |
|
|
if (!i)
|
| 244 |
|
|
break;
|
| 245 |
|
|
p->hemis[i] = '\0';
|
| 246 |
|
|
p->hsiz += !p->hsiz;
|
| 247 |
|
|
++nparams;
|
| 248 |
|
|
continue;
|
| 249 |
|
|
case 'u':
|
| 250 |
|
|
if (*cp++ != '=')
|
| 251 |
|
|
break;
|
| 252 |
|
|
if (!get_direction(p->vup, cp))
|
| 253 |
|
|
break;
|
| 254 |
|
|
while (*cp && !isspace(*cp++))
|
| 255 |
|
|
;
|
| 256 |
|
|
++nparams;
|
| 257 |
|
|
continue;
|
| 258 |
|
|
case 'o':
|
| 259 |
|
|
if (*cp++ != '=')
|
| 260 |
|
|
break;
|
| 261 |
|
|
quot = 0;
|
| 262 |
|
|
if ((*cp == '"') | (*cp == '\''))
|
| 263 |
|
|
quot = *cp++;
|
| 264 |
|
|
i = 0;
|
| 265 |
|
|
while (*cp && (quot ? (*cp != quot) : !isspace(*cp))) {
|
| 266 |
|
|
i++; cp++;
|
| 267 |
|
|
}
|
| 268 |
|
|
if (!i)
|
| 269 |
|
|
break;
|
| 270 |
|
|
if (!*cp) {
|
| 271 |
|
|
if (quot)
|
| 272 |
|
|
break;
|
| 273 |
|
|
cp[1] = '\0';
|
| 274 |
|
|
}
|
| 275 |
|
|
*cp = '\0';
|
| 276 |
|
|
strlcpy(p->outfn, cp-i, sizeof(p->outfn));
|
| 277 |
|
|
*cp++ = quot ? quot : ' ';
|
| 278 |
|
|
++nparams;
|
| 279 |
|
|
continue;
|
| 280 |
|
|
case ' ':
|
| 281 |
|
|
case '\t':
|
| 282 |
|
|
case '\r':
|
| 283 |
|
|
case '\n':
|
| 284 |
|
|
continue;
|
| 285 |
|
|
case '\0':
|
| 286 |
|
|
return(nparams);
|
| 287 |
|
|
default:
|
| 288 |
|
|
break;
|
| 289 |
|
|
}
|
| 290 |
|
|
break;
|
| 291 |
|
|
}
|
| 292 |
|
|
sprintf(errmsg, "bad parameter string: %s", pargs);
|
| 293 |
|
|
error(USER, errmsg);
|
| 294 |
|
|
return(-1); /* pro forma return */
|
| 295 |
|
|
}
|
| 296 |
|
|
|
| 297 |
|
|
/* Add receiver modifier and associated parameters */
|
| 298 |
|
|
void
|
| 299 |
|
|
finish_receiver()
|
| 300 |
|
|
{
|
| 301 |
|
|
bool uniform = false;
|
| 302 |
|
|
const char *calfn = NULL;
|
| 303 |
|
|
char binv[64] = "";
|
| 304 |
|
|
char params[128] = "";
|
| 305 |
|
|
const char *binf = NULL;
|
| 306 |
|
|
const char *nbins = NULL;
|
| 307 |
|
|
/* check arguments */
|
| 308 |
|
|
if (!curmod[0])
|
| 309 |
|
|
error(USER, "missing receiver surface");
|
| 310 |
|
|
if (!curparams.outfn[0])
|
| 311 |
|
|
error(USER, "missing output file for receiver");
|
| 312 |
|
|
if (!curparams.hemis[0])
|
| 313 |
|
|
error(USER, "missing hemisphere sampling type");
|
| 314 |
|
|
if (normalize(curparams.nrm) == 0)
|
| 315 |
|
|
error(USER, "undefined normal for hemisphere sampling");
|
| 316 |
|
|
if (normalize(curparams.vup) == 0) {
|
| 317 |
|
|
if (fabs(curparams.nrm[2]) < .7)
|
| 318 |
|
|
curparams.vup[2] = 1;
|
| 319 |
|
|
else
|
| 320 |
|
|
curparams.vup[1] = 1;
|
| 321 |
|
|
}
|
| 322 |
|
|
/* determine sample type/bin */
|
| 323 |
|
|
if ((tolower(curparams.hemis[0]) == 'u') | (curparams.hemis[0] == '1')) {
|
| 324 |
|
|
sprintf(binv, "if(-Dx*%g-Dy*%g-Dz*%g,0,-1)",
|
| 325 |
|
|
curparams.nrm[0], curparams.nrm[1], curparams.nrm[2]);
|
| 326 |
|
|
uniform = true; /* uniform sampling -- one bin */
|
| 327 |
|
|
} else if (tolower(curparams.hemis[0]) == 's' &&
|
| 328 |
|
|
tolower(curparams.hemis[1]) == 'c') {
|
| 329 |
|
|
/* assign parameters */
|
| 330 |
|
|
if (curparams.hsiz <= 1)
|
| 331 |
|
|
error(USER, "missing size for Shirley-Chiu sampling");
|
| 332 |
|
|
calfn = shirchiufn; shirchiufn = NULL;
|
| 333 |
|
|
sprintf(params, "SCdim=%d,rNx=%g,rNy=%g,rNz=%g,Ux=%g,Uy=%g,Uz=%g,RHS=%c1",
|
| 334 |
|
|
curparams.hsiz,
|
| 335 |
|
|
curparams.nrm[0], curparams.nrm[1], curparams.nrm[2],
|
| 336 |
|
|
curparams.vup[0], curparams.vup[1], curparams.vup[2],
|
| 337 |
|
|
curparams.sign);
|
| 338 |
|
|
strcpy(binv, "scbin");
|
| 339 |
|
|
nbins = "SCdim*SCdim";
|
| 340 |
|
|
} else if ((tolower(curparams.hemis[0]) == 'r') |
|
| 341 |
|
|
(tolower(curparams.hemis[0]) == 't')) {
|
| 342 |
|
|
calfn = reinhfn; reinhfn = NULL;
|
| 343 |
|
|
sprintf(params, "MF=%d,rNx=%g,rNy=%g,rNz=%g,Ux=%g,Uy=%g,Uz=%g,RHS=%c1",
|
| 344 |
|
|
curparams.hsiz,
|
| 345 |
|
|
curparams.nrm[0], curparams.nrm[1], curparams.nrm[2],
|
| 346 |
|
|
curparams.vup[0], curparams.vup[1], curparams.vup[2],
|
| 347 |
|
|
curparams.sign);
|
| 348 |
|
|
strcpy(binv, "rbin");
|
| 349 |
|
|
nbins = "Nrbins";
|
| 350 |
|
|
} else if (tolower(curparams.hemis[0]) == 'k' &&
|
| 351 |
|
|
!curparams.hemis[1] |
|
| 352 |
|
|
(tolower(curparams.hemis[1]) == 'f') |
|
| 353 |
|
|
(curparams.hemis[1] == '1')) {
|
| 354 |
|
|
calfn = kfullfn; kfullfn = NULL;
|
| 355 |
|
|
binf = "kbin";
|
| 356 |
|
|
nbins = "Nkbins";
|
| 357 |
|
|
} else if (tolower(curparams.hemis[0]) == 'k' &&
|
| 358 |
|
|
(tolower(curparams.hemis[1]) == 'h') |
|
| 359 |
|
|
(curparams.hemis[1] == '2')) {
|
| 360 |
|
|
calfn = khalffn; khalffn = NULL;
|
| 361 |
|
|
binf = "khbin";
|
| 362 |
|
|
nbins = "Nkhbins";
|
| 363 |
|
|
} else if (tolower(curparams.hemis[0]) == 'k' &&
|
| 364 |
|
|
(tolower(curparams.hemis[1]) == 'q') |
|
| 365 |
|
|
(curparams.hemis[1] == '4')) {
|
| 366 |
|
|
calfn = kquarterfn; kquarterfn = NULL;
|
| 367 |
|
|
binf = "kqbin";
|
| 368 |
|
|
nbins = "Nkqbins";
|
| 369 |
|
|
} else if (!strcasecmp(curparams.hemis, "cie")) {
|
| 370 |
|
|
calfn = ciefn; ciefn = NULL;
|
| 371 |
|
|
sprintf(params, "rNx=%g,rNy=%g,rNz=%g,Ux=%g,Uy=%g,Uz=%g,RHS=%c1",
|
| 372 |
|
|
curparams.nrm[0], curparams.nrm[1], curparams.nrm[2],
|
| 373 |
|
|
curparams.vup[0], curparams.vup[1], curparams.vup[2],
|
| 374 |
|
|
curparams.sign);
|
| 375 |
|
|
strcpy(binv, "cbin");
|
| 376 |
|
|
nbins = "Ncbins";
|
| 377 |
|
|
} else {
|
| 378 |
|
|
sprintf(errmsg, "unrecognized hemisphere sampling: h=%s",
|
| 379 |
|
|
curparams.hemis);
|
| 380 |
|
|
error(USER, errmsg);
|
| 381 |
|
|
}
|
| 382 |
|
|
if (tolower(curparams.hemis[0]) == 'k') {
|
| 383 |
|
|
sprintf(params, "RHS=%c1", curparams.sign);
|
| 384 |
|
|
}
|
| 385 |
|
|
if (!uniform)
|
| 386 |
|
|
for (SURF *sp = curparams.slist; sp != NULL; sp = sp->next)
|
| 387 |
|
|
if (sp->styp == ST_SOURCE && fabs(sp->area - PI) > 1e-3) {
|
| 388 |
|
|
sprintf(errmsg, "source '%s' must be 180-degrees",
|
| 389 |
|
|
sp->sname);
|
| 390 |
|
|
error(USER, errmsg);
|
| 391 |
|
|
}
|
| 392 |
|
|
if (binf != NULL) { /* complete bin function? */
|
| 393 |
|
|
sprintf(binv, "%s(%g,%g,%g,%g,%g,%g)", binf,
|
| 394 |
|
|
curparams.nrm[0], curparams.nrm[1], curparams.nrm[2],
|
| 395 |
|
|
curparams.vup[0], curparams.vup[1], curparams.vup[2]);
|
| 396 |
|
|
}
|
| 397 |
|
|
if (calfn != NULL) /* load cal file if needed */
|
| 398 |
|
|
loadfunc(const_cast<char *>(calfn));
|
| 399 |
|
|
if (params[0]) /* set parameters if any */
|
| 400 |
|
|
set_eparams(params);
|
| 401 |
|
|
// add modifier to rcontrib object
