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root/radiance/ray/src/cv/ies2rad.c
Revision: 2.13
Committed: Wed Jun 12 19:13:42 1996 UTC (27 years, 10 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.12: +22 -12 lines
Log Message:
added -s option to send to stdout

File Contents

# Content
1 /* Copyright (c) 1996 Regents of the University of California */
2
3 #ifndef lint
4 static char SCCSid[] = "$SunId$ LBL";
5 #endif
6
7 /*
8 * Convert IES luminaire data to Radiance description
9 *
10 * 07Apr90 Greg Ward
11 */
12
13 #include <stdio.h>
14 #include <math.h>
15 #include <ctype.h>
16 #include "color.h"
17 #include "paths.h"
18
19 #define PI 3.14159265358979323846
20 /* floating comparisons */
21 #define FTINY 1e-6
22 #define FEQ(a,b) ((a)<=(b)+FTINY&&(a)>=(b)-FTINY)
23 /* keywords */
24 #define MAGICID "IESNA"
25 #define LMAGICID 5
26 #define FIRSTREV 86
27 #define LASTREV 95
28
29 #define D86 0 /* keywords defined in LM-63-1986 */
30
31 #define K_TST 0
32 #define K_MAN 1
33 #define K_LMC 2
34 #define K_LMN 3
35 #define K_LPC 4
36 #define K_LMP 5
37 #define K_BAL 6
38 #define K_MTC 7
39 #define K_OTH 8
40 #define K_SCH 9
41 #define K_MOR 10
42 #define K_BLK 11
43 #define K_EBK 12
44
45 #define D91 ((1L<<13)-1) /* keywords defined in LM-63-1991 */
46
47 #define K_LMG 13
48
49 #define D95 ((1L<<14)-1) /* keywords defined in LM-63-1995 */
50
51 char k_kwd[][20] = {"TEST", "MANUFAC", "LUMCAT", "LUMINAIRE", "LAMPCAT",
52 "LAMP", "BALLAST", "MAINTCAT", "OTHER", "SEARCH",
53 "MORE", "BLOCK", "ENDBLOCK", "LUMINOUSGEOMETRY"};
54
55 long k_defined[] = {D86, D86, D86, D86, D86, D91, D91, D91, D91, D95};
56
57 int filerev = FIRSTREV;
58
59 #define keymatch(i,s) (k_defined[filerev-FIRSTREV]&1L<<(i) &&\
60 k_match(k_kwd[i],s))
61
62 #define checklamp(s) (!(k_defined[filerev-FIRSTREV]&(1<<K_LMP|1<<K_LPC)) ||\
63 keymatch(K_LMP,s) || keymatch(K_LPC,s))
64
65 /* tilt specs */
66 #define TLTSTR "TILT="
67 #define TLTSTRLEN 5
68 #define TLTNONE "NONE"
69 #define TLTINCL "INCLUDE"
70 #define TLT_VERT 1
71 #define TLT_H0 2
72 #define TLT_H90 3
73 /* photometric types */
74 #define PM_C 1
75 #define PM_B 2
76 /* unit types */
77 #define U_FEET 1
78 #define U_METERS 2
79 /* string lengths */
80 #define MAXLINE 132
81 #define MAXWORD 76
82 /* file types */
83 #define T_RAD ".rad"
84 #define T_DST ".dat"
85 #define T_TLT "%.dat"
86 #define T_OCT ".oct"
87 /* shape types */
88 #define RECT 1
89 #define DISK 2
90 #define SPHERE 3
91
92 #define MINDIM .001 /* minimum dimension (point source) */
93
94 #define F_M .3048 /* feet to meters */
95
96 #define abspath(p) (ISDIRSEP((p)[0]) || (p)[0] == '.')
