9 |
|
*/ |
10 |
|
|
11 |
|
#include <stdio.h> |
12 |
+ |
#include <math.h> |
13 |
|
#include <string.h> |
14 |
|
#include "fvect.h" |
15 |
|
#include "object.h" |
16 |
|
#include "color.h" |
17 |
|
#include "lookup.h" |
18 |
|
|
19 |
+ |
#define PI 3.14159265358979323846 |
20 |
+ |
|
21 |
+ |
#define C_1SIDEDTHICK 0.005 |
22 |
+ |
|
23 |
|
int o_face(), o_cone(), o_sphere(), o_ring(), o_cylinder(); |
24 |
< |
int o_instance(), o_source(), o_illum(); |
25 |
< |
int o_plastic(), o_metal(), o_glass(), o_mirror(), o_trans(), o_light(); |
24 |
> |
int o_instance(), o_illum(); |
25 |
> |
int o_plastic(), o_metal(), o_glass(), o_dielectric(), |
26 |
> |
o_mirror(), o_trans(), o_light(); |
27 |
|
|
28 |
|
extern void free(); |
29 |
|
extern char *malloc(); |
32 |
|
|
33 |
|
LUTAB rdispatch = LU_SINIT(NULL,NULL); /* function dispatch table */ |
34 |
|
|
35 |
< |
char curmat[80]; /* current material */ |
35 |
> |
char curmat[80]; /* current material */ |
36 |
> |
char curobj[128] = "Untitled"; /* current object name */ |
37 |
|
|
38 |
< |
double unit_mult = 1.; /* units multiplier */ |
38 |
> |
double unit_mult = 1.; /* units multiplier */ |
39 |
|
|
40 |
+ |
#define hasmult (unit_mult < .999 || unit_mult > 1.001) |
41 |
|
|
42 |
+ |
/* |
43 |
+ |
* Stuff for tracking and reusing vertices: |
44 |
+ |
*/ |
45 |
+ |
|
46 |
+ |
char VKFMT[] = "%+16.9e %+16.9e %+16.9e"; |
47 |
+ |
#define VKLEN 64 |
48 |
+ |
|
49 |
+ |
#define mkvkey(k,v) sprintf(k, VKFMT, (v)[0], (v)[1], (v)[2]) |
50 |
+ |
|
51 |
+ |
#define NVERTS 256 |
52 |
+ |
|
53 |
+ |
long vclock; /* incremented at each vertex request */ |
54 |
+ |
|
55 |
+ |
struct vert { |
56 |
+ |
long lused; /* when last used (0 if unassigned) */ |
57 |
+ |
FVECT p; /* track point position only */ |
58 |
+ |
} vert[NVERTS]; /* our vertex cache */ |
59 |
+ |
|
60 |
+ |
LUTAB vertab = LU_SINIT(free,NULL); /* our vertex lookup table */ |
61 |
+ |
|
62 |
+ |
|
63 |
|
main(argc, argv) |
64 |
|
int argc; |
65 |
|
char **argv; |
86 |
|
goto unkopt; |
87 |
|
} |
88 |
|
break; |
89 |
+ |
default: |
90 |
+ |
goto unkopt; |
91 |
|
} |
92 |
|
init(); |
93 |
|
if (i >= argc) |
116 |
|
register int c; |
117 |
|
|
118 |
|
if (inp == NULL) { |
119 |
< |
inp = "the standard input"; |
119 |
> |
inp = "standard input"; |
120 |
|
fp = stdin; |
121 |
|
} else if (inp[0] == '!') { |
122 |
|
if ((fp = popen(inp+1, "r")) == NULL) { |
194 |
|
fprintf(stderr, "%s: bad %s \"%s\"\n", typ, id); |
195 |
|
exit(1); |
196 |
|
} |
197 |
< |
} else if (lu_find(&rmats, mod)->data != NULL) /* make alias */ |
198 |
< |
newmat(id, mod); |
197 |
> |
} else { /* unsupported */ |
198 |
> |
