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root/radiance/ray/src/cv/bsdf2ttree.c
Revision: 2.44
Committed: Sat Dec 28 18:05:14 2019 UTC (4 years, 4 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.43: +1 -2 lines
Log Message: 
Removed redundant include files

File Contents

# User Rev Content
1 greg 2.1 #ifndef lint
2 greg 2.44 static const char RCSid[] = "$Id: bsdf2ttree.c,v 2.43 2018/05/04 23:56:49 greg Exp $";
3 greg 2.1 #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 <stdlib.h>
12     #include <math.h>
13 greg 2.23 #include "random.h"
14 greg 2.1 #include "platform.h"
15 greg 2.34 #include "paths.h"
16     #include "rtio.h"
17 greg 2.11 #include "calcomp.h"
18 greg 2.1 #include "bsdfrep.h"
19     /* global argv[0] */
20     char *progname;
21 greg 2.41 /* reciprocity averaging option */
22     static const char *recip = " -a";
23 greg 2.1 /* percentage to cull (<0 to turn off) */
24 greg 2.31 static double pctcull = 90.;
25 greg 2.1 /* sampling order */
26 greg 2.31 static int samp_order = 6;
27 greg 2.15 /* super-sampling threshold */
28     const double ssamp_thresh = 0.35;
29     /* number of super-samples */
30 greg 2.28 #ifndef NSSAMP
31 greg 2.38 #define NSSAMP 64
32 greg 2.28 #endif
33 greg 2.18 /* limit on number of RBF lobes */
34     static int lobe_lim = 15000;
35 greg 2.26 /* progress bar length */
36     static int do_prog = 79;
37    
38 greg 2.34 #define MAXCARG 512 /* wrapBSDF command */
39     static char *wrapBSDF[MAXCARG] = {"wrapBSDF", "-U"};
40     static int wbsdfac = 2;
41    
42 greg 2.39 /* Add argument to wrapBSDF, allocating space if !isstatic */
43 greg 2.34 static void
44     add_wbsdf(const char *arg, int isstatic)
45     {
46     if (arg == NULL)
47     return;
48     if (wbsdfac >= MAXCARG-1) {
49     fputs(progname, stderr);
50     fputs(": too many command arguments to wrapBSDF\n", stderr);
51     exit(1);
52     }
53     if (!*arg)
54     arg = "";
55     else if (!isstatic)
56     arg = savqstr((char *)arg);
57    
58     wrapBSDF[wbsdfac++] = (char *)arg;
59     }
60    
61     /* Create Yuv component file and add appropriate arguments */
62     static char *
63     create_component_file(int c)
64     {
65     static const char sname[3][6] = {"CIE-Y", "CIE-u", "CIE-v"};
66     static const char cname[4][4] = {"-rf", "-tf", "-tb", "-rb"};
67     char *tfname = mktemp(savqstr(TEMPLATE));
68    
69     add_wbsdf("-s", 1); add_wbsdf(sname[c], 1);
70     add_wbsdf(cname[(input_orient>0)<<1 | (output_orient>0)], 1);
71     add_wbsdf(tfname, 1);
72     return(tfname);
73     }
74 greg 2.26
75     /* Start new progress bar */
76     #define prog_start(s) if (do_prog) fprintf(stderr, "%s: %s...\n", progname, s); else
77    
78     /* Draw progress bar of the appropriate length */
79     static void
80     prog_show(double frac)
81     {
82 greg 2.30 static unsigned call_cnt = 0;
83     static char lastc[] = "-\\|/";
84     char pbar[256];
85     int nchars;
86 greg 2.26
87 greg 2.30 if (do_prog <= 1) return;
88 greg 2.26 if (do_prog > sizeof(pbar)-2)
89     do_prog = sizeof(pbar)-2;
90     if (frac < 0) frac = 0;
91 greg 2.30 else if (frac >= 1) frac = .9999;
92     nchars = do_prog*frac;
93 greg 2.26 pbar[0] = '\r';
94     memset(pbar+1, '*', nchars);
95 greg 2.30 pbar[nchars+1] = lastc[call_cnt++ & 3];
