| 7 |
|
* G.Ward for LBNL |
| 8 |
|
*/ |
| 9 |
|
|
| 10 |
– |
#include <stdio.h> |
| 10 |
|
#include <stdlib.h> |
| 11 |
< |
#include <string.h> |
| 11 |
> |
#include "rtio.h" |
| 12 |
> |
#include "rtmath.h" |
| 13 |
> |
#include "random.h" |
| 14 |
|
#include "eplus_idf.h" |
| 15 |
|
#include "triangulate.h" |
| 16 |
|
#include "rtprocess.h" |
| 88 |
|
return(zptr); |
| 89 |
|
} |
| 90 |
|
|
| 91 |
< |
/* Determine if a parameter is a surface in the indicated zone */ |
| 92 |
< |
static int |
| 93 |
< |
in_zone(IDF_PARAMETER *param, const char *zname) |
| 91 |
> |
/* Return field for vertices in the given parameter */ |
| 92 |
> |
static IDF_FIELD * |
| 93 |
> |
get_vlist(IDF_PARAMETER *param, const char *zname) |
| 94 |
|
{ |
| 95 |
|
int i = 0; |
| 96 |
|
IDF_FIELD *fptr; |
| 97 |
|
/* check for surface type */ |
| 98 |
|
while (strcmp(surf_type[i].pname, param->pname)) |
| 99 |
|
if (surf_type[++i].pname == NULL) |
| 100 |
< |
return(0); |
| 101 |
< |
/* get zone field */ |
| 102 |
< |
fptr = idf_getfield(param, surf_type[i].zone_fld); |
| 103 |
< |
if (fptr == NULL) |
| 104 |
< |
return(0); |
| 105 |
< |
/* check for match */ |
| 106 |
< |
if (strcmp(fptr->arg, zname)) |
| 106 |
< |
return(0); |
| 100 |
> |
return(NULL); |
| 101 |
> |
|
| 102 |
> |
if (zname != NULL) { /* matches specified zone? */ |
| 103 |
> |
fptr = idf_getfield(param, surf_type[i].zone_fld); |
| 104 |
> |
if (fptr == NULL || strcmp(fptr->val, zname)) |
| 105 |
> |
return(NULL); |
| 106 |
> |
} |
| 107 |
|
/* return field for #verts */ |
| 108 |
< |
return(surf_type[i].vert_fld); |
| 108 |
> |
return(idf_getfield(param, surf_type[i].vert_fld)); |
| 109 |
|
} |
| 110 |
|
|
| 111 |
|
/* Convert surface to Radiance with modifier based on unique name */ |
| 112 |
|
static int |
| 113 |
< |
rad_surface(const char *zname, IDF_PARAMETER *param, FILE *ofp) |
| 113 |
> |
rad_surface(IDF_PARAMETER *param, FILE *ofp) |
| 114 |
|
{ |
| 115 |
< |
const char *sname = idf_getfield(param, NAME_FLD)->arg; |
| 116 |
< |
IDF_FIELD *fptr = idf_getfield(param, in_zone(param, zname)); |
| 115 |
> |
const char *sname = idf_getfield(param,NAME_FLD)->val; |
| 116 |
> |
IDF_FIELD *fptr = get_vlist(param, NULL); |
| 117 |
|
int nvert, i; |
| 118 |
|
|
| 119 |
< |
if (fptr == NULL || (nvert = atoi(fptr->arg)) < 3) { |
| 119 |
> |
if (fptr == NULL || (nvert = atoi(fptr->val)) < 3) { |
| 120 |
|
fprintf(stderr, "%s: bad surface '%s'\n", progname, sname); |
| 121 |
|
return(0); |
| 122 |
|
} |
| 125 |
|
while (nvert--) { |
| 126 |
|
for (i = 3; i--; ) { |
| 127 |
|
fptr = fptr->next; |
| 128 |
< |
if (fptr == NULL) { |
| 128 |
> |
if (fptr == NULL || !isflt(fptr->val)) { |
| 129 |
|
fprintf(stderr, |