o_unsupported(mod, typ, id, fa); |
199 |
> |
if (lu_find(&rmats, mod)->data != NULL) /* make alias */ |
200 |
> |
newmat(id, mod); |
201 |
> |
} |
202 |
|
} |
203 |
|
|
204 |
|
|
243 |
|
{ |
244 |
|
if (!strcmp(id, curmat)) /* already set? */ |
245 |
|
return; |
246 |
+ |
if (!strcmp(id, VOIDID)) /* cannot set */ |
247 |
+ |
return; |
248 |
|
printf("m %s\n", id); |
249 |
|
strcpy(curmat, id); |
250 |
|
} |
251 |
|
|
252 |
|
|
253 |
+ |
setobj(id) /* set object name to this one */ |
254 |
+ |
char *id; |
255 |
+ |
{ |
256 |
+ |
register char *cp, *cp2; |
257 |
+ |
char *end = NULL; |
258 |
+ |
int diff = 0; |
259 |
+ |
/* use all but final suffix */ |
260 |
+ |
for (cp = id; *cp; cp++) |
261 |
+ |
if (*cp == '.') |
262 |
+ |
end = cp; |
263 |
+ |
if (end == NULL) |
264 |
+ |
end = cp; |
265 |
+ |
/* copy to current object */ |
266 |
+ |
for (cp = id, cp2 = curobj; cp < end; *cp2++ = *cp++) |
267 |
+ |
diff += *cp != *cp2; |
268 |
+ |
if (!diff && !*cp2) |
269 |
+ |
return; |
270 |
+ |
*cp2 = '\0'; |
271 |
+ |
fputs("o\no ", stdout); |
272 |
+ |
puts(curobj); |
273 |
+ |
} |
274 |
+ |
|
275 |
+ |
|
276 |
|
init() /* initialize dispatch table and output */ |
277 |
|
{ |
278 |
+ |
lu_init(&vertab, NVERTS); |
279 |
|
lu_init(&rdispatch, 22); |
280 |
|
add2dispatch("polygon", o_face); |
281 |
|
add2dispatch("cone", o_cone); |
291 |
|
add2dispatch("metal", o_metal); |
292 |
|
add2dispatch("metal2", o_metal); |
293 |
|
add2dispatch("glass", o_glass); |
294 |
+ |
add2dispatch("dielectric", o_dielectric); |
295 |
|
add2dispatch("trans", o_trans); |
296 |
|
add2dispatch("trans2", o_trans); |
297 |
|
add2dispatch("mirror", o_mirror); |
299 |
|
add2dispatch("spotlight", o_light); |
300 |
|
add2dispatch("glow", o_light); |
301 |
|
add2dispatch("illum", o_illum); |
302 |
< |
puts("# The following was converted from Radiance scene input"); |
303 |
< |
if (unit_mult < .999 || unit_mult > 1.001) |
302 |
> |
puts("# The following was converted from RADIANCE scene input"); |
303 |
> |
if (hasmult) |
304 |
|
printf("xf -s %.4e\n", unit_mult); |
305 |
+ |
printf("o %s\n", curobj); |
306 |
|
} |
307 |
|
|
308 |
|
|
309 |
|
uninit() /* mark end of MGF file */ |
310 |
|
{ |
311 |
< |
if (unit_mult < .999 || unit_mult > 1.001) |
311 |
> |
puts("o"); |
312 |
> |
if (hasmult) |
313 |
|
puts("xf"); |
314 |
< |
puts("# End of data converted from Radiance scene input"); |
314 |
> |
puts("# End of data converted from RADIANCE scene input"); |
315 |
|
lu_done(&rdispatch); |
316 |
|
lu_done(&rmats); |
317 |
+ |
lu_done(&vertab); |
318 |
|
} |
319 |
|
|
320 |
|
|
321 |
+ |
clrverts() /* clear vertex table */ |
322 |
