1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: bsdf2ttree.c,v 2.41 2017/05/31 17:25:21 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* Load measured BSDF interpolant and write out as XML file with tensor tree. |
6 |
* |
7 |
* G. Ward |
8 |
*/ |
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|
10 |
#define _USE_MATH_DEFINES |
11 |
#include <stdio.h> |
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#include <stdlib.h> |
13 |
#include <math.h> |
14 |
#include "random.h" |
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#include "platform.h" |
16 |
#include "paths.h" |
17 |
#include "rtio.h" |
18 |
#include "calcomp.h" |
19 |
#include "bsdfrep.h" |
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/* global argv[0] */ |
21 |
char *progname; |
22 |
/* reciprocity averaging option */ |
23 |
static const char *recip = " -a"; |
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/* 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; |
30 |
/* number of super-samples */ |
31 |
#ifndef NSSAMP |
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#define NSSAMP 64 |
33 |
#endif |
34 |
/* limit on number of RBF lobes */ |
35 |
static int lobe_lim = 15000; |
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/* progress bar length */ |
37 |
static int do_prog = 79; |
38 |
|
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#define MAXCARG 512 /* wrapBSDF command */ |
40 |
static char *wrapBSDF[MAXCARG] = {"wrapBSDF", "-U"}; |
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static int wbsdfac = 2; |
42 |
|
43 |
/* Add argument to wrapBSDF, allocating space if !isstatic */ |
44 |
static void |
45 |
add_wbsdf(const char *arg, int isstatic) |
46 |
{ |
47 |
if (arg == NULL) |
48 |
return; |
49 |
if (wbsdfac >= MAXCARG-1) { |
50 |
fputs(progname, stderr); |
51 |
fputs(": too many command arguments to wrapBSDF\n", stderr); |
52 |
exit(1); |
53 |
} |
54 |
if (!*arg) |
55 |
arg = ""; |
56 |
else if (!isstatic) |
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arg = savqstr((char *)arg); |
58 |
|
59 |
wrapBSDF[wbsdfac++] = (char *)arg; |
60 |
} |
61 |
|
62 |
/* Create Yuv component file and add appropriate arguments */ |
63 |
static char * |
64 |
create_component_file(int c) |
65 |
{ |
66 |
static const char sname[3][6] = {"CIE-Y", "CIE-u", "CIE-v"}; |
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static const char cname[4][4] = {"-rf", "-tf", "-tb", "-rb"}; |
68 |
char *tfname = mktemp(savqstr(TEMPLATE)); |
69 |
|
70 |
add_wbsdf("-s", 1); add_wbsdf(sname[c], 1); |
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add_wbsdf(cname[(input_orient>0)<<1 | (output_orient>0)], 1); |
72 |
add_wbsdf(tfname, 1); |
73 |
return(tfname); |
74 |
} |
75 |
|
76 |
/* Start new progress bar */ |
77 |
#define prog_start(s) if (do_prog) fprintf(stderr, "%s: %s...\n", progname, s); else |
78 |
|
79 |
/* Draw progress bar of the appropriate length */ |
80 |
static void |
81 |
prog_show(double frac) |
82 |
{ |
83 |
static unsigned call_cnt = 0; |
84 |
static char lastc[] = "-\\|/"; |
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char pbar[256]; |
