8 |
|
*/ |
9 |
|
|
10 |
|
#define _USE_MATH_DEFINES |
11 |
– |
#include <stdio.h> |
11 |
|
#include <stdlib.h> |
12 |
|
#include <math.h> |
13 |
|
#include "random.h" |
18 |
|
#include "bsdfrep.h" |
19 |
|
/* global argv[0] */ |
20 |
|
char *progname; |
21 |
+ |
/* reciprocity averaging option */ |
22 |
+ |
static const char *recip = " -a"; |
23 |
|
/* percentage to cull (<0 to turn off) */ |
24 |
|
static double pctcull = 90.; |
25 |
|
/* sampling order */ |
28 |
|
const double ssamp_thresh = 0.35; |
29 |
|
/* number of super-samples */ |
30 |
|
#ifndef NSSAMP |
31 |
< |
#define NSSAMP 100 |
31 |
> |
#define NSSAMP 64 |
32 |
|
#endif |
33 |
|
/* limit on number of RBF lobes */ |
34 |
|
static int lobe_lim = 15000; |
39 |
|
static char *wrapBSDF[MAXCARG] = {"wrapBSDF", "-U"}; |
40 |
|
static int wbsdfac = 2; |
41 |
|
|
42 |
< |
/* Add argument to wrapBSDF, allocating space if isstatic */ |
42 |
> |
/* Add argument to wrapBSDF, allocating space if !isstatic */ |
43 |
|
static void |
44 |
|
add_wbsdf(const char *arg, int isstatic) |
45 |
|
{ |
128 |
|
eval_isotropic(char *funame) |
129 |
|
{ |
130 |
|
const int sqres = 1<<samp_order; |
131 |
+ |
const double sqfact = 1./(double)sqres; |
132 |
|
FILE *ofp, *uvfp[2]; |
133 |
|
int assignD = 0; |
134 |
|
char cmd[128]; |
137 |
|
float bsdf, uv[2]; |
138 |
|
|
139 |
|
if (pctcull >= 0) { |
140 |
< |
sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", |
141 |
< |
pctcull, samp_order, create_component_file(0)); |
140 |
> |
sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", |
141 |
> |
recip, pctcull, samp_order, create_component_file(0)); |
142 |
|
ofp = popen(cmd, "w"); |
143 |
|
if (ofp == NULL) { |
144 |
|
fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n", |
151 |
|
#endif |
152 |
|
if (rbf_colorimetry == RBCtristimulus) { |
153 |
|
double uvcull = 100. - (100.-pctcull)*.25; |
154 |
< |
sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", |
155 |
< |
uvcull, samp_order, create_component_file(1)); |
154 |
> |
sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", |
155 |
> |
recip, uvcull, samp_order, create_component_file(1)); |
156 |
|
uvfp[0] = popen(cmd, "w"); |
157 |
< |
sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", |
158 |
< |
uvcull, samp_order, create_component_file(2)); |
157 |
> |
sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", |
158 |
> |
recip, uvcull, samp_order, create_component_file(2)); |
159 |
|
uvfp[1] = popen(cmd, "w"); |
160 |
|
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
161 |
|
fprintf(stderr, "%s: cannot open pipes to uv output\n", |
191 |
|
assignD = (fundefined(funame) < 6); |
192 |
|