+ |
{ |
323 |
+ |
register int i; |
324 |
+ |
|
325 |
+ |
lu_done(&vertab); |
326 |
+ |
for (i = 0; i < NVERTS; i++) |
327 |
+ |
vert[i].lused = 0; |
328 |
+ |
lu_init(&vertab, NVERTS); |
329 |
+ |
} |
330 |
+ |
|
331 |
+ |
|
332 |
|
add2dispatch(name, func) /* add function to dispatch table */ |
333 |
|
char *name; |
334 |
|
int (*func)(); |
346 |
|
} |
347 |
|
|
348 |
|
|
274 |
– |
char VKFMT[] = "%+1.9e %+1.9e %+1.9e"; |
275 |
– |
#define VKLEN 64 |
276 |
– |
|
277 |
– |
#define mkvkey(k,v) sprintf(k, VKFMT, (v)[0], (v)[1], (v)[2]) |
278 |
– |
|
279 |
– |
#define NVERTS 256 |
280 |
– |
|
281 |
– |
long clock; /* incremented at each vertex request */ |
282 |
– |
|
283 |
– |
struct vert { |
284 |
– |
long lused; /* when last used (0 if unassigned) */ |
285 |
– |
FVECT p; /* track point position only */ |
286 |
– |
} vert[NVERTS]; |
287 |
– |
|
288 |
– |
LUTAB vertab = LU_SINIT(free,NULL); /* our vertex lookup table */ |
289 |
– |
|
290 |
– |
|
349 |
|
char * |
350 |
< |
getvertid(vp) /* get/set vertex ID for this point */ |
350 |
> |
getvertid(vname, vp) /* get/set vertex ID for this point */ |
351 |
> |
char *vname; |
352 |
|
FVECT vp; |
353 |
|
{ |
354 |
< |
static char vname[6]; |
296 |
< |
char vkey[VKLEN]; |
354 |
> |
static char vkey[VKLEN]; |
355 |
|
register LUENT *lp; |
356 |
|
register int i, vndx; |
357 |
|
|
358 |
< |
if (!vertab.tsiz && !lu_init(&vertab, NVERTS)) |
301 |
< |
goto memerr; |
302 |
< |
clock++; /* increment counter */ |
358 |
> |
vclock++; /* increment counter */ |
359 |
|
mkvkey(vkey, vp); |
360 |
|
if ((lp = lu_find(&vertab, vkey)) == NULL) |
361 |
|
goto memerr; |
375 |
|
mkvkey(vkey, vert[vndx].p); |
376 |
|
lu_delete(&vertab, vkey); |
377 |
|
} |
378 |
< |
vert[vndx].lused = clock; /* assign it */ |
379 |
< |
VCOPY(vert[vndx].p, vp); |
324 |
< |
printf("v v%d =\np %.15g %.15g %.15g\n", /* print it */ |
378 |
> |
VCOPY(vert[vndx].p, vp); /* assign it */ |
379 |
> |
printf("v v%d =\n\tp %.15g %.15g %.15g\n", /* print it */ |
380 |
|
vndx, vp[0], vp[1], vp[2]); |
381 |
|
lp->data = (char *)&vert[vndx]; /* set it */ |
382 |
|
} else |
383 |
|
vndx = (struct vert *)lp->data - vert; |
384 |
+ |
vert[vndx].lused = vclock; /* record this use */ |
385 |
|
sprintf(vname, "v%d", vndx); |
386 |
|
return(vname); |
387 |
|
memerr: |
391 |
|
|
392 |
|
|
393 |
|
int |
394 |
+ |
o_unsupported(mod, typ, id, fa) /* mark unsupported primitive */ |
395 |
+ |
char *mod, *typ, *id; |
396 |
+ |
FUNARGS *fa; |
397 |
+ |
{ |
398 |
+ |
register int i; |
399 |
+ |
|
400 |
+ |
fputs("\n# Unsupported RADIANCE primitive:\n", stdout); |
401 |
+ |
printf("# %s %s %s", mod, typ, id); |