97
98 static char default_name[] = "default";
99
100 char *libdir = NULL; /* library directory location */
101 char *prefdir = NULL; /* subdirectory */
102 char *lampdat = "lamp.tab"; /* lamp data file */
103
104 double meters2out = 1.0; /* conversion from meters to output */
105 char *lamptype = NULL; /* selected lamp type */
106 char *deflamp = NULL; /* default lamp type */
107 float defcolor[3] = {1.,1.,1.}; /* default lamp color */
108 float *lampcolor = defcolor; /* pointer to current lamp color */
109 double multiplier = 1.0; /* multiplier for all light sources */
110 char units[64] = "meters"; /* output units */
111 int out2stdout = 0; /* put out to stdout r.t. file */
112 int instantiate = 0; /* instantiate geometry */
113 double illumrad = 0.0; /* radius for illum sphere */
114
115 typedef struct {
116 int isillum; /* do as illum */
117 int type; /* RECT, DISK, SPHERE */
118 double mult; /* candela multiplier */
119 double w, l, h; /* width, length, height */
120 double area; /* max. projected area */
121 } SRCINFO; /* a source shape (units=meters) */
122
123 int gargc; /* global argc (minus filenames) */
124 char **gargv; /* global argv */
125
126 extern char *strcpy(), *strcat(), *stradd(), *tailtrunc(), *filetrunc(),
127 *filename(), *libname(), *fullname(), *malloc(),
128 *getword(), *atos();
129 extern float *matchlamp();
130
131 #define scnint(fp,ip) cvtint(ip,getword(fp))
132 #define scnflt(fp,rp) cvtflt(rp,getword(fp))
133 #define isint isflt /* IES allows real as integer */
134
135
136 main(argc, argv)
137 int argc;
138 char *argv[];
139 {
140 char *outfile = NULL;
141 int status;
142 char outname[MAXWORD];
143 double d1;
144 int i;
145
146 for (i = 1; i < argc && argv[i][0] == '-'; i++)
147 switch (argv[i][1]) {
148 case 'd': /* dimensions */
149 if (argv[i][2] == '\0')
150 goto badopt;
151 if (argv[i][3] == '\0')
152 d1 = 1.0;
153 else if (argv[i][3] == '/') {
154 d1 = atof(argv[i]+4);
155 if (d1 <= FTINY)
156 goto badopt;
157 } else
158 goto badopt;
159 switch (argv[i][2]) {
160 case 'c': /* centimeters */
161 if (FEQ(d1,10.))
162 strcpy(units,"millimeters");
163 else {
164 strcpy(units,"centimeters");
165 strcat(units,argv[i]+3);
166 }
167 meters2out = 100.*d1;
168 break;
169 case 'm': /* meters */
170 if (FEQ(d1,1000.))
171 strcpy(units,"millimeters");
172 else if (FEQ(d1,100.))
173 strcpy(units,"centimeters");
174 else {
175 strcpy(units,"meters");
176 strcat(units,argv[i]+3);
177 }
178 meters2out = d1;
179 break;
180 case 'i': /* inches */
181 strcpy(units,"inches");
182 strcat(units,argv[i]+3);
183 meters2out = d1*(12./F_M);
184 break;
185 case 'f': /* feet */
186 if (FEQ(d1,12.))
187 strcpy(units,"inches");
188 else {
189 strcpy(units,"feet");
190 strcat(units,argv[i]+3);
191 }
192 meters2out = d1/F_M;
193 break;
194 default:
195 goto badopt;
196 }
197 break;
198 case 'l': /* library directory */
199 libdir = argv[++i];
200 break;
201 case 'p': /* prefix subdirectory */
202 prefdir = argv[++i];
203 break;
204 case 'f': /* lamp data file */
205 lampdat = argv[++i];
206 break;
207 case 'o': /* output file root name */
208 outfile = argv[++i];
209 break;
210 case 's': /* output to stdout */
211 out2stdout = !out2stdout;
212 break;
213 case 'i': /* illum */
214 illumrad = atof(argv[++i]);
215 break;
216 case 'g': /* instatiate geometry? */
217 instantiate = !instantiate;
218 break;
219 case 't': /* override lamp type */
220 lamptype = argv[++i];
221 break;
222 case 'u': /* default lamp type */
223 deflamp = argv[++i];
224 break;
225 case 'c': /* default lamp color */
226 defcolor[0] = atof(argv[++i]);
227 defcolor[1] = atof(argv[++i]);
228 defcolor[2] = atof(argv[++i]);
229 break;