/* run through directions */ |
193 |
|
for (ix = 0; ix < sqres/2; ix++) { |
194 |
< |
RBFNODE *rbf = NULL; |
195 |
< |
iovec[0] = 2.*(ix+.5)/sqres - 1.; |
196 |
< |
iovec[1] = .0; |
197 |
< |
iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0]); |
194 |
> |
const int zipsgn = (ix & 1)*2 - 1; |
195 |
> |
RBFNODE *rbf = NULL; |
196 |
> |
iovec[0] = 2.*sqfact*(ix+.5) - 1.; |
197 |
> |
iovec[1] = zipsgn*sqfact*.5; |
198 |
> |
iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0] |
199 |
> |
- iovec[1]*iovec[1]); |
200 |
|
if (funame == NULL) |
201 |
|
rbf = advect_rbf(iovec, lobe_lim); |
202 |
|
for (ox = 0; ox < sqres; ox++) { |
203 |
|
float last_bsdf = -1; |
204 |
|
for (oy = 0; oy < sqres; oy++) { |
205 |
< |
SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); |
205 |
> |
SDsquare2disk(iovec+3, (ox+.5)*sqfact, (oy+.5)*sqfact); |
206 |
|
iovec[5] = output_orient * |
207 |
|
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
208 |
|
if (funame == NULL) { |
209 |
|
SDValue sdv; |
210 |
|
eval_rbfcol(&sdv, rbf, iovec+3); |
211 |
|
bsdf = sdv.cieY; |
212 |
+ |
#if (NSSAMP > 0) |
213 |
+ |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
214 |
+ |
int ssi; |
215 |
+ |
double ssa[2], sum = 0, usum = 0, vsum = 0; |
216 |
+ |
/* super-sample voxel */ |
217 |
+ |
for (ssi = NSSAMP; ssi--; ) { |
218 |
+ |
SDmultiSamp(ssa, 2, (ssi+frandom()) * |
219 |
+ |
(1./NSSAMP)); |
220 |
+ |
SDsquare2disk(iovec+3, (ox+ssa[0])*sqfact, |
221 |
+ |
(oy+ssa[1])*sqfact); |
222 |
+ |
iovec[5] = output_orient * |
223 |
+ |
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
224 |
+ |
eval_rbfcol(&sdv, rbf, iovec+3); |
225 |
+ |
sum += sdv.cieY; |
226 |
+ |
if (rbf_colorimetry == RBCtristimulus) { |
227 |
+ |
sdv.cieY /= |
228 |
+ |
-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.; |
229 |
+ |
usum += 4.*sdv.spec.cx * sdv.cieY; |
230 |
+ |
vsum += 9.*sdv.spec.cy * sdv.cieY; |
231 |
+ |
} |
232 |
+ |
} |
233 |
+ |
bsdf = sum * (1./NSSAMP); |
234 |
+ |
if (rbf_colorimetry == RBCtristimulus) { |
235 |
+ |
uv[0] = usum / (sum+FTINY); |
236 |
+ |
uv[1] = vsum / (sum+FTINY); |
237 |
+ |
} |
238 |
+ |
} else |
239 |
+ |
#endif |
240 |
|
if (rbf_colorimetry == RBCtristimulus) { |
209 |
– |
c_ccvt(&sdv.spec, C_CSXY); |
241 |
|
uv[0] = uv[1] = 1. / |
242 |
|
(-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); |
243 |
|
uv[0] *= 4.*sdv.spec.cx; |
254 |
|
#if (NSSAMP > 0) |
255 |
|
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
256 |
|
int ssi; |
257 |
< |
double ssa[3], ssvec[6], sum = 0; |
257 |
> |
double ssa[4], ssvec[6], sum = 0; |
258 |
|
/* super-sample voxel */ |
259 |
|
for (ssi = NSSAMP; ssi--; ) { |
260 |
< |