96     memset(pbar+2+nchars, '-', do_prog-nchars-1);
97 greg 2.26 pbar[do_prog+1] = '\0';
98     fputs(pbar, stderr);
99     }
100    
101     /* Finish progress bar */
102 greg 2.27 static void
103     prog_done(void)
104     {
105     int n = do_prog;
106    
107     if (n <= 1) return;
108     fputc('\r', stderr);
109     while (n--)
110     fputc(' ', stderr);
111     fputc('\r', stderr);
112     }
113 greg 2.1
114 greg 2.15 /* Compute absolute relative difference */
115     static double
116     abs_diff(double v1, double v0)
117     {
118     if ((v0 < 0) | (v1 < 0))
119     return(.0);
120     v1 = (v1-v0)*2./(v0+v1+.0001);
121     if (v1 < 0)
122     return(-v1);
123     return(v1);
124     }
125    
126 greg 2.1 /* Interpolate and output isotropic BSDF data */
127     static void
128 greg 2.11 eval_isotropic(char *funame)
129 greg 2.1 {
130     const int sqres = 1<<samp_order;
131 greg 2.42 const double sqfact = 1./(double)sqres;
132 greg 2.34 FILE *ofp, *uvfp[2];
133 greg 2.17 int assignD = 0;
134 greg 2.1 char cmd[128];
135     int ix, ox, oy;
136 greg 2.11 double iovec[6];
137 greg 2.34 float bsdf, uv[2];
138 greg 2.15
139 greg 2.11 if (pctcull >= 0) {
140 greg 2.41 sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s",
141     recip, pctcull, samp_order, create_component_file(0));
142 greg 2.1 ofp = popen(cmd, "w");
143     if (ofp == NULL) {
144     fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n",
145     progname);
146     exit(1);
147     }
148     SET_FILE_BINARY(ofp);
149 greg 2.25 #ifdef getc_unlocked /* avoid lock/unlock overhead */
150     flockfile(ofp);
151     #endif
152 greg 2.34 if (rbf_colorimetry == RBCtristimulus) {
153     double uvcull = 100. - (100.-pctcull)*.25;
154 greg 2.41 sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s",
155     recip, uvcull, samp_order, create_component_file(1));
156 greg 2.34 uvfp[0] = popen(cmd, "w");
157 greg 2.41 sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s",
158     recip, uvcull, samp_order, create_component_file(2));
159 greg 2.34 uvfp[1] = popen(cmd, "w");
160     if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) {
161     fprintf(stderr, "%s: cannot open pipes to uv output\n",
162     progname);
163     exit(1);
164     }
165     SET_FILE_BINARY(uvfp[0]); SET_FILE_BINARY(uvfp[1]);
166     #ifdef getc_unlocked
167     flockfile(uvfp[0]); flockfile(uvfp[1]);
168     #endif
169     }
170     } else {
171     ofp = fopen(create_component_file(0), "w");
172     if (ofp == NULL) {
173     fprintf(stderr, "%s: cannot create Y output file\n",
174     progname);
175     exit(1);
176     }
177     fputs("{\n", ofp);
178     if (rbf_colorimetry == RBCtristimulus) {
179     uvfp[0] = fopen(create_component_file(1), "w");
180     uvfp[1] = fopen(create_component_file(2), "w");
181     if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) {
182     fprintf(stderr, "%s: cannot create uv output file(s)\n",
183     progname);
184     exit(1);
185     }
186     fputs("{\n", uvfp[0]);
187     fputs("{\n", uvfp[1]);
188     }
189     }
190 greg 2.35 if (funame != NULL) /* need to assign Dx, Dy, Dz? */
191 greg 2.17 assignD = (fundefined(funame) < 6);
192 greg 2.1 /* run through directions */
193     for (ix = 0; ix < sqres/2; ix++) {
194 greg 2.11 RBFNODE *rbf = NULL;
