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root/radiance/ray/src/gen/xform.c
Revision: 2.5
Committed: Thu Jun 25 11:49:46 1992 UTC (31 years, 10 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.4: +8 -10 lines
Log Message:
made text() more flexible for proportional spacing

File Contents

# Content
1 /* Copyright (c) 1991 Regents of the University of California */
2
3 #ifndef lint
4 static char SCCSid[] = "$SunId$ LBL";
5 #endif
6
7 /*
8 * xform.c - program to transform object files.
9 * Transformations must preserve aspect ratio.
10 *
11 * 10/19/85
12 * 11/6/86 Finally added error checking!
13 */
14
15 #include "standard.h"
16
17 #include <ctype.h>
18
19 #include "object.h"
20
21 #include "otypes.h"
22
23 int xac; /* global xform argument count */
24 char **xav; /* global xform argument pointer */
25 int xfa; /* start of xf arguments */
26
27 XF tot; /* total transformation */
28 int reverse; /* boolean true if scene mirrored */
29
30 int invert = 0; /* boolean true to invert surfaces */
31
32 int expand = 0; /* boolean true to expand commands */
33
34 char *newmod = NULL; /* new modifier for surfaces */
35
36 char *idprefix = NULL; /* prefix for object identifiers */
37
38 #define ALIAS NUMOTYPE /* put alias at end of array */
39
40 #define NUMTYPES (NUMOTYPE+1) /* total number of object types */
41
42 FUN ofun[NUMTYPES] = INIT_OTYPE; /* default types and actions */
43
44 short tinvers[NUMOTYPE]; /* inverse types for surfaces */
45
46 extern char *malloc(), *fgetword();
47
48 #define progname (xav[0])
49
50
51 main(argc, argv) /* get transform options and transform file */
52 int argc;
53 char *argv[];
54 {
55 FILE *fopen();
56 FILE *fp;
57 int a;
58 /* check for array */
59 for (a = 1; a < argc; a++)
60 if (!strcmp(argv[a], "-a"))
61 return(doarray(argc, argv, a));
62
63 initotypes();
64
65 for (a = 1; a < argc; a++) {
66 if (argv[a][0] == '-')
67 switch (argv[a][1]) {
68 case 'm':
69 if (argv[a][2] || a+1 >= argc)
70 break;
71 newmod = argv[++a];
72 continue;
73 case 'n':
74 if (argv[a][2] || a+1 >= argc)
75 break;
76 idprefix = argv[++a];
77 continue;
78 case 'e':
79 if (argv[a][2])
80 break;
81 expand = 1;
82 continue;
83 case 'I':
84 if (argv[a][2])
85 break;
86 invert = 1;
87 continue;
88 }
89 break;
90 }
91
92 xav = argv;
93 xfa = a;
94
95 a += xf(&tot, argc-a, argv+a);
96
97 if (reverse = tot.sca < 0.0)
98 tot.sca = -tot.sca;
99 if (invert)
100 reverse = !reverse;
101
102 if (a < argc && argv[a][0] == '-') {
103 fprintf(stderr, "%s: command line error at '%s'\n",
104 argv[0], argv[a]);
105 exit(1);
106 }
107
108 xac = a;
109 /* simple header */
110 putchar('#');
111 for (a = 0; a < xac; a++)
112 printf(" %s", xav[a]);
113 putchar('\n');
114 /* transform input */
115 if (xac == argc)
116 xform("standard input", stdin);
117 else
118 for (a = xac; a < argc; a++) {
119 if ((fp = fopen(argv[a], "r")) == NULL) {
120 fprintf(stderr, "%s: cannot open \"%s\"\n",
121 progname, argv[a]);
122 exit(1);
123 }
124 xform(argv[a], fp);
125 fclose(fp);
126 }
127
128 return(0);
129 }
130
131
132 doarray(ac, av, ai) /* make array */
133 char **av;
134 int ac, ai;
135 {
136 char *newav[256], **avp;
137 char newid[128], repts[32];
138 char *oldid = NULL;
139 int i, err;
140
