| 8 |  | */ | 
| 9 |  |  | 
| 10 |  | #define _USE_MATH_DEFINES | 
| 11 | – | #include <stdio.h> | 
| 11 |  | #include <stdlib.h> | 
| 12 |  | #include <math.h> | 
| 13 | + | #include <ctype.h> | 
| 14 |  | #include "random.h" | 
| 15 |  | #include "platform.h" | 
| 16 |  | #include "paths.h" | 
| 19 |  | #include "bsdfrep.h" | 
| 20 |  | /* global argv[0] */ | 
| 21 |  | char                    *progname; | 
| 22 | + | /* reciprocity averaging option */ | 
| 23 | + | static const char       *recip = ""; | 
| 24 |  | /* percentage to cull (<0 to turn off) */ | 
| 25 |  | static double           pctcull = 90.; | 
| 26 |  | /* sampling order */ | 
| 27 |  | static int              samp_order = 6; | 
| 28 |  | /* super-sampling threshold */ | 
| 29 | < | const double            ssamp_thresh = 0.35; | 
| 29 | > | static double           ssamp_thresh = 0.35; | 
| 30 |  | /* number of super-samples */ | 
| 31 | < | #ifndef NSSAMP | 
| 30 | < | #define NSSAMP          64 | 
| 31 | < | #endif | 
| 31 | > | static int              nssamp = 256; | 
| 32 |  | /* limit on number of RBF lobes */ | 
| 33 |  | static int              lobe_lim = 15000; | 
| 34 |  | /* progress bar length */ | 
| 127 |  | eval_isotropic(char *funame) | 
| 128 |  | { | 
| 129 |  | const int       sqres = 1<<samp_order; | 
| 130 | + | const double    sqfact = 1./(double)sqres; | 
| 131 | + | float           *val_last = NULL; | 
| 132 | + | float           *val_next = NULL; | 
| 133 | + | SDValue         *sdv_next = NULL; | 
| 134 |  | FILE            *ofp, *uvfp[2]; | 
| 135 |  | int             assignD = 0; | 
| 136 |  | char            cmd[128]; | 
| 137 |  | int             ix, ox, oy; | 
| 138 | < | double          iovec[6]; | 
| 138 | > | RREAL           iovec[6]; | 
| 139 |  | float           bsdf, uv[2]; | 
| 140 |  |  | 
| 141 |  | if (pctcull >= 0) { | 
| 142 | < | sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", | 
| 143 | < | pctcull, samp_order, create_component_file(0)); | 
| 142 | > | sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", | 
| 143 | > | recip, pctcull, samp_order, create_component_file(0)); | 
| 144 |  | ofp = popen(cmd, "w"); | 
| 145 |  | if (ofp == NULL) { | 
| 146 |  | fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n", | 
| 153 |  | #endif | 
| 154 |  | if (rbf_colorimetry == RBCtristimulus) { | 
| 155 |  | double  uvcull = 100. - (100.-pctcull)*.25; | 
| 156 | < | sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", | 
| 157 | < | uvcull, samp_order, create_component_file(1)); | 
| 156 | > | sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", | 
| 157 | > | recip, uvcull, samp_order, create_component_file(1)); | 
| 158 |  | uvfp[0] = popen(cmd, "w"); | 
| 159 | < | sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", | 
| 160 | < | uvcull, samp_order, create_component_file(2)); | 
| 159 | > | sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", | 
| 160 | > | recip, uvcull, samp_order, create_component_file(2)); | 
| 161 |  | uvfp[1] = popen(cmd, "w"); | 
| 162 |  | if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { | 
| 163 |  | fprintf(stderr, "%s: cannot open pipes to uv output\n", | 
| 191 |  | } | 
| 192 |  | if (funame != NULL)                     /* need to assign Dx, Dy, Dz? */ | 
| 193 |  | assignD = (fundefined(funame) < 6); | 
| 194 | + | val_last = (float *)calloc(sqres, sizeof(float)); | 
| 195 | + | if (funame == NULL) | 
| 196 | + | sdv_next = (SDValue *)malloc(sizeof(SDValue)*sqres); | 
| 197 | + | else | 
| 198 | + | val_next = (float *)malloc(sizeof(float)*sqres); | 