195 greg 2.42 iovec[0] = 2.*sqfact*(ix+.5) - 1.;
196 greg 2.11 iovec[1] = .0;
197     iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0]);
198     if (funame == NULL)
199 greg 2.18 rbf = advect_rbf(iovec, lobe_lim);
200 greg 2.15 for (ox = 0; ox < sqres; ox++) {
201     float last_bsdf = -1;
202 greg 2.1 for (oy = 0; oy < sqres; oy++) {
203 greg 2.42 SDsquare2disk(iovec+3, (ox+.5)*sqfact, (oy+.5)*sqfact);
204 greg 2.11 iovec[5] = output_orient *
205     sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]);
206 greg 2.34 if (funame == NULL) {
207     SDValue sdv;
208     eval_rbfcol(&sdv, rbf, iovec+3);
209     bsdf = sdv.cieY;
210 greg 2.42 #if (NSSAMP > 0)
211     if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) {
212     int ssi;
213     double ssa[2], sum = 0, usum = 0, vsum = 0;
214     /* super-sample voxel */
215     for (ssi = NSSAMP; ssi--; ) {
216     SDmultiSamp(ssa, 2, (ssi+frandom()) *
217     (1./NSSAMP));
218     SDsquare2disk(iovec+3, (ox+ssa[0])*sqfact,
219     (oy+ssa[1])*sqfact);
220     iovec[5] = output_orient *
221     sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]);
222     eval_rbfcol(&sdv, rbf, iovec+3);
223     sum += sdv.cieY;
224     if (rbf_colorimetry == RBCtristimulus) {
225     sdv.cieY /=
226     -2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.;
227     usum += 4.*sdv.spec.cx * sdv.cieY;
228     vsum += 9.*sdv.spec.cy * sdv.cieY;
229     }
230     }
231     bsdf = sum * (1./NSSAMP);
232     if (rbf_colorimetry == RBCtristimulus) {
233     uv[0] = usum / (sum+FTINY);
234     uv[1] = vsum / (sum+FTINY);
235     }
236     } else
237     #endif
238 greg 2.34 if (rbf_colorimetry == RBCtristimulus) {
239     uv[0] = uv[1] = 1. /
240     (-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.);
241     uv[0] *= 4.*sdv.spec.cx;
242     uv[1] *= 9.*sdv.spec.cy;
243     }
244     } else {
245 greg 2.17 if (assignD) {
246     varset("Dx", '=', -iovec[3]);
247     varset("Dy", '=', -iovec[4]);
248     varset("Dz", '=', -iovec[5]);
249     ++eclock;
250     }
251 greg 2.15 bsdf = funvalue(funame, 6, iovec);
252 greg 2.28 #if (NSSAMP > 0)
253 greg 2.15 if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) {
254 greg 2.28 int ssi;
255     double ssa[3], ssvec[6], sum = 0;
256     /* super-sample voxel */
257     for (ssi = NSSAMP; ssi--; ) {
258     SDmultiSamp(ssa, 3, (ssi+frandom()) *
259     (1./NSSAMP));
260 greg 2.42 ssvec[0] = 2.*sqfact*(ix+ssa[0]) - 1.;
261 greg 2.15 ssvec[1] = .0;
262     ssvec[2] = input_orient *
263     sqrt(1. - ssvec[0]*ssvec[0]);
264 greg 2.42 SDsquare2disk(ssvec+3, (ox+ssa[1])*sqfact,
265     (oy+ssa[2])*sqfact);
266 greg 2.15 ssvec[5] = output_orient *
267     sqrt(1. - ssvec[3]*ssvec[3] -
268     ssvec[4]*ssvec[4]);
269 greg 2.17 if (assignD) {
270 greg 2.28 varset("Dx", '=', -ssvec[3]);
271     varset("Dy", '=', -ssvec[4]);
272     varset("Dz", '=', -ssvec[5]);
273 greg 2.17 ++eclock;
274     }
275 greg 2.16 sum += funvalue(funame, 6, ssvec);
276 greg 2.15 }
277 greg 2.42 bsdf = sum * (1./NSSAMP);
278 greg 2.15 }
279 greg 2.28 #endif
280 greg 2.15 }
281 greg 2.1 if (pctcull >= 0)
282 greg 2.37 putbinary(&bsdf, sizeof(bsdf), 1, ofp);
283 greg 2.1 else
284 greg 2.34 fprintf(ofp, "\t%.3e\n", bsdf);
285    
286     if (rbf_colorimetry == RBCtristimulus) {
287     if (pctcull >= 0) {