| 130 |
< |
"%s: missing vertex fields in surface '%s'\n", |
| 131 |
< |
progname, sname); |
| 130 |
> |
"%s: missing/bad vertex for %s '%s'\n", |
| 131 |
> |
progname, param->pname, sname); |
| 132 |
|
return(0); |
| 133 |
|
} |
| 134 |
|
fputc('\t', ofp); |
| 135 |
< |
fputs(fptr->arg, ofp); |
| 135 |
> |
fputs(fptr->val, ofp); |
| 136 |
|
} |
| 137 |
|
fputc('\n', ofp); |
| 138 |
|
} |
| 139 |
|
return(!ferror(ofp)); |
| 140 |
|
} |
| 141 |
|
|
| 142 |
< |
/* Strat rcontrib process */ |
| 142 |
> |
/* Start rcontrib process */ |
| 143 |
|
static int |
| 144 |
|
start_rcontrib(SUBPROC *pd, ZONE *zp) |
| 145 |
|
{ |
| 169 |
|
av[i++] = "-c"; |
| 170 |
|
av[i++] = cbuf; /* add modifier arguments */ |
| 171 |
|
for (n = zp->nsurf, pptr = zp->pfirst; n--; pptr = pptr->dnext) { |
| 172 |
< |
IDF_FIELD *fptr = idf_getfield(pptr, NAME_FLD); |
| 173 |
< |
if (fptr == NULL) { |
| 172 |
> |
IDF_FIELD *fptr = idf_getfield(pptr,NAME_FLD); |
| 173 |
> |
if (fptr == NULL || !fptr->val[0]) { |
| 174 |
|
fputs(progname, stderr); |
| 175 |
|
fputs(": missing name for surface parameter\n", stderr); |
| 176 |
|
return(0); |
| 177 |
|
} |
| 178 |
< |
av[i++] = "-m"; |
| 179 |
< |
av[i++] = fptr->arg; |
| 180 |
< |
if (!rad_surface(zp->zname, pptr, ofp)) |
| 178 |
> |
if (!rad_surface(pptr, ofp)) /* add surface to octree */ |
| 179 |
|
return(0); |
| 180 |
+ |
av[i++] = "-m"; |
| 181 |
+ |
av[i++] = fptr->val; |
| 182 |
|
} |
| 183 |
|
if (pclose(ofp) != 0) { /* finish oconv */ |
| 184 |
|
fputs(progname, stderr); |
| 197 |
|
#undef BASE_AC |
| 198 |
|
} |
| 199 |
|
|
| 200 |
+ |
typedef struct { |
| 201 |
+ |
FVECT sdir[3]; /* XYZ unit sampling vectors */ |
| 202 |
+ |
double poff; /* Z-offset for plane of polygon */ |
| 203 |
+ |
double area_left; /* area left to sample */ |
| 204 |
+ |
int samp_left; /* remaining samples */ |
| 205 |
+ |
int wd; /* output file descriptor */ |
| 206 |
+ |
} POLYSAMP; /* structure for polygon sampling */ |
| 207 |
+ |
|
| 208 |
+ |
/* Initialize polygon sampling */ |
| 209 |
+ |
static Vert2_list * |
| 210 |
+ |
init_poly(POLYSAMP *ps, IDF_FIELD *f0, int nv) |
| 211 |
+ |
{ |
| 212 |
+ |
IDF_FIELD *fptr = f0; |
| 213 |
+ |
int i, j; |
| 214 |
+ |
FVECT *vl3, e1, e2, vc; |
| 215 |
+ |
Vert2_list *vl2 = polyAlloc(nv); |
| 216 |
+ |
|
| 217 |
+ |
if (vl2 == NULL) |
| 218 |
+ |
return(NULL); |
| 219 |
+ |
vl2->p = ps; |
| 220 |
+ |
/* get 3-D vertices */ |
| 221 |
+ |
vl3 = (FVECT *)malloc(sizeof(FVECT)*nv); |
| 222 |
+ |
if (vl3 == NULL) |
| 223 |
+ |
return(NULL); |
| 224 |
+ |
for (i = 0; i < nv; i++) |
| 225 |
+ |
for (j = 0; j < 3; j++) { |
| 226 |
+ |
if (fptr == NULL) { |
| 227 |
+ |
fputs(progname, stderr); |
| 228 |
+ |