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int nchars; |
87 |
|
88 |
if (do_prog <= 1) return; |
89 |
if (do_prog > sizeof(pbar)-2) |
90 |
do_prog = sizeof(pbar)-2; |
91 |
if (frac < 0) frac = 0; |
92 |
else if (frac >= 1) frac = .9999; |
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nchars = do_prog*frac; |
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pbar[0] = '\r'; |
95 |
memset(pbar+1, '*', nchars); |
96 |
pbar[nchars+1] = lastc[call_cnt++ & 3]; |
97 |
memset(pbar+2+nchars, '-', do_prog-nchars-1); |
98 |
pbar[do_prog+1] = '\0'; |
99 |
fputs(pbar, stderr); |
100 |
} |
101 |
|
102 |
/* Finish progress bar */ |
103 |
static void |
104 |
prog_done(void) |
105 |
{ |
106 |
int n = do_prog; |
107 |
|
108 |
if (n <= 1) return; |
109 |
fputc('\r', stderr); |
110 |
while (n--) |
111 |
fputc(' ', stderr); |
112 |
fputc('\r', stderr); |
113 |
} |
114 |
|
115 |
/* Compute absolute relative difference */ |
116 |
static double |
117 |
abs_diff(double v1, double v0) |
118 |
{ |
119 |
if ((v0 < 0) | (v1 < 0)) |
120 |
return(.0); |
121 |
v1 = (v1-v0)*2./(v0+v1+.0001); |
122 |
if (v1 < 0) |
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return(-v1); |
124 |
return(v1); |
125 |
} |
126 |
|
127 |
/* Interpolate and output isotropic BSDF data */ |
128 |
static void |
129 |
eval_isotropic(char *funame) |
130 |
{ |
131 |
const int sqres = 1<<samp_order; |
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const double sqfact = 1./(double)sqres; |
133 |
FILE *ofp, *uvfp[2]; |
134 |
int assignD = 0; |
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char cmd[128]; |
136 |
int ix, ox, oy; |
137 |
double iovec[6]; |
138 |
float bsdf, uv[2]; |
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|
140 |
if (pctcull >= 0) { |
141 |
sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", |
142 |
recip, pctcull, samp_order, create_component_file(0)); |
143 |
ofp = popen(cmd, "w"); |
144 |
if (ofp == NULL) { |
145 |
fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n", |
146 |
progname); |
147 |
exit(1); |
148 |
} |
149 |
SET_FILE_BINARY(ofp); |
150 |
#ifdef getc_unlocked /* avoid lock/unlock overhead */ |
151 |
flockfile(ofp); |
152 |
#endif |
153 |
if (rbf_colorimetry == RBCtristimulus) { |
154 |
double uvcull = 100. - (100.-pctcull)*.25; |
155 |
sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", |
156 |
recip, uvcull, samp_order, create_component_file(1)); |
157 |
uvfp[0] = popen(cmd, "w"); |
158 |
sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", |
159 |
recip, uvcull, samp_order, create_component_file(2)); |
160 |
uvfp[1] = popen(cmd, "w"); |
161 |
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
162 |
fprintf(stderr, "%s: cannot open pipes to uv output\n", |
163 |
progname); |
164 |
exit(1); |
165 |
} |
166 |
SET_FILE_BINARY(uvfp[0]); SET_FILE_BINARY(uvfp[1]); |
167 |
#ifdef getc_unlocked |
168 |
flockfile(uvfp[0]); flockfile(uvfp[1]); |
169 |
#endif |
170 |
} |
171 |
} else { |
172 |
ofp = fopen(create_component_file(0), "w"); |
173 |
if (ofp == NULL) { |
174 |
fprintf(stderr, "%s: cannot create Y output file\n", |