|
| 402 |
|
|
if (!myRCmanager.AddModifier(curmod, curparams.outfn, params, binv,
|
| 403 |
|
|
nbins==NULL ? 1 : int(eval(const_cast<char *>(nbins)) + .5)))
|
| 404 |
|
|
error(INTERNAL, "AddModifier() call failed");
|
| 405 |
|
|
|
| 406 |
|
|
clear_params(&curparams, true); /* clear for next receiver */
|
| 407 |
|
|
curmod[0] = '\0';
|
| 408 |
|
|
}
|
| 409 |
|
|
|
| 410 |
|
|
/* Make randomly oriented tangent plane axes for given normal direction */
|
| 411 |
|
|
void
|
| 412 |
|
|
make_axes(FVECT uva[2], const FVECT nrm)
|
| 413 |
|
|
{
|
| 414 |
|
|
int i;
|
| 415 |
|
|
|
| 416 |
|
|
if (!getperpendicular(uva[0], nrm, 1))
|
| 417 |
|
|
error(USER, "bad surface normal in make_axes()");
|
| 418 |
|
|
VCROSS(uva[1], nrm, uva[0]);
|
| 419 |
|
|
}
|
| 420 |
|
|
|
| 421 |
|
|
/* Illegal sender surfaces end up here */
|
| 422 |
|
|
int
|
| 423 |
|
|
ssamp_bad(FVECT orig, SURF *sp, double x)
|
| 424 |
|
|
{
|
| 425 |
|
|
sprintf(errmsg, "illegal sender surface '%s'", sp->sname);
|
| 426 |
|
|
error(INTERNAL, errmsg);
|
| 427 |
|
|
return(0);
|
| 428 |
|
|
}
|
| 429 |
|
|
|
| 430 |
|
|
/* Generate origin on ring surface from uniform random variable */
|
| 431 |
|
|
int
|
| 432 |
|
|
ssamp_ring(FVECT orig, SURF *sp, double x)
|
| 433 |
|
|
{
|
| 434 |
|
|
FVECT *uva = (FVECT *)sp->priv;
|
| 435 |
|
|
double samp2[2];
|
| 436 |
|
|
double uv[2];
|
| 437 |
|
|
int i;
|
| 438 |
|
|
|
| 439 |
|
|
if (uva == NULL) { /* need tangent axes */
|
| 440 |
|
|
uva = (FVECT *)malloc(sizeof(FVECT)*2);
|
| 441 |
|
|
if (uva == NULL) {
|
| 442 |
|
|
error(SYSTEM, "out of memory in ssamp_ring()");
|
| 443 |
|
|
return(0);
|
| 444 |
|
|
}
|
| 445 |
|
|
make_axes(uva, sp->snrm);
|
| 446 |
|
|
sp->priv = uva;
|
| 447 |
|
|
}
|
| 448 |
|
|
SDmultiSamp(samp2, 2, x);
|
| 449 |
|
|
samp2[0] = sqrt(samp2[0]*sp->area*(1./PI) + sp->farg[6]*sp->farg[6]);
|
| 450 |
|
|
samp2[1] *= 2.*PI;
|
| 451 |
|
|
uv[0] = samp2[0]*tcos(samp2[1]);
|
| 452 |
|
|
uv[1] = samp2[0]*tsin(samp2[1]);
|
| 453 |
|
|
for (i = 3; i--; )
|
| 454 |
|
|
orig[i] = sp->farg[i] + uv[0]*uva[0][i] + uv[1]*uva[1][i];
|
| 455 |
|
|
return(1);
|
| 456 |
|
|
}
|
| 457 |
|
|
|
| 458 |
|
|
/* Add triangle to polygon's list (call-back function) */
|
| 459 |
|
|
int
|
| 460 |
|
|
add_triangle(const Vert2_list *tp, int a, int b, int c)
|
| 461 |
|
|
{
|
| 462 |
|
|
POLYTRIS *ptp = (POLYTRIS *)tp->p;
|
| 463 |
|
|
PTRI *trip = ptp->tri + ptp->ntris++;
|
| 464 |
|
|
|
| 465 |
|
|
trip->vndx[0] = a;
|
| 466 |
|
|
trip->vndx[1] = b;
|
| 467 |
|
|
trip->vndx[2] = c;
|
| 468 |
|
|
return(1);
|
| 469 |
|
|
}
|
| 470 |
|
|
|
| 471 |
|
|
/* Generate origin on polygon surface from uniform random variable */
|
| 472 |
|
|
int
|
| 473 |
|
|
ssamp_poly(FVECT orig, SURF *sp, double x)
|
| 474 |
|
|
{
|
| 475 |
|
|
POLYTRIS *ptp = (POLYTRIS *)sp->priv;
|
| 476 |
|
|
double samp2[2];
|
| 477 |
|
|
double *v0, *v1, *v2;
|
| 478 |
|
|
int i;
|
| 479 |
|
|
|
| 480 |
|
|
if (ptp == NULL) { /* need to triangulate */
|
| 481 |
|
|
ptp = (POLYTRIS *)malloc(sizeof(POLYTRIS) +
|
| 482 |
|
|
sizeof(PTRI)*(sp->nfargs/3 - 3));
|
| 483 |
|
|
if (ptp == NULL)
|
| 484 |
|
|
goto memerr;
|
| 485 |
|
|
if (sp->nfargs == 3) { /* simple case */
|
| 486 |
|
|
ptp->ntris = 1;
|
| 487 |
|
|
ptp->tri[0].vndx[0] = 0;
|
| 488 |
|
|
ptp->tri[0].vndx[1] = 1;
|
| 489 |
|
|
ptp->tri[0].vndx[2] = 2;
|
| 490 |
|
|
ptp->tri[0].afrac = 1;
|
| 491 |
|
|
} else {
|
| 492 |
|
|
Vert2_list *v2l = polyAlloc(sp->nfargs/3);
|
| 493 |
|
|
if (v2l == NULL)
|
| 494 |
|
|
goto memerr;
|
| 495 |
|
|
make_axes(ptp->uva, sp->snrm);
|
| 496 |
|
|
for (i = v2l->nv; i--; ) {
|
| 497 |
|
|
v2l->v[i].mX = DOT(sp->farg+3*i, ptp->uva[0]);
|
| 498 |
|
|
v2l->v[i].mY = DOT(sp->farg+3*i, ptp->uva[1]);
|
| 499 |
|
|
}
|
| 500 |
|
|
ptp->ntris = 0;
|
| 501 |
|
|
v2l->p = ptp;
|
| 502 |
|
|
if (!polyTriangulate(v2l, add_triangle)) {
|
| 503 |
|
|
sprintf(errmsg, "cannot triangulate polygon '%s'",
|
| 504 |
|
|
sp->sname);
|
| 505 |
|
|
error(USER, errmsg);
|
| 506 |
|
|
return(0);
|
| 507 |
|
|
}
|
| 508 |
|
|
for (i = ptp->ntris; i--; ) {
|
| 509 |
|
|
int a = ptp->tri[i].vndx[0];
|
| 510 |
|
|
int b = ptp->tri[i].vndx[1];
|
| 511 |
|
|
int c = ptp->tri[i].vndx[2];
|
| 512 |
|
|
ptp->tri[i].afrac =
|
| 513 |
|
|
(v2l->v[a].mX*v2l->v[b].mY -
|
| 514 |
|
|
v2l->v[b].mX*v2l->v[a].mY +
|
| 515 |
|
|
v2l->v[b].mX*v2l->v[c].mY -
|
| 516 |
|
|
v2l->v[c].mX*v2l->v[b].mY +
|
| 517 |
|
|
v2l->v[c].mX*v2l->v[a].mY -
|
| 518 |
|
|
v2l->v[a].mX*v2l->v[c].mY) /
|
| 519 |
|
|
(2.*sp->area);
|
| 520 |
|
|
}
|
| 521 |
|
|
polyFree(v2l);
|
| 522 |
|
|
}
|
| 523 |
|
|
sp->priv = ptp;
|
| 524 |
|
|
}
|
| 525 |
|
|
/* pick triangle by partial area */
|
| 526 |
|
|
for (i = 0; i < ptp->ntris-1 && x > ptp->tri[i].afrac; i++)
|
| 527 |
|
|
x -= ptp->tri[i].afrac;
|
| 528 |
|
|
SDmultiSamp(samp2, 2, x/ptp->tri[i].afrac);
|
| 529 |
|
|
samp2[0] *= samp2[1] = sqrt(samp2[1]);
|
| 530 |
|
|
samp2[1] = 1. - samp2[1];
|
| 531 |
|
|
v0 = sp->farg + 3*ptp->tri[i].vndx[0];
|
| 532 |
|
|
v1 = sp->farg + 3*ptp->tri[i].vndx[1];
|
| 533 |
|
|
v2 = sp->farg + 3*ptp->tri[i].vndx[2];
|
| 534 |
|
|
for (i = 3; i--; )
|
| 535 |
|
|
orig[i] = v0[i] + samp2[0]*(v1[i] - v0[i])
|
| 536 |
|
|
+ samp2[1]*(v2[i] - v0[i]) ;
|
| 537 |
|
|
return(1);
|
| 538 |
|
|
memerr:
|
| 539 |
|
|
error(SYSTEM, "out of memory in ssamp_poly");
|
| 540 |
|
|
return(0);
|
| 541 |
|
|
}
|
| 542 |
|
|
|
| 543 |
|
|
/* Compute sample origin based on projected areas of sender subsurfaces */
|
| 544 |
|
|
int
|
| 545 |
|
|
sample_origin(PARAMS *p, FVECT orig, const FVECT rdir, double x)
|
| 546 |
|
|
{
|
| 547 |
|
|
static double *projsa;
|
| 548 |
|
|
static int nall;
|
| 549 |
|
|
double tarea = 0;
|
| 550 |
|
|
int i;
|
| 551 |
|
|
SURF *sp;
|
| 552 |
|
|
/* special case for lone surface */
|
| 553 |
|
|
if (p->nsurfs == 1) {
|
| 554 |
|
|
sp = p->slist;
|
| 555 |
|
|
if (DOT(sp->snrm, rdir) >= FTINY) {
|
| 556 |
|
|
sprintf(errmsg, "sample behind sender '%s'", sp->sname);
|
| 557 |
|
|
error(INTERNAL, errmsg);
|
| 558 |
|
|
return(0);
|
| 559 |
|
|
}
|
| 560 |
|
|
return((*orig_in_surf[sp->styp])(orig, sp, x));
|
| 561 |
|
|
}
|
| 562 |
|
|
if (p->nsurfs > nall) { /* (re)allocate surface area cache */
|
| 563 |
|
|
if (projsa) free(projsa);
|
| 564 |
|
|
projsa = (double *)malloc(sizeof(double)*p->nsurfs);
|
| 565 |
|
|
if (projsa == NULL)
|
| 566 |
|
|
error(SYSTEM, "out of memory in sample_origin()");
|
| 567 |
|
|
nall = p->nsurfs;
|
| 568 |
|