| 199 |  | /* run through directions */ | 
| 200 |  | for (ix = 0; ix < sqres/2; ix++) { | 
| 201 | < | RBFNODE *rbf = NULL; | 
| 202 | < | iovec[0] = 2.*(ix+.5)/sqres - 1.; | 
| 203 | < | iovec[1] = .0; | 
| 204 | < | iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0]); | 
| 201 | > | const int       zipsgn = (ix & 1)*2 - 1; | 
| 202 | > | RBFNODE         *rbf = NULL; | 
| 203 | > | iovec[0] = 2.*sqfact*(ix+.5) - 1.; | 
| 204 | > | iovec[1] = zipsgn*sqfact*.5; | 
| 205 | > | iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0] | 
| 206 | > | - iovec[1]*iovec[1]); | 
| 207 |  | if (funame == NULL) | 
| 208 |  | rbf = advect_rbf(iovec, lobe_lim); | 
| 209 | + | /* presample first row */ | 
| 210 | + | for (oy = 0; oy < sqres; oy++) { | 
| 211 | + | square2disk(iovec+3, .5*sqfact, (oy+.5)*sqfact); | 
| 212 | + | iovec[5] = output_orient * | 
| 213 | + | sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); | 
| 214 | + | if (funame == NULL) { | 
| 215 | + | eval_rbfcol(&sdv_next[oy], rbf, iovec+3); | 
| 216 | + | } else { | 
| 217 | + | if (assignD) { | 
| 218 | + | varset("Dx", '=', -iovec[3]); | 
| 219 | + | varset("Dy", '=', -iovec[4]); | 
| 220 | + | varset("Dz", '=', -iovec[5]); | 
| 221 | + | ++eclock; | 
| 222 | + | } | 
| 223 | + | val_next[oy] = funvalue(funame, 6, iovec); | 
| 224 | + | } | 
| 225 | + | } | 
| 226 |  | for (ox = 0; ox < sqres; ox++) { | 
| 227 | < | float       last_bsdf = -1; | 
| 227 | > | /* | 
| 228 | > | * Super-sample when we detect a difference from before | 
| 229 | > | * or after in this row, above or below. | 
| 230 | > | */ | 
| 231 |  | for (oy = 0; oy < sqres; oy++) { | 
| 232 | < | SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); | 
| 233 | < | iovec[5] = output_orient * | 
| 232 | > | if (ox < sqres-1) {     /* keeping one row ahead... */ | 
| 233 | > | square2disk(iovec+3, (ox+1.5)*sqfact, (oy+.5)*sqfact); | 
| 234 | > | iovec[5] = output_orient * | 
| 235 |  | sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); | 
| 236 | + | } | 
| 237 |  | if (funame == NULL) { | 
| 238 | < | SDValue     sdv; | 
| 206 | < | eval_rbfcol(&sdv, rbf, iovec+3); | 
| 238 | > | SDValue     sdv = sdv_next[oy]; | 
| 239 |  | bsdf = sdv.cieY; | 
| 240 | < | if (rbf_colorimetry == RBCtristimulus) { | 
| 240 | > | if (ox < sqres-1) | 
| 241 | > | eval_rbfcol(&sdv_next[oy], rbf, iovec+3); | 
| 242 | > | if (abs_diff(bsdf, sdv_next[oy].cieY) > ssamp_thresh || | 
| 243 | > | (ox && abs_diff(bsdf, val_last[oy]) > ssamp_thresh) || | 
| 244 | > | (oy && abs_diff(bsdf, val_last[oy-1]) > ssamp_thresh) || | 
| 245 | > | (oy < sqres-1 && | 
| 246 | > | abs_diff(bsdf, sdv_next[oy+1].cieY) > ssamp_thresh)) { | 
| 247 | > | int     ssi; | 
| 248 | > | double  ssa[2], sum = 0, usum = 0, vsum = 0; | 
| 249 | > | /* super-sample voxel */ | 
| 250 | > | for (ssi = nssamp; ssi--; ) { | 
| 251 | > | SDmultiSamp(ssa, 2, (ssi+frandom()) / | 
| 252 | > | (double)nssamp); | 
| 253 | > | square2disk(iovec+3, (ox+ssa[0])*sqfact, | 
| 254 | > | (oy+ssa[1])*sqfact); | 
| 255 | > | iovec[5] = output_orient * | 
| 256 | > | sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); | 
| 257 | > | eval_rbfcol(&sdv, rbf, iovec+3); | 
| 258 | > | sum += sdv.cieY; | 
| 259 | > | if (rbf_colorimetry == RBCtristimulus) { | 
| 260 | > | sdv.cieY /= | 
| 261 | > | -2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.; | 
| 262 | > | usum += 4.*sdv.spec.cx * sdv.cieY; | 
| 263 | > | vsum += 9.*sdv.spec.cy * sdv.cieY; | 
| 264 | > | } | 
| 265 | > | } | 
| 266 | > | bsdf = sum / (double)nssamp; | 
