| 20 |
|
double pctcull = 90.; |
| 21 |
|
/* sampling order */ |
| 22 |
|
int samp_order = 6; |
| 23 |
+ |
/* super-sampling threshold */ |
| 24 |
+ |
const double ssamp_thresh = 0.35; |
| 25 |
+ |
/* number of super-samples */ |
| 26 |
+ |
const int nssamp = 100; |
| 27 |
+ |
/* limit on number of RBF lobes */ |
| 28 |
+ |
static int lobe_lim = 15000; |
| 29 |
|
|
| 30 |
|
/* Output XML prologue to stdout */ |
| 31 |
|
static void |
| 44 |
|
puts("<Optical>"); |
| 45 |
|
puts("<Layer>"); |
| 46 |
|
puts("\t<Material>"); |
| 47 |
< |
puts("\t\t<Name>Name</Name>"); |
| 48 |
< |
puts("\t\t<Manufacturer>Manufacturer</Manufacturer>"); |
| 47 |
> |
printf("\t\t<Name>%s</Name>\n", bsdf_name[0] ? bsdf_name : "Unknown"); |
| 48 |
> |
printf("\t\t<Manufacturer>%s</Manufacturer>\n", |
| 49 |
> |
bsdf_manuf[0] ? bsdf_manuf : "Unknown"); |
| 50 |
|
puts("\t\t<DeviceType>Other</DeviceType>"); |
| 51 |
|
puts("\t</Material>"); |
| 52 |
|
puts("\t<DataDefinition>"); |
| 97 |
|
puts("</WindowElement>"); |
| 98 |
|
} |
| 99 |
|
|
| 100 |
+ |
/* Compute absolute relative difference */ |
| 101 |
+ |
static double |
| 102 |
+ |
abs_diff(double v1, double v0) |
| 103 |
+ |
{ |
| 104 |
+ |
if ((v0 < 0) | (v1 < 0)) |
| 105 |
+ |
return(.0); |
| 106 |
+ |
v1 = (v1-v0)*2./(v0+v1+.0001); |
| 107 |
+ |
if (v1 < 0) |
| 108 |
+ |
return(-v1); |
| 109 |
+ |
return(v1); |
| 110 |
+ |
} |
| 111 |
+ |
|
| 112 |
|
/* Interpolate and output isotropic BSDF data */ |
| 113 |
|
static void |
| 114 |
|
eval_isotropic(char *funame) |
| 115 |
|
{ |
| 116 |
|
const int sqres = 1<<samp_order; |
| 117 |
|
FILE *ofp = NULL; |
| 118 |
+ |
int assignD = 0; |
| 119 |
|
char cmd[128]; |
| 120 |
|
int ix, ox, oy; |
| 121 |
|
double iovec[6]; |
| 122 |
|
float bsdf; |
| 123 |
< |
#if DEBUG |
| 104 |
< |
fprintf(stderr, "Writing isotropic order %d ", samp_order); |
| 105 |
< |
if (pctcull >= 0) fprintf(stderr, "data with %.1f%% culling\n", pctcull); |
| 106 |
< |
else fputs("raw data\n", stderr); |
| 107 |
< |
#endif |
| 123 |
> |
|
| 124 |
|
data_prologue(); /* begin output */ |
| 125 |
|
if (pctcull >= 0) { |
| 126 |
< |
sprintf(cmd, "rttree_reduce -h -a -ff -r 3 -t %f -g %d", |
| 126 |
> |
sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d", |
| 127 |
|
pctcull, samp_order); |
| 128 |
|
fflush(stdout); |
| 129 |
|
ofp = popen(cmd, "w"); |
| 135 |
|
SET_FILE_BINARY(ofp); |
| 136 |
|
} else |
| 137 |
|
fputs("{\n", stdout); |
| 138 |
+ |
/* need to assign Dx, Dy, Dz? */ |
| 139 |
+ |
if (funame != NULL) |
| 140 |
+ |
assignD = (fundefined(funame) < 6); |
| 141 |
|
/* run through directions */ |
| 142 |
|
for (ix = 0; ix < sqres/2; ix++) { |
| 143 |
|
RBFNODE *rbf = NULL; |
| 144 |
< |
iovec[0] = (ix+.5)/sqres - 1.; |
| 144 |
> |
iovec[0] = 2.*(ix+.5)/sqres - 1.; |
| 145 |
|
iovec[1] = .0; |
| 146 |
|
iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0]); |
| 147 |
|
if (funame == NULL) |
| 148 |
< |
rbf = advect_rbf(iovec); |
| 149 |
< |
for (ox = 0; ox < sqres; ox++) |
| 148 |
> |
rbf = advect_rbf(iovec, lobe_lim); |
| 149 |
> |
for (ox = 0; ox < sqres; ox++) { |
| 150 |
> |
float last_bsdf = -1; |
| 151 |
|
for (oy = 0; oy < sqres; oy++) { |
| 152 |
|
SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); |
| 153 |
|
iovec[5] = output_orient * |
| 154 |
|
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
| 155 |
|
if (funame == NULL) |
| 156 |
< |
bsdf = eval_rbfrep(rbf, iovec+3) * |
| 156 |
> |
bsdf = eval_rbfrep(rbf, iovec+3) * |
| 157 |
|
output_orient/iovec[5]; |
| 158 |
< |
else |
| 159 |
< |
bsdf = funvalue(funame, 6, iovec); |
| 158 |
> |
else { |
| 159 |
> |
double ssa[3], ssvec[6], sum; |
| 160 |
> |
int ssi; |
| 161 |
> |
if (assignD) { |
| 162 |
> |
varset("Dx", '=', -iovec[3]); |
| 163 |
> |
varset("Dy", '=', -iovec[4]); |
| 164 |
> |
varset("Dz", '=', -iovec[5]); |
| 165 |
> |
++eclock; |
| 166 |
> |
} |
| 167 |
> |
bsdf = funvalue(funame, 6, iovec); |
| 168 |
> |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
| 169 |
> |
sum = 0; /* super-sample voxel */ |
| 170 |
> |
for (ssi = nssamp; ssi--; ) { |
| 171 |
> |
SDmultiSamp(ssa, 3, (ssi+drand48())/nssamp); |
| 172 |
> |
ssvec[0] = 2.*(ix+ssa[0])/sqres - 1.; |
| 173 |
> |
ssvec[1] = .0; |
| 174 |
> |
ssvec[2] = input_orient * |
| 175 |
> |
sqrt(1. - ssvec[0]*ssvec[0]); |
| 176 |
> |
SDsquare2disk(ssvec+3, (ox+ssa[1])/sqres, |
| 177 |
> |
(oy+ssa[2])/sqres); |
| 178 |
> |
ssvec[5] = output_orient * |
| 179 |
> |
sqrt(1. - ssvec[3]*ssvec[3] - |
| 180 |
> |
ssvec[4]*ssvec[4]); |
| 181 |
> |
if (assignD) { |
| 182 |
> |
varset("Dx", '=', -iovec[3]); |
| 183 |
> |
varset("Dy", '=', -iovec[4]); |
| 184 |
> |
varset("Dz", '=', -iovec[5]); |
| 185 |
> |
++eclock; |
| 186 |
> |
} |
| 187 |
> |
sum += funvalue(funame, 6, ssvec); |
| 188 |
> |
} |
| 189 |
> |
bsdf = sum/nssamp; |
| 190 |
> |
} |
| 191 |
> |
} |
| 192 |
|
if (pctcull >= 0) |
| 193 |
|
fwrite(&bsdf, sizeof(bsdf), 1, ofp); |
| 194 |
|
else |
| 195 |
|
printf("\t%.3e\n", bsdf); |
| 196 |
+ |
last_bsdf = bsdf; |
| 197 |
|
} |
| 198 |
+ |
} |
| 199 |
|
if (rbf != NULL) |
| 200 |
|
free(rbf); |
| 201 |
|
} |
| 219 |
|
{ |
| 220 |
|
const int sqres = 1<<samp_order; |
| 221 |
|
FILE *ofp = NULL; |
| 222 |
+ |
int assignD = 0; |
| 223 |
|
char cmd[128]; |
| 224 |
|
int ix, iy, ox, oy; |
| 225 |
|
double iovec[6]; |
| 226 |
|
float bsdf; |
| 227 |
< |
#if DEBUG |
| 173 |
< |
fprintf(stderr, "Writing anisotropic order %d ", samp_order); |
| 174 |
< |
if (pctcull >= 0) fprintf(stderr, "data with %.1f%% culling\n", pctcull); |
| 175 |
< |
else fputs("raw data\n", stderr); |
| 176 |
< |
#endif |
| 227 |
> |
|
| 228 |
|
data_prologue(); /* begin output */ |