141 avp = newav+2;
142 avp[0] = av[0];
143 for (i = 1; i < ac; i++)
144 if (!strcmp(av[i-1], "-n")) {
145 oldid = av[i];
146 avp[i] = newid;
147 } else
148 avp[i] = av[i];
149 avp[ai] = "-i";
150 avp[ai+1] = repts;
151 avp[i] = NULL;
152 if (oldid == NULL) {
153 newav[0] = av[0];
154 newav[1] = "-n";
155 newav[2] = newid;
156 avp = newav;
157 ac += 2;
158 }
159 err = 0;
160 for (i = 0; i < atoi(av[ai+1]); i++) {
161 if (oldid == NULL)
162 sprintf(newid, "a%d", i);
163 else
164 sprintf(newid, "%s.%d", oldid, i);
165 sprintf(repts, "%d", i);
166 err |= main(ac, avp);
167 }
168 return(err);
169 }
170
171
172 xform(name, fin) /* transform stream by tot.xfm */
173 char *name;
174 register FILE *fin;
175 {
176 register int c;
177
178 while ((c = getc(fin)) != EOF) {
179 if (isspace(c)) /* blank */
180 continue;
181 if (c == '#') { /* comment */
182 putchar(c);
183 do {
184 if ((c = getc(fin)) == EOF)
185 return;
186 putchar(c);
187 } while (c != '\n');
188 } else if (c == '!') { /* command */
189 ungetc(c, fin);
190 xfcomm(name, fin);
191 } else { /* object */
192 ungetc(c, fin);
193 xfobject(name, fin);
194 }
195 }
196 }
197
198
199 xfcomm(fname, fin) /* transform a command */
200 FILE *fin;
201 {
202 FILE *popen();
203 char *fgetline();
204 FILE *pin;
205 char buf[512];
206 int i;
207
208 fgetline(buf, sizeof(buf), fin);
209 if (expand) {
210 if ((pin = popen(buf+1, "r")) == NULL) {
211 fprintf(stderr, "%s: (%s): cannot execute \"%s\"\n",
212 progname, fname, buf);
213 exit(1);
214 }
215 xform(buf, pin);
216 pclose(pin);
217 } else {
218 printf("\n%s", buf);
219 if (xac > 1) {
220 printf(" | %s -e", xav[0]);
221 for (i = 1; i < xac; i++)
222 printf(" %s", xav[i]);
223 }
224 putchar('\n');
225 }
226 }
227
228
229 xfobject(fname, fin) /* transform an object */
230 char *fname;
231 FILE *fin;
232 {
233 extern char *strcpy();
234 char typ[16], nam[MAXSTR];
235 int fn;
236 /* modifier and type */
237 strcpy(typ, "EOF");
238 fgetword(nam, sizeof(nam), fin);
239 fgetword(typ, sizeof(typ), fin);
240 if ((fn = otype(typ)) < 0) {
241 fprintf(stderr, "%s: (%s): unknown object type \"%s\"\n",
242 progname, fname, typ);
243 exit(1);
244 }
245 if (ismodifier(fn))
246 printf("\n%s %s ", nam, typ);
247 else
248 printf("\n%s %s ", newmod != NULL ? newmod : nam,
249 invert ? ofun[tinvers[fn]].funame : typ);
250 /* object name */
251 fgetword(nam, sizeof(nam), fin);
252 if (idprefix == NULL || ismodifier(fn))
253 printf("%s\n", nam);
254 else
255 printf("%s.%s\n", idprefix, nam);
256 /* transform arguments */
257 if ((*ofun[fn].funp)(fin) < 0) {
258 fprintf(stderr, "%s: (%s): bad %s \"%s\"\n",
259 progname, fname, ofun[fn].funame, nam);
260 exit(1);
261 }
262 }
263
264
265 o_default(fin) /* pass on arguments unchanged */
266 FILE *fin;
267 {
268 register int i;
269 FUNARGS fa;
270
271 if (readfargs(&fa, fin) != 1)
272 return(-1);
273 /* string arguments */
274 printf("%d", fa.nsargs);
275 for (i = 0; i < fa.nsargs; i++)
276 printf(" %s", fa.sarg[i]);
277 printf("\n");
278 #ifdef IARGS
279 /* integer arguments */
280 printf("%d", fa.niargs);
281 for (i = 0; i < fa.niargs; i++)
282 printf(" %d", fa.iarg[i]);
283 printf("\n");
284 #else
285 printf("0\n");
286 #endif
287 /* float arguments */
288 printf("%d", fa.nfargs);