SDmultiSamp(ssa, 3, (ssi+frandom()) * |
260 |
> |
SDmultiSamp(ssa, 4, (ssi+frandom()) * |
261 |
|
(1./NSSAMP)); |
262 |
< |
ssvec[0] = 2.*(ix+ssa[0])/sqres - 1.; |
263 |
< |
ssvec[1] = .0; |
264 |
< |
ssvec[2] = input_orient * |
265 |
< |
sqrt(1. - ssvec[0]*ssvec[0]); |
266 |
< |
SDsquare2disk(ssvec+3, (ox+ssa[1])/sqres, |
267 |
< |
(oy+ssa[2])/sqres); |
262 |
> |
ssvec[0] = 2.*sqfact*(ix+ssa[0]) - 1.; |
263 |
> |
ssvec[1] = zipsgn*sqfact*ssa[1]; |
264 |
> |
ssvec[2] = 1. - ssvec[0]*ssvec[0] |
265 |
> |
- ssvec[1]*ssvec[1]; |
266 |
> |
if (ssvec[2] < .0) { |
267 |
> |
ssvec[1] = 0; |
268 |
> |
ssvec[2] = 1. - ssvec[0]*ssvec[0]; |
269 |
> |
} |
270 |
> |
ssvec[2] = input_orient * sqrt(ssvec[2]); |
271 |
> |
SDsquare2disk(ssvec+3, (ox+ssa[2])*sqfact, |
272 |
> |
(oy+ssa[3])*sqfact); |
273 |
|
ssvec[5] = output_orient * |
274 |
|
sqrt(1. - ssvec[3]*ssvec[3] - |
275 |
|
ssvec[4]*ssvec[4]); |
281 |
|
} |
282 |
|
sum += funvalue(funame, 6, ssvec); |
283 |
|
} |
284 |
< |
bsdf = sum/NSSAMP; |
284 |
> |
bsdf = sum * (1./NSSAMP); |
285 |
|
} |
286 |
|
#endif |
287 |
|
} |
288 |
|
if (pctcull >= 0) |
289 |
< |
fwrite(&bsdf, sizeof(bsdf), 1, ofp); |
289 |
> |
putbinary(&bsdf, sizeof(bsdf), 1, ofp); |
290 |
|
else |
291 |
|
fprintf(ofp, "\t%.3e\n", bsdf); |
292 |
|
|
293 |
|
if (rbf_colorimetry == RBCtristimulus) { |
294 |
|
if (pctcull >= 0) { |
295 |
< |
fwrite(&uv[0], sizeof(*uv), 1, uvfp[0]); |
296 |
< |
fwrite(&uv[1], sizeof(*uv), 1, uvfp[1]); |
295 |
> |
putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]); |
296 |
> |
putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]); |
297 |
|
} else { |
298 |
|
fprintf(uvfp[0], "\t%.3e\n", uv[0]); |
299 |
|
fprintf(uvfp[1], "\t%.3e\n", uv[1]); |
304 |
|
} |
305 |
|
if (rbf != NULL) |
306 |
|
free(rbf); |
307 |
< |
prog_show((ix+1.)*(2./sqres)); |
307 |
> |
prog_show((ix+1.)*(2.*sqfact)); |
308 |
|
} |
309 |
|
prog_done(); |
310 |
|
if (pctcull >= 0) { /* finish output */ |
349 |
|
eval_anisotropic(char *funame) |
350 |
|
{ |
351 |
|
const int sqres = 1<<samp_order; |
352 |
+ |
const double sqfact = 1./(double)sqres; |
353 |
|
FILE *ofp, *uvfp[2]; |
354 |
|
int assignD = 0; |
355 |
|
char cmd[128]; |
359 |
|
|
360 |
|
if (pctcull >= 0) { |
361 |
|
const char *avgopt = (input_orient>0 ^ output_orient>0) |
362 |
< |
? "" : " -a"; |
362 |
> |
? "" : recip; |
363 |
|
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", |
364 |
|
avgopt, pctcull, samp_order, |
365 |
|
create_component_file(0)); |
419 |
|
for (ix = 0; ix < sqres; ix++) |
420 |
|
for (iy = 0; iy < sqres; iy++) { |
421 |
|
RBFNODE *rbf = NULL; /* Klems reversal */ |
422 |
< |
SDsquare2disk(iovec, 1.-(ix+.5)/sqres, 1.-(iy+.5)/sqres); |