| 267 | > | if (rbf_colorimetry == RBCtristimulus) { | 
| 268 | > | uv[0] = usum / (sum+FTINY); | 
| 269 | > | uv[1] = vsum / (sum+FTINY); | 
| 270 | > | } | 
| 271 | > | } else if (rbf_colorimetry == RBCtristimulus) { | 
| 272 |  | uv[0] = uv[1] = 1. / | 
| 273 |  | (-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); | 
| 274 |  | uv[0] *= 4.*sdv.spec.cx; | 
| 275 |  | uv[1] *= 9.*sdv.spec.cy; | 
| 276 |  | } | 
| 277 |  | } else { | 
| 278 | < | if (assignD) { | 
| 279 | < | varset("Dx", '=', -iovec[3]); | 
| 280 | < | varset("Dy", '=', -iovec[4]); | 
| 281 | < | varset("Dz", '=', -iovec[5]); | 
| 282 | < | ++eclock; | 
| 278 | > | bsdf = val_next[oy]; | 
| 279 | > | if (ox < sqres-1) { | 
| 280 | > | if (assignD) { | 
| 281 | > | varset("Dx", '=', -iovec[3]); | 
| 282 | > | varset("Dy", '=', -iovec[4]); | 
| 283 | > | varset("Dz", '=', -iovec[5]); | 
| 284 | > | ++eclock; | 
| 285 | > | } | 
| 286 | > | val_next[oy] = funvalue(funame, 6, iovec); | 
| 287 |  | } | 
| 288 | < | bsdf = funvalue(funame, 6, iovec); | 
| 289 | < | #if (NSSAMP > 0) | 
| 290 | < | if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { | 
| 288 | > | if (abs_diff(bsdf, val_next[oy]) > ssamp_thresh || | 
| 289 | > | (ox && abs_diff(bsdf, val_last[oy]) > ssamp_thresh) || | 
| 290 | > | (oy && abs_diff(bsdf, val_last[oy-1]) > ssamp_thresh) || | 
| 291 | > | (oy < sqres-1 && | 
| 292 | > | abs_diff(bsdf, val_next[oy+1]) > ssamp_thresh)) { | 
| 293 |  | int     ssi; | 
| 294 | < | double  ssa[3], ssvec[6], sum = 0; | 
| 294 | > | double  ssa[4], ssvec[6], sum = 0; | 
| 295 |  | /* super-sample voxel */ | 
| 296 | < | for (ssi = NSSAMP; ssi--; ) { | 
| 297 | < | SDmultiSamp(ssa, 3, (ssi+frandom()) * | 
| 298 | < | (1./NSSAMP)); | 
| 299 | < | ssvec[0] = 2.*(ix+ssa[0])/sqres - 1.; | 
| 300 | < | ssvec[1] = .0; | 
| 301 | < | ssvec[2] = input_orient * | 
| 302 | < | sqrt(1. - ssvec[0]*ssvec[0]); | 
| 303 | < | SDsquare2disk(ssvec+3, (ox+ssa[1])/sqres, | 
| 304 | < | (oy+ssa[2])/sqres); | 
| 296 | > | for (ssi = nssamp; ssi--; ) { | 
| 297 | > | SDmultiSamp(ssa, 4, (ssi+frandom()) / | 
| 298 | > | (double)nssamp); | 
| 299 | > | ssvec[0] = 2.*sqfact*(ix+ssa[0]) - 1.; | 
| 300 | > | ssvec[1] = zipsgn*sqfact*ssa[1]; | 
| 301 | > | ssvec[2] = 1. - ssvec[0]*ssvec[0] | 
| 302 | > | - ssvec[1]*ssvec[1]; | 
| 303 | > | if (ssvec[2] < .0) { | 
| 304 | > | ssvec[1] = 0; | 
| 305 | > | ssvec[2] = 1. - ssvec[0]*ssvec[0]; | 
| 306 | > | } | 
| 307 | > | ssvec[2] = input_orient * sqrt(ssvec[2]); | 
| 308 | > | square2disk(ssvec+3, (ox+ssa[2])*sqfact, | 
| 309 | > | (oy+ssa[3])*sqfact); | 
| 310 |  | ssvec[5] = output_orient * | 
| 311 |  | sqrt(1. - ssvec[3]*ssvec[3] - | 
| 312 |  | ssvec[4]*ssvec[4]); | 
| 318 |  | } | 
| 319 |  | sum += funvalue(funame, 6, ssvec); | 
| 320 |  | } | 
| 321 | < | bsdf = sum/NSSAMP; | 
| 321 | > | bsdf = sum / (double)nssamp; | 
| 322 |  | } | 
| 249 | – | #endif | 
| 323 |  | } | 
| 324 |  | if (pctcull >= 0) | 
| 325 |  | putbinary(&bsdf, sizeof(bsdf), 1, ofp); | 
| 335 |  | fprintf(uvfp[1], "\t%.3e\n", uv[1]); | 
| 336 |  | } | 
| 337 |  | } | 
| 338 | < | last_bsdf = bsdf; | 
| 338 | > | if (val_last != NULL) | 
| 339 | > | val_last[oy] = bsdf; | 
| 340 |  | } | 
| 341 |  | } | 
| 342 |  | if (rbf != NULL) | 
| 343 |  | free(rbf); | 
| 344 | < | prog_show((ix+1.)*(2./sqres)); | 
| 344 | > | prog_show((ix+1.)*(2.*sqfact)); | 
| 345 |  | } | 
| 346 |  | prog_done(); | 
| 347 | + | if (val_last != NULL) { | 
| 348 | + | free(val_last); | 
| 349 | + | if (val_next != NULL) free(val_next); | 
| 350 | + | if (sdv_next != NULL) free(sdv_next); | 