230 case 'm': /* multiplier */
231 multiplier = atof(argv[++i]);
232 break;
233 default:
234 badopt:
235 fprintf(stderr, "%s: bad option: %s\n",
236 argv[0], argv[i]);
237 exit(1);
238 }
239 gargc = i;
240 gargv = argv;
241 initlamps(); /* get lamp data (if needed) */
242 /* convert ies file(s) */
243 if (outfile != NULL) {
244 if (i == argc)
245 exit(ies2rad(NULL, outfile) == 0 ? 0 : 1);
246 else if (i == argc-1)
247 exit(ies2rad(argv[i], outfile) == 0 ? 0 : 1);
248 else
249 goto needsingle;
250 } else if (i >= argc) {
251 fprintf(stderr, "%s: missing output file specification\n",
252 argv[0]);
253 exit(1);
254 }
255 if (out2stdout && i != argc-1)
256 goto needsingle;
257 status = 0;
258 for ( ; i < argc; i++) {
259 tailtrunc(strcpy(outname,filename(argv[i])));
260 if (ies2rad(argv[i], outname) != 0)
261 status = 1;
262 }
263 exit(status);
264 needsingle:
265 fprintf(stderr, "%s: single input file required\n", argv[0]);
266 exit(1);
267 }
268
269
270 initlamps() /* set up lamps */
271 {
272 float *lcol;
273 int status;
274
275 if (lamptype != NULL && !strcmp(lamptype, default_name) &&
276 deflamp == NULL)
277 return; /* no need for data */
278 /* else load file */
279 if ((status = loadlamps(lampdat)) < 0)
280 exit(1);
281 if (status == 0) {
282 fprintf(stderr, "%s: warning - no lamp data\n", lampdat);
283 lamptype = default_name;
284 return;
285 }
286 if (deflamp != NULL) { /* match default type */
287 if ((lcol = matchlamp(deflamp)) == NULL)
288 fprintf(stderr,
289 "%s: warning - unknown default lamp type\n",
290 deflamp);
291 else
292 copycolor(defcolor, lcol);
293 }
294 if (lamptype != NULL) { /* match selected type */
295 if (strcmp(lamptype, default_name)) {
296 if ((lcol = matchlamp(lamptype)) == NULL) {
297 fprintf(stderr,
298 "%s: warning - unknown lamp type\n",
299 lamptype);
300 lamptype = default_name;
301 } else
302 copycolor(defcolor, lcol);
303 }
304 freelamps(); /* all done with data */
305 }
306 /* else keep lamp data */
307 }
308
309
310 char *
311 stradd(dst, src, sep) /* add a string at dst */
312 register char *dst, *src;
313 int sep;
314 {
315 if (src && *src) {
316 do
317 *dst++ = *src++;
318 while (*src);
319 if (sep && dst[-1] != sep)
320 *dst++ = sep;
321 }
322 *dst = '\0';
323 return(dst);
324 }
325
326
327 char *
328 fullname(path, fname, suffix) /* return full path name */
329 char *path, *fname, *suffix;
330 {
331 if (prefdir != NULL && abspath(prefdir))
332 libname(path, fname, suffix);
333 else if (abspath(fname))
334 strcpy(stradd(path, fname, 0), suffix);
335 else
336 libname(stradd(path, libdir, DIRSEP), fname, suffix);
337
338 return(path);
339 }
340
341
342 char *
343 libname(path, fname, suffix) /* return library relative name */
344 char *path, *fname, *suffix;
345 {
346 if (abspath(fname))
347 strcpy(stradd(path, fname, 0), suffix);
348 else
349 strcpy(stradd(stradd(path, prefdir, DIRSEP), fname, 0), suffix);
350
351 return(path);
352 }
353
354
355 char *
356 filename(path) /* get final component of pathname */
357 register char *path;
358 {
359 register char *cp;
360
361 for (cp = path; *path; path++)
362 if (ISDIRSEP(*path))
363 cp = path+1;
364 return(cp);
365 }
366
367
368 char *
369 filetrunc(path) /* truncate filename at end of path */
370 char *path;
371 {
372 register char *p1, *p2;
373
374 for (p1 = p2 = path; *p2; p2++)
375 if (ISDIRSEP(*p2))
376 p1 = p2;
377 if (p1 == path && ISDIRSEP(*p1))
378 p1++;
379 *p1 = '\0';
380 return(path);
381 }
382
383
384 char *
385 tailtrunc(name) /* truncate tail of filename */
386 char *name;
387 {
388 register char *p1, *p2;
389
390 for (p1 = filename(name); *p1 == '.'; p1++)
391 ;
392 p2 = NULL;
393 for ( ; *p1; p1++)
394 if (*p1 == '.')