422 |
> |
SDsquare2disk(iovec, 1.-(ix+.5)*sqfact, 1.-(iy+.5)*sqfact); |
423 |
|
iovec[2] = input_orient * |
424 |
|
sqrt(1. - iovec[0]*iovec[0] - iovec[1]*iovec[1]); |
425 |
|
if (funame == NULL) |
427 |
|
for (ox = 0; ox < sqres; ox++) { |
428 |
|
float last_bsdf = -1; |
429 |
|
for (oy = 0; oy < sqres; oy++) { |
430 |
< |
SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); |
430 |
> |
SDsquare2disk(iovec+3, (ox+.5)*sqfact, (oy+.5)*sqfact); |
431 |
|
iovec[5] = output_orient * |
432 |
|
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
433 |
|
if (funame == NULL) { |
434 |
|
SDValue sdv; |
435 |
|
eval_rbfcol(&sdv, rbf, iovec+3); |
436 |
|
bsdf = sdv.cieY; |
437 |
+ |
#if (NSSAMP > 0) |
438 |
+ |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
439 |
+ |
int ssi; |
440 |
+ |
double ssa[2], sum = 0, usum = 0, vsum = 0; |
441 |
+ |
/* super-sample voxel */ |
442 |
+ |
for (ssi = NSSAMP; ssi--; ) { |
443 |
+ |
SDmultiSamp(ssa, 2, (ssi+frandom()) * |
444 |
+ |
(1./NSSAMP)); |
445 |
+ |
SDsquare2disk(iovec+3, (ox+ssa[0])*sqfact, |
446 |
+ |
(oy+ssa[1])*sqfact); |
447 |
+ |
iovec[5] = output_orient * |
448 |
+ |
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
449 |
+ |
eval_rbfcol(&sdv, rbf, iovec+3); |
450 |
+ |
sum += sdv.cieY; |
451 |
+ |
if (rbf_colorimetry == RBCtristimulus) { |
452 |
+ |
sdv.cieY /= |
453 |
+ |
-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.; |
454 |
+ |
usum += 4.*sdv.spec.cx * sdv.cieY; |
455 |
+ |
vsum += 9.*sdv.spec.cy * sdv.cieY; |
456 |
+ |
} |
457 |
+ |
} |
458 |
+ |
bsdf = sum * (1./NSSAMP); |
459 |
+ |
if (rbf_colorimetry == RBCtristimulus) { |
460 |
+ |
uv[0] = usum / (sum+FTINY); |
461 |
+ |
uv[1] = vsum / (sum+FTINY); |
462 |
+ |
} |
463 |
+ |
} else |
464 |
+ |
#endif |
465 |
|
if (rbf_colorimetry == RBCtristimulus) { |
401 |
– |
c_ccvt(&sdv.spec, C_CSXY); |
466 |
|
uv[0] = uv[1] = 1. / |
467 |
|
(-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); |
468 |
|
uv[0] *= 4.*sdv.spec.cx; |
484 |
|
for (ssi = NSSAMP; ssi--; ) { |
485 |
|
SDmultiSamp(ssa, 4, (ssi+frandom()) * |
486 |
|
(1./NSSAMP)); |
487 |
< |
SDsquare2disk(ssvec, 1.-(ix+ssa[0])/sqres, |
488 |
< |
1.-(iy+ssa[1])/sqres); |
487 |
> |
SDsquare2disk(ssvec, 1.-(ix+ssa[0])*sqfact, |
488 |
> |
1.-(iy+ssa[1])*sqfact); |
489 |
|
ssvec[2] = input_orient * |
490 |
|
sqrt(1. - ssvec[0]*ssvec[0] - |
491 |
|
ssvec[1]*ssvec[1]); |
492 |
< |
SDsquare2disk(ssvec+3, (ox+ssa[2])/sqres, |
493 |
< |
(oy+ssa[3])/sqres); |
492 |
> |
SDsquare2disk(ssvec+3, (ox+ssa[2])*sqfact, |
493 |
> |
(oy+ssa[3])*sqfact); |
494 |
|
ssvec[5] = output_orient * |
495 |
|
sqrt(1. - ssvec[3]*ssvec[3] - |
496 |
|