289 for (i = 0; i < fa.nfargs; i++)
290 printf(" %18.12g", fa.farg[i]);
291 printf("\n");
292 freefargs(&fa);
293 return(0);
294 }
295
296
297 addxform(fin) /* add xf arguments to strings */
298 FILE *fin;
299 {
300 register int i;
301 int resetarr = 0;
302 FUNARGS fa;
303
304 if (readfargs(&fa, fin) != 1)
305 return(-1);
306 /* string arguments */
307 if (xac > xfa && strcmp(xav[xfa], "-i"))
308 resetarr = 2;
309 printf("%d", fa.nsargs + resetarr + xac-xfa);
310 for (i = 0; i < fa.nsargs; i++)
311 printf(" %s", fa.sarg[i]);
312 if (resetarr)
313 printf(" -i 1");
314 for (i = xfa; i < xac; i++) /* add xf arguments */
315 printf(" %s", xav[i]);
316 printf("\n");
317 #ifdef IARGS
318 /* integer arguments */
319 printf("%d", fa.niargs);
320 for (i = 0; i < fa.niargs; i++)
321 printf(" %d", fa.iarg[i]);
322 printf("\n");
323 #else
324 printf("0\n");
325 #endif
326 /* float arguments */
327 printf("%d", fa.nfargs);
328 for (i = 0; i < fa.nfargs; i++)
329 printf(" %18.12g", fa.farg[i]);
330 printf("\n");
331 freefargs(&fa);
332 return(0);
333 }
334
335
336 int
337 otype(ofname) /* get object function number from its name */
338 register char *ofname;
339 {
340 register int i;
341
342 for (i = 0; i < NUMTYPES; i++)
343 if (!strcmp(ofun[i].funame, ofname))
344 return(i);
345
346 return(-1); /* not found */
347 }
348
349
350 alias(fin) /* transfer alias */
351 FILE *fin;
352 {
353 char aliasnm[MAXSTR];
354
355 if (fgetword(aliasnm, MAXSTR, fin) == NULL)
356 return(-1);
357 printf("\t%s\n", aliasnm);
358 return(0);
359 }
360
361
362 m_glow(fin) /* transform arguments for proximity light */
363 FILE *fin;
364 {
365 FUNARGS fa;
366
367 if (readfargs(&fa, fin) != 1)
368 return(-1);
369 if (fa.nsargs != 0 || fa.nfargs != 4)
370 return(-1);
371 printf("0\n0\n4");
372 printf(" %18.12g %18.12g %18.12g",
373 fa.farg[0], fa.farg[1], fa.farg[2]);
374 printf(" %18.12g\n", fa.farg[3] * tot.sca);
375 freefargs(&fa);
376 return(0);
377 }
378
379
380 m_spot(fin) /* transform arguments for spotlight */
381 FILE *fin;
382 {
383 FVECT v;
384 FUNARGS fa;
385
386 if (readfargs(&fa, fin) != 1)
387 return(-1);
388 if (fa.nsargs != 0 || fa.nfargs != 7)
389 return(-1);
390 printf("0\n0\n7");
391 printf(" %18.12g %18.12g %18.12g %18.12g\n",
392 fa.farg[0], fa.farg[1], fa.farg[2], fa.farg[3]);
393 multv3(v, fa.farg+4, tot.xfm);
394 printf("\t%18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
395 freefargs(&fa);
396 return(0);
397 }
398
399
400 m_dielectric(fin) /* transform arguments for dielectric */
401 FILE *fin;
402 {
403 double pow();
404 FUNARGS fa;
405
406 if (readfargs(&fa, fin) != 1)
407 return(-1);
408 if (fa.nsargs != 0 || fa.nfargs != 5)
409 return(-1);
410 printf("0\n0\n5");
411 printf(" %18.12g %18.12g %18.12g",
412 pow(fa.farg[0], 1.0/tot.sca),
413 pow(fa.farg[1], 1.0/tot.sca),
414 pow(fa.farg[2], 1.0/tot.sca));
415 printf(" %18.12g %18.12g\n", fa.farg[3], fa.farg[4]);
416 freefargs(&fa);
417 return(0);
418 }
419
420
421 m_interface(fin) /* transform arguments for interface */
422 FILE *fin;
423 {
424 double pow();
425 FUNARGS fa;
426
427 if (readfargs(&fa, fin) != 1)
428 return(-1);
429 if (fa.nsargs != 0 || fa.nfargs != 8)
430 return(-1);
431 printf("0\n0\n8\n");
432 printf("%18.12g %18.12g %18.12g",