288 greg 2.37 putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]);
289     putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]);
290 greg 2.34 } else {
291     fprintf(uvfp[0], "\t%.3e\n", uv[0]);
292     fprintf(uvfp[1], "\t%.3e\n", uv[1]);
293     }
294     }
295 greg 2.15 last_bsdf = bsdf;
296 greg 2.1 }
297 greg 2.15 }
298 greg 2.3 if (rbf != NULL)
299     free(rbf);
300 greg 2.42 prog_show((ix+1.)*(2.*sqfact));
301 greg 2.1 }
302 greg 2.35 prog_done();
303 greg 2.1 if (pctcull >= 0) { /* finish output */
304     if (pclose(ofp)) {
305 greg 2.34 fprintf(stderr, "%s: error running rttree_reduce on Y\n",
306     progname);
307     exit(1);
308     }
309     if (rbf_colorimetry == RBCtristimulus &&
310     (pclose(uvfp[0]) || pclose(uvfp[1]))) {
311     fprintf(stderr, "%s: error running rttree_reduce on uv\n",
312     progname);
313 greg 2.1 exit(1);
314     }
315     } else {
316     for (ix = sqres*sqres*sqres/2; ix--; )
317 greg 2.34 fputs("\t0\n", ofp);
318     fputs("}\n", ofp);
319     if (fclose(ofp)) {
320     fprintf(stderr, "%s: error writing Y file\n",
321     progname);
322     exit(1);
323     }
324     if (rbf_colorimetry == RBCtristimulus) {
325     for (ix = sqres*sqres*sqres/2; ix--; ) {
326     fputs("\t0\n", uvfp[0]);
327     fputs("\t0\n", uvfp[1]);
328     }
329     fputs("}\n", uvfp[0]);
330     fputs("}\n", uvfp[1]);
331     if (fclose(uvfp[0]) || fclose(uvfp[1])) {
332     fprintf(stderr, "%s: error writing uv file(s)\n",
333     progname);
334     exit(1);
335     }
336     }
337 greg 2.1 }
338     }
339    
340     /* Interpolate and output anisotropic BSDF data */
341     static void
342 greg 2.11 eval_anisotropic(char *funame)
343 greg 2.1 {
344     const int sqres = 1<<samp_order;
345 greg 2.42 const double sqfact = 1./(double)sqres;
346 greg 2.34 FILE *ofp, *uvfp[2];
347 greg 2.17 int assignD = 0;
348 greg 2.1 char cmd[128];
349     int ix, iy, ox, oy;
350 greg 2.11 double iovec[6];
351 greg 2.34 float bsdf, uv[2];
352 greg 2.15
353 greg 2.11 if (pctcull >= 0) {
354 greg 2.35 const char *avgopt = (input_orient>0 ^ output_orient>0)
355 greg 2.41 ? "" : recip;
356 greg 2.34 sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s",
357 greg 2.35 avgopt, pctcull, samp_order,
358     create_component_file(0));
359 greg 2.1 ofp = popen(cmd, "w");
360     if (ofp == NULL) {
361     fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n",
362     progname);
363     exit(1);
364     }
365 greg 2.25 SET_FILE_BINARY(ofp);
366     #ifdef getc_unlocked /* avoid lock/unlock overhead */
367     flockfile(ofp);
368     #endif
369 greg 2.34 if (rbf_colorimetry == RBCtristimulus) {
370     double uvcull = 100. - (100.-pctcull)*.25;
371     sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s",
372 greg 2.35 avgopt, uvcull, samp_order,
373     create_component_file(1));
374 greg 2.34 uvfp[0] = popen(cmd, "w");
375     sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s",
376 greg 2.35 avgopt, uvcull, samp_order,
377     create_component_file(2));
378 greg 2.34 uvfp[1] = popen(cmd, "w");
379     if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) {
380     fprintf(stderr, "%s: cannot open pipes to uv output\n",
381     progname);
382     exit(1);
383     }
384     SET_FILE_BINARY(uvfp[0]); SET_FILE_BINARY(uvfp[1]);