175 |
progname); |
176 |
exit(1); |
177 |
} |
178 |
fputs("{\n", ofp); |
179 |
if (rbf_colorimetry == RBCtristimulus) { |
180 |
uvfp[0] = fopen(create_component_file(1), "w"); |
181 |
uvfp[1] = fopen(create_component_file(2), "w"); |
182 |
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
183 |
fprintf(stderr, "%s: cannot create uv output file(s)\n", |
184 |
progname); |
185 |
exit(1); |
186 |
} |
187 |
fputs("{\n", uvfp[0]); |
188 |
fputs("{\n", uvfp[1]); |
189 |
} |
190 |
} |
191 |
if (funame != NULL) /* need to assign Dx, Dy, Dz? */ |
192 |
assignD = (fundefined(funame) < 6); |
193 |
/* run through directions */ |
194 |
for (ix = 0; ix < sqres/2; ix++) { |
195 |
RBFNODE *rbf = NULL; |
196 |
iovec[0] = 2.*sqfact*(ix+.5) - 1.; |
197 |
iovec[1] = .0; |
198 |
iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0]); |
199 |
if (funame == NULL) |
200 |
rbf = advect_rbf(iovec, lobe_lim); |
201 |
for (ox = 0; ox < sqres; ox++) { |
202 |
float last_bsdf = -1; |
203 |
for (oy = 0; oy < sqres; oy++) { |
204 |
SDsquare2disk(iovec+3, (ox+.5)*sqfact, (oy+.5)*sqfact); |
205 |
iovec[5] = output_orient * |
206 |
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
207 |
if (funame == NULL) { |
208 |
SDValue sdv; |
209 |
eval_rbfcol(&sdv, rbf, iovec+3); |
210 |
bsdf = sdv.cieY; |
211 |
#if (NSSAMP > 0) |
212 |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
213 |
int ssi; |
214 |
double ssa[2], sum = 0, usum = 0, vsum = 0; |
215 |
/* super-sample voxel */ |
216 |
for (ssi = NSSAMP; ssi--; ) { |
217 |
SDmultiSamp(ssa, 2, (ssi+frandom()) * |
218 |
(1./NSSAMP)); |
219 |
SDsquare2disk(iovec+3, (ox+ssa[0])*sqfact, |
220 |
(oy+ssa[1])*sqfact); |
221 |
iovec[5] = output_orient * |
222 |
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
223 |
eval_rbfcol(&sdv, rbf, iovec+3); |
224 |
sum += sdv.cieY; |
225 |
if (rbf_colorimetry == RBCtristimulus) { |
226 |
sdv.cieY /= |
227 |
-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.; |
228 |
usum += 4.*sdv.spec.cx * sdv.cieY; |
229 |
vsum += 9.*sdv.spec.cy * sdv.cieY; |
230 |
} |
231 |
} |
232 |
bsdf = sum * (1./NSSAMP); |
233 |
if (rbf_colorimetry == RBCtristimulus) { |
234 |
uv[0] = usum / (sum+FTINY); |
235 |
uv[1] = vsum / (sum+FTINY); |
236 |
} |
237 |
} else |
238 |
#endif |
239 |
if (rbf_colorimetry == RBCtristimulus) { |
240 |
uv[0] = uv[1] = 1. / |
241 |
(-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); |
242 |
uv[0] *= 4.*sdv.spec.cx; |
243 |
uv[1] *= 9.*sdv.spec.cy; |
244 |
} |
245 |
} else { |
246 |
if (assignD) { |
247 |
varset("Dx", '=', -iovec[3]); |
248 |
varset("Dy", '=', -iovec[4]); |
249 |
varset("Dz", '=', -iovec[5]); |
250 |
++eclock; |
251 |
} |
252 |
bsdf = funvalue(funame, 6, iovec); |
253 |
#if (NSSAMP > 0) |
254 |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
255 |
int ssi; |
256 |
double ssa[3], ssvec[6], sum = 0; |
257 |
/* super-sample voxel */ |
258 |
for (ssi = NSSAMP; ssi--; ) { |
259 |
SDmultiSamp(ssa, 3, (ssi+frandom()) * |
260 |
(1./NSSAMP)); |
261 |
ssvec[0] = 2.*sqfact*(ix+ssa[0]) - 1.; |
262 |
ssvec[1] = .0; |
263 |
ssvec[2] = input_orient * |
264 |