|
}
|
| 569 |
|
|
/* compute projected areas */
|
| 570 |
|
|
for (i = 0, sp = p->slist; sp != NULL; i++, sp = sp->next) {
|
| 571 |
|
|
projsa[i] = -DOT(sp->snrm, rdir) * sp->area;
|
| 572 |
|
|
tarea += projsa[i] *= (double)(projsa[i] > 0);
|
| 573 |
|
|
}
|
| 574 |
|
|
if (tarea < FTINY*FTINY) { /* wrong side of sender? */
|
| 575 |
|
|
error(INTERNAL, "sample behind all sender elements!");
|
| 576 |
|
|
return(0);
|
| 577 |
|
|
}
|
| 578 |
|
|
tarea *= x; /* get surface from list */
|
| 579 |
|
|
for (i = 0, sp = p->slist; tarea > projsa[i]; sp = sp->next)
|
| 580 |
|
|
tarea -= projsa[i++];
|
| 581 |
|
|
return((*orig_in_surf[sp->styp])(orig, sp, tarea/projsa[i]));
|
| 582 |
|
|
}
|
| 583 |
|
|
|
| 584 |
|
|
/* Uniform sample generator */
|
| 585 |
|
|
int
|
| 586 |
|
|
sample_uniform(PARAMS *p, int b, FVECT orig_dir[])
|
| 587 |
|
|
{
|
| 588 |
|
|
int n = myRCmanager.accum;
|
| 589 |
|
|
double samp3[3];
|
| 590 |
|
|
FVECT duvw;
|
| 591 |
|
|
int i;
|
| 592 |
|
|
|
| 593 |
|
|
if (orig_dir == NULL) /* just requesting number of bins? */
|
| 594 |
|
|
return(1);
|
| 595 |
|
|
|
| 596 |
|
|
while (n--) { /* stratified hemisphere sampling */
|
| 597 |
|
|
SDmultiSamp(samp3, 3, (n+frandom())/myRCmanager.accum);
|
| 598 |
|
|
square2disk(duvw, samp3[1], samp3[2]);
|
| 599 |
|
|
duvw[2] = -sqrt(1. - duvw[0]*duvw[0] - duvw[1]*duvw[1]);
|
| 600 |
|
|
for (i = 3; i--; )
|
| 601 |
|
|
orig_dir[1][i] = duvw[0]*p->udir[i] +
|
| 602 |
|
|
duvw[1]*p->vdir[i] +
|
| 603 |
|
|
duvw[2]*p->nrm[i] ;
|
| 604 |
|
|
if (!sample_origin(p, orig_dir[0], orig_dir[1], samp3[0]))
|
| 605 |
|
|
return(0);
|
| 606 |
|
|
orig_dir += 2;
|
| 607 |
|
|
}
|
| 608 |
|
|
return(1);
|
| 609 |
|
|
}
|
| 610 |
|
|
|
| 611 |
|
|
/* Shirly-Chiu sample generator */
|
| 612 |
|
|
int
|
| 613 |
|
|
sample_shirchiu(PARAMS *p, int b, FVECT orig_dir[])
|
| 614 |
|
|
{
|
| 615 |
|
|
int n = myRCmanager.accum;
|
| 616 |
|
|
double samp3[3];
|
| 617 |
|
|
FVECT duvw;
|
| 618 |
|
|
int i;
|
| 619 |
|
|
|
| 620 |
|
|
if (orig_dir == NULL) /* just requesting number of bins? */
|
| 621 |
|
|
return(p->hsiz*p->hsiz);
|
| 622 |
|
|
|
| 623 |
|
|
while (n--) { /* stratified sampling */
|
| 624 |
|
|
SDmultiSamp(samp3, 3, (n+frandom())/myRCmanager.accum);
|
| 625 |
|
|
square2disk(duvw, (b/p->hsiz + samp3[1])/curparams.hsiz,
|
| 626 |
|
|
(b%p->hsiz + samp3[2])/curparams.hsiz);
|
| 627 |
|
|
duvw[2] = sqrt(1. - duvw[0]*duvw[0] - duvw[1]*duvw[1]);
|
| 628 |
|
|
for (i = 3; i--; )
|
| 629 |
|
|
orig_dir[1][i] = -duvw[0]*p->udir[i] -
|
| 630 |
|
|
duvw[1]*p->vdir[i] -
|
| 631 |
|
|
duvw[2]*p->nrm[i] ;
|
| 632 |
|
|
if (!sample_origin(p, orig_dir[0], orig_dir[1], samp3[0]))
|
| 633 |
|
|
return(0);
|
| 634 |
|
|
orig_dir += 2;
|
| 635 |
|
|
}
|
| 636 |
|
|
return(1);
|
| 637 |
|
|
}
|
| 638 |
|
|
|
| 639 |
|
|
/* Reinhart/Tregenza sample generator */
|
| 640 |
|
|
int
|
| 641 |
|
|
sample_reinhart(PARAMS *p, int b, FVECT orig_dir[])
|
| 642 |
|
|
{
|
| 643 |
|
|
#define T_NALT 7
|
| 644 |
|
|
static const int tnaz[T_NALT] = {30, 30, 24, 24, 18, 12, 6};
|
| 645 |
|
|
const int RowMax = T_NALT*p->hsiz + 1;
|
| 646 |
|
|
const double RAH = (.5*PI)/(RowMax-.5);
|
| 647 |
|
|
#define rnaz(r) (r >= RowMax-1 ? 1 : p->hsiz*tnaz[r/p->hsiz])
|
| 648 |
|
|
int n = myRCmanager.accum;
|
| 649 |
|
|
int row, col;
|
| 650 |
|
|
double samp3[3];
|
| 651 |
|
|
double alt, azi;
|
| 652 |
|
|
double duvw[3];
|
| 653 |
|
|
int i;
|
| 654 |
|
|
|
| 655 |
|
|
if (orig_dir == NULL) { /* just requesting number of bins? */
|
| 656 |
|
|
n = 0;
|
| 657 |
|
|
for (row = RowMax; row--; ) n += rnaz(row);
|
| 658 |
|
|
return(n);
|
| 659 |
|
|
}
|
| 660 |
|
|
row = 0; /* identify row & column */
|
| 661 |
|
|
col = b;
|
| 662 |
|
|
while (col >= rnaz(row)) {
|
| 663 |
|
|
col -= rnaz(row);
|
| 664 |
|
|
++row;
|
| 665 |
|
|
}
|
| 666 |
|
|
while (n--) { /* stratified sampling */
|
| 667 |
|
|
SDmultiSamp(samp3, 3, (n+frandom())/myRCmanager.accum);
|
| 668 |
|
|
if (row >= RowMax-1) /* avoid crowding at zenith */
|
| 669 |
|
|
samp3[1] *= samp3[1];
|
| 670 |
|
|
alt = (row+samp3[1])*RAH;
|
| 671 |
|
|
azi = (2.*PI)*(col+samp3[2]-.5)/rnaz(row);
|
| 672 |
|
|
duvw[2] = cos(alt); /* measured from horizon */
|
| 673 |
|
|
duvw[0] = tsin(azi)*duvw[2];
|
| 674 |
|
|
duvw[1] = -tcos(azi)*duvw[2];
|
| 675 |
|
|
duvw[2] = sqrt(1. - duvw[2]*duvw[2]);
|
| 676 |
|
|
for (i = 3; i--; )
|
| 677 |
|
|
orig_dir[1][i] = -duvw[0]*p->udir[i] -
|
| 678 |
|
|
duvw[1]*p->vdir[i] -
|
| 679 |
|
|
duvw[2]*p->nrm[i] ;
|
| 680 |
|
|
if (!sample_origin(p, orig_dir[0], orig_dir[1], samp3[0]))
|
| 681 |
|
|
return(0);
|
| 682 |
|
|
orig_dir += 2;
|
| 683 |
|
|
}
|
| 684 |
|
|
return(1);
|
| 685 |
|
|
#undef rnaz
|
| 686 |
|
|
#undef T_NALT
|
| 687 |
|
|
}
|
| 688 |
|
|
|
| 689 |
|
|
/* Klems sample generator */
|
| 690 |
|
|
int
|
| 691 |
|
|
sample_klems(PARAMS *p, int b, FVECT orig_dir[])
|
| 692 |
|
|
{
|
| 693 |
|
|
static const char bname[4][20] = {
|
| 694 |
|
|
"LBNL/Klems Full",
|
| 695 |
|
|
"LBNL/Klems Half",
|
| 696 |
|
|
"INTERNAL ERROR",
|
| 697 |
|
|
"LBNL/Klems Quarter"
|
| 698 |
|
|
};
|
| 699 |
|
|
static ANGLE_BASIS *kbasis[4];
|
| 700 |
|
|
const int bi = p->hemis[1] - '1';
|
| 701 |
|
|
int n = myRCmanager.accum;
|
| 702 |
|
|
double samp2[2];
|
| 703 |
|
|
double duvw[3];
|
| 704 |
|
|
int i;
|
| 705 |
|
|
|
| 706 |
|
|
if (!kbasis[bi]) { /* need to get basis, first */
|
| 707 |
|
|
for (i = 4; i--; )
|
| 708 |
|
|
if (!strcasecmp(abase_list[i].name, bname[bi])) {
|
| 709 |
|
|
kbasis[bi] = &abase_list[i];
|
| 710 |
|
|
break;
|
| 711 |
|
|
}
|
| 712 |
|
|
if (i < 0) {
|
| 713 |
|
|
sprintf(errmsg, "unknown hemisphere basis '%s'",
|
| 714 |
|
|
bname[bi]);
|
| 715 |
|
|
error(USER, errmsg);
|
| 716 |
|
|
return(0);
|
| 717 |
|
|
}
|
| 718 |
|
|
}
|
| 719 |
|
|
if (orig_dir == NULL) /* just requesting number of bins? */
|
| 720 |
|
|
return(kbasis[bi]->nangles);
|
| 721 |
|
|
|
| 722 |
|
|
while (n--) { /* stratified sampling */
|
| 723 |
|
|
SDmultiSamp(samp2, 2, (n+frandom())/myRCmanager.accum);
|
| 724 |
|
|
if (!fo_getvec(duvw, b+samp2[1], kbasis[bi]))
|
| 725 |
|
|
return(0);
|
| 726 |
|
|
for (i = 3; i--; )
|
| 727 |
|
|
orig_dir[1][i] = -duvw[0]*p->udir[i] -
|
| 728 |
|
|
duvw[1]*p->vdir[i] -
|
| 729 |
|
|
duvw[2]*p->nrm[i] ;
|
| 730 |
|
|
if (!sample_origin(p, orig_dir[0], orig_dir[1], samp2[0]))
|
| 731 |
|
|
return(0);
|
| 732 |
|
|
orig_dir += 2;
|
| 733 |
|
|
}
|
| 734 |
|
|
return(1);
|
| 735 |
|
|
}
|
| 736 |
|
|
|