395 p2 = p1;
396 if (p2 != NULL)
397 *p2 = '\0';
398 return(name);
399 }
400
401
402 blanktrunc(s) /* truncate spaces at end of line */
403 char *s;
404 {
405 register char *cp;
406
407 for (cp = s; *cp; cp++)
408 ;
409 while (cp-- > s && isspace(*cp))
410 ;
411 *++cp = '\0';
412 }
413
414
415 k_match(kwd, hdl) /* header line matches keyword? */
416 register char *kwd, *hdl;
417 {
418 if (!*hdl++ == '[')
419 return(0);
420 while (islower(*hdl) ? toupper(*hdl) == *kwd++ : *hdl == *kwd++)
421 if (!*hdl++)
422 return(0);
423 return(!*kwd & *hdl == ']');
424 }
425
426
427 char *
428 keyargs(hdl) /* return keyword arguments */
429 register char *hdl;
430 {
431 while (*hdl && *hdl++ != ']')
432 ;
433 while (isspace(*hdl))
434 hdl++;
435 return(hdl);
436 }
437
438
439 putheader(out) /* print header */
440 FILE *out;
441 {
442 register int i;
443
444 putc('#', out);
445 for (i = 0; i < gargc; i++) {
446 putc(' ', out);
447 fputs(gargv[i], out);
448 }
449 fputs("\n# Dimensions in ", out);
450 fputs(units, out);
451 putc('\n', out);
452 }
453
454
455 ies2rad(inpname, outname) /* convert IES file */
456 char *inpname, *outname;
457 {
458 SRCINFO srcinfo;
459 char buf[MAXLINE], tltid[MAXWORD];
460 char geomfile[128];
461 FILE *inpfp, *outfp;
462 int lineno = 0;
463
464 geomfile[0] = '\0';
465 srcinfo.isillum = 0;
466 if (inpname == NULL) {
467 inpname = "<stdin>";
468 inpfp = stdin;
469 } else if ((inpfp = fopen(inpname, "r")) == NULL) {
470 perror(inpname);
471 return(-1);
472 }
473 if (out2stdout)
474 outfp = stdout;
475 else if ((outfp = fopen(fullname(buf,outname,T_RAD), "w")) == NULL) {
476 perror(buf);
477 fclose(inpfp);
478 return(-1);
479 }
480 putheader(outfp);
481 if (lamptype == NULL)
482 lampcolor = NULL;
483 while (fgets(buf,sizeof(buf),inpfp) != NULL
484 && strncmp(buf,TLTSTR,TLTSTRLEN)) {
485 blanktrunc(buf);
486 if (!buf[0])
487 continue;
488 if (!lineno++ && !strncmp(buf, MAGICID, LMAGICID)) {
489 filerev = atoi(buf+LMAGICID);
490 if (filerev < FIRSTREV)
491 filerev = FIRSTREV;
492 else if (filerev > LASTREV)
493 filerev = LASTREV;
494 }
495 fputs("#<", outfp);
496 fputs(buf, outfp);
497 putc('\n', outfp);
498 if (lampcolor == NULL && checklamp(buf))
499 lampcolor = matchlamp( buf[0] == '[' ?
500 keyargs(buf) : buf );
501 if (keymatch(K_LMG, buf)) { /* geometry file */
502 strcpy(geomfile, inpname);
503 strcpy(filename(geomfile), keyargs(buf));
504 srcinfo.isillum = 1;
505 }
506 }
507 if (lampcolor == NULL) {
508 fprintf(stderr, "%s: warning - no lamp type\n", inpname);
509 fputs("# Unknown lamp type (used default)\n", outfp);
510 lampcolor = defcolor;
511 } else if (lamptype == NULL)
512 fprintf(outfp,"# CIE(x,y) = (%f,%f)\n# Depreciation = %.1f%%\n",
513 lampcolor[3], lampcolor[4], 100.*lampcolor[5]);
514 if (feof(inpfp)) {
515 fprintf(stderr, "%s: not in IES format\n", inpname);
516 goto readerr;
517 }
518 atos(tltid, MAXWORD, buf+TLTSTRLEN);
519 if (inpfp == stdin)
520 buf[0] = '\0';
521 else
522 filetrunc(strcpy(buf, inpname));
523 if (dotilt(inpfp, outfp, buf, tltid, outname, tltid) != 0) {
524 fprintf(stderr, "%s: bad tilt data\n", inpname);
525 goto readerr;
526 }
527 if (dosource(&srcinfo, inpfp, outfp, tltid, outname) != 0) {
528 fprintf(stderr, "%s: bad luminaire data\n", inpname);
529 goto readerr;
530 }
531 fclose(inpfp);
532 /* cvgeometry closes outfp */
533 if (cvgeometry(geomfile, &srcinfo, outname, outfp) != 0) {
534 fprintf(stderr, "%s: bad geometry file\n", geomfile);
535 return(-1);
536 }
537 return(0);
538 readerr:
539 fclose(inpfp);
540 fclose(outfp);
541 unlink(fullname(buf,outname,T_RAD));
542 return(-1);
543 }
544
545
546 dotilt(in, out, dir, tltspec, dfltname, tltid) /* convert tilt data */
547 FILE *in, *out;
548 char *dir, *tltspec, *dfltname, *tltid;
549 {
550 int nangles, tlt_type;
551 double minmax[2];
552 char buf[MAXPATH], tltname[MAXWORD];
553 FILE *datin, *datout;