sqrt(1. - ssvec[0]*ssvec[0]); |
265 |
SDsquare2disk(ssvec+3, (ox+ssa[1])*sqfact, |
266 |
(oy+ssa[2])*sqfact); |
267 |
ssvec[5] = output_orient * |
268 |
sqrt(1. - ssvec[3]*ssvec[3] - |
269 |
ssvec[4]*ssvec[4]); |
270 |
if (assignD) { |
271 |
varset("Dx", '=', -ssvec[3]); |
272 |
varset("Dy", '=', -ssvec[4]); |
273 |
varset("Dz", '=', -ssvec[5]); |
274 |
++eclock; |
275 |
} |
276 |
sum += funvalue(funame, 6, ssvec); |
277 |
} |
278 |
bsdf = sum * (1./NSSAMP); |
279 |
} |
280 |
#endif |
281 |
} |
282 |
if (pctcull >= 0) |
283 |
putbinary(&bsdf, sizeof(bsdf), 1, ofp); |
284 |
else |
285 |
fprintf(ofp, "\t%.3e\n", bsdf); |
286 |
|
287 |
if (rbf_colorimetry == RBCtristimulus) { |
288 |
if (pctcull >= 0) { |
289 |
putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]); |
290 |
putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]); |
291 |
} else { |
292 |
fprintf(uvfp[0], "\t%.3e\n", uv[0]); |
293 |
fprintf(uvfp[1], "\t%.3e\n", uv[1]); |
294 |
} |
295 |
} |
296 |
last_bsdf = bsdf; |
297 |
} |
298 |
} |
299 |
if (rbf != NULL) |
300 |
free(rbf); |
301 |
prog_show((ix+1.)*(2.*sqfact)); |
302 |
} |
303 |
prog_done(); |
304 |
if (pctcull >= 0) { /* finish output */ |
305 |
if (pclose(ofp)) { |
306 |
fprintf(stderr, "%s: error running rttree_reduce on Y\n", |
307 |
progname); |
308 |
exit(1); |
309 |
} |
310 |
if (rbf_colorimetry == RBCtristimulus && |
311 |
(pclose(uvfp[0]) || pclose(uvfp[1]))) { |
312 |
fprintf(stderr, "%s: error running rttree_reduce on uv\n", |
313 |
progname); |
314 |
exit(1); |
315 |
} |
316 |
} else { |
317 |
for (ix = sqres*sqres*sqres/2; ix--; ) |
318 |
fputs("\t0\n", ofp); |
319 |
fputs("}\n", ofp); |
320 |
if (fclose(ofp)) { |
321 |
fprintf(stderr, "%s: error writing Y file\n", |
322 |
progname); |
323 |
exit(1); |
324 |
} |
325 |
if (rbf_colorimetry == RBCtristimulus) { |
326 |
for (ix = sqres*sqres*sqres/2; ix--; ) { |
327 |
fputs("\t0\n", uvfp[0]); |
328 |
fputs("\t0\n", uvfp[1]); |
329 |
} |
330 |
fputs("}\n", uvfp[0]); |
331 |
fputs("}\n", uvfp[1]); |
332 |
if (fclose(uvfp[0]) || fclose(uvfp[1])) { |
333 |
fprintf(stderr, "%s: error writing uv file(s)\n", |
334 |
progname); |
335 |
exit(1); |
336 |
} |
337 |
} |
338 |
} |
339 |
} |
340 |
|
341 |
/* Interpolate and output anisotropic BSDF data */ |
342 |
static void |
343 |
eval_anisotropic(char *funame) |
344 |
{ |
345 |
const int sqres = 1<<samp_order; |
346 |
const double sqfact = 1./(double)sqres; |
347 |
FILE *ofp, *uvfp[2]; |
348 |
int assignD = 0; |
349 |
char cmd[128]; |
350 |
int ix, iy, ox, oy; |
351 |
double iovec[6]; |
352 |
float bsdf, uv[2]; |
353 |
|
354 |
if (pctcull >= 0) { |
355 |
const char *avgopt = (input_orient>0 ^ output_orient>0) |
356 |
? "" : recip; |
357 |
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", |
358 |
avgopt, pctcull, samp_order, |
359 |
create_component_file(0)); |
360 |
ofp = popen(cmd, "w"); |
361 |
if (ofp == NULL) { |
362 |
fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n", |
363 |
progname); |
364 |
exit(1); |
365 |
} |
366 |
SET_FILE_BINARY(ofp); |
367 |
#ifdef getc_unlocked /* avoid lock/unlock overhead */ |
368 |
