1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: bsdf2ttree.c,v 2.39 2016/10/13 16:59:29 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* Load measured BSDF interpolant and write out as XML file with tensor tree. |
6 |
* |
7 |
* G. Ward |
8 |
*/ |
9 |
|
10 |
#define _USE_MATH_DEFINES |
11 |
#include <stdio.h> |
12 |
#include <stdlib.h> |
13 |
#include <math.h> |
14 |
#include "random.h" |
15 |
#include "platform.h" |
16 |
#include "paths.h" |
17 |
#include "rtio.h" |
18 |
#include "calcomp.h" |
19 |
#include "bsdfrep.h" |
20 |
/* global argv[0] */ |
21 |
char *progname; |
22 |
/* percentage to cull (<0 to turn off) */ |
23 |
static double pctcull = 90.; |
24 |
/* sampling order */ |
25 |
static int samp_order = 6; |
26 |
/* super-sampling threshold */ |
27 |
const double ssamp_thresh = 0.35; |
28 |
/* number of super-samples */ |
29 |
#ifndef NSSAMP |
30 |
#define NSSAMP 64 |
31 |
#endif |
32 |
/* limit on number of RBF lobes */ |
33 |
static int lobe_lim = 15000; |
34 |
/* progress bar length */ |
35 |
static int do_prog = 79; |
36 |
|
37 |
#define MAXCARG 512 /* wrapBSDF command */ |
38 |
static char *wrapBSDF[MAXCARG] = {"wrapBSDF", "-U"}; |
39 |
static int wbsdfac = 2; |
40 |
|
41 |
/* Add argument to wrapBSDF, allocating space if !isstatic */ |
42 |
static void |
43 |
add_wbsdf(const char *arg, int isstatic) |
44 |
{ |
45 |
if (arg == NULL) |
46 |
return; |
47 |
if (wbsdfac >= MAXCARG-1) { |
48 |
fputs(progname, stderr); |
49 |
fputs(": too many command arguments to wrapBSDF\n", stderr); |
50 |
exit(1); |
51 |
} |
52 |
if (!*arg) |
53 |
arg = ""; |
54 |
else if (!isstatic) |
55 |
arg = savqstr((char *)arg); |
56 |
|
57 |
wrapBSDF[wbsdfac++] = (char *)arg; |
58 |
} |
59 |
|
60 |
/* Create Yuv component file and add appropriate arguments */ |
61 |
static char * |
62 |
create_component_file(int c) |
63 |
{ |
64 |
static const char sname[3][6] = {"CIE-Y", "CIE-u", "CIE-v"}; |
65 |
static const char cname[4][4] = {"-rf", "-tf", "-tb", "-rb"}; |
66 |
char *tfname = mktemp(savqstr(TEMPLATE)); |
67 |
|
68 |
add_wbsdf("-s", 1); add_wbsdf(sname[c], 1); |
69 |
add_wbsdf(cname[(input_orient>0)<<1 | (output_orient>0)], 1); |
70 |
add_wbsdf(tfname, 1); |
71 |
return(tfname); |
72 |
} |
73 |
|
74 |
/* Start new progress bar */ |
75 |
#define prog_start(s) if (do_prog) fprintf(stderr, "%s: %s...\n", progname, s); else |
76 |
|
77 |
/* Draw progress bar of the appropriate length */ |
78 |
static void |
79 |
prog_show(double frac) |
80 |
{ |
81 |
static unsigned call_cnt = 0; |
82 |
static char lastc[] = "-\\|/"; |
83 |
char pbar[256]; |
84 |
int nchars; |
85 |
|
86 |
if (do_prog <= 1) return; |
87 |
if (do_prog > sizeof(pbar)-2) |
88 |
do_prog = sizeof(pbar)-2; |
89 |
if (frac < 0) frac = 0; |
90 |
else if (frac >= 1) frac = .9999; |
91 |
nchars = do_prog*frac; |
92 |
pbar[0] = '\r'; |
93 |
memset(pbar+1, '*', nchars); |
94 |
pbar[nchars+1] = lastc[call_cnt++ & 3]; |
95 |
memset(pbar+2+nchars, '-', do_prog-nchars-1); |