| 351 | + | } | 
| 352 |  | if (pctcull >= 0) {                     /* finish output */ | 
| 353 |  | if (pclose(ofp)) { | 
| 354 |  | fprintf(stderr, "%s: error running rttree_reduce on Y\n", | 
| 391 |  | eval_anisotropic(char *funame) | 
| 392 |  | { | 
| 393 |  | const int       sqres = 1<<samp_order; | 
| 394 | + | const double    sqfact = 1./(double)sqres; | 
| 395 | + | float           *val_last = NULL; | 
| 396 | + | float           *val_next = NULL; | 
| 397 | + | SDValue         *sdv_next = NULL; | 
| 398 |  | FILE            *ofp, *uvfp[2]; | 
| 399 |  | int             assignD = 0; | 
| 400 |  | char            cmd[128]; | 
| 401 |  | int             ix, iy, ox, oy; | 
| 402 | < | double          iovec[6]; | 
| 402 | > | RREAL           iovec[6]; | 
| 403 |  | float           bsdf, uv[2]; | 
| 404 |  |  | 
| 405 |  | if (pctcull >= 0) { | 
| 406 |  | const char      *avgopt = (input_orient>0 ^ output_orient>0) | 
| 407 | < | ? "" : " -a"; | 
| 407 | > | ? "" : recip; | 
| 408 |  | sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", | 
| 409 |  | avgopt, pctcull, samp_order, | 
| 410 |  | create_component_file(0)); | 
| 460 |  | } | 
| 461 |  | if (funame != NULL)                     /* need to assign Dx, Dy, Dz? */ | 
| 462 |  | assignD = (fundefined(funame) < 6); | 
| 463 | + | val_last = (float *)calloc(sqres, sizeof(float)); | 
| 464 | + | if (funame == NULL) | 
| 465 | + | sdv_next = (SDValue *)malloc(sizeof(SDValue)*sqres); | 
| 466 | + | else | 
| 467 | + | val_next = (float *)malloc(sizeof(float)*sqres); | 
| 468 |  | /* run through directions */ | 
| 469 |  | for (ix = 0; ix < sqres; ix++) | 
| 470 |  | for (iy = 0; iy < sqres; iy++) { | 
| 471 |  | RBFNODE *rbf = NULL;            /* Klems reversal */ | 
| 472 | < | SDsquare2disk(iovec, 1.-(ix+.5)/sqres, 1.-(iy+.5)/sqres); | 
| 472 | > | square2disk(iovec, 1.-(ix+.5)*sqfact, 1.-(iy+.5)*sqfact); | 
| 473 |  | iovec[2] = input_orient * | 
| 474 |  | sqrt(1. - iovec[0]*iovec[0] - iovec[1]*iovec[1]); | 
| 475 |  | if (funame == NULL) | 
| 476 |  | rbf = advect_rbf(iovec, lobe_lim); | 
| 477 | + | /* presample first row */ | 
| 478 | + | for (oy = 0; oy < sqres; oy++) { | 
| 479 | + | square2disk(iovec+3, .5*sqfact, (oy+.5)*sqfact); | 
| 480 | + | iovec[5] = output_orient * | 
| 481 | + | sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); | 
| 482 | + | if (funame == NULL) { | 
| 483 | + | eval_rbfcol(&sdv_next[oy], rbf, iovec+3); | 
| 484 | + | } else { | 
| 485 | + | if (assignD) { | 
| 486 | + | varset("Dx", '=', -iovec[3]); | 
| 487 | + | varset("Dy", '=', -iovec[4]); | 
| 488 | + | varset("Dz", '=', -iovec[5]); | 
| 489 | + | ++eclock; | 
| 490 | + | } | 
| 491 | + | val_next[oy] = funvalue(funame, 6, iovec); | 
| 492 | + | } | 
| 493 | + | } | 
| 494 |  | for (ox = 0; ox < sqres; ox++) { | 
| 495 | < | float       last_bsdf = -1; | 
| 495 | > | /* | 
| 496 | > | * Super-sample when we detect a difference from before | 
| 497 | > | * or after in this row, above or below. | 
| 498 | > | */ | 
| 499 |  | for (oy = 0; oy < sqres; oy++) { | 
| 500 | < | SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); | 
| 501 | < | iovec[5] = output_orient * | 
| 500 | > | if (ox < sqres-1) {     /* keeping one row ahead... */ | 
| 501 | > | square2disk(iovec+3, (ox+1.5)*sqfact, (oy+.5)*sqfact); | 
| 502 | > | iovec[5] = output_orient * | 
| 503 |  | sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); | 
| 504 | + | } | 
| 505 |  | if (funame == NULL) { | 
| 506 | < | SDValue     sdv; | 
| 397 | < | eval_rbfcol(&sdv, rbf, iovec+3); | 