402 |
+ |
printf("\n# %d", fa->nsargs); |
403 |
+ |
for (i = 0; i < fa->nsargs; i++) |
404 |
+ |
printf(" %s", fa->sarg[i]); |
405 |
+ |
#ifdef IARGS |
406 |
+ |
printf("\n# %d", fa->niargs); |
407 |
+ |
for (i = 0; i < fa->niargs; i++) |
408 |
+ |
printf(" %ld", fa->iarg[i]); |
409 |
+ |
#else |
410 |
+ |
fputs("\n# 0", stdout); |
411 |
+ |
#endif |
412 |
+ |
printf("\n# %d", fa->nfargs); |
413 |
+ |
for (i = 0; i < fa->nfargs; i++) |
414 |
+ |
printf(" %g", fa->farg[i]); |
415 |
+ |
fputs("\n\n", stdout); |
416 |
+ |
return(0); |
417 |
+ |
} |
418 |
+ |
|
419 |
+ |
|
420 |
+ |
int |
421 |
|
o_face(mod, typ, id, fa) /* print out a polygon */ |
422 |
|
char *mod, *typ, *id; |
423 |
|
FUNARGS *fa; |
424 |
|
{ |
425 |
|
char entbuf[512]; |
426 |
< |
register char *cp1, *cp2; |
426 |
> |
register char *cp; |
427 |
|
register int i; |
428 |
|
|
429 |
|
if (fa->nfargs < 9 | fa->nfargs % 3) |
430 |
|
return(-1); |
431 |
|
setmat(mod); |
432 |
< |
printf("o %s\n", id); |
433 |
< |
cp1 = entbuf; |
434 |
< |
*cp1++ = 'f'; |
432 |
> |
setobj(id); |
433 |
> |
cp = entbuf; |
434 |
> |
*cp++ = 'f'; |
435 |
|
for (i = 0; i < fa->nfargs; i += 3) { |
436 |
< |
cp2 = getvertid(fa->farg + i); |
437 |
< |
*cp1++ = ' '; |
438 |
< |
while ((*cp1 = *cp2++)) |
439 |
< |
cp1++; |
436 |
> |
*cp++ = ' '; |
437 |
> |
getvertid(cp, fa->farg + i); |
438 |
> |
while (*cp) |
439 |
> |
cp++; |
440 |
|
} |
441 |
|
puts(entbuf); |
359 |
– |
puts("o"); |
442 |
|
return(0); |
443 |
|
} |
444 |
|
|
448 |
|
char *mod, *typ, *id; |
449 |
|
register FUNARGS *fa; |
450 |
|
{ |
451 |
+ |
char v1[6], v2[6]; |
452 |
+ |
|
453 |
|
if (fa->nfargs != 8) |
454 |
|
return(-1); |
455 |
|
setmat(mod); |
456 |
< |
printf("o %s\n", id); |
457 |
< |
printf("v cv1 =\np %.12g %.12g %.12g\n", |
458 |
< |
fa->farg[0], fa->farg[1], fa->farg[2]); |
375 |
< |
printf("v cv2 =\np %.12g %.12g %.12g\n", |
376 |
< |
fa->farg[3], fa->farg[4], fa->farg[5]); |
456 |
> |
setobj(id); |
457 |
> |
getvertid(v1, fa->farg); |
458 |
> |
getvertid(v2, fa->farg + 3); |
459 |
|
if (typ[1] == 'u') /* cup -> inverted cone */ |
460 |
< |
printf("cone cv1 %.12g cv2 %.12g\n", |
461 |
< |
-fa->farg[6], -fa->farg[7]); |
460 |
> |
printf("cone %s %.12g %s %.12g\n", |
461 |
> |
v1, -fa->farg[6], v2, -fa->farg[7]); |
462 |
|
else |
463 |
< |
printf("cone cv1 %.12g cv2 %.12g\n", |
464 |
< |
fa->farg[6], fa->farg[7]); |
383 |
< |
puts("o"); |
463 |
> |
printf("cone %s %.12g %s %.12g\n", |
464 |
> |
v1, fa->farg[6], v2, fa->farg[7]); |
465 |
|
return(0); |
466 |
|
} |
467 |
|
|
471 |
|
char *mod, *typ, *id; |
472 |
|
register FUNARGS *fa; |
473 |
|
{ |
474 |
+ |