554
555 if (!strcmp(tltspec, TLTNONE)) {
556 datin = NULL;
557 strcpy(tltid, "void");
558 } else if (!strcmp(tltspec, TLTINCL)) {
559 datin = in;
560 strcpy(tltname, dfltname);
561 } else {
562 if (ISDIRSEP(tltspec[0]))
563 strcpy(buf, tltspec);
564 else
565 strcpy(stradd(buf, dir, DIRSEP), tltspec);
566 if ((datin = fopen(buf, "r")) == NULL) {
567 perror(buf);
568 return(-1);
569 }
570 tailtrunc(strcpy(tltname,filename(tltspec)));
571 }
572 if (datin != NULL) {
573 if ((datout = fopen(fullname(buf,tltname,T_TLT),"w")) == NULL) {
574 perror(buf);
575 if (datin != in)
576 fclose(datin);
577 return(-1);
578 }
579 if (!scnint(datin,&tlt_type) || !scnint(datin,&nangles)
580 || cvdata(datin,datout,1,&nangles,1.,minmax) != 0) {
581 fprintf(stderr, "%s: data format error\n", tltspec);
582 fclose(datout);
583 if (datin != in)
584 fclose(datin);
585 unlink(fullname(buf,tltname,T_TLT));
586 return(-1);
587 }
588 fclose(datout);
589 if (datin != in)
590 fclose(datin);
591 strcat(strcpy(tltid, filename(tltname)), "_tilt");
592 fprintf(out, "\nvoid brightdata %s\n", tltid);
593 libname(buf,tltname,T_TLT);
594 switch (tlt_type) {
595 case TLT_VERT: /* vertical */
596 fprintf(out, "4 noop %s tilt.cal %s\n", buf,
597 minmax[1]>90.+FTINY ? "tilt_ang" : "tilt_ang2");
598 break;
599 case TLT_H0: /* horiz. in 0 deg. plane */
600 fprintf(out, "6 noop %s tilt.cal %s -rz 90\n", buf,
601 minmax[1]>90.+FTINY ? "tilt_xang" : "tilt_xang2");
602 break;
603 case TLT_H90:
604 fprintf(out, "4 noop %s tilt.cal %s\n", buf,
605 minmax[1]>90.+FTINY ? "tilt_xang" : "tilt_xang2");
606 break;
607 default:
608 fprintf(stderr,
609 "%s: illegal lamp to luminaire geometry (%d)\n",
610 tltspec, tlt_type);
611 return(-1);
612 }
613 fprintf(out, "0\n0\n");
614 }
615 return(0);
616 }
617
618
619 dosource(sinf, in, out, mod, name) /* create source and distribution */
620 SRCINFO *sinf;
621 FILE *in, *out;
622 char *mod, *name;
623 {
624 char buf[MAXPATH], id[MAXWORD];
625 FILE *datout;
626 double mult, bfactor, pfactor, width, length, height, wattage;
627 double bounds[2][2];
628 int nangles[2], pmtype, unitype;
629 double d1;
630
631 if (!isint(getword(in)) || !isflt(getword(in)) || !scnflt(in,&mult)
632 || !scnint(in,&nangles[0]) || !scnint(in,&nangles[1])
633 || !scnint(in,&pmtype) || !scnint(in,&unitype)
634 || !scnflt(in,&width) || !scnflt(in,&length)
635 || !scnflt(in,&height) || !scnflt(in,&bfactor)
636 || !scnflt(in,&pfactor) || !scnflt(in,&wattage)) {
637 fprintf(stderr, "dosource: bad lamp specification\n");
638 return(-1);
639 }
640 sinf->mult = multiplier*mult*bfactor*pfactor;
641 if (nangles[0] < 2 || nangles[1] < 1) {
642 fprintf(stderr, "dosource: too few measured angles\n");
643 return(-1);
644 }
645 if (unitype == U_FEET) {
646 width *= F_M;
647 length *= F_M;
648 height *= F_M;
649 }
650 if (makeshape(sinf, width, length, height) != 0) {
651 fprintf(stderr, "dosource: illegal source dimensions");
652 return(-1);
653 }
654 if ((datout = fopen(fullname(buf,name,T_DST), "w")) == NULL) {
655 perror(buf);
656 return(-1);
657 }
658 if (cvdata(in, datout, 2, nangles, 1./WHTEFFICACY, bounds) != 0) {
659 fprintf(stderr, "dosource: bad distribution data\n");
660 fclose(datout);
661 unlink(fullname(buf,name,T_DST));
662 return(-1);
663 }
664 fclose(datout);
665 fprintf(out, "# %g watt luminaire, lamp*ballast factor = %g\n",
666 wattage, bfactor*pfactor);
667 strcat(strcpy(id, filename(name)), "_dist");
668 fprintf(out, "\n%s brightdata %s\n", mod, id);
669 if (nangles[1] < 2)
670 fprintf(out, "4 ");
671 else if (pmtype == PM_B)
672 fprintf(out, "5 ");
673 else if (FEQ(bounds[1][0],90.) && FEQ(bounds[1][1],270.))
674 fprintf(out, "7 ");
675 else
676 fprintf(out, "5 ");
677 fprintf(out, "%s %s source.cal ",
678 sinf->type==SPHERE ? "corr" : "flatcorr",
679 libname(buf,name,T_DST));
680 if (pmtype == PM_B) {
681 if (FEQ(bounds[1][0],0.))