| 737 |
|
|
/* Prepare hemisphere basis sampler that will send rays to rcontrib */
|
| 738 |
|
|
int
|
| 739 |
|
|
prepare_sampler(PARAMS *p)
|
| 740 |
|
|
{
|
| 741 |
|
|
if (p->slist == NULL) { /* missing sample surface! */
|
| 742 |
|
|
error(USER, "no sender surface");
|
| 743 |
|
|
return(-1);
|
| 744 |
|
|
}
|
| 745 |
|
|
/* misplaced output file spec. */
|
| 746 |
|
|
if (p->outfn[0]) {
|
| 747 |
|
|
sprintf(errmsg, "ignoring output file in sender ('%s')",
|
| 748 |
|
|
p->outfn);
|
| 749 |
|
|
error(WARNING, errmsg);
|
| 750 |
|
|
}
|
| 751 |
|
|
/* check/set basis hemisphere */
|
| 752 |
|
|
if (!p->hemis[0]) {
|
| 753 |
|
|
error(USER, "missing sender sampling type");
|
| 754 |
|
|
return(-1);
|
| 755 |
|
|
}
|
| 756 |
|
|
if (normalize(p->nrm) == 0) {
|
| 757 |
|
|
error(USER, "undefined normal for sender sampling");
|
| 758 |
|
|
return(-1);
|
| 759 |
|
|
}
|
| 760 |
|
|
if (normalize(p->vup) == 0) {
|
| 761 |
|
|
if (fabs(p->nrm[2]) < .7)
|
| 762 |
|
|
p->vup[2] = 1;
|
| 763 |
|
|
else
|
| 764 |
|
|
p->vup[1] = 1;
|
| 765 |
|
|
}
|
| 766 |
|
|
fcross(p->udir, p->vup, p->nrm);
|
| 767 |
|
|
if (normalize(p->udir) == 0) {
|
| 768 |
|
|
error(USER, "up vector coincides with sender normal");
|
| 769 |
|
|
return(-1);
|
| 770 |
|
|
}
|
| 771 |
|
|
fcross(p->vdir, p->nrm, p->udir);
|
| 772 |
|
|
if (p->sign == '-') { /* left-handed coordinate system? */
|
| 773 |
|
|
p->udir[0] *= -1.;
|
| 774 |
|
|
p->udir[1] *= -1.;
|
| 775 |
|
|
p->udir[2] *= -1.;
|
| 776 |
|
|
}
|
| 777 |
|
|
if ((tolower(p->hemis[0]) == 'u') | (p->hemis[0] == '1'))
|
| 778 |
|
|
p->sample_basis = sample_uniform;
|
| 779 |
|
|
else if (tolower(p->hemis[0]) == 's' &&
|
| 780 |
|
|
tolower(p->hemis[1]) == 'c')
|
| 781 |
|
|
p->sample_basis = sample_shirchiu;
|
| 782 |
|
|
else if ((tolower(p->hemis[0]) == 'r') |
|
| 783 |
|
|
(tolower(p->hemis[0]) == 't'))
|
| 784 |
|
|
p->sample_basis = sample_reinhart;
|
| 785 |
|
|
else if (tolower(p->hemis[0]) == 'k') {
|
| 786 |
|
|
switch (p->hemis[1]) {
|
| 787 |
|
|
case '1':
|
| 788 |
|
|
case '2':
|
| 789 |
|
|
case '4':
|
| 790 |
|
|
break;
|
| 791 |
|
|
case 'f':
|
| 792 |
|
|
case 'F':
|
| 793 |
|
|
case '\0':
|
| 794 |
|
|
p->hemis[1] = '1';
|
| 795 |
|
|
break;
|
| 796 |
|
|
case 'h':
|
| 797 |
|
|
case 'H':
|
| 798 |
|
|
p->hemis[1] = '2';
|
| 799 |
|
|
break;
|
| 800 |
|
|
case 'q':
|
| 801 |
|
|
case 'Q':
|
| 802 |
|
|
p->hemis[1] = '4';
|
| 803 |
|
|
break;
|
| 804 |
|
|
default:
|
| 805 |
|
|
goto unrecognized;
|
| 806 |
|
|
}
|
| 807 |
|
|
p->hemis[2] = '\0';
|
| 808 |
|
|
p->sample_basis = sample_klems;
|
| 809 |
|
|
} else
|
| 810 |
|
|
goto unrecognized;
|
| 811 |
|
|
/* return number of bins */
|
| 812 |
|
|
return((*p->sample_basis)(p,0,NULL));
|
| 813 |
|
|
unrecognized:
|
| 814 |
|
|
sprintf(errmsg, "unrecognized sender sampling: h=%s", p->hemis);
|
| 815 |
|
|
error(USER, errmsg);
|
| 816 |
|
|
return(-1);
|
| 817 |
|
|
}
|
| 818 |
|
|
|
| 819 |
|
|
/* Compute normal and area for polygon */
|
| 820 |
|
|
int
|
| 821 |
|
|
finish_polygon(SURF *p)
|
| 822 |
|
|
{
|
| 823 |
|
|
const int nv = p->nfargs / 3;
|
| 824 |
|
|
FVECT e1, e2, vc;
|
| 825 |
|
|
int i;
|
| 826 |
|
|
|
| 827 |
|
|
memset(p->snrm, 0, sizeof(FVECT));
|
| 828 |
|
|
VSUB(e1, p->farg+3, p->farg);
|
| 829 |
|
|
for (i = 2; i < nv; i++) {
|
| 830 |
|
|
VSUB(e2, p->farg+3*i, p->farg);
|
| 831 |
|
|
VCROSS(vc, e1, e2);
|
| 832 |
|
|
p->snrm[0] += vc[0];
|
| 833 |
|
|
p->snrm[1] += vc[1];
|
| 834 |
|
|
p->snrm[2] += vc[2];
|
| 835 |
|
|
VCOPY(e1, e2);
|
| 836 |
|
|
}
|
| 837 |
|
|
p->area = normalize(p->snrm)*0.5;
|
| 838 |
|
|
return(p->area > FTINY*FTINY);
|
| 839 |
|
|
}
|
| 840 |
|
|
|
| 841 |
|
|
/* Add a surface to our current parameters */
|
| 842 |
|
|
void
|
| 843 |
|
|
add_surface(int st, const char *oname, FILE *fp)
|
| 844 |
|
|
{
|
| 845 |
|
|
SURF *snew;
|
| 846 |
|
|
int n;
|
| 847 |
|
|
/* get floating-point arguments */
|
| 848 |
|
|
if (!fscanf(fp, "%d", &n)) return;
|
| 849 |
|
|
while (n-- > 0) fscanf(fp, "%*s");
|
| 850 |
|
|
if (!fscanf(fp, "%d", &n)) return;
|
| 851 |
|
|
while (n-- > 0) fscanf(fp, "%*d");
|
| 852 |
|
|
if (!fscanf(fp, "%d", &n) || n <= 0) return;
|
| 853 |
|
|
snew = (SURF *)malloc(sizeof(SURF) + sizeof(double)*(n-1));
|
| 854 |
|
|
if (snew == NULL)
|
| 855 |
|
|
error(SYSTEM, "out of memory in add_surface()");
|
| 856 |
|
|
strncpy(snew->sname, oname, sizeof(snew->sname)-1);
|
| 857 |
|
|
snew->sname[sizeof(snew->sname)-1] = '\0';
|
| 858 |
|
|
snew->styp = st;
|
| 859 |
|
|
snew->priv = NULL;
|
| 860 |
|
|
snew->nfargs = n;
|
| 861 |
|
|
for (n = 0; n < snew->nfargs; n++)
|
| 862 |
|
|
if (fscanf(fp, "%lf", &snew->farg[n]) != 1) {
|
| 863 |
|
|
sprintf(errmsg, "error reading arguments for '%s'",
|
| 864 |
|
|
oname);
|
| 865 |
|
|
error(USER, errmsg);
|
| 866 |
|
|
}
|
| 867 |
|
|
switch (st) {
|
| 868 |
|
|
case ST_RING:
|
| 869 |
|
|
if (snew->nfargs != 8)
|
| 870 |
|
|
goto badcount;
|
| 871 |
|
|
VCOPY(snew->snrm, snew->farg+3);
|
| 872 |
|
|
if (normalize(snew->snrm) == 0)
|
| 873 |
|
|
goto badnorm;
|
| 874 |
|
|
if (snew->farg[7] < snew->farg[6]) {
|
| 875 |
|
|
double t = snew->farg[7];
|
| 876 |
|
|
snew->farg[7] = snew->farg[6];
|
| 877 |
|
|
snew->farg[6] = t;
|
| 878 |
|
|
}
|
| 879 |
|
|
snew->area = PI*(snew->farg[7]*snew->farg[7] -
|
| 880 |
|
|
snew->farg[6]*snew->farg[6]);
|
| 881 |
|
|
break;
|
| 882 |
|
|
case ST_POLY:
|
| 883 |
|
|
if (snew->nfargs < 9 || snew->nfargs % 3)
|
| 884 |
|
|
goto badcount;
|
| 885 |
|
|
finish_polygon(snew);
|
| 886 |
|
|
break;
|
| 887 |
|
|
case ST_SOURCE:
|
| 888 |
|
|
if (snew->nfargs != 4)
|
| 889 |
|
|
goto badcount;
|
| 890 |
|
|
for (n = 3; n--; ) /* need to reverse "normal" */
|
| 891 |
|
|
snew->snrm[n] = -snew->farg[n];
|
| 892 |
|
|
if (normalize(snew->snrm) == 0)
|
| 893 |
|
|
goto badnorm;
|
| 894 |
|
|
snew->area = sin((PI/180./2.)*snew->farg[3]);
|
| 895 |
|
|
snew->area *= PI*snew->area;
|
| 896 |
|
|
break;
|
| 897 |
|
|
}
|
| 898 |
|
|
if (snew->area <= FTINY*FTINY) {
|
| 899 |
|
|
sprintf(errmsg, "zero area for surface '%s'", oname);
|
| 900 |
|
|
error(WARNING, errmsg);
|
| 901 |
|
|
free(snew);
|
| 902 |
|
|
return;
|
| 903 |
|
|
}
|
| 904 |
|
|
VSUM(curparams.nrm, curparams.nrm, snew->snrm, snew->area);
|
| 905 |
|
|
snew->next = curparams.slist;
|
| 906 |
|
|
curparams.slist = snew;
|
| 907 |
|
|
curparams.nsurfs++;
|
| 908 |
|
|
return;
|
| 909 |
|
|
badcount:
|
| 910 |
|
|
sprintf(errmsg, "bad argument count for surface element '%s'", oname);