96 |
pbar[do_prog+1] = '\0'; |
97 |
fputs(pbar, stderr); |
98 |
} |
99 |
|
100 |
/* Finish progress bar */ |
101 |
static void |
102 |
prog_done(void) |
103 |
{ |
104 |
int n = do_prog; |
105 |
|
106 |
if (n <= 1) return; |
107 |
fputc('\r', stderr); |
108 |
while (n--) |
109 |
fputc(' ', stderr); |
110 |
fputc('\r', stderr); |
111 |
} |
112 |
|
113 |
/* Compute absolute relative difference */ |
114 |
static double |
115 |
abs_diff(double v1, double v0) |
116 |
{ |
117 |
if ((v0 < 0) | (v1 < 0)) |
118 |
return(.0); |
119 |
v1 = (v1-v0)*2./(v0+v1+.0001); |
120 |
if (v1 < 0) |
121 |
return(-v1); |
122 |
return(v1); |
123 |
} |
124 |
|
125 |
/* Interpolate and output isotropic BSDF data */ |
126 |
static void |
127 |
eval_isotropic(char *funame) |
128 |
{ |
129 |
const int sqres = 1<<samp_order; |
130 |
FILE *ofp, *uvfp[2]; |
131 |
int assignD = 0; |
132 |
char cmd[128]; |
133 |
int ix, ox, oy; |
134 |
double iovec[6]; |
135 |
float bsdf, uv[2]; |
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|
137 |
if (pctcull >= 0) { |
138 |
sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", |
139 |
pctcull, samp_order, create_component_file(0)); |
140 |
ofp = popen(cmd, "w"); |
141 |
if (ofp == NULL) { |
142 |
fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n", |
143 |
progname); |
144 |
exit(1); |
145 |
} |
146 |
SET_FILE_BINARY(ofp); |
147 |
#ifdef getc_unlocked /* avoid lock/unlock overhead */ |
148 |
flockfile(ofp); |
149 |
#endif |
150 |
if (rbf_colorimetry == RBCtristimulus) { |
151 |
double uvcull = 100. - (100.-pctcull)*.25; |
152 |
sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", |
153 |
uvcull, samp_order, create_component_file(1)); |
154 |
uvfp[0] = popen(cmd, "w"); |
155 |
sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", |
156 |
uvcull, samp_order, create_component_file(2)); |
157 |
uvfp[1] = popen(cmd, "w"); |
158 |
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
159 |
fprintf(stderr, "%s: cannot open pipes to uv output\n", |
160 |
progname); |
161 |
exit(1); |
162 |
} |
163 |
SET_FILE_BINARY(uvfp[0]); SET_FILE_BINARY(uvfp[1]); |
164 |
#ifdef getc_unlocked |
165 |
flockfile(uvfp[0]); flockfile(uvfp[1]); |
166 |
#endif |
167 |
} |
168 |
} else { |
169 |
ofp = fopen(create_component_file(0), "w"); |
170 |
if (ofp == NULL) { |
171 |
fprintf(stderr, "%s: cannot create Y output file\n", |
172 |
progname); |
173 |
exit(1); |
174 |
} |
175 |
fputs("{\n", ofp); |
176 |
if (rbf_colorimetry == RBCtristimulus) { |
177 |
uvfp[0] = fopen(create_component_file(1), "w"); |
178 |
uvfp[1] = fopen(create_component_file(2), "w"); |
179 |
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
180 |
fprintf(stderr, "%s: cannot create uv output file(s)\n", |
181 |
progname); |
182 |
exit(1); |
183 |
} |
184 |
fputs("{\n", uvfp[0]); |
185 |
fputs("{\n", uvfp[1]); |
186 |
} |
187 |
} |
188 |
if (funame != NULL) /* need to assign Dx, Dy, Dz? */ |
189 |
assignD = (fundefined(funame) < 6); |