| 229 |
|
if (pctcull >= 0) { |
| 230 |
< |
sprintf(cmd, "rttree_reduce -h -a -ff -r 4 -t %f -g %d", |
| 230 |
> |
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d", |
| 231 |
> |
(input_orient>0 ^ output_orient>0) ? "" : " -a", |
| 232 |
|
pctcull, samp_order); |
| 233 |
|
fflush(stdout); |
| 234 |
|
ofp = popen(cmd, "w"); |
| 239 |
|
} |
| 240 |
|
} else |
| 241 |
|
fputs("{\n", stdout); |
| 242 |
+ |
/* need to assign Dx, Dy, Dz? */ |
| 243 |
+ |
if (funame != NULL) |
| 244 |
+ |
assignD = (fundefined(funame) < 6); |
| 245 |
|
/* run through directions */ |
| 246 |
|
for (ix = 0; ix < sqres; ix++) |
| 247 |
|
for (iy = 0; iy < sqres; iy++) { |
| 248 |
|
RBFNODE *rbf = NULL; /* Klems reversal */ |
| 249 |
< |
SDsquare2disk(iovec, (ix+.5)/sqres, (iy+.5)/sqres); |
| 195 |
< |
iovec[0] = -iovec[0]; iovec[1] = -iovec[1]; |
| 249 |
> |
SDsquare2disk(iovec, 1.-(ix+.5)/sqres, 1.-(iy+.5)/sqres); |
| 250 |
|
iovec[2] = input_orient * |
| 251 |
|
sqrt(1. - iovec[0]*iovec[0] - iovec[1]*iovec[1]); |
| 252 |
|
if (funame == NULL) |
| 253 |
< |
rbf = advect_rbf(iovec); |
| 254 |
< |
for (ox = 0; ox < sqres; ox++) |
| 253 |
> |
rbf = advect_rbf(iovec, lobe_lim); |
| 254 |
> |
for (ox = 0; ox < sqres; ox++) { |
| 255 |
> |
float last_bsdf = -1; |
| 256 |
|
for (oy = 0; oy < sqres; oy++) { |
| 257 |
|
SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); |
| 258 |
|
iovec[5] = output_orient * |
| 259 |
|
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
| 260 |
|
if (funame == NULL) |
| 261 |
< |
bsdf = eval_rbfrep(rbf, iovec+3) * |
| 261 |
> |
bsdf = eval_rbfrep(rbf, iovec+3) * |
| 262 |
|
output_orient/iovec[5]; |
| 263 |
< |
else |
| 264 |
< |
bsdf = funvalue(funame, 6, iovec); |
| 263 |
> |
else { |
| 264 |
> |
double ssa[4], ssvec[6], sum; |
| 265 |
> |
int ssi; |
| 266 |
> |
if (assignD) { |
| 267 |
> |
varset("Dx", '=', -iovec[3]); |
| 268 |
> |
varset("Dy", '=', -iovec[4]); |
| 269 |
> |
varset("Dz", '=', -iovec[5]); |
| 270 |
> |
++eclock; |
| 271 |
> |
} |
| 272 |
> |
bsdf = funvalue(funame, 6, iovec); |
| 273 |
> |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
| 274 |
> |
sum = 0; /* super-sample voxel */ |
| 275 |
> |
for (ssi = nssamp; ssi--; ) { |
| 276 |
> |
SDmultiSamp(ssa, 4, (ssi+drand48())/nssamp); |
| 277 |
> |
SDsquare2disk(ssvec, 1.-(ix+ssa[0])/sqres, |
| 278 |
> |
1.-(iy+ssa[1])/sqres); |
| 279 |
> |
ssvec[2] = output_orient * |
| 280 |
> |
sqrt(1. - ssvec[0]*ssvec[0] - |
| 281 |
> |
ssvec[1]*ssvec[1]); |
| 282 |
> |
SDsquare2disk(ssvec+3, (ox+ssa[2])/sqres, |
| 283 |
> |
(oy+ssa[3])/sqres); |
| 284 |
> |
ssvec[5] = output_orient * |
| 285 |
> |
sqrt(1. - ssvec[3]*ssvec[3] - |
| 286 |
> |
ssvec[4]*ssvec[4]); |
| 287 |
> |
if (assignD) { |
| 288 |
> |
varset("Dx", '=', -iovec[3]); |
| 289 |
> |
varset("Dy", '=', -iovec[4]); |
| 290 |