|
| 911 |
|
|
error(USER, errmsg);
|
| 912 |
|
|
badnorm:
|
| 913 |
|
|
sprintf(errmsg, "bad orientation for surface element '%s'", oname);
|
| 914 |
|
|
error(USER, errmsg);
|
| 915 |
|
|
}
|
| 916 |
|
|
|
| 917 |
|
|
/* Parse a receiver object (look for modifiers to add) */
|
| 918 |
|
|
int
|
| 919 |
|
|
add_recv_object(FILE *fp)
|
| 920 |
|
|
{
|
| 921 |
|
|
int st;
|
| 922 |
|
|
char thismod[128], otype[32], oname[128];
|
| 923 |
|
|
int n;
|
| 924 |
|
|
|
| 925 |
|
|
if (fscanf(fp, "%s %s %s", thismod, otype, oname) != 3)
|
| 926 |
|
|
return(0); /* must have hit EOF! */
|
| 927 |
|
|
if (!strcmp(otype, "alias")) {
|
| 928 |
|
|
fscanf(fp, "%*s"); /* skip alias */
|
| 929 |
|
|
return(0);
|
| 930 |
|
|
}
|
| 931 |
|
|
/* is it a new receiver? */
|
| 932 |
|
|
if ((st = surf_type(otype)) != ST_NONE) {
|
| 933 |
|
|
if (strcmp(thismod, curmod)) {
|
| 934 |
|
|
if (curmod[0]) /* output last receiver? */
|
| 935 |
|
|
finish_receiver();
|
| 936 |
|
|
parse_params(&curparams, newparams);
|
| 937 |
|
|
newparams[0] = '\0';
|
| 938 |
|
|
strcpy(curmod, thismod);
|
| 939 |
|
|
}
|
| 940 |
|
|
add_surface(st, oname, fp); /* read & store surface */
|
| 941 |
|
|
return(1);
|
| 942 |
|
|
}
|
| 943 |
|
|
/* else skip arguments */
|
| 944 |
|
|
if (!fscanf(fp, "%d", &n)) return(0);
|
| 945 |
|
|
while (n-- > 0) fscanf(fp, "%*s");
|
| 946 |
|
|
if (!fscanf(fp, "%d", &n)) return(0);
|
| 947 |
|
|
while (n-- > 0) fscanf(fp, "%*d");
|
| 948 |
|
|
if (!fscanf(fp, "%d", &n)) return(0);
|
| 949 |
|
|
while (n-- > 0) fscanf(fp, "%*f");
|
| 950 |
|
|
return(0);
|
| 951 |
|
|
}
|
| 952 |
|
|
|
| 953 |
|
|
/* Parse a sender object */
|
| 954 |
|
|
int
|
| 955 |
|
|
add_send_object(FILE *fp)
|
| 956 |
|
|
{
|
| 957 |
|
|
int st;
|
| 958 |
|
|
char thismod[128], otype[32], oname[128];
|
| 959 |
|
|
int n;
|
| 960 |
|
|
|
| 961 |
|
|
if (fscanf(fp, "%s %s %s", thismod, otype, oname) != 3)
|
| 962 |
|
|
return(0); /* must have hit EOF! */
|
| 963 |
|
|
if (!strcmp(otype, "alias")) {
|
| 964 |
|
|
fscanf(fp, "%*s"); /* skip alias */
|
| 965 |
|
|
return(0);
|
| 966 |
|
|
}
|
| 967 |
|
|
/* is it a new surface? */
|
| 968 |
|
|
if ((st = surf_type(otype)) != ST_NONE) {
|
| 969 |
|
|
if (st == ST_SOURCE) {
|
| 970 |
|
|
error(USER, "cannot use source as a sender");
|
| 971 |
|
|
return(-1);
|
| 972 |
|
|
}
|
| 973 |
|
|
if (strcmp(thismod, curmod)) {
|
| 974 |
|
|
if (curmod[0])
|
| 975 |
|
|
error(WARNING, "multiple modifiers in sender");
|
| 976 |
|
|
strcpy(curmod, thismod);
|
| 977 |
|
|
}
|
| 978 |
|
|
parse_params(&curparams, newparams);
|
| 979 |
|
|
newparams[0] = '\0';
|
| 980 |
|
|
add_surface(st, oname, fp); /* read & store surface */
|
| 981 |
|
|
return(0);
|
| 982 |
|
|
}
|
| 983 |
|
|
/* else skip arguments */
|
| 984 |
|
|
if (!fscanf(fp, "%d", &n)) return(0);
|
| 985 |
|
|
while (n-- > 0) fscanf(fp, "%*s");
|
| 986 |
|
|
if (!fscanf(fp, "%d", &n)) return(0);
|
| 987 |
|
|
while (n-- > 0) fscanf(fp, "%*d");
|
| 988 |
|
|
if (!fscanf(fp, "%d", &n)) return(0);
|
| 989 |
|
|
while (n-- > 0) fscanf(fp, "%*f");
|
| 990 |
|
|
return(0);
|
| 991 |
|
|
}
|
| 992 |
|
|
|
| 993 |
|
|
/* Load a Radiance scene using the given callback function for objects */
|
| 994 |
|
|
int
|
| 995 |
|
|
load_scene(const char *inspec, int (*ocb)(FILE *))
|
| 996 |
|
|
{
|
| 997 |
|
|
int rv = 0;
|
| 998 |
|
|
char inpbuf[1024];
|
| 999 |
|
|
FILE *fp;
|
| 1000 |
|
|
int c;
|
| 1001 |
|
|
|
| 1002 |
|
|
if (*inspec == '!')
|
| 1003 |
|
|
fp = popen(inspec+1, "r");
|
| 1004 |
|
|
else
|
| 1005 |
|
|
fp = fopen(inspec, "r");
|
| 1006 |
|
|
if (fp == NULL) {
|
| 1007 |
|
|
sprintf(errmsg, "cannot load '%s'", inspec);
|
| 1008 |
|
|
error(SYSTEM, errmsg);
|
| 1009 |
|
|
return(-1);
|
| 1010 |
|
|
}
|
| 1011 |
|
|
while ((c = getc(fp)) != EOF) { /* load sender/receiver data */
|
| 1012 |
|
|
if (isspace(c)) /* skip leading white space */
|
| 1013 |
|
|
continue;
|
| 1014 |
|
|
if (c == '!') { /* read from a new command */
|
| 1015 |
|
|
inpbuf[0] = c;
|
| 1016 |
|
|
if (fgetline(inpbuf+1, sizeof(inpbuf)-1, fp) != NULL) {
|
| 1017 |
|
|
if ((c = load_scene(inpbuf, ocb)) < 0)
|
| 1018 |
|
|
return(c);
|
| 1019 |
|
|
rv += c;
|
| 1020 |
|
|
}
|
| 1021 |
|
|
continue;
|
| 1022 |
|
|
}
|
| 1023 |
|
|
if (c == '#') { /* parameters/comment */
|
| 1024 |
|
|
if ((c = getc(fp)) == EOF)
|
| 1025 |
|
|
break;
|
| 1026 |
|
|
if (c == '@' && fscanf(fp, "%s", inpbuf) == 1 &&
|
| 1027 |
|
|
(!strcmp(inpbuf, PARAMSNAME) ||
|
| 1028 |
|
|
!strcmp(inpbuf, progname))) {
|
| 1029 |
|
|
if (fgets(inpbuf, sizeof(inpbuf), fp) != NULL)
|
| 1030 |
|
|
strlcat(newparams, inpbuf, sizeof(newparams));
|
| 1031 |
|
|
continue;
|
| 1032 |
|
|
}
|
| 1033 |
|
|
while (c != '\n' && (c = getc(fp)) != EOF)
|
| 1034 |
|
|
; /* ...skipping comment */
|
| 1035 |
|
|
continue;
|
| 1036 |
|
|
}
|
| 1037 |
|
|
ungetc(c, fp); /* else check object for receiver */
|
| 1038 |
|
|
c = (*ocb)(fp);
|
| 1039 |
|
|
if (c < 0)
|
| 1040 |
|
|
return(c);
|
| 1041 |
|
|
rv += c;
|
| 1042 |
|
|
}
|
| 1043 |
|
|
/* close our input stream */
|
| 1044 |
|
|
c = (*inspec == '!') ? pclose(fp) : fclose(fp);
|
| 1045 |
|
|
if (c != 0) {
|
| 1046 |
|
|
sprintf(errmsg, "error loading '%s'", inspec);
|
| 1047 |
|
|
error(SYSTEM, errmsg);
|
| 1048 |
|
|
return(-1);
|
| 1049 |
|
|
}
|
| 1050 |
|
|
return(rv);
|
| 1051 |
|
|
}
|
| 1052 |
|
|
|
| 1053 |
|
|
void
|
| 1054 |
|
|
wputs( /* warning output function */
|
| 1055 |
|
|
const char *s
|
| 1056 |
|
|
)
|
| 1057 |
|
|
{
|
| 1058 |
|
|
if (erract[WARNING].pf == NULL)
|
| 1059 |
|
|
return;
|
| 1060 |
|
|
int lasterrno = errno;
|
| 1061 |
|
|
eputs(s);
|
| 1062 |
|
|
errno = lasterrno;
|
| 1063 |
|
|
}
|
| 1064 |
|
|
|
| 1065 |
|
|
void
|
| 1066 |
|
|
eputs( /* put string to stderr */
|
| 1067 |
|
|
const char *s
|
| 1068 |
|
|
)
|
| 1069 |
|
|
{
|
| 1070 |
|
|
static int midline = 0;
|
| 1071 |
|
|
|
| 1072 |
|
|
if (!*s)
|
| 1073 |
|
|
return;
|
| 1074 |
|
|
if (!midline++) {
|
| 1075 |
|
|
fputs(progname, stderr);
|
| 1076 |
|
|
fputs(": ", stderr);
|
| 1077 |
|
|
}
|
| 1078 |
|
|
fputs(s, stderr);
|
| 1079 |
|
|
if (s[strlen(s)-1] == '\n') {
|
| 1080 |
|
|
fflush(stderr);
|
| 1081 |
|
|
midline = 0;
|
| 1082 |
|
|
}
|
| 1083 |
|
|
}
|
| 1084 |
|
|
|
| 1085 |
|
|
/* set input/output format */
|
| 1086 |
|
|
void
|
| 1087 |
|
|
setformat(const char *fmt)
|
| 1088 |
|
|
{
|
| 1089 |
|
|
switch (fmt[0]) {
|
| 1090 |
|
|
case 'f':
|
| 1091 |
|
|
case 'd':
|
| 1092 |
|
|