190 |
/* run through directions */ |
191 |
for (ix = 0; ix < sqres/2; ix++) { |
192 |
RBFNODE *rbf = NULL; |
193 |
iovec[0] = 2.*(ix+.5)/sqres - 1.; |
194 |
iovec[1] = .0; |
195 |
iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0]); |
196 |
if (funame == NULL) |
197 |
rbf = advect_rbf(iovec, lobe_lim); |
198 |
for (ox = 0; ox < sqres; ox++) { |
199 |
float last_bsdf = -1; |
200 |
for (oy = 0; oy < sqres; oy++) { |
201 |
SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); |
202 |
iovec[5] = output_orient * |
203 |
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
204 |
if (funame == NULL) { |
205 |
SDValue sdv; |
206 |
eval_rbfcol(&sdv, rbf, iovec+3); |
207 |
bsdf = sdv.cieY; |
208 |
if (rbf_colorimetry == RBCtristimulus) { |
209 |
uv[0] = uv[1] = 1. / |
210 |
(-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); |
211 |
uv[0] *= 4.*sdv.spec.cx; |
212 |
uv[1] *= 9.*sdv.spec.cy; |
213 |
} |
214 |
} else { |
215 |
if (assignD) { |
216 |
varset("Dx", '=', -iovec[3]); |
217 |
varset("Dy", '=', -iovec[4]); |
218 |
varset("Dz", '=', -iovec[5]); |
219 |
++eclock; |
220 |
} |
221 |
bsdf = funvalue(funame, 6, iovec); |
222 |
#if (NSSAMP > 0) |
223 |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
224 |
int ssi; |
225 |
double ssa[3], ssvec[6], sum = 0; |
226 |
/* super-sample voxel */ |
227 |
for (ssi = NSSAMP; ssi--; ) { |
228 |
SDmultiSamp(ssa, 3, (ssi+frandom()) * |
229 |
(1./NSSAMP)); |
230 |
ssvec[0] = 2.*(ix+ssa[0])/sqres - 1.; |
231 |
ssvec[1] = .0; |
232 |
ssvec[2] = input_orient * |
233 |
sqrt(1. - ssvec[0]*ssvec[0]); |
234 |
SDsquare2disk(ssvec+3, (ox+ssa[1])/sqres, |
235 |
(oy+ssa[2])/sqres); |
236 |
ssvec[5] = output_orient * |
237 |
sqrt(1. - ssvec[3]*ssvec[3] - |
238 |
ssvec[4]*ssvec[4]); |
239 |
if (assignD) { |
240 |
varset("Dx", '=', -ssvec[3]); |
241 |
varset("Dy", '=', -ssvec[4]); |
242 |
varset("Dz", '=', -ssvec[5]); |
243 |
++eclock; |
244 |
} |
245 |
sum += funvalue(funame, 6, ssvec); |
246 |
} |
247 |
bsdf = sum/NSSAMP; |
248 |
} |
249 |
#endif |
250 |
} |
251 |
if (pctcull >= 0) |
252 |
putbinary(&bsdf, sizeof(bsdf), 1, ofp); |
253 |
else |
254 |
fprintf(ofp, "\t%.3e\n", bsdf); |
255 |
|
256 |
if (rbf_colorimetry == RBCtristimulus) { |
257 |
if (pctcull >= 0) { |
258 |
putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]); |
259 |
putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]); |
260 |
} else { |
261 |
fprintf(uvfp[0], "\t%.3e\n", uv[0]); |
262 |
fprintf(uvfp[1], "\t%.3e\n", uv[1]); |
263 |
} |
264 |
} |
265 |
last_bsdf = bsdf; |
266 |
} |
267 |
} |
268 |
if (rbf != NULL) |
269 |
free(rbf); |
270 |
prog_show((ix+1.)*(2./sqres)); |
271 |
} |
272 |
prog_done(); |
273 |
if (pctcull >= 0) { /* finish output */ |
274 |
if (pclose(ofp)) { |
275 |
fprintf(stderr, "%s: error running rttree_reduce on Y\n", |
276 |
progname); |
277 |
exit(1); |
278 |
} |
279 |
if (rbf_colorimetry == RBCtristimulus && |
280 |
(pclose(uvfp[0]) || pclose(uvfp[1]))) { |
281 |