char cent[6]; |
475 |
+ |
|
476 |
|
if (fa->nfargs != 4) |
477 |
|
return(-1); |
478 |
|
setmat(mod); |
479 |
< |
printf("o %s\n", id); |
480 |
< |
printf("v cent =\np %.12g %.12g %.12g\n", |
481 |
< |
fa->farg[0], fa->farg[1], fa->farg[2]); |
399 |
< |
printf("sph cent %.12g\n", typ[0]=='b' ? -fa->farg[3] : fa->farg[3]); |
400 |
< |
puts("o"); |
479 |
> |
setobj(id); |
480 |
> |
printf("sph %s %.12g\n", getvertid(cent, fa->farg), |
481 |
> |
typ[0]=='b' ? -fa->farg[3] : fa->farg[3]); |
482 |
|
return(0); |
483 |
|
} |
484 |
|
|
488 |
|
char *mod, *typ, *id; |
489 |
|
register FUNARGS *fa; |
490 |
|
{ |
491 |
+ |
char v1[6], v2[6]; |
492 |
+ |
|
493 |
|
if (fa->nfargs != 7) |
494 |
|
return(-1); |
495 |
|
setmat(mod); |
496 |
< |
printf("o %s\n", id); |
497 |
< |
printf("v cv1 =\np %.12g %.12g %.12g\n", |
498 |
< |
fa->farg[0], fa->farg[1], fa->farg[2]); |
499 |
< |
printf("v cv2 =\np %.12g %.12g %.12g\n", |
500 |
< |
fa->farg[3], fa->farg[4], fa->farg[5]); |
418 |
< |
printf("cyl cv1 %.12g cv2\n", |
419 |
< |
typ[0]=='t' ? -fa->farg[6] : fa->farg[6]); |
420 |
< |
puts("o"); |
496 |
> |
setobj(id); |
497 |
> |
getvertid(v1, fa->farg); |
498 |
> |
getvertid(v2, fa->farg + 3); |
499 |
> |
printf("cyl %s %.12g %s\n", v1, |
500 |
> |
typ[0]=='t' ? -fa->farg[6] : fa->farg[6], v2); |
501 |
|
return(0); |
502 |
|
} |
503 |
|
|
510 |
|
if (fa->nfargs != 8) |
511 |
|
return(-1); |
512 |
|
setmat(mod); |
513 |
< |
printf("o %s\n", id); |
514 |
< |
printf("v cent =\np %.12g %.12g %.12g\n", |
513 |
> |
setobj(id); |
514 |
> |
printf("v cent =\n\tp %.12g %.12g %.12g\n", |
515 |
|
fa->farg[0], fa->farg[1], fa->farg[2]); |
516 |
< |
printf("n %.12g %.12g %.12g\n", |
516 |
> |
printf("\tn %.12g %.12g %.12g\n", |
517 |
|
fa->farg[3], fa->farg[4], fa->farg[5]); |
518 |
|
if (fa->farg[6] < fa->farg[7]) |
519 |
|
printf("ring cent %.12g %.12g\n", |
521 |
|
else |
522 |
|
printf("ring cent %.12g %.12g\n", |
523 |
|
fa->farg[7], fa->farg[6]); |
444 |
– |
puts("o"); |
524 |
|
return(0); |
525 |
|
} |
526 |
|
|
530 |
|
char *mod, *typ, *id; |
531 |
|
FUNARGS *fa; |
532 |
|
{ |
533 |
< |
return(0); /* this is too damned difficult! */ |
533 |
> |
register int i; |
534 |
> |
register char *cp; |
535 |
> |
char *start = NULL, *end = NULL; |
536 |
> |
/* |
537 |
> |
* We don't really know how to do this, so we just create |
538 |
> |
* a reference to an undefined MGF file and it's the user's |
539 |
> |
* responsibility to create this file and put the appropriate |
540 |
> |
* stuff into it. |
541 |
> |
*/ |
542 |
> |
if (fa->nsargs < 1) |
543 |
> |
return(-1); |
544 |
> |
setmat(mod); /* only works if surfaces are void */ |