| 506 | > | SDValue     sdv = sdv_next[oy]; | 
| 507 |  | bsdf = sdv.cieY; | 
| 508 | < | if (rbf_colorimetry == RBCtristimulus) { | 
| 508 | > | if (ox < sqres-1) | 
| 509 | > | eval_rbfcol(&sdv_next[oy], rbf, iovec+3); | 
| 510 | > | if (abs_diff(bsdf, sdv_next[oy].cieY) > ssamp_thresh || | 
| 511 | > | (ox && abs_diff(bsdf, val_last[oy]) > ssamp_thresh) || | 
| 512 | > | (oy && abs_diff(bsdf, val_last[oy-1]) > ssamp_thresh) || | 
| 513 | > | (oy < sqres-1 && | 
| 514 | > | abs_diff(bsdf, sdv_next[oy+1].cieY) > ssamp_thresh)) { | 
| 515 | > | int     ssi; | 
| 516 | > | double  ssa[2], sum = 0, usum = 0, vsum = 0; | 
| 517 | > | /* super-sample voxel */ | 
| 518 | > | for (ssi = nssamp; ssi--; ) { | 
| 519 | > | SDmultiSamp(ssa, 2, (ssi+frandom()) / | 
| 520 | > | (double)nssamp); | 
| 521 | > | square2disk(iovec+3, (ox+ssa[0])*sqfact, | 
| 522 | > | (oy+ssa[1])*sqfact); | 
| 523 | > | iovec[5] = output_orient * | 
| 524 | > | sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); | 
| 525 | > | eval_rbfcol(&sdv, rbf, iovec+3); | 
| 526 | > | sum += sdv.cieY; | 
| 527 | > | if (rbf_colorimetry == RBCtristimulus) { | 
| 528 | > | sdv.cieY /= | 
| 529 | > | -2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.; | 
| 530 | > | usum += 4.*sdv.spec.cx * sdv.cieY; | 
| 531 | > | vsum += 9.*sdv.spec.cy * sdv.cieY; | 
| 532 | > | } | 
| 533 | > | } | 
| 534 | > | bsdf = sum / (double)nssamp; | 
| 535 | > | if (rbf_colorimetry == RBCtristimulus) { | 
| 536 | > | uv[0] = usum / (sum+FTINY); | 
| 537 | > | uv[1] = vsum / (sum+FTINY); | 
| 538 | > | } | 
| 539 | > | } else if (rbf_colorimetry == RBCtristimulus) { | 
| 540 |  | uv[0] = uv[1] = 1. / | 
| 541 |  | (-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); | 
| 542 |  | uv[0] *= 4.*sdv.spec.cx; | 
| 543 |  | uv[1] *= 9.*sdv.spec.cy; | 
| 544 |  | } | 
| 545 |  | } else { | 
| 546 | < | if (assignD) { | 
| 547 | < | varset("Dx", '=', -iovec[3]); | 
| 548 | < | varset("Dy", '=', -iovec[4]); | 
| 549 | < | varset("Dz", '=', -iovec[5]); | 
| 550 | < | ++eclock; | 
| 546 | > | bsdf = val_next[oy]; | 
| 547 | > | if (ox < sqres-1) { | 
| 548 | > | if (assignD) { | 
| 549 | > | varset("Dx", '=', -iovec[3]); | 
| 550 | > | varset("Dy", '=', -iovec[4]); | 
| 551 | > | varset("Dz", '=', -iovec[5]); | 
| 552 | > | ++eclock; | 
| 553 | > | } | 
| 554 | > | val_next[oy] = funvalue(funame, 6, iovec); | 
| 555 |  | } | 
| 556 | < | bsdf = funvalue(funame, 6, iovec); | 
| 557 | < | #if (NSSAMP > 0) | 
| 558 | < | if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { | 
| 556 | > | if (abs_diff(bsdf, val_next[oy]) > ssamp_thresh || | 
| 557 | > | (ox && abs_diff(bsdf, val_last[oy]) > ssamp_thresh) || | 
| 558 | > | (oy && abs_diff(bsdf, val_last[oy-1]) > ssamp_thresh) || | 
| 559 | > | (oy < sqres-1 && | 
| 560 | > | abs_diff(bsdf, val_next[oy+1]) > ssamp_thresh)) { | 
| 561 |  | int     ssi; | 
| 562 |  | double  ssa[4], ssvec[6], sum = 0; | 
| 563 |  | /* super-sample voxel */ | 
| 564 | < | for (ssi = NSSAMP; ssi--; ) { | 
| 565 | < | SDmultiSamp(ssa, 4, (ssi+frandom()) * | 
| 566 | < | (1./NSSAMP)); | 
| 567 | < | SDsquare2disk(ssvec, 1.-(ix+ssa[0])/sqres, | 
| 568 | < | 1.-(iy+ssa[1])/sqres); | 
| 564 | > | for (ssi = nssamp; ssi--; ) { | 
| 565 | > | SDmultiSamp(ssa, 4, (ssi+frandom()) / | 
| 566 | > | (double)nssamp); | 
| 567 | > | square2disk(ssvec, 1.-(ix+ssa[0])*sqfact, | 
| 568 | > | 1.-(iy+ssa[1])*sqfact); | 
| 569 |  | ssvec[2] = input_orient * | 
| 570 |  | sqrt(1. - ssvec[0]*ssvec[0] - | 
| 571 |  | ssvec[1]*ssvec[1]); | 
| 572 | < | SDsquare2disk(ssvec+3, (ox+ssa[2])/sqres, | 