SET_FILE_BINARY(stdin);
|
| 1093 |
|
|
/* fall through */
|
| 1094 |
|
|
case 'a':
|
| 1095 |
|
|
inpfmt = fmt[0];
|
| 1096 |
|
|
break;
|
| 1097 |
|
|
case 'c':
|
| 1098 |
|
|
if (fmt[1])
|
| 1099 |
|
|
goto fmterr;
|
| 1100 |
|
|
outfmt = fmt[0]; // special case for output-only
|
| 1101 |
|
|
return;
|
| 1102 |
|
|
default:
|
| 1103 |
|
|
goto fmterr;
|
| 1104 |
|
|
}
|
| 1105 |
|
|
switch (fmt[1]) {
|
| 1106 |
|
|
case '\0':
|
| 1107 |
|
|
if (inpfmt == 'a')
|
| 1108 |
|
|
goto fmterr;
|
| 1109 |
|
|
outfmt = inpfmt;
|
| 1110 |
|
|
return;
|
| 1111 |
|
|
case 'f':
|
| 1112 |
|
|
case 'd':
|
| 1113 |
|
|
case 'c':
|
| 1114 |
|
|
outfmt = fmt[1];
|
| 1115 |
|
|
break;
|
| 1116 |
|
|
default:
|
| 1117 |
|
|
goto fmterr;
|
| 1118 |
|
|
}
|
| 1119 |
|
|
if (!fmt[2])
|
| 1120 |
|
|
return;
|
| 1121 |
|
|
fmterr:
|
| 1122 |
|
|
sprintf(errmsg, "unsupported i/o format: -f%s", fmt);
|
| 1123 |
|
|
error(USER, errmsg);
|
| 1124 |
|
|
}
|
| 1125 |
|
|
|
| 1126 |
|
|
inline double
|
| 1127 |
|
|
pixjitter()
|
| 1128 |
|
|
{
|
| 1129 |
|
|
return(0.5 + dstrpix*(frandom()-0.5));
|
| 1130 |
|
|
}
|
| 1131 |
|
|
|
| 1132 |
|
|
// Compute a set of view rays for the given pixel accumulator
|
| 1133 |
|
|
bool
|
| 1134 |
|
|
viewRays(FVECT orig_dir[], int x, int y)
|
| 1135 |
|
|
{
|
| 1136 |
|
|
for (int n = 0; n < myRCmanager.accum; orig_dir += 2, n++) {
|
| 1137 |
|
|
const double d = viewray(orig_dir[0], orig_dir[1], &ourview,
|
| 1138 |
|
|
(x+pixjitter())/myRCmanager.xres,
|
| 1139 |
|
|
(y+pixjitter())/myRCmanager.yres);
|
| 1140 |
|
|
// off-view sample?
|
| 1141 |
|
|
if (d < -FTINY || !jitteraperture(orig_dir[0], orig_dir[1],
|
| 1142 |
|
|
&ourview, dblur))
|
| 1143 |
|
|
memset(orig_dir+1, 0, sizeof(FVECT));
|
| 1144 |
|
|
else // else record distance to aft plane
|
| 1145 |
|
|
for (int i = 3*(d > FTINY); i--; )
|
| 1146 |
|
|
orig_dir[1][i] *= d;
|
| 1147 |
|
|
// accumulating identical samples?
|
| 1148 |
|
|
if (!n && (dstrpix <= 0.05) & (dblur <= FTINY)) {
|
| 1149 |
|
|
while (++n < myRCmanager.accum)
|
| 1150 |
|
|
memcpy(orig_dir[2*n], orig_dir[0], sizeof(FVECT)*2);
|
| 1151 |
|
|
break;
|
| 1152 |
|
|
}
|
| 1153 |
|
|
}
|
| 1154 |
|
|
return true;
|
| 1155 |
|
|
}
|
| 1156 |
|
|
|
| 1157 |
|
|
// Load a set of rays for accumulation (do not normalize direction)
|
| 1158 |
|
|
int
|
| 1159 |
|
|
getRays(FVECT orig_dir[])
|
| 1160 |
|
|
{
|
| 1161 |
|
|
int n;
|
| 1162 |
|
|
// read directly if possible
|
| 1163 |
|
|
if (inpfmt == "_fd"[sizeof(RREAL)/sizeof(float)])
|
| 1164 |
|
|
return(getbinary(orig_dir[0], sizeof(FVECT)*2,
|
| 1165 |
|
|
myRCmanager.accum, stdin));
|
| 1166 |
|
|
|
| 1167 |
|
|
for (n = 0; n < myRCmanager.accum; orig_dir += 2, n++) {
|
| 1168 |
|
|
switch (inpfmt) {
|
| 1169 |
|
|
#ifdef SMLFLT
|
| 1170 |
|
|
case 'd': { double dvin[6];
|
| 1171 |
|
|
if (getbinary(dvin, sizeof(dvin), 1, stdin) != 1)
|
| 1172 |
|
|
break;
|
| 1173 |
|
|
for (int i = 6; i--; ) orig_dir[0][i] = dvin[i];
|
| 1174 |
|
|
} continue;
|
| 1175 |
|
|
#else
|
| 1176 |
|
|
case 'f': { float fvin[6];
|
| 1177 |
|
|
if (getbinary(fvin, sizeof(fvin), 1, stdin) != 1)
|
| 1178 |
|
|
break;
|
| 1179 |
|
|
for (int i = 6; i--; ) orig_dir[0][i] = fvin[i];
|
| 1180 |
|
|
} continue;
|
| 1181 |
|
|
#endif
|
| 1182 |
|
|
case 'a':
|
| 1183 |
|
|
if (scanf(FVFORMAT, &orig_dir[0][0], &orig_dir[0][1],
|
| 1184 |
|
|
&orig_dir[0][2]) != 3)
|
| 1185 |
|
|
break;
|
| 1186 |
|
|
if (scanf(FVFORMAT, &orig_dir[1][0], &orig_dir[1][1],
|
| 1187 |
|
|
&orig_dir[1][2]) != 3)
|
| 1188 |
|
|
break;
|
| 1189 |
|
|
continue;
|
| 1190 |
|
|
}
|
| 1191 |
|
|
break;
|
| 1192 |
|
|
}
|
| 1193 |
|
|
return(n);
|
| 1194 |
|
|
}
|
| 1195 |
|
|
|
| 1196 |
|
|
/* Set default options */
|
| 1197 |
|
|
void
|
| 1198 |
|
|
default_options()
|
| 1199 |
|
|
{
|
| 1200 |
|
|
rand_samp = 1;
|
| 1201 |
|
|
dstrsrc = 0.9;
|
| 1202 |
|
|
directrelay = 3;
|
| 1203 |
|
|
vspretest = 512;
|
| 1204 |
|
|
srcsizerat = .2;
|
| 1205 |
|
|
specthresh = .02;
|
| 1206 |
|
|
specjitter = 1.;
|
| 1207 |
|
|
maxdepth = -10;
|
| 1208 |
|
|
minweight = 2e-3;
|
| 1209 |
|
|
ambres = 256;
|
| 1210 |
|
|
ambdiv = 350;
|
| 1211 |
|
|
ambounce = 1;
|
| 1212 |
|
|
}
|
| 1213 |
|
|
|
| 1214 |
|
|
/* Set overriding options */
|
| 1215 |
|
|
void
|
| 1216 |
|
|
override_options()
|
| 1217 |
|
|
{
|
| 1218 |
|
|
shadthresh = 0;
|
| 1219 |
|
|
ambssamp = 0;
|
| 1220 |
|
|
ambacc = 0;
|
| 1221 |
|
|
}
|
| 1222 |
|
|
|
| 1223 |
|
|
void
|
| 1224 |
|
|
onsig( /* fatal signal */
|
| 1225 |
|
|
int signo
|
| 1226 |
|
|
)
|
| 1227 |
|
|
{
|
| 1228 |
|
|
static int gotsig = 0;
|
| 1229 |
|
|
|
| 1230 |
|
|
if (gotsig++) /* two signals and we're gone! */
|
| 1231 |
|
|
_exit(signo);
|
| 1232 |
|
|
|
| 1233 |
|
|
#ifdef SIGALRM
|
| 1234 |
|
|
alarm(600); /* allow 10 minutes to clean up */
|
| 1235 |
|
|
signal(SIGALRM, SIG_DFL); /* make certain we do die */
|
| 1236 |
|
|
#endif
|
| 1237 |
|
|
eputs("signal - ");
|
| 1238 |
|
|
eputs(sigerr[signo]);
|
| 1239 |
|
|
eputs("\n");
|
| 1240 |
|
|
quit(3);
|
| 1241 |
|
|
}
|
| 1242 |
|
|
|
| 1243 |
|
|
void
|
| 1244 |
|
|
sigdie( /* set fatal signal */
|
| 1245 |
|
|
int signo,
|
| 1246 |
|
|
const char *msg
|
| 1247 |
|
|
)
|
| 1248 |
|
|
{
|
| 1249 |
|
|
if (signal(signo, onsig) == SIG_IGN)
|
| 1250 |
|
|
signal(signo, SIG_IGN);
|
| 1251 |
|
|
sigerr[signo] = msg;
|
| 1252 |
|
|
}
|
| 1253 |
|
|
|
| 1254 |
|
|
/* Run rfluxmtx equivalent without leaning on r[x]contrib */
|
| 1255 |
|
|
int
|
| 1256 |
|
|
main(int argc, char *argv[])
|
| 1257 |
|
|
{
|
| 1258 |
|
|
#define check(ol,al) if (argv[a][ol] || \
|
| 1259 |
|
|
badarg(argc-a-1,argv+a+1,al)) \
|
| 1260 |
|
|
goto userr
|
| 1261 |
|
|
#define check_bool(olen,var) switch (argv[a][olen]) { \
|
| 1262 |
|
|
case '\0': var = !var; break; \
|
| 1263 |
|
|
case 'y': case 'Y': case 't': case 'T': \
|
| 1264 |
|
|
case '+': case '1': var = 1; break; \
|
| 1265 |
|
|
case 'n': case 'N': case 'f': case 'F': \
|
| 1266 |
|
|
case '-': case '0': var = 0; break; \
|
| 1267 |
|
|
default: goto userr; }
|
| 1268 |
|
|
bool gotView = false;
|
| 1269 |
|
|
double pixaspect = 1.;
|
| 1270 |
|
|
int nproc = 1;
|
| 1271 |
|
|
int nout = 0;
|
| 1272 |
|
|
char *outfn = NULL;
|
| 1273 |
|
|
FVECT *rayarr = NULL;
|
| 1274 |
|
|
const char *sendfn = "";
|
| 1275 |
|
|
PARAMS sendparams;
|
| 1276 |
|
|
int rval;
|
| 1277 |
|
|
int a, i;
|
| 1278 |
|
|
/* set global progname */
|
| 1279 |
|
|
fixargv0(argv[0]);
|
| 1280 |
|
|
// just asking version?