fprintf(stderr, "%s: error running rttree_reduce on uv\n", |
282 |
progname); |
283 |
exit(1); |
284 |
} |
285 |
} else { |
286 |
for (ix = sqres*sqres*sqres/2; ix--; ) |
287 |
fputs("\t0\n", ofp); |
288 |
fputs("}\n", ofp); |
289 |
if (fclose(ofp)) { |
290 |
fprintf(stderr, "%s: error writing Y file\n", |
291 |
progname); |
292 |
exit(1); |
293 |
} |
294 |
if (rbf_colorimetry == RBCtristimulus) { |
295 |
for (ix = sqres*sqres*sqres/2; ix--; ) { |
296 |
fputs("\t0\n", uvfp[0]); |
297 |
fputs("\t0\n", uvfp[1]); |
298 |
} |
299 |
fputs("}\n", uvfp[0]); |
300 |
fputs("}\n", uvfp[1]); |
301 |
if (fclose(uvfp[0]) || fclose(uvfp[1])) { |
302 |
fprintf(stderr, "%s: error writing uv file(s)\n", |
303 |
progname); |
304 |
exit(1); |
305 |
} |
306 |
} |
307 |
} |
308 |
} |
309 |
|
310 |
/* Interpolate and output anisotropic BSDF data */ |
311 |
static void |
312 |
eval_anisotropic(char *funame) |
313 |
{ |
314 |
const int sqres = 1<<samp_order; |
315 |
FILE *ofp, *uvfp[2]; |
316 |
int assignD = 0; |
317 |
char cmd[128]; |
318 |
int ix, iy, ox, oy; |
319 |
double iovec[6]; |
320 |
float bsdf, uv[2]; |
321 |
|
322 |
if (pctcull >= 0) { |
323 |
const char *avgopt = (input_orient>0 ^ output_orient>0) |
324 |
? "" : " -a"; |
325 |
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", |
326 |
avgopt, pctcull, samp_order, |
327 |
create_component_file(0)); |
328 |
ofp = popen(cmd, "w"); |
329 |
if (ofp == NULL) { |
330 |
fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n", |
331 |
progname); |
332 |
exit(1); |
333 |
} |
334 |
SET_FILE_BINARY(ofp); |
335 |
#ifdef getc_unlocked /* avoid lock/unlock overhead */ |
336 |
flockfile(ofp); |
337 |
#endif |
338 |
if (rbf_colorimetry == RBCtristimulus) { |
339 |
double uvcull = 100. - (100.-pctcull)*.25; |
340 |
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", |
341 |
avgopt, uvcull, samp_order, |
342 |
create_component_file(1)); |
343 |
uvfp[0] = popen(cmd, "w"); |
344 |
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", |
345 |
avgopt, uvcull, samp_order, |
346 |
create_component_file(2)); |
347 |
uvfp[1] = popen(cmd, "w"); |
348 |
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
349 |
fprintf(stderr, "%s: cannot open pipes to uv output\n", |
350 |
progname); |
351 |
exit(1); |
352 |
} |
353 |
SET_FILE_BINARY(uvfp[0]); SET_FILE_BINARY(uvfp[1]); |
354 |
#ifdef getc_unlocked |
355 |
flockfile(uvfp[0]); flockfile(uvfp[1]); |
356 |
#endif |
357 |
} |
358 |
} else { |
359 |
ofp = fopen(create_component_file(0), "w"); |
360 |
if (ofp == NULL) { |
361 |
fprintf(stderr, "%s: cannot create Y output file\n", |
362 |
progname); |
363 |
exit(1); |
364 |
} |
365 |
fputs("{\n", ofp); |
366 |
if (rbf_colorimetry == RBCtristimulus) { |
367 |
uvfp[0] = fopen(create_component_file(1), "w"); |
368 |
uvfp[1] = fopen(create_component_file(2), "w"); |
369 |
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
370 |
fprintf(stderr, "%s: cannot create uv output file(s)\n", |
371 |
progname); |