flockfile(ofp); |
369 |
#endif |
370 |
if (rbf_colorimetry == RBCtristimulus) { |
371 |
double uvcull = 100. - (100.-pctcull)*.25; |
372 |
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", |
373 |
avgopt, uvcull, samp_order, |
374 |
create_component_file(1)); |
375 |
uvfp[0] = popen(cmd, "w"); |
376 |
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", |
377 |
avgopt, uvcull, samp_order, |
378 |
create_component_file(2)); |
379 |
uvfp[1] = popen(cmd, "w"); |
380 |
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
381 |
fprintf(stderr, "%s: cannot open pipes to uv output\n", |
382 |
progname); |
383 |
exit(1); |
384 |
} |
385 |
SET_FILE_BINARY(uvfp[0]); SET_FILE_BINARY(uvfp[1]); |
386 |
#ifdef getc_unlocked |
387 |
flockfile(uvfp[0]); flockfile(uvfp[1]); |
388 |
#endif |
389 |
} |
390 |
} else { |
391 |
ofp = fopen(create_component_file(0), "w"); |
392 |
if (ofp == NULL) { |
393 |
fprintf(stderr, "%s: cannot create Y output file\n", |
394 |
progname); |
395 |
exit(1); |
396 |
} |
397 |
fputs("{\n", ofp); |
398 |
if (rbf_colorimetry == RBCtristimulus) { |
399 |
uvfp[0] = fopen(create_component_file(1), "w"); |
400 |
uvfp[1] = fopen(create_component_file(2), "w"); |
401 |
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
402 |
fprintf(stderr, "%s: cannot create uv output file(s)\n", |
403 |
progname); |
404 |
exit(1); |
405 |
} |
406 |
fputs("{\n", uvfp[0]); |
407 |
fputs("{\n", uvfp[1]); |
408 |
} |
409 |
} |
410 |
if (funame != NULL) /* need to assign Dx, Dy, Dz? */ |
411 |
assignD = (fundefined(funame) < 6); |
412 |
/* run through directions */ |
413 |
for (ix = 0; ix < sqres; ix++) |
414 |
for (iy = 0; iy < sqres; iy++) { |
415 |
RBFNODE *rbf = NULL; /* Klems reversal */ |
416 |
SDsquare2disk(iovec, 1.-(ix+.5)*sqfact, 1.-(iy+.5)*sqfact); |
417 |
iovec[2] = input_orient * |
418 |
sqrt(1. - iovec[0]*iovec[0] - iovec[1]*iovec[1]); |
419 |
if (funame == NULL) |
420 |
rbf = advect_rbf(iovec, lobe_lim); |
421 |
for (ox = 0; ox < sqres; ox++) { |
422 |
float last_bsdf = -1; |
423 |
for (oy = 0; oy < sqres; oy++) { |
424 |
SDsquare2disk(iovec+3, (ox+.5)*sqfact, (oy+.5)*sqfact); |
425 |
iovec[5] = output_orient * |
426 |
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
427 |
if (funame == NULL) { |
428 |
SDValue sdv; |
429 |
eval_rbfcol(&sdv, rbf, iovec+3); |
430 |
bsdf = sdv.cieY; |
431 |
#if (NSSAMP > 0) |
432 |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
433 |
int ssi; |
434 |
double ssa[2], sum = 0, usum = 0, vsum = 0; |
435 |
/* super-sample voxel */ |
436 |
for (ssi = NSSAMP; ssi--; ) { |
437 |
SDmultiSamp(ssa, 2, (ssi+frandom()) * |
438 |
(1./NSSAMP)); |
439 |
SDsquare2disk(iovec+3, (ox+ssa[0])*sqfact, |
440 |
(oy+ssa[1])*sqfact); |
441 |
iovec[5] = output_orient * |
442 |
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
443 |
eval_rbfcol(&sdv, rbf, iovec+3); |
444 |
sum += sdv.cieY; |
445 |
if (rbf_colorimetry == RBCtristimulus) { |
446 |
sdv.cieY /= |
447 |
-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.; |
448 |
usum += 4.*sdv.spec.cx * sdv.cieY; |
449 |
vsum += 9.*sdv.spec.cy * sdv.cieY; |
450 |
} |
451 |
} |
452 |