> |
varset("Dz", '=', -iovec[5]); |
| 291 |
> |
++eclock; |
| 292 |
> |
} |
| 293 |
> |
sum += funvalue(funame, 6, ssvec); |
| 294 |
> |
} |
| 295 |
> |
bsdf = sum/nssamp; |
| 296 |
> |
} |
| 297 |
> |
} |
| 298 |
|
if (pctcull >= 0) |
| 299 |
|
fwrite(&bsdf, sizeof(bsdf), 1, ofp); |
| 300 |
|
else |
| 301 |
|
printf("\t%.3e\n", bsdf); |
| 302 |
+ |
last_bsdf = bsdf; |
| 303 |
|
} |
| 304 |
+ |
} |
| 305 |
|
if (rbf != NULL) |
| 306 |
|
free(rbf); |
| 307 |
|
} |
| 345 |
|
case 't': |
| 346 |
|
switch (argv[i][2]) { |
| 347 |
|
case '3': |
| 348 |
< |
single_plane_incident = 0; |
| 348 |
> |
single_plane_incident = 1; |
| 349 |
|
break; |
| 350 |
|
case '4': |
| 351 |
< |
single_plane_incident = 1; |
| 351 |
> |
single_plane_incident = 0; |
| 352 |
|
break; |
| 353 |
|
case '\0': |
| 354 |
|
pctcull = atof(argv[++i]); |
| 360 |
|
case 'g': |
| 361 |
|
samp_order = atoi(argv[++i]); |
| 362 |
|
break; |
| 363 |
+ |
case 'l': |
| 364 |
+ |
lobe_lim = atoi(argv[++i]); |
| 365 |
+ |
break; |
| 366 |
|
default: |
| 367 |
|
goto userr; |
| 368 |
|
} |
| 369 |
|
if (single_plane_incident >= 0) { /* function-based BSDF? */ |
| 370 |
|
void (*evf)(char *s) = single_plane_incident ? |
| 371 |
|
&eval_isotropic : &eval_anisotropic; |
| 372 |
< |
if (i != argc-1 || fundefined(argv[i]) != 6) |
| 372 |
> |
if (i != argc-1 || fundefined(argv[i]) < 3) { |
| 373 |
> |
fprintf(stderr, |
| 374 |
> |
"%s: need single function with 6 arguments: bsdf(ix,iy,iz,ox,oy,oz)\n", |
| 375 |
> |
progname); |
| 376 |
> |
fprintf(stderr, "\tor 3 arguments using Dx,Dy,Dz: bsdf(ix,iy,iz)\n", |
| 377 |
> |
progname); |
| 378 |
|
goto userr; |
| 379 |
+ |
} |
| 380 |
+ |
++eclock; |
| 381 |
|
xml_prologue(argc, argv); /* start XML output */ |
| 382 |
|
if (dofwd) { |
| 383 |
|
input_orient = -1; |
| 397 |
|
return(0); |
| 398 |
|
} |
| 399 |
|
if (i < argc) { /* open input files if given */ |
| 400 |
< |
xml_prologue(argc, argv); /* start XML output */ |
| 400 |
> |
int nbsdf = 0; |
| 401 |
|
for ( ; i < argc; i++) { /* interpolate each component */ |
| 402 |
|
FILE *fpin = fopen(argv[i], "rb"); |
| 403 |
|
if (fpin == NULL) { |
| 408 |
|
if (!load_bsdf_rep(fpin)) |
| 409 |
|
return(1); |
| 410 |
|
fclose(fpin); |
| 411 |
+ |
if (!nbsdf++) /* start XML on first dist. */ |
| 412 |
+ |
xml_prologue(argc, argv); |
| 413 |
|
if (single_plane_incident) |
| 414 |
|
eval_isotropic(NULL); |
| 415 |
|
else |
| 430 |
|
return(0); |
| 431 |
|
userr: |
| 432 |
|
fprintf(stderr, |
| 433 |
< |
"Usage: %s [-g Nlog2][-t pctcull] [bsdf.sir ..] > bsdf.xml\n", |
| 433 |
> |
"Usage: %s [-g Nlog2][-t pctcull][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", |
| 434 |
|
progname); |
| 435 |
|
fprintf(stderr, |
| 436 |
|
" or: %s -t{3|4} [-g Nlog2][-t pctcull][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", |