372 |
exit(1); |
373 |
} |
374 |
fputs("{\n", uvfp[0]); |
375 |
fputs("{\n", uvfp[1]); |
376 |
} |
377 |
} |
378 |
if (funame != NULL) /* need to assign Dx, Dy, Dz? */ |
379 |
assignD = (fundefined(funame) < 6); |
380 |
/* run through directions */ |
381 |
for (ix = 0; ix < sqres; ix++) |
382 |
for (iy = 0; iy < sqres; iy++) { |
383 |
RBFNODE *rbf = NULL; /* Klems reversal */ |
384 |
SDsquare2disk(iovec, 1.-(ix+.5)/sqres, 1.-(iy+.5)/sqres); |
385 |
iovec[2] = input_orient * |
386 |
sqrt(1. - iovec[0]*iovec[0] - iovec[1]*iovec[1]); |
387 |
if (funame == NULL) |
388 |
rbf = advect_rbf(iovec, lobe_lim); |
389 |
for (ox = 0; ox < sqres; ox++) { |
390 |
float last_bsdf = -1; |
391 |
for (oy = 0; oy < sqres; oy++) { |
392 |
SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); |
393 |
iovec[5] = output_orient * |
394 |
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
395 |
if (funame == NULL) { |
396 |
SDValue sdv; |
397 |
eval_rbfcol(&sdv, rbf, iovec+3); |
398 |
bsdf = sdv.cieY; |
399 |
if (rbf_colorimetry == RBCtristimulus) { |
400 |
uv[0] = uv[1] = 1. / |
401 |
(-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); |
402 |
uv[0] *= 4.*sdv.spec.cx; |
403 |
uv[1] *= 9.*sdv.spec.cy; |
404 |
} |
405 |
} else { |
406 |
if (assignD) { |
407 |
varset("Dx", '=', -iovec[3]); |
408 |
varset("Dy", '=', -iovec[4]); |
409 |
varset("Dz", '=', -iovec[5]); |
410 |
++eclock; |
411 |
} |
412 |
bsdf = funvalue(funame, 6, iovec); |
413 |
#if (NSSAMP > 0) |
414 |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
415 |
int ssi; |
416 |
double ssa[4], ssvec[6], sum = 0; |
417 |
/* super-sample voxel */ |
418 |
for (ssi = NSSAMP; ssi--; ) { |
419 |
SDmultiSamp(ssa, 4, (ssi+frandom()) * |
420 |
(1./NSSAMP)); |
421 |
SDsquare2disk(ssvec, 1.-(ix+ssa[0])/sqres, |
422 |
1.-(iy+ssa[1])/sqres); |
423 |
ssvec[2] = input_orient * |
424 |
sqrt(1. - ssvec[0]*ssvec[0] - |
425 |
ssvec[1]*ssvec[1]); |
426 |
SDsquare2disk(ssvec+3, (ox+ssa[2])/sqres, |
427 |
(oy+ssa[3])/sqres); |
428 |
ssvec[5] = output_orient * |
429 |
sqrt(1. - ssvec[3]*ssvec[3] - |
430 |
ssvec[4]*ssvec[4]); |
431 |
if (assignD) { |
432 |
varset("Dx", '=', -ssvec[3]); |
433 |
varset("Dy", '=', -ssvec[4]); |
434 |
varset("Dz", '=', -ssvec[5]); |
435 |
++eclock; |
436 |
} |
437 |
sum += funvalue(funame, 6, ssvec); |
438 |
} |
439 |
bsdf = sum/NSSAMP; |
440 |
} |
441 |
#endif |
442 |
} |
443 |
if (pctcull >= 0) |
444 |
putbinary(&bsdf, sizeof(bsdf), 1, ofp); |
445 |
else |
446 |
fprintf(ofp, "\t%.3e\n", bsdf); |
447 |
|
448 |
if (rbf_colorimetry == RBCtristimulus) { |
449 |
if (pctcull >= 0) { |
450 |
putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]); |
451 |
putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]); |
452 |
} else { |
453 |
fprintf(uvfp[0], "\t%.3e\n", uv[0]); |
454 |
fprintf(uvfp[1], "\t%.3e\n", uv[1]); |
455 |
} |
456 |
} |
457 |
last_bsdf = bsdf; |
458 |
} |
459 |
} |
460 |
if (rbf != NULL) |
461 |
free(rbf); |
462 |
prog_show((ix*sqres+iy+1.)/(sqres*sqres)); |