fputs(": bad vertex in init_poly()\n", stderr); |
| 229 |
+ |
return(NULL); |
| 230 |
+ |
} |
| 231 |
+ |
vl3[i][j] = atof(fptr->val); |
| 232 |
+ |
} |
| 233 |
+ |
/* compute area and normal */ |
| 234 |
+ |
ps->sdir[2][0] = ps->sdir[2][1] = ps->sdir[2][2] = 0; |
| 235 |
+ |
VSUB(e1, vl3[1], vl3[0]); |
| 236 |
+ |
for (i = 2; i < nv; i++) { |
| 237 |
+ |
VSUB(e2, vl3[i], vl3[0]); |
| 238 |
+ |
fcross(vc, e1, e2); |
| 239 |
+ |
ps->sdir[2][0] += vc[0]; |
| 240 |
+ |
ps->sdir[2][1] += vc[1]; |
| 241 |
+ |
ps->sdir[2][2] += vc[2]; |
| 242 |
+ |
VCOPY(e1, e2); |
| 243 |
+ |
} |
| 244 |
+ |
ps->area_left = .5 * normalize(ps->sdir[2]); |
| 245 |
+ |
if (ps->area_left == .0) { |
| 246 |
+ |
fputs(progname, stderr); |
| 247 |
+ |
fputs(": degenerate polygon in init_poly()\n", stderr); |
| 248 |
+ |
return(0); |
| 249 |
+ |
} |
| 250 |
+ |
/* create X & Y axes */ |
| 251 |
+ |
VCOPY(ps->sdir[0], e1); |
| 252 |
+ |
normalize(ps->sdir[0]); |
| 253 |
+ |
fcross(ps->sdir[1], ps->sdir[2], ps->sdir[0]); |
| 254 |
+ |
/* compute plane offset */ |
| 255 |
+ |
ps->poff = DOT(vl3[0], ps->sdir[2]) + FTINY; |
| 256 |
+ |
/* assign 2-D vertices */ |
| 257 |
+ |
for (i = 0; i < nv; i++) { |
| 258 |
+ |
vl2->v[i].mX = DOT(vl3[i], ps->sdir[0]); |
| 259 |
+ |
vl2->v[i].mY = DOT(vl3[i], ps->sdir[1]); |
| 260 |
+ |
} |
| 261 |
+ |
free(vl3); /* it's ready! */ |
| 262 |
+ |
return(vl2); |
| 263 |
+ |
} |
| 264 |
+ |
|
| 265 |
+ |
/* Generate samples on 2-D triangle */ |
| 266 |
+ |
static int |
| 267 |
+ |
sample_triangle(const Vert2_list *vl2, int a, int b, int c) |
| 268 |
+ |
{ |
| 269 |
+ |
POLYSAMP *ps = (POLYSAMP *)vl2->p; |
| 270 |
+ |
float *samp; |
| 271 |
+ |
FVECT orig; |
| 272 |
+ |
FVECT ab, ac; |
| 273 |
+ |
double area; |
| 274 |
+ |
int i, j, ns; |
| 275 |
+ |
/* compute sampling axes */ |
| 276 |
+ |
for (i = 3; i--; ) { |
| 277 |
+ |
orig[i] = vl2->v[a].mX*ps->sdir[0][i] + |
| 278 |
+ |
vl2->v[a].mY*ps->sdir[1][i] + |
| 279 |
+ |
ps->poff*ps->sdir[2][i]; |
| 280 |
+ |
ab[i] = (vl2->v[b].mX - vl2->v[a].mX)*ps->sdir[0][i] + |
| 281 |
+ |
(vl2->v[b].mY - vl2->v[a].mY)*ps->sdir[1][i]; |
| 282 |
+ |
ac[i] = (vl2->v[c].mX - vl2->v[a].mX)*ps->sdir[0][i] + |
| 283 |
+ |
(vl2->v[c].mY - vl2->v[a].mY)*ps->sdir[1][i]; |
| 284 |
+ |
} |
| 285 |
+ |
/* compute number of samples to take */ |
| 286 |
+ |
area = .5*(vl2->v[a].mX*vl2->v[b].mY - vl2->v[b].mX*vl2->v[a].mY + |
| 287 |
+ |
vl2->v[b].mX*vl2->v[c].mY - vl2->v[c].mX*vl2->v[b].mY + |
| 288 |
+ |
vl2->v[c].mX*vl2->v[a].mY - vl2->v[a].mX*vl2->v[c].mY); |
| 289 |
+ |
if (area < .0) { |
| 290 |
+ |
fputs(progname, stderr); |
| 291 |
+ |
fputs(": negative triangle area in sample_triangle()\n", stderr); |
| 292 |
+ |
return(0); |