385     #ifdef getc_unlocked
386     flockfile(uvfp[0]); flockfile(uvfp[1]);
387     #endif
388     }
389     } else {
390     ofp = fopen(create_component_file(0), "w");
391     if (ofp == NULL) {
392     fprintf(stderr, "%s: cannot create Y output file\n",
393     progname);
394     exit(1);
395     }
396     fputs("{\n", ofp);
397     if (rbf_colorimetry == RBCtristimulus) {
398     uvfp[0] = fopen(create_component_file(1), "w");
399     uvfp[1] = fopen(create_component_file(2), "w");
400     if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) {
401     fprintf(stderr, "%s: cannot create uv output file(s)\n",
402     progname);
403     exit(1);
404     }
405     fputs("{\n", uvfp[0]);
406     fputs("{\n", uvfp[1]);
407     }
408     }
409 greg 2.35 if (funame != NULL) /* need to assign Dx, Dy, Dz? */
410 greg 2.17 assignD = (fundefined(funame) < 6);
411 greg 2.1 /* run through directions */
412     for (ix = 0; ix < sqres; ix++)
413     for (iy = 0; iy < sqres; iy++) {
414 greg 2.11 RBFNODE *rbf = NULL; /* Klems reversal */
415 greg 2.42 SDsquare2disk(iovec, 1.-(ix+.5)*sqfact, 1.-(iy+.5)*sqfact);
416 greg 2.11 iovec[2] = input_orient *
417     sqrt(1. - iovec[0]*iovec[0] - iovec[1]*iovec[1]);
418     if (funame == NULL)
419 greg 2.18 rbf = advect_rbf(iovec, lobe_lim);
420 greg 2.15 for (ox = 0; ox < sqres; ox++) {
421     float last_bsdf = -1;
422 greg 2.1 for (oy = 0; oy < sqres; oy++) {
423 greg 2.42 SDsquare2disk(iovec+3, (ox+.5)*sqfact, (oy+.5)*sqfact);
424 greg 2.11 iovec[5] = output_orient *
425     sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]);
426 greg 2.34 if (funame == NULL) {
427     SDValue sdv;
428     eval_rbfcol(&sdv, rbf, iovec+3);
429     bsdf = sdv.cieY;
430 greg 2.42 #if (NSSAMP > 0)
431     if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) {
432     int ssi;
433     double ssa[2], sum = 0, usum = 0, vsum = 0;
434     /* super-sample voxel */
435     for (ssi = NSSAMP; ssi--; ) {
436     SDmultiSamp(ssa, 2, (ssi+frandom()) *
437     (1./NSSAMP));
438     SDsquare2disk(iovec+3, (ox+ssa[0])*sqfact,
439     (oy+ssa[1])*sqfact);
440     iovec[5] = output_orient *
441     sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]);
442     eval_rbfcol(&sdv, rbf, iovec+3);
443     sum += sdv.cieY;
444     if (rbf_colorimetry == RBCtristimulus) {
445     sdv.cieY /=
446     -2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.;
447     usum += 4.*sdv.spec.cx * sdv.cieY;
448     vsum += 9.*sdv.spec.cy * sdv.cieY;
449     }
450     }
451     bsdf = sum * (1./NSSAMP);
452     if (rbf_colorimetry == RBCtristimulus) {
453     uv[0] = usum / (sum+FTINY);
454     uv[1] = vsum / (sum+FTINY);
455     }
456     } else
457     #endif
458 greg 2.34 if (rbf_colorimetry == RBCtristimulus) {
459     uv[0] = uv[1] = 1. /
460     (-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.);
461     uv[0] *= 4.*sdv.spec.cx;
462     uv[1] *= 9.*sdv.spec.cy;
463     }
464     } else {
465 greg 2.17 if (assignD) {
466     varset("Dx", '=', -iovec[3]);
467     varset("Dy", '=', -iovec[4]);
468     varset("Dz", '=', -iovec[5]);
469     ++eclock;
470     }
471 greg 2.15 bsdf = funvalue(funame, 6, iovec);
472 greg 2.28 #if (NSSAMP > 0)
473 greg 2.15 if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) {
474 greg 2.28 int ssi;