463 |
} |
464 |
prog_done(); |
465 |
if (pctcull >= 0) { /* finish output */ |
466 |
if (pclose(ofp)) { |
467 |
fprintf(stderr, "%s: error running rttree_reduce on Y\n", |
468 |
progname); |
469 |
exit(1); |
470 |
} |
471 |
if (rbf_colorimetry == RBCtristimulus && |
472 |
(pclose(uvfp[0]) || pclose(uvfp[1]))) { |
473 |
fprintf(stderr, "%s: error running rttree_reduce on uv\n", |
474 |
progname); |
475 |
exit(1); |
476 |
} |
477 |
} else { |
478 |
fputs("}\n", ofp); |
479 |
if (fclose(ofp)) { |
480 |
fprintf(stderr, "%s: error writing Y file\n", |
481 |
progname); |
482 |
exit(1); |
483 |
} |
484 |
if (rbf_colorimetry == RBCtristimulus) { |
485 |
fputs("}\n", uvfp[0]); |
486 |
fputs("}\n", uvfp[1]); |
487 |
if (fclose(uvfp[0]) || fclose(uvfp[1])) { |
488 |
fprintf(stderr, "%s: error writing uv file(s)\n", |
489 |
progname); |
490 |
exit(1); |
491 |
} |
492 |
} |
493 |
} |
494 |
} |
495 |
|
496 |
#if defined(_WIN32) || defined(_WIN64) |
497 |
/* Execute wrapBSDF command (may never return) */ |
498 |
static int |
499 |
wrap_up(void) |
500 |
{ |
501 |
char cmd[8192]; |
502 |
|
503 |
if (bsdf_manuf[0]) { |
504 |
add_wbsdf("-f", 1); |
505 |
strcpy(cmd, "m="); |
506 |
strcpy(cmd+2, bsdf_manuf); |
507 |
add_wbsdf(cmd, 0); |
508 |
} |
509 |
if (bsdf_name[0]) { |
510 |
add_wbsdf("-f", 1); |
511 |
strcpy(cmd, "n="); |
512 |
strcpy(cmd+2, bsdf_name); |
513 |
add_wbsdf(cmd, 0); |
514 |
} |
515 |
if (!convert_commandline(cmd, sizeof(cmd), wrapBSDF)) { |
516 |
fputs(progname, stderr); |
517 |
fputs(": command line too long in wrap_up()\n", stderr); |
518 |
return(1); |
519 |
} |
520 |
return(system(cmd)); |
521 |
} |
522 |
#else |
523 |
/* Execute wrapBSDF command (may never return) */ |
524 |
static int |
525 |
wrap_up(void) |
526 |
{ |
527 |
char buf[256]; |
528 |
char *compath = getpath((char *)wrapBSDF[0], getenv("PATH"), X_OK); |
529 |
|
530 |
if (compath == NULL) { |
531 |
fprintf(stderr, "%s: cannot locate %s\n", progname, wrapBSDF[0]); |
532 |
return(1); |
533 |
} |
534 |
if (bsdf_manuf[0]) { |
535 |
add_wbsdf("-f", 1); |
536 |
strcpy(buf, "m="); |
537 |
strcpy(buf+2, bsdf_manuf); |
538 |
add_wbsdf(buf, 0); |
539 |
} |
540 |
if (bsdf_name[0]) { |
541 |
add_wbsdf("-f", 1); |
542 |
strcpy(buf, "n="); |
543 |
strcpy(buf+2, bsdf_name); |
544 |
add_wbsdf(buf, 0); |
545 |
} |
546 |
execv(compath, wrapBSDF); /* successful call never returns */ |
547 |
perror(compath); |
548 |
return(1); |
549 |
} |
550 |
#endif |
551 |
|
552 |
/* Read in BSDF and interpolate as tensor tree representation */ |
553 |
int |
554 |
main(int argc, char *argv[]) |
555 |
{ |
556 |
static char tfmt[2][4] = {"t4", "t3"}; |
557 |
int dofwd = 0, dobwd = 1; |
558 |
char buf[2048]; |
559 |
int i, na; |
560 |
|
561 |
progname = argv[0]; |
562 |
esupport |= E_VARIABLE|E_FUNCTION|E_RCONST; |
563 |
esupport &= ~(E_INCHAN|E_OUTCHAN); |
564 |
scompile("PI:3.14159265358979323846", NULL, 0); |
565 |
biggerlib(); |
566 |