ssvec[4]*ssvec[4]); |
502 |
|
} |
503 |
|
sum += funvalue(funame, 6, ssvec); |
504 |
|
} |
505 |
< |
bsdf = sum/NSSAMP; |
505 |
> |
bsdf = sum * (1./NSSAMP); |
506 |
|
} |
507 |
|
#endif |
508 |
|
} |
509 |
|
if (pctcull >= 0) |
510 |
< |
fwrite(&bsdf, sizeof(bsdf), 1, ofp); |
510 |
> |
putbinary(&bsdf, sizeof(bsdf), 1, ofp); |
511 |
|
else |
512 |
|
fprintf(ofp, "\t%.3e\n", bsdf); |
513 |
|
|
514 |
|
if (rbf_colorimetry == RBCtristimulus) { |
515 |
|
if (pctcull >= 0) { |
516 |
< |
fwrite(&uv[0], sizeof(*uv), 1, uvfp[0]); |
517 |
< |
fwrite(&uv[1], sizeof(*uv), 1, uvfp[1]); |
516 |
> |
putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]); |
517 |
> |
putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]); |
518 |
|
} else { |
519 |
|
fprintf(uvfp[0], "\t%.3e\n", uv[0]); |
520 |
|
fprintf(uvfp[1], "\t%.3e\n", uv[1]); |
629 |
|
esupport &= ~(E_INCHAN|E_OUTCHAN); |
630 |
|
scompile("PI:3.14159265358979323846", NULL, 0); |
631 |
|
biggerlib(); |
632 |
< |
for (i = 1; i < argc-1 && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) |
632 |
> |
for (i = 1; i < argc && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) |
633 |
|
switch (argv[i][1]) { /* get options */ |
634 |
|
case 'e': |
635 |
|
scompile(argv[++i], NULL, 0); |
639 |
|
if (strchr(argv[++i], '=') != NULL) { |
640 |
|
add_wbsdf("-f", 1); |
641 |
|
add_wbsdf(argv[i], 1); |
642 |
< |
} else |
643 |
< |
fcompile(argv[i]); |
642 |
> |
} else { |
643 |
> |
char *fpath = getpath(argv[i], |
644 |
> |
getrlibpath(), 0); |
645 |
> |
if (fpath == NULL) { |
646 |
> |
fprintf(stderr, |
647 |
> |
"%s: cannot find file '%s'\n", |
648 |
> |
argv[0], argv[i]); |
649 |
> |
return(1); |
650 |
> |
} |
651 |
> |
fcompile(fpath); |
652 |
> |
if (single_plane_incident < 0) |
653 |
> |
single_plane_incident = 0; |
654 |
> |
} |
655 |
|
} else |
656 |
|
dofwd = (argv[i][0] == '+'); |
657 |
|
break; |
658 |
+ |
case 'a': |
659 |
+ |
recip = (argv[i][0] == '+') ? " -a" : ""; |
660 |
+ |
break; |
661 |
|
case 'b': |
662 |
|
dobwd = (argv[i][0] == '+'); |
663 |
|
break; |
773 |
|
return(wrap_up()); |
774 |
|
userr: |
775 |
|
fprintf(stderr, |
776 |
< |
"Usage: %s [-g Nlog2][-t pctcull][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", |
776 |
> |
"Usage: %s [{+|-}a][-g Nlog2][-t pctcull][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", |
777 |
|
progname); |
778 |
|
fprintf(stderr, |
779 |
< |
" or: %s -t{3|4} [-g Nlog2][-t pctcull][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", |
779 |
> |
" or: %s -t{3|4} [{+|-}a][-g Nlog2][-t pctcull][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", |
780 |
|
progname); |
781 |
|
return(1); |
782 |
|
} |