682 fprintf(out, "srcB_horiz2 ");
683 else
684 fprintf(out, "srcB_horiz ");
685 fprintf(out, "srcB_vert ");
686 } else {
687 if (nangles[1] >= 2) {
688 d1 = bounds[1][1] - bounds[1][0];
689 if (d1 <= 90.+FTINY)
690 fprintf(out, "src_phi4 ");
691 else if (d1 <= 180.+FTINY)
692 fprintf(out, "src_phi2 ");
693 else
694 fprintf(out, "src_phi ");
695 fprintf(out, "src_theta ");
696 if (FEQ(bounds[1][0],90.) && FEQ(bounds[1][1],270.))
697 fprintf(out, "-rz -90 ");
698 } else
699 fprintf(out, "src_theta ");
700 }
701 fprintf(out, "\n0\n1 %g\n", sinf->mult);
702 if (putsource(sinf, out, id, filename(name),
703 bounds[0][0]<90., bounds[0][1]>90.) != 0)
704 return(-1);
705 return(0);
706 }
707
708
709 putsource(shp, fp, mod, name, dolower, doupper) /* put out source */
710 SRCINFO *shp;
711 FILE *fp;
712 char *mod, *name;
713 int dolower, doupper;
714 {
715 char buf[MAXWORD];
716
717 fprintf(fp, "\n%s %s %s_light\n", mod,
718 shp->isillum ? "illum" : "light",
719 name);
720 fprintf(fp, "0\n0\n3 %g %g %g\n",
721 lampcolor[0]/shp->area,
722 lampcolor[1]/shp->area,
723 lampcolor[2]/shp->area);
724 if (doupper && dolower && shp->type != SPHERE && shp->h > MINDIM)
725 if (shp->isillum) {
726 fprintf(fp, "\nvoid illum %s_glow\n", name);
727 fprintf(fp, "0\n0\n3 0 0 0\n");
728 } else {
729 fprintf(fp, "\n%s glow %s_glow\n", mod, name);
730 fprintf(fp, "0\n0\n4 %g %g %g -1\n",
731 lampcolor[0]/shp->area,
732 lampcolor[1]/shp->area,
733 lampcolor[2]/shp->area);
734 }
735 switch (shp->type) {
736 case RECT:
737 strcat(strcpy(buf, name), "_light");
738 if (dolower)
739 putrectsrc(shp, fp, buf, name, 0);
740 if (doupper)
741 putrectsrc(shp, fp, buf, name, 1);
742 if (doupper && dolower && shp->h > MINDIM) {
743 strcat(strcpy(buf, name), "_glow");
744 putsides(shp, fp, buf, name);
745 }
746 break;
747 case DISK:
748 strcat(strcpy(buf, name), "_light");
749 if (dolower)
750 putdisksrc(shp, fp, buf, name, 0);
751 if (doupper)
752 putdisksrc(shp, fp, buf, name, 1);
753 if (doupper && dolower && shp->h > MINDIM) {
754 strcat(strcpy(buf, name), "_glow");
755 putcyl(shp, fp, buf, name);
756 }
757 break;
758 case SPHERE:
759 strcat(strcpy(buf, name), "_light");
760 putspheresrc(shp, fp, buf, name);
761 break;
762 }
763 return(0);
764 }
765
766
767 makeshape(shp, width, length, height) /* make source shape */
768 register SRCINFO *shp;
769 double width, length, height;
770 {
771 if (illumrad/meters2out >= MINDIM/2.) {
772 shp->isillum = 1;
773 shp->type = SPHERE;
774 shp->w = shp->l = shp->h = 2.*illumrad / meters2out;
775 } else if (width < MINDIM) {
776 width = -width;
777 if (width < MINDIM) {
778 shp->type = SPHERE;
779 shp->w = shp->l = shp->h = MINDIM;
780 } else if (height < .5*width) {
781 shp->type = DISK;
782 shp->w = shp->l = width;
783 if (height >= MINDIM)
784 shp->h = height;
785 else
786 shp->h = .5*MINDIM;
787 } else {
788 shp->type = SPHERE;
789 shp->w = shp->l = shp->h = width;
790 }
791 } else {
792 shp->type = RECT;
793 shp->w = width;
794 if (length >= MINDIM)
795 shp->l = length;
796 else
797 shp->l = MINDIM;
798 if (height >= MINDIM)
799 shp->h = height;
800 else
801 shp->h = .5*MINDIM;
802 }
803 switch (shp->type) {
804 case RECT:
805 shp->area = shp->w * shp->l;
806 break;
807 case DISK:
808 case SPHERE:
809 shp->area = PI/4. * shp->w * shp->w;
810 break;
811 }
812 return(0);
813 }
814
815
816 putrectsrc(shp, fp, mod, name, up) /* rectangular source */
817 SRCINFO *shp;
818 FILE *fp;
819 char *mod, *name;
820 int up;
821 {
822 if (up)
823 putrect(shp, fp, mod, name, ".u", 4, 5, 7, 6);
824 else
825 putrect(shp, fp, mod, name, ".d", 0, 2, 3, 1);
826 }
827
828
829 putsides(shp, fp, mod, name) /* put out sides of box */
830 register SRCINFO *shp;
831 FILE *fp;
832 char *mod, *name;
833 {
834 putrect(shp, fp, mod, name, ".1", 0, 1, 5, 4);
835 putrect(shp, fp, mod, name, ".2", 1, 3, 7, 5);
836 putrect(shp, fp, mod, name, ".3", 3, 2, 6, 7);
837 putrect(shp, fp, mod, name, ".4", 2, 0, 4, 6);
838 }
839
840
841 putrect(shp, fp, mod, name, suffix, a, b, c, d) /* put out a rectangle */
842 SRCINFO *shp;
843 FILE *fp;
844 char *mod, *name, *suffix;
845 int a, b, c, d;
846 {
847 fprintf(fp, "\n%s polygon %s%s\n0\n0\n12\n", mod, name, suffix);
848 putpoint(shp, fp, a);
849 putpoint(shp, fp, b);
850 putpoint(shp, fp, c);
851 putpoint(shp, fp, d);
852 }
853
854
855 putpoint(shp, fp, p) /* put out a point */
856 register SRCINFO *shp;
857 FILE *fp;
858 int p;
859 {
860 static double mult[2] = {-.5, .5};
861
862 fprintf(fp, "\t%g\t%g\t%g\n",
863 mult[p&1]*shp->l*meters2out,
864 mult[p>>1&1]*shp->w*meters2out,
865 mult[p>>2]*shp->h*meters2out);
866 }
867
868
869 putdisksrc(shp, fp, mod, name, up) /* put out a disk source */
870 register SRCINFO *shp;
871 FILE *fp;
872 char *mod, *name;
873 int up;
874 {
875 if (up) {
876 fprintf(fp, "\n%s ring %s.u\n", mod, name);
877 fprintf(fp, "0\n0\n8\n");
878 fprintf(fp, "\t0 0 %g\n", .5*shp->h*meters2out);
879 fprintf(fp, "\t0 0 1\n");
880 fprintf(fp, "\t0 %g\n", .5*shp->w*meters2out);
881 } else {
882 fprintf(fp, "\n%s ring %s.d\n", mod, name);
883 fprintf(fp, "0\n0\n8\n");
884 fprintf(fp, "\t0 0 %g\n", -.5*shp->h*meters2out);
885 fprintf(fp, "\t0 0 -1\n");
886 fprintf(fp, "\t0 %g\n", .5*shp->w*meters2out);
887 }
888 }
889
890
891 putcyl(shp, fp, mod, name) /* put out a cylinder */
892 register SRCINFO *shp;
893 FILE *fp;
894 char *mod, *name;
895 {
896 fprintf(fp, "\n%s cylinder %s.c\n", mod, name);
897 fprintf(fp, "0\n0\n7\n");
898 fprintf(fp, "\t0 0 %g\n", .5*shp->h*meters2out);
899 fprintf(fp, "\t0 0 %g\n", -.5*shp->h*meters2out);
900 fprintf(fp, "\t%g\n", .5*shp->w*meters2out);
901 }
902
903
904 putspheresrc(shp, fp, mod, name) /* put out a sphere source */
905 SRCINFO *shp;
906 FILE *fp;
907 char *mod, *name;
908 {
909 fprintf(fp, "\n%s sphere %s.s\n", mod, name);
910 fprintf(fp, "0\n0\n4 0 0 0 %g\n", .5*shp->w*meters2out);
911 }
912
913
914 cvdata(in, out, ndim, npts, mult, lim) /* convert data */
915 FILE *in, *out;
916 int ndim, npts[];
917 double mult, lim[][2];
918 {
919 double *pt[4];
920 register int i, j;
921 double val;
922 int total;
923
924 total = 1; j = 0;
925 for (i = 0; i < ndim; i++)
926 if (npts[i] > 1) {
927 total *= npts[i];
928 j++;
929 }
930 fprintf(out, "%d\n", j);
931 /* get coordinates */
932 for (i = 0; i < ndim; i++) {
933 pt[i] = (double *)malloc(npts[i]*sizeof(double));
934 for (j = 0; j < npts[i]; j++)
935 if (!scnflt(in, &pt[i][j]))
936 return(-1);
937 if (lim != NULL) {
938 lim[i][0] = pt[i][0];
939 lim[i][1] = pt[i][npts[i]-1];