|
| 1281 |
|
|
if (argc == 2 && !strcmp(argv[1], "-version")) {
|
| 1282 |
|
|
puts(VersionID);
|
| 1283 |
|
|
quit(0);
|
| 1284 |
|
|
}
|
| 1285 |
|
|
initfunc(); /* initialize calcomp routines first */
|
| 1286 |
|
|
calcontext(RCCONTEXT);
|
| 1287 |
|
|
/* set rcontrib defaults */
|
| 1288 |
|
|
default_options();
|
| 1289 |
|
|
/* get command-line options */
|
| 1290 |
|
|
for (a = 1; a < argc-2; a++) {
|
| 1291 |
|
|
/* check for argument expansion */
|
| 1292 |
|
|
while ((rval = expandarg(&argc, &argv, a)) > 0)
|
| 1293 |
|
|
;
|
| 1294 |
|
|
if (rval < 0) {
|
| 1295 |
|
|
sprintf(errmsg, "cannot expand '%s'", argv[a]);
|
| 1296 |
|
|
error(SYSTEM, errmsg);
|
| 1297 |
|
|
}
|
| 1298 |
|
|
if (argv[a][0] != '-' || !argv[a][1])
|
| 1299 |
|
|
break; // break from options
|
| 1300 |
|
|
rval = getrenderopt(argc-a, argv+a);
|
| 1301 |
|
|
if (rval >= 0) {
|
| 1302 |
|
|
a += rval;
|
| 1303 |
|
|
continue;
|
| 1304 |
|
|
}
|
| 1305 |
|
|
rval = getviewopt(&ourview, argc-a, argv+a);
|
| 1306 |
|
|
if (rval >= 0) {
|
| 1307 |
|
|
a += rval;
|
| 1308 |
|
|
gotView = true;
|
| 1309 |
|
|
continue;
|
| 1310 |
|
|
}
|
| 1311 |
|
|
switch (argv[a][1]) { /* !! Keep consistent !! */
|
| 1312 |
|
|
case 'W': /* verbose mode */
|
| 1313 |
|
|
check_bool(2,verby);
|
| 1314 |
|
|
break;
|
| 1315 |
|
|
case 'v': // view file
|
| 1316 |
|
|
if (argv[a][2] != 'f')
|
| 1317 |
|
|
goto userr;
|
| 1318 |
|
|
check(3,"s");
|
| 1319 |
|
|
rval = viewfile(argv[++a], &ourview, NULL);
|
| 1320 |
|
|
if (rval < 0) {
|
| 1321 |
|
|
sprintf(errmsg, "cannot open view file '%s'", argv[a]);
|
| 1322 |
|
|
error(SYSTEM, errmsg);
|
| 1323 |
|
|
} else if (!rval) {
|
| 1324 |
|
|
sprintf(errmsg, "bad view file '%s'", argv[a]);
|
| 1325 |
|
|
error(USER, errmsg);
|
| 1326 |
|
|
}
|
| 1327 |
|
|
gotView = true;
|
| 1328 |
|
|
break;
|
| 1329 |
|
|
case 'p': // -pj, -pd, or -pa
|
| 1330 |
|
|
switch (argv[a][2]) {
|
| 1331 |
|
|
case 'j': /* jitter */
|
| 1332 |
|
|
check(3,"f");
|
| 1333 |
|
|
dstrpix = atof(argv[++a]);
|
| 1334 |
|
|
break;
|
| 1335 |
|
|
case 'd': /* aperture */
|
| 1336 |
|
|
check(3,"f");
|
| 1337 |
|
|
dblur = atof(argv[++a]);
|
| 1338 |
|
|
break;
|
| 1339 |
|
|
case 'a': /* aspect */
|
| 1340 |
|
|
check(3,"f");
|
| 1341 |
|
|
pixaspect = atof(argv[++a]);
|
| 1342 |
|
|
break;
|
| 1343 |
|
|
default:
|
| 1344 |
|
|
goto userr;
|
| 1345 |
|
|
}
|
| 1346 |
|
|
break;
|
| 1347 |
|
|
case 'n': /* number of processes */
|
| 1348 |
|
|
check(2,"i");
|
| 1349 |
|
|
nproc = atoi(argv[++a]);
|
| 1350 |
|
|
if (nproc < 0 && (nproc += RadSimulManager::GetNCores()) <= 0)
|
| 1351 |
|
|
nproc = 1;
|
| 1352 |
|
|
break;
|
| 1353 |
|
|
case 'V': /* output contributions? */
|
| 1354 |
|
|
rval = myRCmanager.HasFlag(RCcontrib);
|
| 1355 |
|
|
check_bool(2,rval);
|
| 1356 |
|
|
myRCmanager.SetFlag(RCcontrib, rval);
|
| 1357 |
|
|
break;
|
| 1358 |
|
|
case 'x': /* x resolution */
|
| 1359 |
|
|
check(2,"i");
|
| 1360 |
|
|
myRCmanager.xres = atoi(argv[++a]);
|
| 1361 |
|
|
break;
|
| 1362 |
|
|
case 'y': /* y resolution */
|
| 1363 |
|
|
check(2,"i");
|
| 1364 |
|
|
myRCmanager.yres = atoi(argv[++a]);
|
| 1365 |
|
|
break;
|
| 1366 |
|
|
case 'w': /* warnings on/off */
|
| 1367 |
|
|
rval = (erract[WARNING].pf != NULL);
|
| 1368 |
|
|
check_bool(2,rval);
|
| 1369 |
|
|
if (rval) erract[WARNING].pf = wputs;
|
| 1370 |
|
|
else erract[WARNING].pf = NULL;
|
| 1371 |
|
|
break;
|
| 1372 |
|
|
case 'l': /* limit distance */
|
| 1373 |
|
|
if (argv[a][2] != 'd')
|
| 1374 |
|
|
goto userr;
|
| 1375 |
|
|
rval = myRCmanager.HasFlag(RTlimDist);
|
| 1376 |
|
|
check_bool(3,rval);
|
| 1377 |
|
|
myRCmanager.SetFlag(RTlimDist, rval);
|
| 1378 |
|
|
break;
|
| 1379 |
|
|
case 'I': /* immed. irradiance */
|
| 1380 |
|
|
rval = myRCmanager.HasFlag(RTimmIrrad);
|
| 1381 |
|
|
check_bool(2,rval);
|
| 1382 |
|
|
myRCmanager.SetFlag(RTimmIrrad, rval);
|
| 1383 |
|
|
break;
|
| 1384 |
|
|
case 'f': /* format */
|
| 1385 |
|
|
if (argv[a][2] == 'o')
|
| 1386 |
|
|
goto userr; /* -fo is not optional */
|
| 1387 |
|
|
setformat(argv[a]+2);
|
| 1388 |
|
|
myRCmanager.SetDataFormat(outfmt);
|
| 1389 |
|
|
break;
|
| 1390 |
|
|
case 'o': /* output file */
|
| 1391 |
|
|
check(2,"s");
|
| 1392 |
|
|
outfn = argv[++a];
|
| 1393 |
|
|
break;
|
| 1394 |
|
|
case 'c': /* sample count */
|
| 1395 |
|
|
check(2,"i");
|
| 1396 |
|
|
myRCmanager.accum = atoi(argv[++a]);
|
| 1397 |
|
|
break;
|
| 1398 |
|
|
default: /* anything else is verbotten */
|
| 1399 |
|
|
goto userr;
|
| 1400 |
|
|
}
|
| 1401 |
|
|
}
|
| 1402 |
|
|
if (a > argc-2)
|
| 1403 |
|
|
goto userr;
|
| 1404 |
|
|
|
| 1405 |
|
|
override_options(); /* override critical options */
|
| 1406 |
|
|
|
| 1407 |
|
|
if (!gotView)
|
| 1408 |
|
|
sendfn = argv[a++];
|
| 1409 |
|
|
else if (argv[a][0] == '-')
|
| 1410 |
|
|
error(USER, "view specification incompatible with pass-through mode");
|
| 1411 |
|
|
/* assign sender & receiver inputs */
|
| 1412 |
|
|
if (gotView) { // picture output?
|
| 1413 |
|
|
const char * err = setview(&ourview);
|
| 1414 |
|
|
if (err != NULL)
|
| 1415 |
|
|
error(USER, err);
|
| 1416 |
|
|
normaspect(viewaspect(&ourview), &pixaspect,
|
| 1417 |
|
|
&myRCmanager.xres, &myRCmanager.yres);
|
| 1418 |
|
|
if ((myRCmanager.xres <= 0) | (myRCmanager.yres <= 0))
|
| 1419 |
|
|
error(USER, "missing or illegal -x and -y resolution");
|
| 1420 |
|
|
myRCmanager.SetFlag(RTlimDist, ourview.vaft > FTINY);
|
| 1421 |
|
|
if (myRCmanager.accum <= 0)
|
| 1422 |
|
|
myRCmanager.accum = 1;
|
| 1423 |
|
|
} else if (sendfn[0] == '-') { // pass-through mode?