475     double ssa[4], ssvec[6], sum = 0;
476     /* super-sample voxel */
477     for (ssi = NSSAMP; ssi--; ) {
478     SDmultiSamp(ssa, 4, (ssi+frandom()) *
479     (1./NSSAMP));
480 greg 2.42 SDsquare2disk(ssvec, 1.-(ix+ssa[0])*sqfact,
481     1.-(iy+ssa[1])*sqfact);
482 greg 2.28 ssvec[2] = input_orient *
483 greg 2.15 sqrt(1. - ssvec[0]*ssvec[0] -
484     ssvec[1]*ssvec[1]);
485 greg 2.42 SDsquare2disk(ssvec+3, (ox+ssa[2])*sqfact,
486     (oy+ssa[3])*sqfact);
487 greg 2.15 ssvec[5] = output_orient *
488     sqrt(1. - ssvec[3]*ssvec[3] -
489     ssvec[4]*ssvec[4]);
490 greg 2.17 if (assignD) {
491 greg 2.28 varset("Dx", '=', -ssvec[3]);
492     varset("Dy", '=', -ssvec[4]);
493     varset("Dz", '=', -ssvec[5]);
494 greg 2.17 ++eclock;
495     }
496 greg 2.16 sum += funvalue(funame, 6, ssvec);
497 greg 2.15 }
498 greg 2.42 bsdf = sum * (1./NSSAMP);
499 greg 2.15 }
500 greg 2.28 #endif
501 greg 2.15 }
502 greg 2.1 if (pctcull >= 0)
503 greg 2.37 putbinary(&bsdf, sizeof(bsdf), 1, ofp);
504 greg 2.1 else
505 greg 2.34 fprintf(ofp, "\t%.3e\n", bsdf);
506    
507     if (rbf_colorimetry == RBCtristimulus) {
508     if (pctcull >= 0) {
509 greg 2.37 putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]);
510     putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]);
511 greg 2.34 } else {
512     fprintf(uvfp[0], "\t%.3e\n", uv[0]);
513     fprintf(uvfp[1], "\t%.3e\n", uv[1]);
514     }
515     }
516 greg 2.15 last_bsdf = bsdf;
517 greg 2.1 }
518 greg 2.15 }
519 greg 2.3 if (rbf != NULL)
520     free(rbf);
521 greg 2.26 prog_show((ix*sqres+iy+1.)/(sqres*sqres));
522 greg 2.1 }
523 greg 2.35 prog_done();
524 greg 2.1 if (pctcull >= 0) { /* finish output */
525     if (pclose(ofp)) {
526 greg 2.34 fprintf(stderr, "%s: error running rttree_reduce on Y\n",
527     progname);
528     exit(1);
529     }
530     if (rbf_colorimetry == RBCtristimulus &&
531     (pclose(uvfp[0]) || pclose(uvfp[1]))) {
532     fprintf(stderr, "%s: error running rttree_reduce on uv\n",
533     progname);
534 greg 2.1 exit(1);
535     }
536 greg 2.34 } else {
537     fputs("}\n", ofp);
538     if (fclose(ofp)) {
539     fprintf(stderr, "%s: error writing Y file\n",
540     progname);
541     exit(1);
542     }
543     if (rbf_colorimetry == RBCtristimulus) {
544     fputs("}\n", uvfp[0]);
545     fputs("}\n", uvfp[1]);
546     if (fclose(uvfp[0]) || fclose(uvfp[1])) {
547     fprintf(stderr, "%s: error writing uv file(s)\n",
548     progname);
549     exit(1);
550     }
551     }
552     }
553 greg 2.5 }
554    
555 schorsch 2.36 #if defined(_WIN32) || defined(_WIN64)
556 greg 2.34 /* Execute wrapBSDF command (may never return) */
557     static int
558     wrap_up(void)
559     {
560     char cmd[8192];
561    
562     if (bsdf_manuf[0]) {
563     add_wbsdf("-f", 1);
564     strcpy(cmd, "m=");
565     strcpy(cmd+2, bsdf_manuf);
566     add_wbsdf(cmd, 0);
567     }
568     if (bsdf_name[0]) {
569     add_wbsdf("-f", 1);
570     strcpy(cmd, "n=");
571     strcpy(cmd+2, bsdf_name);
572     add_wbsdf(cmd, 0);
573     }
574     if (!convert_commandline(cmd, sizeof(cmd), wrapBSDF)) {
575     fputs(progname, stderr);
576     fputs(": command line too long in wrap_up()\n", stderr);
577     return(1);
578     }
579     return(system(cmd));
580     }
581     #else
582     /* Execute wrapBSDF command (may never return) */