940 }
941 }
942 /* write out in reverse */
943 for (i = ndim-1; i >= 0; i--) {
944 if (npts[i] > 1) {
945 for (j = 1; j < npts[i]-1; j++)
946 if (!FEQ(pt[i][j]-pt[i][j-1],
947 pt[i][j+1]-pt[i][j]))
948 break;
949 if (j == npts[i]-1)
950 fprintf(out, "%g %g %d\n", pt[i][0], pt[i][j],
951 npts[i]);
952 else {
953 fprintf(out, "0 0 %d", npts[i]);
954 for (j = 0; j < npts[i]; j++) {
955 if (j%4 == 0)
956 putc('\n', out);
957 fprintf(out, "\t%g", pt[i][j]);
958 }
959 putc('\n', out);
960 }
961 }
962 free((char *)pt[i]);
963 }
964 for (i = 0; i < total; i++) {
965 if (i%4 == 0)
966 putc('\n', out);
967 if (!scnflt(in, &val))
968 return(-1);
969 fprintf(out, "\t%g", val*mult);
970 }
971 putc('\n', out);
972 return(0);
973 }
974
975
976 char *
977 getword(fp) /* scan a word from fp */
978 register FILE *fp;
979 {
980 static char word[MAXWORD];
981 register char *cp;
982 register int c;
983
984 while (isspace(c=getc(fp)))
985 ;
986 for (cp = word; c != EOF && cp < word+MAXWORD-1;
987 *cp++ = c, c = getc(fp))
988 if (isspace(c) || c == ',') {
989 while (isspace(c))
990 c = getc(fp);
991 if (c != EOF & c != ',')
992 ungetc(c, fp);
993 *cp = '\0';
994 return(word);
995 }
996 *cp = '\0';
997 return(cp > word ? word : NULL);
998 }
999
1000
1001 cvtint(ip, word) /* convert a word to an integer */
1002 int *ip;
1003 char *word;
1004 {
1005 if (word == NULL || !isint(word))
1006 return(0);
1007 *ip = atoi(word);
1008 return(1);
1009 }
1010
1011
1012 cvtflt(rp, word) /* convert a word to a double */
1013 double *rp;
1014 char *word;
1015 {
1016 if (word == NULL || !isflt(word))
1017 return(0);
1018 *rp = atof(word);
1019 return(1);
1020 }
1021
1022
1023 cvgeometry(inpname, sinf, outname, outfp)
1024 char *inpname;
1025 register SRCINFO *sinf;
1026 char *outname;
1027 FILE *outfp; /* close output file upon return */
1028 {
1029 char buf[256];
1030 register char *cp;
1031
1032 if (inpname == NULL || !inpname[0]) { /* no geometry file */
1033 fclose(outfp);
1034 return(0);
1035 }
1036 putc('\n', outfp);
1037 strcpy(buf, "mgf2rad "); /* build mgf2rad command */
1038 cp = buf+8;
1039 if (!FEQ(sinf->mult, 1.0)) {
1040 sprintf(cp, "-m %f ", sinf->mult);
1041 cp += strlen(cp);
1042 }
1043 sprintf(cp, "-g %f %s ",
1044 sqrt(sinf->w*sinf->w + sinf->h*sinf->h + sinf->l*sinf->l),
1045 inpname);
1046 cp += strlen(cp);
1047 if (instantiate) { /* instantiate octree */
1048 strcpy(cp, "| oconv - > ");
1049 cp += 12;
1050 fullname(cp,outname,T_OCT);
1051 if (system(buf)) { /* create octree */
1052 fclose(outfp);
1053 return(-1);
1054 }
1055 fprintf(outfp, "void instance %s_inst\n", outname);
1056 if (!FEQ(meters2out, 1.0))
1057 fprintf(outfp, "3 %s -s %f\n",
1058 libname(buf,outname,T_OCT),
1059 meters2out);
1060 else
1061 fprintf(outfp, "1 %s\n", libname(buf,outname,T_OCT));
1062 fprintf(outfp, "0\n0\n");
1063 fclose(outfp);
1064 } else { /* else append to luminaire file */
1065 if (!FEQ(meters2out, 1.0)) { /* apply scalefactor */
1066 sprintf(cp, "| xform -s %f ", meters2out);
1067 cp += strlen(cp);
1068 }
1069 if (!out2stdout) {
1070 fclose(outfp);
1071 strcpy(cp, ">> "); /* append works for DOS? */
1072 cp += 3;
1073 fullname(cp,outname,T_RAD);
1074 }
1075 if (system(buf))
1076 return(-1);
1077 }
1078 return(0);
1079 }