433 pow(fa.farg[0], 1.0/tot.sca),
434 pow(fa.farg[1], 1.0/tot.sca),
435 pow(fa.farg[2], 1.0/tot.sca));
436 printf(" %18.12g\n", fa.farg[3]);
437 printf("%18.12g %18.12g %18.12g",
438 pow(fa.farg[4], 1.0/tot.sca),
439 pow(fa.farg[5], 1.0/tot.sca),
440 pow(fa.farg[6], 1.0/tot.sca));
441 printf(" %18.12g\n", fa.farg[7]);
442 freefargs(&fa);
443 return(0);
444 }
445
446
447 text(fin) /* transform text arguments */
448 FILE *fin;
449 {
450 int i;
451 FVECT v;
452 FUNARGS fa;
453
454 if (readfargs(&fa, fin) != 1)
455 return(-1);
456 if (fa.nfargs < 9)
457 return(-1);
458 /* string arguments */
459 printf("%d", fa.nsargs);
460 for (i = 0; i < fa.nsargs; i++)
461 printf(" %s", fa.sarg[i]);
462 printf("\n0\n%d\n", fa.nfargs);
463 /* anchor point */
464 multp3(v, fa.farg, tot.xfm);
465 printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
466 /* right vector */
467 multv3(v, fa.farg+3, tot.xfm);
468 printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
469 /* down vector */
470 multv3(v, fa.farg+6, tot.xfm);
471 printf(" %18.12g %18.12g %18.12g", v[0], v[1], v[2]);
472 /* remaining arguments */
473 for (i = 9; i < fa.nfargs; i++) {
474 if (i%3 == 0)
475 putchar('\n');
476 printf(" %18.12g", fa.farg[i]);
477 }
478 putchar('\n');
479 freefargs(&fa);
480 return(0);
481 }
482
483
484 o_source(fin) /* transform source arguments */
485 FILE *fin;
486 {
487 FVECT dv;
488 FUNARGS fa;
489
490 if (readfargs(&fa, fin) != 1)
491 return(-1);
492 if (fa.nsargs != 0 || fa.nfargs != 4)
493 return(-1);
494 /* transform direction vector */
495 multv3(dv, fa.farg, tot.xfm);
496 /* output */
497 printf("0\n0\n4");
498 printf(" %18.12g %18.12g %18.12g %18.12g\n",
499 dv[0], dv[1], dv[2], fa.farg[3]);
500 freefargs(&fa);
501 return(0);
502 }
503
504
505 o_sphere(fin) /* transform sphere arguments */
506 FILE *fin;
507 {
508 FVECT cent;
509 double rad;
510 FUNARGS fa;
511
512 if (readfargs(&fa, fin) != 1)
513 return(-1);
514 if (fa.nsargs != 0 || fa.nfargs != 4)
515 return(-1);
516
517 multp3(cent, fa.farg, tot.xfm); /* transform center */
518
519 rad = fa.farg[3] * tot.sca; /* scale radius */
520
521 printf("0\n0\n4");
522 printf(" %18.12g %18.12g %18.12g %18.12g\n",
523 cent[0], cent[1], cent[2], rad);
524 freefargs(&fa);
525 return(0);
526 }
527
528
529 o_face(fin) /* transform face arguments */
530 FILE *fin;
531 {
532 FVECT p;
533 register int i;
534 FUNARGS fa;
535
536 if (readfargs(&fa, fin) != 1)
537 return(-1);
538 if (fa.nsargs != 0 || fa.nfargs % 3)
539 return(-1);
540
541 printf("0\n0\n%d\n", fa.nfargs);
542
543 for (i = 0; i < fa.nfargs; i += 3) {
544 if (reverse)
545 multp3(p, fa.farg+(fa.nfargs-i-3), tot.xfm);
546 else
547 multp3(p, fa.farg+i, tot.xfm);
548 printf(" %18.12g %18.12g %18.12g\n", p[0], p[1], p[2]);
549 }
550 freefargs(&fa);
551 return(0);
552 }
553
554
555 o_cone(fin) /* transform cone and cup arguments */
556 FILE *fin;
557 {
558 FVECT p0, p1;
559 double r0, r1;
560 FUNARGS fa;
561
562 if (readfargs(&fa, fin) != 1)
563 return(-1);
564 if (fa.nsargs != 0 || fa.nfargs != 8)
565 return(-1);
566
567 printf("0\n0\n8\n");
568
569 multp3(p0, fa.farg, tot.xfm);
570 multp3(p1, fa.farg+3, tot.xfm);
571 r0 = fa.farg[6] * tot.sca;
572 r1 = fa.farg[7] * tot.sca;