583     static int
584     wrap_up(void)
585     {
586     char buf[256];
587     char *compath = getpath((char *)wrapBSDF[0], getenv("PATH"), X_OK);
588    
589     if (compath == NULL) {
590     fprintf(stderr, "%s: cannot locate %s\n", progname, wrapBSDF[0]);
591     return(1);
592     }
593     if (bsdf_manuf[0]) {
594     add_wbsdf("-f", 1);
595     strcpy(buf, "m=");
596     strcpy(buf+2, bsdf_manuf);
597     add_wbsdf(buf, 0);
598     }
599     if (bsdf_name[0]) {
600     add_wbsdf("-f", 1);
601     strcpy(buf, "n=");
602     strcpy(buf+2, bsdf_name);
603     add_wbsdf(buf, 0);
604     }
605     execv(compath, wrapBSDF); /* successful call never returns */
606     perror(compath);
607     return(1);
608     }
609     #endif
610    
611 greg 2.1 /* Read in BSDF and interpolate as tensor tree representation */
612     int
613     main(int argc, char *argv[])
614     {
615 greg 2.34 static char tfmt[2][4] = {"t4", "t3"};
616 greg 2.11 int dofwd = 0, dobwd = 1;
617 greg 2.34 char buf[2048];
618 greg 2.11 int i, na;
619 greg 2.1
620 greg 2.5 progname = argv[0];
621 greg 2.11 esupport |= E_VARIABLE|E_FUNCTION|E_RCONST;
622     esupport &= ~(E_INCHAN|E_OUTCHAN);
623     scompile("PI:3.14159265358979323846", NULL, 0);
624     biggerlib();
625 greg 2.41 for (i = 1; i < argc && (argv[i][0] == '-') | (argv[i][0] == '+'); i++)
626 greg 2.11 switch (argv[i][1]) { /* get options */
627     case 'e':
628     scompile(argv[++i], NULL, 0);
629     break;
630     case 'f':
631 greg 2.34 if (!argv[i][2]) {
632     if (strchr(argv[++i], '=') != NULL) {
633     add_wbsdf("-f", 1);
634     add_wbsdf(argv[i], 1);
635 greg 2.43 } else {
636     char *fpath = getpath(argv[i],
637     getrlibpath(), 0);
638     if (fpath == NULL) {
639     fprintf(stderr,
640     "%s: cannot find file '%s'\n",
641     argv[0], argv[i]);
642     return(1);
643     }
644     fcompile(fpath);
645     single_plane_incident = 0;
646     }
647 greg 2.34 } else
648 greg 2.11 dofwd = (argv[i][0] == '+');
649     break;
650 greg 2.41 case 'a':
651     recip = (argv[i][0] == '+') ? " -a" : "";
652     break;
653 greg 2.11 case 'b':
654     dobwd = (argv[i][0] == '+');
655     break;
656 greg 2.1 case 't':
657 greg 2.11 switch (argv[i][2]) {
658     case '3':
659 greg 2.13 single_plane_incident = 1;
660 greg 2.11 break;
661     case '4':
662 greg 2.13 single_plane_incident = 0;
663 greg 2.11 break;
664     case '\0':
665     pctcull = atof(argv[++i]);
666     break;
667     default:
668     goto userr;
669     }
670 greg 2.1 break;
671     case 'g':
672 greg 2.5 samp_order = atoi(argv[++i]);
673 greg 2.1 break;
674 greg 2.18 case 'l':
675     lobe_lim = atoi(argv[++i]);
676     break;
677 greg 2.26 case 'p':
678     do_prog = atoi(argv[i]+2);
679     break;
680 greg 2.34 case 'W':
681     add_wbsdf(argv[i], 1);
682     break;
683     case 'u':
684     case 'C':
685     add_wbsdf(argv[i], 1);
686     add_wbsdf(argv[++i], 1);
687     break;
688 greg 2.1 default:
689     goto userr;
690     }
691 greg 2.34 strcpy(buf, "File produced by: ");
692     if (convert_commandline(buf+18, sizeof(buf)-18, argv) != NULL) {
693     add_wbsdf("-C", 1); add_wbsdf(buf, 0);
694     }
695 greg 2.11 if (single_plane_incident >= 0) { /* function-based BSDF? */
696     void (*evf)(char *s) = single_plane_incident ?