| 293 |
+ |
} |
| 294 |
+ |
if (area >= ps->area_left) { |
| 295 |
+ |
ns = ps->samp_left; |
| 296 |
+ |
ps->area_left = 0; |
| 297 |
+ |
} else { |
| 298 |
+ |
ns = (ps->samp_left*area/ps->area_left + .5); |
| 299 |
+ |
ps->samp_left -= ns; |
| 300 |
+ |
ps->area_left -= area; |
| 301 |
+ |
} |
| 302 |
+ |
if (ns <= 0) /* XXX should be error? */ |
| 303 |
+ |
return(1); |
| 304 |
+ |
/* buffer sample rays */ |
| 305 |
+ |
samp = (float *)malloc(sizeof(float)*6*ns); |
| 306 |
+ |
if (samp == NULL) |
| 307 |
+ |
return(0); |
| 308 |
+ |
for (i = ns; i--; ) { |
| 309 |
+ |
double sv[4]; |
| 310 |
+ |
multisamp(sv, 4, (i+frandom())/(double)ns); |
| 311 |
+ |
sv[0] *= sv[1] = sqrt(sv[1]); |
| 312 |
+ |
sv[1] = 1. - sv[1]; |
| 313 |
+ |
for (j = 3; j--; ) |
| 314 |
+ |
samp[ns*6 + j] = orig[j] + sv[0]*ab[j] + sv[1]*ac[j]; |
| 315 |
+ |
sv[3] = sqrt(sv[3]); |
| 316 |
+ |
sv[4] *= 2.*PI; |
| 317 |
+ |
samp[ns*6 + 3] = tcos(sv[4]) * sv[3]; |
| 318 |
+ |
samp[ns*6 + 4] = tsin(sv[4]) * sv[3]; |
| 319 |
+ |
samp[ns*6 + 5] = sqrt(1. - sv[3]*sv[3]); |
| 320 |
+ |
} |
| 321 |
+ |
/* send to our process */ |
| 322 |
+ |
writebuf(ps->wd, (char *)samp, sizeof(float)*6*ns); |
| 323 |
+ |
free(samp); /* that's it! */ |
| 324 |
+ |
return(1); |
| 325 |
+ |
} |
| 326 |
+ |
|
| 327 |
+ |
/* Sample the given surface */ |
| 328 |
+ |
static int |
| 329 |
+ |
sample_surface(IDF_PARAMETER *param, int wd) |
| 330 |
+ |
{ |
| 331 |
+ |
IDF_FIELD *fptr = get_vlist(param, NULL); |
| 332 |
+ |
POLYSAMP psamp; |
| 333 |
+ |
int nv; |
| 334 |
+ |
Vert2_list *vlist2; |
| 335 |
+ |
/* set up our polygon sampler */ |
| 336 |
+ |
if (fptr == NULL || (nv = atoi(fptr->val)) < 3) { |
| 337 |
+ |
fprintf(stderr, "%s: error in %s '%s'\n", |
| 338 |
+ |
progname, param->pname, |
| 339 |
+ |
idf_getfield(param,NAME_FLD)->val); |
| 340 |
+ |
return(0); |
| 341 |
+ |
} |
| 342 |
+ |
vlist2 = init_poly(&psamp, fptr->next, nv); |
| 343 |
+ |
if (vlist2 == NULL) |
| 344 |
+ |
return(0); |
| 345 |
+ |
psamp.samp_left = NSAMPLES; /* assign samples & destination */ |
| 346 |
+ |
psamp.wd = wd; |
| 347 |
+ |
/* sample each subtriangle */ |
| 348 |
+ |
if (!polyTriangulate(vlist2, &sample_triangle)) |
| 349 |
+ |
return(0); |
| 350 |
+ |
polyFree(vlist2); /* clean up and return */ |
| 351 |
+ |
return(1); |
| 352 |
+ |
} |
| 353 |
+ |
|
| 354 |
|
/* Compute User View Factors using open rcontrib process */ |
| 355 |
|
static int |
| 356 |
< |
compute_uvfs(SUBPROC *pd, ZONE *sp) |
| 356 |
> |
compute_uvfs(SUBPROC *pd, ZONE *zp) |
| 357 |
|
{ |
| 358 |
< |
|
| 358 |
> |
IDF_PARAMETER *pptr, *pout, *pptr1; |
| 359 |
> |
float *uvfa; |
| 360 |
> |
char uvfbuf[24]; |
| 361 |
> |
int n, m; |
| 362 |
> |