bsdf = sum * (1./NSSAMP); |
453 |
if (rbf_colorimetry == RBCtristimulus) { |
454 |
uv[0] = usum / (sum+FTINY); |
455 |
uv[1] = vsum / (sum+FTINY); |
456 |
} |
457 |
} else |
458 |
#endif |
459 |
if (rbf_colorimetry == RBCtristimulus) { |
460 |
uv[0] = uv[1] = 1. / |
461 |
(-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); |
462 |
uv[0] *= 4.*sdv.spec.cx; |
463 |
uv[1] *= 9.*sdv.spec.cy; |
464 |
} |
465 |
} else { |
466 |
if (assignD) { |
467 |
varset("Dx", '=', -iovec[3]); |
468 |
varset("Dy", '=', -iovec[4]); |
469 |
varset("Dz", '=', -iovec[5]); |
470 |
++eclock; |
471 |
} |
472 |
bsdf = funvalue(funame, 6, iovec); |
473 |
#if (NSSAMP > 0) |
474 |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
475 |
int ssi; |
476 |
double ssa[4], ssvec[6], sum = 0; |
477 |
/* super-sample voxel */ |
478 |
for (ssi = NSSAMP; ssi--; ) { |
479 |
SDmultiSamp(ssa, 4, (ssi+frandom()) * |
480 |
(1./NSSAMP)); |
481 |
SDsquare2disk(ssvec, 1.-(ix+ssa[0])*sqfact, |
482 |
1.-(iy+ssa[1])*sqfact); |
483 |
ssvec[2] = input_orient * |
484 |
sqrt(1. - ssvec[0]*ssvec[0] - |
485 |
ssvec[1]*ssvec[1]); |
486 |
SDsquare2disk(ssvec+3, (ox+ssa[2])*sqfact, |
487 |
(oy+ssa[3])*sqfact); |
488 |
ssvec[5] = output_orient * |
489 |
sqrt(1. - ssvec[3]*ssvec[3] - |
490 |
ssvec[4]*ssvec[4]); |
491 |
if (assignD) { |
492 |
varset("Dx", '=', -ssvec[3]); |
493 |
varset("Dy", '=', -ssvec[4]); |
494 |
varset("Dz", '=', -ssvec[5]); |
495 |
++eclock; |
496 |
} |
497 |
sum += funvalue(funame, 6, ssvec); |
498 |
} |
499 |
bsdf = sum * (1./NSSAMP); |
500 |
} |
501 |
#endif |
502 |
} |
503 |
if (pctcull >= 0) |
504 |
putbinary(&bsdf, sizeof(bsdf), 1, ofp); |
505 |
else |
506 |
fprintf(ofp, "\t%.3e\n", bsdf); |
507 |
|
508 |
if (rbf_colorimetry == RBCtristimulus) { |
509 |
if (pctcull >= 0) { |
510 |
putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]); |
511 |
putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]); |
512 |
} else { |
513 |
fprintf(uvfp[0], "\t%.3e\n", uv[0]); |
514 |
fprintf(uvfp[1], "\t%.3e\n", uv[1]); |
515 |
} |
516 |
} |
517 |
last_bsdf = bsdf; |
518 |
} |
519 |
} |
520 |
if (rbf != NULL) |
521 |
free(rbf); |
522 |
prog_show((ix*sqres+iy+1.)/(sqres*sqres)); |
523 |
} |
524 |
prog_done(); |
525 |
if (pctcull >= 0) { /* finish output */ |
526 |
if (pclose(ofp)) { |
527 |
fprintf(stderr, "%s: error running rttree_reduce on Y\n", |
528 |
progname); |
529 |
exit(1); |
530 |
} |
531 |
if (rbf_colorimetry == RBCtristimulus && |
532 |
(pclose(uvfp[0]) || pclose(uvfp[1]))) { |
533 |
fprintf(stderr, "%s: error running rttree_reduce on uv\n", |
534 |
progname); |
535 |
exit(1); |
536 |
} |
537 |
} else { |
538 |
fputs("}\n", ofp); |
539 |
if (fclose(ofp)) { |
540 |
fprintf(stderr, "%s: error writing Y file\n", |
541 |
progname); |
542 |
exit(1); |
543 |
} |
544 |
if (rbf_colorimetry == RBCtristimulus) { |
545 |
fputs("}\n", uvfp[0]); |
546 |
fputs("}\n", uvfp[1]); |
547 |
if (fclose(uvfp[0]) || fclose(uvfp[1])) { |
548 |
fprintf(stderr, "%s: error writing uv file(s)\n", |
549 |
progname); |
550 |
exit(1); |
551 |
} |
552 |
} |
553 |
} |
554 |
} |
555 |
|
556 |