697 greg 2.34 eval_isotropic : eval_anisotropic;
698 greg 2.17 if (i != argc-1 || fundefined(argv[i]) < 3) {
699 greg 2.12 fprintf(stderr,
700     "%s: need single function with 6 arguments: bsdf(ix,iy,iz,ox,oy,oz)\n",
701     progname);
702 greg 2.24 fprintf(stderr, "\tor 3 arguments using Dx,Dy,Dz: bsdf(ix,iy,iz)\n");
703 greg 2.11 goto userr;
704 greg 2.12 }
705 greg 2.17 ++eclock;
706 greg 2.34 add_wbsdf("-a", 1);
707     add_wbsdf(tfmt[single_plane_incident], 1);
708 greg 2.11 if (dofwd) {
709     input_orient = -1;
710     output_orient = -1;
711 greg 2.26 prog_start("Evaluating outside reflectance");
712     (*evf)(argv[i]);
713 greg 2.11 output_orient = 1;
714 greg 2.26 prog_start("Evaluating outside->inside transmission");
715     (*evf)(argv[i]);
716 greg 2.11 }
717     if (dobwd) {
718     input_orient = 1;
719     output_orient = 1;
720 greg 2.26 prog_start("Evaluating inside reflectance");
721     (*evf)(argv[i]);
722 greg 2.11 output_orient = -1;
723 greg 2.26 prog_start("Evaluating inside->outside transmission");
724     (*evf)(argv[i]);
725 greg 2.11 }
726 greg 2.34 return(wrap_up());
727 greg 2.11 }
728     if (i < argc) { /* open input files if given */
729 greg 2.12 int nbsdf = 0;
730 greg 2.11 for ( ; i < argc; i++) { /* interpolate each component */
731 greg 2.26 char pbuf[256];
732 greg 2.11 FILE *fpin = fopen(argv[i], "rb");
733     if (fpin == NULL) {
734     fprintf(stderr, "%s: cannot open BSDF interpolant '%s'\n",
735     progname, argv[i]);
736     return(1);
737     }
738     if (!load_bsdf_rep(fpin))
739     return(1);
740     fclose(fpin);
741 greg 2.26 sprintf(pbuf, "Interpolating component '%s'", argv[i]);
742     prog_start(pbuf);
743 greg 2.34 if (!nbsdf++) {
744     add_wbsdf("-a", 1);
745     add_wbsdf(tfmt[single_plane_incident], 1);
746     }
747 greg 2.11 if (single_plane_incident)
748     eval_isotropic(NULL);
749     else
750     eval_anisotropic(NULL);
751     }
752 greg 2.34 return(wrap_up());
753 greg 2.11 }
754     SET_FILE_BINARY(stdin); /* load from stdin */
755     if (!load_bsdf_rep(stdin))
756 greg 2.1 return(1);
757 greg 2.26 prog_start("Interpolating from standard input");
758 greg 2.34 add_wbsdf("-a", 1);
759     add_wbsdf(tfmt[single_plane_incident], 1);
760 greg 2.1 if (single_plane_incident) /* resample dist. */
761 greg 2.11 eval_isotropic(NULL);
762 greg 2.1 else
763 greg 2.11 eval_anisotropic(NULL);
764 greg 2.34
765     return(wrap_up());
766 greg 2.1 userr:
767     fprintf(stderr,
768 greg 2.41 "Usage: %s [{+|-}a][-g Nlog2][-t pctcull][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n",
769 greg 2.11 progname);
770     fprintf(stderr,
771 greg 2.41 " or: %s -t{3|4} [{+|-}a][-g Nlog2][-t pctcull][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n",
772 greg 2.1 progname);
773     return(1);
774     }