| 573 | < | (oy+ssa[3])/sqres); | 
| 572 | > | square2disk(ssvec+3, (ox+ssa[2])*sqfact, | 
| 573 | > | (oy+ssa[3])*sqfact); | 
| 574 |  | ssvec[5] = output_orient * | 
| 575 |  | sqrt(1. - ssvec[3]*ssvec[3] - | 
| 576 |  | ssvec[4]*ssvec[4]); | 
| 582 |  | } | 
| 583 |  | sum += funvalue(funame, 6, ssvec); | 
| 584 |  | } | 
| 585 | < | bsdf = sum/NSSAMP; | 
| 585 | > | bsdf = sum / (double)nssamp; | 
| 586 |  | } | 
| 441 | – | #endif | 
| 587 |  | } | 
| 588 |  | if (pctcull >= 0) | 
| 589 |  | putbinary(&bsdf, sizeof(bsdf), 1, ofp); | 
| 599 |  | fprintf(uvfp[1], "\t%.3e\n", uv[1]); | 
| 600 |  | } | 
| 601 |  | } | 
| 602 | < | last_bsdf = bsdf; | 
| 602 | > | if (val_last != NULL) | 
| 603 | > | val_last[oy] = bsdf; | 
| 604 |  | } | 
| 605 |  | } | 
| 606 |  | if (rbf != NULL) | 
| 608 |  | prog_show((ix*sqres+iy+1.)/(sqres*sqres)); | 
| 609 |  | } | 
| 610 |  | prog_done(); | 
| 611 | + | if (val_last != NULL) { | 
| 612 | + | free(val_last); | 
| 613 | + | if (val_next != NULL) free(val_next); | 
| 614 | + | if (sdv_next != NULL) free(sdv_next); | 
| 615 | + | } | 
| 616 |  | if (pctcull >= 0) {                     /* finish output */ | 
| 617 |  | if (pclose(ofp)) { | 
| 618 |  | fprintf(stderr, "%s: error running rttree_reduce on Y\n", | 
| 649 |  | static int | 
| 650 |  | wrap_up(void) | 
| 651 |  | { | 
| 652 | < | char    cmd[8192]; | 
| 652 | > | char    cmd[32700]; | 
| 653 |  |  | 
| 654 |  | if (bsdf_manuf[0]) { | 
| 655 |  | add_wbsdf("-f", 1); | 
| 700 |  | } | 
| 701 |  | #endif | 
| 702 |  |  | 
| 703 | + | #define HEAD_BUFLEN     10240 | 
| 704 | + | static char     head_buf[HEAD_BUFLEN]; | 
| 705 | + | static int      cur_headlen = 0; | 
| 706 | + |  | 
| 707 | + | /* Record header line as comment associated with this SIR input */ | 
| 708 | + | static int | 
| 709 | + | record2header(char *s) | 
| 710 | + | { | 
| 711 | + | int     len = strlen(s); | 
| 712 | + |  | 
| 713 | + | if (cur_headlen+len >= HEAD_BUFLEN-6) | 
| 714 | + | return(0); | 
| 715 | + | /* includes EOL */ | 
| 716 | + | strcpy(head_buf+cur_headlen, s); | 
| 717 | + | cur_headlen += len; | 
| 718 | + |  | 
| 719 | + | #if defined(_WIN32) || defined(_WIN64) | 
| 720 | + | if (head_buf[cur_headlen-1] == '\n') | 
| 721 | + | head_buf[cur_headlen-1] = '\t'; | 
| 722 | + | #endif | 
| 723 | + | return(1); | 
| 724 | + | } | 
| 725 | + |  | 
| 726 | + | /* Finish off header for this file */ | 
| 727 | + | static void | 
| 728 | + | done_header(void) | 
| 729 | + | { | 
| 730 | + | while (cur_headlen > 0 && isspace(head_buf[cur_headlen-1])) | 
| 731 | + | --cur_headlen; | 
| 732 | + | head_buf[cur_headlen] = '\0'; | 
| 733 | + | if (!cur_headlen) | 
| 734 | + | return; | 
| 735 | + | add_wbsdf("-C", 1); | 
| 736 | + | add_wbsdf(head_buf, 0); | 
| 737 | + | head_buf[cur_headlen=0] = '\0'; | 
| 738 | + | } | 
| 739 | + |  | 
| 740 |  | /* Read in BSDF and interpolate as tensor tree representation */ | 
| 741 |  | int | 
| 742 |  | main(int argc, char *argv[]) | 
| 743 |  | { | 
| 744 | < | static char     tfmt[2][4] = {"t4", "t3"}; | 
| 745 | < | int     dofwd = 0, dobwd = 1; | 
| 746 | < | char    buf[2048]; | 
| 747 | < | int     i, na; | 
| 744 | > | static const char       tfmt[2][4] = {"t4", "t3"}; | 
| 745 | > | int                     dofwd = 0, dobwd = 1; | 
| 746 | > | int                     nsirs = 0; | 
| 747 | > | char                    buf[1024]; | 
| 748 | > | int                     i; | 
| 749 |  |  | 
| 750 |  | progname = argv[0]; | 
| 751 |  | esupport |= E_VARIABLE|E_FUNCTION|E_RCONST; | 