573 printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
574 printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
575 printf(" %18.12g %18.12g\n", r0, r1);
576
577 freefargs(&fa);
578 return(0);
579 }
580
581
582 o_cylinder(fin) /* transform cylinder and tube arguments */
583 FILE *fin;
584 {
585 FVECT p0, p1;
586 double rad;
587 FUNARGS fa;
588
589 if (readfargs(&fa, fin) != 1)
590 return(-1);
591 if (fa.nsargs != 0 || fa.nfargs != 7)
592 return(-1);
593
594 printf("0\n0\n7\n");
595
596 multp3(p0, fa.farg, tot.xfm);
597 multp3(p1, fa.farg+3, tot.xfm);
598 rad = fa.farg[6] * tot.sca;
599 printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
600 printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
601 printf(" %18.12g\n", rad);
602 freefargs(&fa);
603 return(0);
604 }
605
606
607 o_ring(fin) /* transform ring arguments */
608 FILE *fin;
609 {
610 FVECT p0, pd;
611 double r0, r1;
612 FUNARGS fa;
613
614 if (readfargs(&fa, fin) != 1)
615 return(-1);
616 if (fa.nsargs != 0 || fa.nfargs != 8)
617 return(-1);
618
619 printf("0\n0\n8\n");
620
621 multp3(p0, fa.farg, tot.xfm);
622 multv3(pd, fa.farg+3, tot.xfm);
623 if (invert) {
624 pd[0] = -pd[0];
625 pd[1] = -pd[1];
626 pd[2] = -pd[2];
627 }
628 r0 = fa.farg[6] * tot.sca;
629 r1 = fa.farg[7] * tot.sca;
630 printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
631 printf(" %18.12g %18.12g %18.12g\n", pd[0], pd[1], pd[2]);
632 printf(" %18.12g %18.12g\n", r0, r1);
633 freefargs(&fa);
634 return(0);
635 }
636
637
638 initotypes() /* initialize ofun[] array */
639 {
640 extern int o_source();
641 extern int o_sphere();
642 extern int o_face();
643 extern int o_cone();
644 extern int o_cylinder();
645 extern int o_ring();
646 extern int m_glow();
647 extern int m_spot();
648 extern int m_dielectric();
649 extern int m_interface();
650 extern int text();
651 extern int alias();
652 extern int passargs();
653 extern int addxform();
654 register int i;
655
656 if (ofun[OBJ_SOURCE].funp == o_source)
657 return; /* done already */
658 /* alias is additional */
659 ofun[ALIAS].funame = ALIASID;
660 ofun[ALIAS].flags = 0;
661 /* functions get new transform */
662 for (i = 0; i < NUMTYPES; i++)
663 if (hasfunc(i))
664 ofun[i].funp = addxform;
665 /* special cases */
666 ofun[OBJ_SOURCE].funp = o_source;
667 ofun[OBJ_SPHERE].funp =
668 ofun[OBJ_BUBBLE].funp = o_sphere;
669 ofun[OBJ_FACE].funp = o_face;
670 ofun[OBJ_CONE].funp =
671 ofun[OBJ_CUP].funp = o_cone;
672 ofun[OBJ_CYLINDER].funp =
673 ofun[OBJ_TUBE].funp = o_cylinder;
674 ofun[OBJ_RING].funp = o_ring;
675 ofun[OBJ_INSTANCE].funp = addxform;
676 ofun[MAT_GLOW].funp = m_glow;
677 ofun[MAT_SPOT].funp = m_spot;
678 ofun[MAT_DIELECTRIC].funp = m_dielectric;
679 ofun[MAT_INTERFACE].funp = m_interface;
680 ofun[PAT_CTEXT].funp =
681 ofun[PAT_BTEXT].funp =
682 ofun[MIX_TEXT].funp = text;
683 ofun[ALIAS].funp = alias;
684 /* surface inverses */
685 tinvers[OBJ_SOURCE] = OBJ_SOURCE;
686 tinvers[OBJ_CONE] = OBJ_CUP;
687 tinvers[OBJ_CUP] = OBJ_CONE;
688 tinvers[OBJ_SPHERE] = OBJ_BUBBLE;
689 tinvers[OBJ_BUBBLE] = OBJ_SPHERE;
690 tinvers[OBJ_RING] = OBJ_RING;
691 tinvers[OBJ_CYLINDER] = OBJ_TUBE;
692 tinvers[OBJ_TUBE] = OBJ_CYLINDER;
693 tinvers[OBJ_INSTANCE] = OBJ_INSTANCE; /* oh, well */
694 }