#if defined(_WIN32) || defined(_WIN64) |
557 |
/* Execute wrapBSDF command (may never return) */ |
558 |
static int |
559 |
wrap_up(void) |
560 |
{ |
561 |
char cmd[8192]; |
562 |
|
563 |
if (bsdf_manuf[0]) { |
564 |
add_wbsdf("-f", 1); |
565 |
strcpy(cmd, "m="); |
566 |
strcpy(cmd+2, bsdf_manuf); |
567 |
add_wbsdf(cmd, 0); |
568 |
} |
569 |
if (bsdf_name[0]) { |
570 |
add_wbsdf("-f", 1); |
571 |
strcpy(cmd, "n="); |
572 |
strcpy(cmd+2, bsdf_name); |
573 |
add_wbsdf(cmd, 0); |
574 |
} |
575 |
if (!convert_commandline(cmd, sizeof(cmd), wrapBSDF)) { |
576 |
fputs(progname, stderr); |
577 |
fputs(": command line too long in wrap_up()\n", stderr); |
578 |
return(1); |
579 |
} |
580 |
return(system(cmd)); |
581 |
} |
582 |
#else |
583 |
/* Execute wrapBSDF command (may never return) */ |
584 |
static int |
585 |
wrap_up(void) |
586 |
{ |
587 |
char buf[256]; |
588 |
char *compath = getpath((char *)wrapBSDF[0], getenv("PATH"), X_OK); |
589 |
|
590 |
if (compath == NULL) { |
591 |
fprintf(stderr, "%s: cannot locate %s\n", progname, wrapBSDF[0]); |
592 |
return(1); |
593 |
} |
594 |
if (bsdf_manuf[0]) { |
595 |
add_wbsdf("-f", 1); |
596 |
strcpy(buf, "m="); |
597 |
strcpy(buf+2, bsdf_manuf); |
598 |
add_wbsdf(buf, 0); |
599 |
} |
600 |
if (bsdf_name[0]) { |
601 |
add_wbsdf("-f", 1); |
602 |
strcpy(buf, "n="); |
603 |
strcpy(buf+2, bsdf_name); |
604 |
add_wbsdf(buf, 0); |
605 |
} |
606 |
execv(compath, wrapBSDF); /* successful call never returns */ |
607 |
perror(compath); |
608 |
return(1); |
609 |
} |
610 |
#endif |
611 |
|
612 |
/* Read in BSDF and interpolate as tensor tree representation */ |
613 |
int |
614 |
main(int argc, char *argv[]) |
615 |
{ |
616 |
static char tfmt[2][4] = {"t4", "t3"}; |
617 |
int dofwd = 0, dobwd = 1; |
618 |
char buf[2048]; |
619 |
int i, na; |
620 |
|
621 |
progname = argv[0]; |
622 |
esupport |= E_VARIABLE|E_FUNCTION|E_RCONST; |
623 |
esupport &= ~(E_INCHAN|E_OUTCHAN); |
624 |
scompile("PI:3.14159265358979323846", NULL, 0); |
625 |
biggerlib(); |
626 |
for (i = 1; i < argc && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) |
627 |
switch (argv[i][1]) { /* get options */ |
628 |
case 'e': |
629 |
scompile(argv[++i], NULL, 0); |
630 |
break; |
631 |
case 'f': |
632 |
if (!argv[i][2]) { |
633 |
if (strchr(argv[++i], '=') != NULL) { |
634 |
add_wbsdf("-f", 1); |
635 |
add_wbsdf(argv[i], 1); |
636 |
} else |
637 |
fcompile(argv[i]); |
638 |
} else |
639 |
dofwd = (argv[i][0] == '+'); |
640 |
break; |
641 |
case 'a': |
642 |
recip = (argv[i][0] == '+') ? " -a" : ""; |
643 |
break; |
644 |
case 'b': |
645 |
dobwd = (argv[i][0] == '+'); |
646 |
break; |
647 |
case 't': |
648 |
switch (argv[i][2]) { |
649 |
case '3': |
650 |
single_plane_incident = 1; |
651 |
break; |
652 |
case '4': |
653 |
single_plane_incident = 0; |
654 |
break; |
655 |
case '\0': |
656 |
pctcull = atof(argv[++i]); |
657 |
break; |
658 |
default: |
659 |
goto userr; |
660 |
} |
661 |
break; |
662 |
case 'g': |
663 |
samp_order = atoi(argv[++i]); |
664 |
break; |
665 |
case 'l': |
666 |
lobe_lim = atoi(argv[++i]); |
667 |
break; |
668 |
case 'p': |
669 |
do_prog = atoi(argv[i]+2); |