| 752 |  | esupport &= ~(E_INCHAN|E_OUTCHAN); | 
| 753 |  | scompile("PI:3.14159265358979323846", NULL, 0); | 
| 754 |  | biggerlib(); | 
| 755 | < | for (i = 1; i < argc-1 && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) | 
| 756 | < | switch (argv[i][1]) {           /* get options */ | 
| 755 | > | strcpy(buf, "File produced by: "); | 
| 756 | > | if (convert_commandline(buf+18, sizeof(buf)-18, argv) != NULL) { | 
| 757 | > | add_wbsdf("-C", 1); add_wbsdf(buf, 0); | 
| 758 | > | } | 
| 759 | > | for (i = 1; i < argc; i++) | 
| 760 | > | if ((argv[i][0] == '-') | (argv[i][0] == '+')) { | 
| 761 | > | switch (argv[i][1]) {           /* get option */ | 
| 762 |  | case 'e': | 
| 763 |  | scompile(argv[++i], NULL, 0); | 
| 764 | + | if (single_plane_incident < 0) | 
| 765 | + | single_plane_incident = 0; | 
| 766 |  | break; | 
| 767 |  | case 'f': | 
| 768 | < | if (!argv[i][2]) { | 
| 768 | > | if ((argv[i][0] == '-') & !argv[i][2]) { | 
| 769 |  | if (strchr(argv[++i], '=') != NULL) { | 
| 770 |  | add_wbsdf("-f", 1); | 
| 771 |  | add_wbsdf(argv[i], 1); | 
| 772 | < | } else | 
| 773 | < | fcompile(argv[i]); | 
| 772 | > | } else { | 
| 773 | > | char    *fpath = getpath(argv[i], | 
| 774 | > | getrlibpath(), 0); | 
| 775 | > | if (fpath == NULL) { | 
| 776 | > | fprintf(stderr, | 
| 777 | > | "%s: cannot find file '%s'\n", | 
| 778 | > | argv[0], argv[i]); | 
| 779 | > | return(1); | 
| 780 | > | } | 
| 781 | > | fcompile(fpath); | 
| 782 | > | if (single_plane_incident < 0) | 
| 783 | > | single_plane_incident = 0; | 
| 784 | > | } | 
| 785 |  | } else | 
| 786 |  | dofwd = (argv[i][0] == '+'); | 
| 787 |  | break; | 
| 788 | + | case 'a': | 
| 789 | + | recip = (argv[i][0] == '+') ? " -a" : ""; | 
| 790 | + | break; | 
| 791 |  | case 'b': | 
| 792 |  | dobwd = (argv[i][0] == '+'); | 
| 793 |  | break; | 
| 794 | + | case 'n': | 
| 795 | + | nssamp = atoi(argv[++i]); | 
| 796 | + | if (nssamp <= 0) | 
| 797 | + | goto userr; | 
| 798 | + | break; | 
| 799 | + | case 's': | 
| 800 | + | ssamp_thresh = atof(argv[++i]); | 
| 801 | + | if (ssamp_thresh <= FTINY) | 
| 802 | + | goto userr; | 
| 803 | + | break; | 
| 804 |  | case 't': | 
| 805 |  | switch (argv[i][2]) { | 
| 806 |  | case '3': | 
| 836 |  | default: | 
| 837 |  | goto userr; | 
| 838 |  | } | 
| 839 | < | strcpy(buf, "File produced by: "); | 
| 840 | < | if (convert_commandline(buf+18, sizeof(buf)-18, argv) != NULL) { | 
| 841 | < | add_wbsdf("-C", 1); add_wbsdf(buf, 0); | 
| 842 | < | } | 
| 843 | < | if (single_plane_incident >= 0) {       /* function-based BSDF? */ | 
| 839 | > | } else {                            /* input SIR or function */ | 
| 840 | > | FILE    *fpin; | 
| 841 | > | if (!nsirs & (single_plane_incident >= 0)) | 
| 842 | > | break;                  /* must be a function */ | 
| 843 | > | if (nsirs >= 4) { | 
| 844 | > | fprintf(stderr, "At most 4 SIR inputs supported\n"); | 
| 845 | > | goto userr; | 
| 846 | > | } | 
| 847 | > | fpin = fopen(argv[i], "rb");    /* open SIR file */ | 
| 848 | > | if (fpin == NULL) { | 
| 849 | > | fprintf(stderr, "%s: cannot open BSDF interpolant '%s'\n", | 
| 850 | > | progname, argv[i]); | 
| 851 | > | return(1); | 
| 852 | > | } | 
| 853 | > | sprintf(buf, "%s:\n", argv[i]); | 
| 854 | > | record2header(buf); | 
| 855 | > | sir_headshare = &record2header; | 
| 856 | > | if (!load_bsdf_rep(fpin)) | 
| 857 | > | return(1); | 
| 858 | > | fclose(fpin); | 
| 859 | > | done_header(); | 
| 860 | > | sprintf(buf, "Interpolating component '%s'", argv[i]); | 
| 861 | > | prog_start(buf); | 