for (i = 1; i < argc-1 && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) |
567 |
switch (argv[i][1]) { /* get options */ |
568 |
case 'e': |
569 |
scompile(argv[++i], NULL, 0); |
570 |
break; |
571 |
case 'f': |
572 |
if (!argv[i][2]) { |
573 |
if (strchr(argv[++i], '=') != NULL) { |
574 |
add_wbsdf("-f", 1); |
575 |
add_wbsdf(argv[i], 1); |
576 |
} else |
577 |
fcompile(argv[i]); |
578 |
} else |
579 |
dofwd = (argv[i][0] == '+'); |
580 |
break; |
581 |
case 'b': |
582 |
dobwd = (argv[i][0] == '+'); |
583 |
break; |
584 |
case 't': |
585 |
switch (argv[i][2]) { |
586 |
case '3': |
587 |
single_plane_incident = 1; |
588 |
break; |
589 |
case '4': |
590 |
single_plane_incident = 0; |
591 |
break; |
592 |
case '\0': |
593 |
pctcull = atof(argv[++i]); |
594 |
break; |
595 |
default: |
596 |
goto userr; |
597 |
} |
598 |
break; |
599 |
case 'g': |
600 |
samp_order = atoi(argv[++i]); |
601 |
break; |
602 |
case 'l': |
603 |
lobe_lim = atoi(argv[++i]); |
604 |
break; |
605 |
case 'p': |
606 |
do_prog = atoi(argv[i]+2); |
607 |
break; |
608 |
case 'W': |
609 |
add_wbsdf(argv[i], 1); |
610 |
break; |
611 |
case 'u': |
612 |
case 'C': |
613 |
add_wbsdf(argv[i], 1); |
614 |
add_wbsdf(argv[++i], 1); |
615 |
break; |
616 |
default: |
617 |
goto userr; |
618 |
} |
619 |
strcpy(buf, "File produced by: "); |
620 |
if (convert_commandline(buf+18, sizeof(buf)-18, argv) != NULL) { |
621 |
add_wbsdf("-C", 1); add_wbsdf(buf, 0); |
622 |
} |
623 |
if (single_plane_incident >= 0) { /* function-based BSDF? */ |
624 |
void (*evf)(char *s) = single_plane_incident ? |
625 |
eval_isotropic : eval_anisotropic; |
626 |
if (i != argc-1 || fundefined(argv[i]) < 3) { |
627 |
fprintf(stderr, |
628 |
"%s: need single function with 6 arguments: bsdf(ix,iy,iz,ox,oy,oz)\n", |
629 |
progname); |
630 |
fprintf(stderr, "\tor 3 arguments using Dx,Dy,Dz: bsdf(ix,iy,iz)\n"); |
631 |
goto userr; |
632 |
} |
633 |
++eclock; |
634 |
add_wbsdf("-a", 1); |
635 |
add_wbsdf(tfmt[single_plane_incident], 1); |
636 |
if (dofwd) { |
637 |
input_orient = -1; |
638 |
output_orient = -1; |
639 |
prog_start("Evaluating outside reflectance"); |
640 |
(*evf)(argv[i]); |
641 |
output_orient = 1; |
642 |
prog_start("Evaluating outside->inside transmission"); |
643 |
(*evf)(argv[i]); |
644 |
} |
645 |
if (dobwd) { |
646 |
input_orient = 1; |
647 |
output_orient = 1; |
648 |
prog_start("Evaluating inside reflectance"); |
649 |
(*evf)(argv[i]); |
650 |
output_orient = -1; |
651 |
prog_start("Evaluating inside->outside transmission"); |
652 |
(*evf)(argv[i]); |
653 |
} |
654 |
return(wrap_up()); |
655 |
} |
656 |
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()); |
694 |
userr: |
695 |
fprintf(stderr, |
696 |
"Usage: %s [-g Nlog2][-t pctcull][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", |
697 |
progname); |
698 |
fprintf(stderr, |
699 |
" or: %s -t{3|4} [-g Nlog2][-t pctcull][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", |
700 |
progname); |
701 |
return(1); |
702 |
} |