/* create output parameter */ |
| 363 |
> |
pout = idf_newparam(our_idf, UVF_PNAME, |
| 364 |
> |
" ! computed by Radiance\n ", zp->plast); |
| 365 |
> |
if (pout == NULL) { |
| 366 |
> |
fputs(progname, stderr); |
| 367 |
> |
fputs(": cannot create new IDF parameter\n", stderr); |
| 368 |
> |
return(0); |
| 369 |
> |
} |
| 370 |
> |
if (!idf_addfield(pout, zp->zname, |
| 371 |
> |
" !- Zone Name\n ")) { |
| 372 |
> |
fputs(progname, stderr); |
| 373 |
> |
fputs(": cannot add zone name field\n", stderr); |
| 374 |
> |
return(0); |
| 375 |
> |
} |
| 376 |
> |
/* allocate read buffer */ |
| 377 |
> |
uvfa = (float *)malloc(sizeof(float)*3*zp->nsurf); |
| 378 |
> |
if (uvfa == NULL) |
| 379 |
> |
return(0); |
| 380 |
> |
/* UVFs from each surface */ |
| 381 |
> |
for (n = zp->nsurf, pptr = zp->pfirst; n--; pptr = pptr->dnext) { |
| 382 |
> |
/* send samples to rcontrib */ |
| 383 |
> |
if (!sample_surface(pptr, pd->w)) |
| 384 |
> |
return(0); |
| 385 |
> |
/* read results */ |
| 386 |
> |
if (readbuf(pd->r, (char *)uvfa, sizeof(float)*3*zp->nsurf) != |
| 387 |
> |
sizeof(float)*3*zp->nsurf) { |
| 388 |
> |
fputs(progname, stderr); |
| 389 |
> |
fputs(": read error from rcontrib process\n", stderr); |
| 390 |
> |
return(0); |
| 391 |
> |
} |
| 392 |
> |
/* append UVF fields */ |
| 393 |
> |
for (m = 0, pptr1 = zp->pfirst; |
| 394 |
> |
m < zp->nsurf; m++, pptr1 = pptr1->dnext) { |
| 395 |
> |
if (pptr1 == pptr) { |
| 396 |
> |
if (uvfa[3*m + 1] > .001) |
| 397 |
> |
fprintf(stderr, |
| 398 |
> |
"%s: warning - non-zero self-VF (%.3e) for surface '%s'\n", |
| 399 |
> |
progname, uvfa[3*m + 1], |
| 400 |
> |
idf_getfield(pptr,NAME_FLD)->val); |
| 401 |
> |
continue; /* don't record self-factor */ |
| 402 |
> |
} |
| 403 |
> |
sprintf(uvfbuf, "%.6f", uvfa[3*m + 1]); |
| 404 |
> |
if (!idf_addfield(pout, |
| 405 |
> |
idf_getfield(pptr,NAME_FLD)->val, NULL) || |
| 406 |
> |
!idf_addfield(pout, |
| 407 |
> |
idf_getfield(pptr1,NAME_FLD)->val, NULL) || |
| 408 |
> |
!idf_addfield(pout, uvfbuf, |
| 409 |
> |
(n || m < zp->nsurf-2) ? |
| 410 |
> |
"\n " : "\n\n")) { |
| 411 |
> |
fputs(progname, stderr); |
| 412 |
> |
fputs(": error adding UVF fields\n", stderr); |
| 413 |
> |
return(0); |
| 414 |
> |
} |
| 415 |
> |
} |
| 416 |
> |
} |
| 417 |
> |
free(uvfa); /* clean up and return */ |
| 418 |
> |
return(1); |
| 419 |
|
} |
| 420 |
|
|
| 421 |
|
/* Compute zone User View Factors */ |
| 505 |
|
fputs(": warning - missing zone field\n", stderr); |
| 506 |
|
continue; |
| 507 |
|
} |
| 508 |
< |
if (add2zone(pptr, fptr->arg) == NULL) |
| 508 |
> |
if (add2zone(pptr, fptr->val) == NULL) |
| 509 |
|
return(1); |
| 510 |
|
} |
| 511 |
|
/* run rcontrib on each zone */ |