| 862 | > | if (!nsirs++) { | 
| 863 | > | add_wbsdf("-a", 1); | 
| 864 | > | add_wbsdf(tfmt[single_plane_incident], 1); | 
| 865 | > | } | 
| 866 | > | if (single_plane_incident) | 
| 867 | > | eval_isotropic(NULL); | 
| 868 | > | else | 
| 869 | > | eval_anisotropic(NULL); | 
| 870 | > | } | 
| 871 | > | if (i < argc) {                         /* function-based BSDF? */ | 
| 872 |  | void    (*evf)(char *s) = single_plane_incident ? | 
| 873 |  | eval_isotropic : eval_anisotropic; | 
| 874 |  | if (i != argc-1 || fundefined(argv[i]) < 3) { | 
| 899 |  | prog_start("Evaluating inside->outside transmission"); | 
| 900 |  | (*evf)(argv[i]); | 
| 901 |  | } | 
| 902 | < | return(wrap_up()); | 
| 902 | > | } else if (!nsirs) {                    /* else load SIR from stdin? */ | 
| 903 | > | record2header("<stdin>:\n"); | 
| 904 | > | sir_headshare = &record2header; | 
| 905 | > | if (!load_bsdf_rep(stdin)) | 
| 906 | > | return(1); | 
| 907 | > | done_header(); | 
| 908 | > | prog_start("Interpolating from standard input"); | 
| 909 | > | add_wbsdf("-a", 1); | 
| 910 | > | add_wbsdf(tfmt[single_plane_incident], 1); | 
| 911 | > | if (single_plane_incident)      /* resample dist. */ | 
| 912 | > | eval_isotropic(NULL); | 
| 913 | > | else | 
| 914 | > | eval_anisotropic(NULL); | 
| 915 |  | } | 
| 916 | < | if (i < argc) {                         /* open input files if given */ | 
| 657 | < | int     nbsdf = 0; | 
| 658 | < | for ( ; i < argc; i++) {        /* interpolate each component */ | 
| 659 | < | char    pbuf[256]; | 
| 660 | < | FILE    *fpin = fopen(argv[i], "rb"); | 
| 661 | < | if (fpin == NULL) { | 
| 662 | < | fprintf(stderr, "%s: cannot open BSDF interpolant '%s'\n", | 
| 663 | < | progname, argv[i]); | 
| 664 | < | return(1); | 
| 665 | < | } | 
| 666 | < | if (!load_bsdf_rep(fpin)) | 
| 667 | < | return(1); | 
| 668 | < | fclose(fpin); | 
| 669 | < | sprintf(pbuf, "Interpolating component '%s'", argv[i]); | 
| 670 | < | prog_start(pbuf); | 
| 671 | < | if (!nbsdf++) { | 
| 672 | < | add_wbsdf("-a", 1); | 
| 673 | < | add_wbsdf(tfmt[single_plane_incident], 1); | 
| 674 | < | } | 
| 675 | < | if (single_plane_incident) | 
| 676 | < | eval_isotropic(NULL); | 
| 677 | < | else | 
| 678 | < | eval_anisotropic(NULL); | 
| 679 | < | } | 
| 680 | < | return(wrap_up()); | 
| 681 | < | } | 
| 682 | < | SET_FILE_BINARY(stdin);                 /* load from stdin */ | 
| 683 | < | if (!load_bsdf_rep(stdin)) | 
| 684 | < | return(1); | 
| 685 | < | prog_start("Interpolating from standard input"); | 
| 686 | < | add_wbsdf("-a", 1); | 
| 687 | < | add_wbsdf(tfmt[single_plane_incident], 1); | 
| 688 | < | if (single_plane_incident)              /* resample dist. */ | 
| 689 | < | eval_isotropic(NULL); | 
| 690 | < | else | 
| 691 | < | eval_anisotropic(NULL); | 
| 692 | < |  | 
| 693 | < | return(wrap_up()); | 
| 916 | > | return(wrap_up());                      /* call wrapBSDF */ | 
| 917 |  | userr: | 
| 918 |  | fprintf(stderr, | 
| 919 | < | "Usage: %s [-g Nlog2][-t pctcull][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", | 
| 919 | > | "Usage: %s [{+|-}a][-g Nlog2][-t pctcull][-n nss][-s thresh][-l maxlobes][bsdf.sir ..] > bsdf.xml\n", | 
| 920 |  | progname); | 
| 921 |  | fprintf(stderr, | 
| 922 | < | "   or: %s -t{3|4} [-g Nlog2][-t pctcull][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", | 
| 922 | > | "   or: %s -t{3|4} [{+|-}a][-g Nlog2][-t pctcull][-n nss][-s thresh][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", | 
| 923 |  | progname); | 
| 924 |  | return(1); | 
| 925 |  | } |