670 |
break; |
671 |
case 'W': |
672 |
add_wbsdf(argv[i], 1); |
673 |
break; |
674 |
case 'u': |
675 |
case 'C': |
676 |
add_wbsdf(argv[i], 1); |
677 |
add_wbsdf(argv[++i], 1); |
678 |
break; |
679 |
default: |
680 |
goto userr; |
681 |
} |
682 |
strcpy(buf, "File produced by: "); |
683 |
if (convert_commandline(buf+18, sizeof(buf)-18, argv) != NULL) { |
684 |
add_wbsdf("-C", 1); add_wbsdf(buf, 0); |
685 |
} |
686 |
if (single_plane_incident >= 0) { /* function-based BSDF? */ |
687 |
void (*evf)(char *s) = single_plane_incident ? |
688 |
eval_isotropic : eval_anisotropic; |
689 |
if (i != argc-1 || fundefined(argv[i]) < 3) { |
690 |
fprintf(stderr, |
691 |
"%s: need single function with 6 arguments: bsdf(ix,iy,iz,ox,oy,oz)\n", |
692 |
progname); |
693 |
fprintf(stderr, "\tor 3 arguments using Dx,Dy,Dz: bsdf(ix,iy,iz)\n"); |
694 |
goto userr; |
695 |
} |
696 |
++eclock; |
697 |
add_wbsdf("-a", 1); |
698 |
add_wbsdf(tfmt[single_plane_incident], 1); |
699 |
if (dofwd) { |
700 |
input_orient = -1; |
701 |
output_orient = -1; |
702 |
prog_start("Evaluating outside reflectance"); |
703 |
(*evf)(argv[i]); |
704 |
output_orient = 1; |
705 |
prog_start("Evaluating outside->inside transmission"); |
706 |
(*evf)(argv[i]); |
707 |
} |
708 |
if (dobwd) { |
709 |
input_orient = 1; |
710 |
output_orient = 1; |
711 |
prog_start("Evaluating inside reflectance"); |
712 |
(*evf)(argv[i]); |
713 |
output_orient = -1; |
714 |
prog_start("Evaluating inside->outside transmission"); |
715 |
(*evf)(argv[i]); |
716 |
} |
717 |
return(wrap_up()); |
718 |
} |
719 |
if (i < argc) { /* open input files if given */ |
720 |
int nbsdf = 0; |
721 |
for ( ; i < argc; i++) { /* interpolate each component */ |
722 |
char pbuf[256]; |
723 |
FILE *fpin = fopen(argv[i], "rb"); |
724 |
if (fpin == NULL) { |
725 |
fprintf(stderr, "%s: cannot open BSDF interpolant '%s'\n", |
726 |
progname, argv[i]); |
727 |
return(1); |
728 |
} |
729 |
if (!load_bsdf_rep(fpin)) |
730 |
return(1); |
731 |
fclose(fpin); |
732 |
sprintf(pbuf, "Interpolating component '%s'", argv[i]); |
733 |
prog_start(pbuf); |
734 |
if (!nbsdf++) { |
735 |
add_wbsdf("-a", 1); |
736 |
add_wbsdf(tfmt[single_plane_incident], 1); |
737 |
} |
738 |
if (single_plane_incident) |
739 |
eval_isotropic(NULL); |
740 |
else |
741 |
eval_anisotropic(NULL); |
742 |
} |
743 |
return(wrap_up()); |
744 |
} |
745 |
SET_FILE_BINARY(stdin); /* load from stdin */ |
746 |
if (!load_bsdf_rep(stdin)) |
747 |
return(1); |
748 |
prog_start("Interpolating from standard input"); |
749 |
add_wbsdf("-a", 1); |
750 |
add_wbsdf(tfmt[single_plane_incident], 1); |
751 |
if (single_plane_incident) /* resample dist. */ |
752 |
eval_isotropic(NULL); |
753 |
else |
754 |
eval_anisotropic(NULL); |
755 |
|
756 |
return(wrap_up()); |
757 |
userr: |
758 |
fprintf(stderr, |
759 |
"Usage: %s [{+|-}a][-g Nlog2][-t pctcull][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", |
760 |
progname); |
761 |
fprintf(stderr, |
762 |
" or: %s -t{3|4} [{+|-}a][-g Nlog2][-t pctcull][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", |
763 |
progname); |
764 |
return(1); |
765 |
} |