|
| 1424 |
|
|
if (sendfn[1]) goto userr;
|
| 1425 |
|
|
sendfn = NULL;
|
| 1426 |
|
|
if (myRCmanager.accum <= 0)
|
| 1427 |
|
|
myRCmanager.accum = 1;
|
| 1428 |
|
|
} else { // else surface sampling
|
| 1429 |
|
|
if (do_irrad | myRCmanager.HasFlag(RTimmIrrad))
|
| 1430 |
|
|
error(USER, "-i, -I not allowed in surface-sampling mode");
|
| 1431 |
|
|
myRCmanager.SetFlag(RTlimDist, false);
|
| 1432 |
|
|
if (load_scene(sendfn, add_send_object) < 0)
|
| 1433 |
|
|
quit(1);
|
| 1434 |
|
|
sendparams = curparams; // save sender params & clear current
|
| 1435 |
|
|
memset(&curparams, 0, sizeof(PARAMS));
|
| 1436 |
|
|
curmod[0] = '\0';
|
| 1437 |
|
|
myRCmanager.yres = prepare_sampler(&sendparams);
|
| 1438 |
|
|
if (myRCmanager.yres <= 0)
|
| 1439 |
|
|
quit(1);
|
| 1440 |
|
|
myRCmanager.xres = 0;
|
| 1441 |
|
|
if (myRCmanager.accum <= 1)
|
| 1442 |
|
|
myRCmanager.accum = 10000;
|
| 1443 |
|
|
}
|
| 1444 |
|
|
if (outfn != NULL) // saved from -o option above?
|
| 1445 |
|
|
strlcpy(curparams.outfn, outfn, sizeof(curparams.outfn));
|
| 1446 |
|
|
// get ready to rock...
|
| 1447 |
|
|
if (setspectrsamp(CNDX, WLPART) < 0)
|
| 1448 |
|
|
error(USER, "unsupported spectral sampling");
|
| 1449 |
|
|
/* set up signal handling */
|
| 1450 |
|
|
sigdie(SIGINT, "Interrupt");
|
| 1451 |
|
|
#ifdef SIGHUP
|
| 1452 |
|
|
sigdie(SIGHUP, "Hangup");
|
| 1453 |
|
|
#endif
|
| 1454 |
|
|
sigdie(SIGTERM, "Terminate");
|
| 1455 |
|
|
#ifdef SIGPIPE
|
| 1456 |
|
|
sigdie(SIGPIPE, "Broken pipe");
|
| 1457 |
|
|
#endif
|
| 1458 |
|
|
#ifdef SIGALRM
|
| 1459 |
|
|
sigdie(SIGALRM, "Alarm clock");
|
| 1460 |
|
|
#endif
|
| 1461 |
|
|
#ifdef SIGXCPU
|
| 1462 |
|
|
sigdie(SIGXCPU, "CPU limit exceeded");
|
| 1463 |
|
|
sigdie(SIGXFSZ, "File size exceeded");
|
| 1464 |
|
|
#endif
|
| 1465 |
|
|
#ifdef NICE
|
| 1466 |
|
|
nice(NICE); /* lower priority */
|
| 1467 |
|
|
#endif
|
| 1468 |
|
|
rayarr = new FVECT [myRCmanager.accum*2];
|
| 1469 |
|
|
// load octree
|
| 1470 |
|
|
if (!myRCmanager.LoadOctree(oconv_command(argc-a, argv+a)))
|
| 1471 |
|
|
quit(1);
|
| 1472 |
|
|
// add to header
|
| 1473 |
|
|
myRCmanager.AddHeader(argc, argv);
|
| 1474 |
|
|
{
|
| 1475 |
|
|
char buf[128] = "SOFTWARE= ";
|
| 1476 |
|
|
strcpy(buf+10, VersionID);
|
| 1477 |
|
|
myRCmanager.AddHeader(buf);
|
| 1478 |
|
|
if (gotView) {
|
| 1479 |
|
|
sprintf(buf, "%s%s", VIEWSTR, viewopt(&ourview));
|
| 1480 |
|
|
if (strlen(buf) > VIEWSTRL+3)
|
| 1481 |
|
|
myRCmanager.AddHeader(buf);
|
| 1482 |
|
|
}
|
| 1483 |
|
|
if ((pixaspect > .005) && (pixaspect < .995) |
|
| 1484 |
|
|
(pixaspect > 1.005)) {
|
| 1485 |
|
|
sprintf(buf, "%s%f", ASPECTSTR, pixaspect);
|
| 1486 |
|
|
myRCmanager.AddHeader(buf);
|
| 1487 |
|
|
}
|
| 1488 |
|
|
}
|
| 1489 |
|
|
/* assign receiver modifiers */
|
| 1490 |
|
|
if (load_scene(argv[a], add_recv_object) < 0)
|
| 1491 |
|
|
quit(1);
|
| 1492 |
|
|
finish_receiver(); // makes final AddModifier() call
|
| 1493 |
|
|
// prepare output(s)
|
| 1494 |
|
|
myRCmanager.outOp = RCOforce; // mandatory rcontrib -fo+ mode
|
| 1495 |
|
|
if (myRCmanager.PrepOutput() < 0)
|
| 1496 |
|
|
error(USER, "issue creating output file(s)");
|
| 1497 |
|
|
if (verby) // get output file count?
|
| 1498 |
|
|
for (const RcontribOutput *op = myRCmanager.GetOutput();
|
| 1499 |
|
|
op != NULL; op = op->Next())
|
| 1500 |
|
|
++nout;
|
| 1501 |
|
|
if (nproc > 1) { // set #processes
|
| 1502 |
|
|
if (verby)
|
| 1503 |
|
|
fprintf(stderr, "%s: starting %d subprocesses\n", progname, nproc);
|
| 1504 |
|
|
myRCmanager.SetThreadCount(nproc);
|
| 1505 |
|
|
}
|
| 1506 |
|
|
if (gotView) { // picture generation mode?
|
| 1507 |
|
|
if (verby) {
|
| 1508 |
|
|
fprintf(stderr, "%s: computing %d %dx%d pictures",
|
| 1509 |
|
|
progname, nout, myRCmanager.xres, myRCmanager.yres);
|
| 1510 |
|
|
if (myRCmanager.accum > 1)
|
| 1511 |
|
|
fprintf(stderr, " with %d samples/pixel\n", myRCmanager.accum);
|
| 1512 |
|
|
else
|
| 1513 |
|
|
fputc('\n', stderr);
|
| 1514 |
|
|
}
|
| 1515 |
|
|
for (i = myRCmanager.yres; i--; ) // from the top!
|
| 1516 |
|
|
for (int x = 0; x < myRCmanager.xres; x++) {
|
| 1517 |
|
|
if (!viewRays(rayarr, x, i))
|
| 1518 |
|
|
quit(1);
|
| 1519 |
|
|
if (myRCmanager.ComputeRecord(rayarr) != myRCmanager.accum)
|
| 1520 |
|
|
error(USER, "failed call to ComputeRecord()");
|
| 1521 |
|
|
}
|
| 1522 |
|
|
} else if (sendfn == NULL) { // pass-through mode?
|
| 1523 |
|
|
#ifdef getc_unlocked
|
| 1524 |
|
|
flockfile(stdin);
|
| 1525 |
|
|
#endif
|
| 1526 |
|
|
if (verby)
|
| 1527 |
|
|
fprintf(stderr,
|
| 1528 |
|
|
"%s: computing %d rows in %d matrices with %d samples/row\n",
|
| 1529 |
|
|
progname, myRCmanager.GetRowMax(), nout, myRCmanager.accum);
|
| 1530 |
|
|
for (i = myRCmanager.GetRowMax(); i-- > 0; ) {
|
| 1531 |
|
|
if (getRays(rayarr) != myRCmanager.accum) {
|
| 1532 |
|
|
sprintf(errmsg, "ray read error after %d of %d",
|
| 1533 |
|
|
myRCmanager.GetRowCount(),
|
| 1534 |
|
|
myRCmanager.GetRowMax());
|
| 1535 |
|
|
error(USER, errmsg);
|
| 1536 |
|
|
}
|
| 1537 |
|
|
if (myRCmanager.ComputeRecord(rayarr) != myRCmanager.accum)
|
| 1538 |
|
|
error(USER, "failed call to ComputeRecord()");
|
| 1539 |
|
|
}
|
| 1540 |
|
|
} else { // else surface-sampling mode
|
| 1541 |
|
|
if (verby) {
|
| 1542 |
|
|
fprintf(stderr,
|
| 1543 |
|
|
"%s: sampling %d directions in %d matrices with %d samples/direction",
|
| 1544 |
|
|
progname, myRCmanager.yres, nout, myRCmanager.accum);
|
| 1545 |
|
|
if (sendparams.nsurfs > 1)
|
| 1546 |
|
|
fprintf(stderr, " (%d surface elements)\n", sendparams.nsurfs);
|
| 1547 |
|
|
else
|
| 1548 |
|
|
fputc('\n', stderr);
|
| 1549 |
|
|
}
|
| 1550 |
|
|
for (i = 0; i < myRCmanager.yres; i++) {
|
| 1551 |
|
|
if (!(*sendparams.sample_basis)(&sendparams, i, rayarr))
|
| 1552 |
|
|
quit(1);
|
| 1553 |
|
|
if (myRCmanager.ComputeRecord(rayarr) != myRCmanager.accum)
|
| 1554 |
|
|
error(USER, "failed call to ComputeRecord()");
|
| 1555 |
|
|
}
|
| 1556 |
|
|
clear_params(&sendparams);
|
| 1557 |
|
|
}
|
| 1558 |
|
|
delete [] rayarr;
|
| 1559 |
|
|
quit(0); /* flushes and waits on children */
|
| 1560 |
|
|
userr:
|
| 1561 |
|
|
if (a < argc-2)
|
| 1562 |
|
|
fprintf(stderr, "%s: unsupported option '%s'", progname, argv[a]);
|
| 1563 |
|
|
fprintf(stderr, "Usage: %s [-W] [rxcontrib options] { sender.rad | view | - } receiver.rad [-i system.oct] [system.rad ..]\n",
|
| 1564 |
|
|
progname);
|
| 1565 |
|
|
quit(1);
|
| 1566 |
|
|
}
|
| 1567 |
|
|
|
| 1568 |
|
|
/* Exit program */
|
| 1569 |
|
|
void
|
| 1570 |
|
|
quit(
|
| 1571 |
|
|
int code
|
| 1572 |
|
|
)
|
| 1573 |
|
|
{
|
| 1574 |
|
|
myRCmanager.FlushQueue(); // leave nothing in queue
|
| 1575 |
|
|
|
| 1576 |
|
|
exit(code);
|
| 1577 |
|
|
}
|