545 |
> |
setobj(id); |
546 |
> |
for (cp = fa->sarg[0]; *cp; cp++) /* construct MGF file name */ |
547 |
> |
if (*cp == '/') |
548 |
> |
start = cp+1; |
549 |
> |
else if (*cp == '.') |
550 |
> |
end = cp; |
551 |
> |
if (start == NULL) |
552 |
> |
start = fa->sarg[0]; |
553 |
> |
if (end == NULL || start >= end) |
554 |
> |
end = cp; |
555 |
> |
fputs("i ", stdout); /* print include entity */ |
556 |
> |
for (cp = start; cp < end; cp++) |
557 |
> |
putchar(*cp); |
558 |
> |
fputs(".mgf", stdout); /* add MGF suffix */ |
559 |
> |
for (i = 1; i < fa->nsargs; i++) { /* add transform */ |
560 |
> |
putchar(' '); |
561 |
> |
fputs(fa->sarg[i], stdout); |
562 |
> |
} |
563 |
> |
putchar('\n'); |
564 |
> |
clrverts(); /* vertex id's no longer reliable */ |
565 |
> |
return(0); |
566 |
|
} |
567 |
|
|
568 |
|
|
569 |
|
int |
459 |
– |
o_source(mod, typ, id, fa) /* convert a source */ |
460 |
– |
char *mod, *typ, *id; |
461 |
– |
FUNARGS *fa; |
462 |
– |
{ |
463 |
– |
return(0); /* there is no MGF equivalent! */ |
464 |
– |
} |
465 |
– |
|
466 |
– |
|
467 |
– |
int |
570 |
|
o_illum(mod, typ, id, fa) /* convert an illum material */ |
571 |
|
char *mod, *typ, *id; |
572 |
|
FUNARGS *fa; |
577 |
|
} |
578 |
|
/* else create invisible material */ |
579 |
|
newmat(id, NULL); |
580 |
< |
puts("ts 1 0"); |
580 |
> |
puts("\tts 1 0"); |
581 |
|
return(0); |
582 |
|
} |
583 |
|
|
595 |
|
newmat(id, NULL); |
596 |
|
rrgb[0] = fa->farg[0]; rrgb[1] = fa->farg[1]; rrgb[2] = fa->farg[2]; |
597 |
|
rgb_cie(cxyz, rrgb); |
598 |
< |
puts("c"); /* put diffuse component */ |
598 |
> |
puts("\tc"); /* put diffuse component */ |
599 |
|
d = cxyz[0] + cxyz[1] + cxyz[2]; |
600 |
|
if (d > FTINY) |
601 |
< |
printf("cxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
602 |
< |
printf("rd %.4f\n", cxyz[1]*(1. - fa->farg[3])); |
603 |
< |
puts("c"); /* put specular component */ |
604 |
< |
printf("rs %.4f %.4f\n", fa->farg[3], |
605 |
< |
typ[7]=='2' ? .5*(fa->farg[4] + fa->farg[5]) : |
606 |
< |
fa->farg[4]); |
601 |
> |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
602 |
> |
printf("\trd %.4f\n", cxyz[1]*(1. - fa->farg[3])); |
603 |
> |
if (fa->farg[3] > FTINY) { /* put specular component */ |
604 |
> |
puts("\tc"); |
605 |
> |
printf("\trs %.4f %.4f\n", fa->farg[3], |
606 |
> |
typ[7]=='2' ? .5*(fa->farg[4] + fa->farg[5]) : |
607 |
> |
fa->farg[4]); |
608 |
> |
} |
609 |
|
return(0); |
610 |
|
} |
611 |
|
|
623 |
|
newmat(id, NULL); |
624 |
|
rrgb[0] = fa->farg[0]; rrgb[1] = fa->farg[1]; rrgb[2] = fa->farg[2]; |
625 |
|
rgb_cie(cxyz, rrgb); |
626 |
< |
puts("c"); /* put diffuse component */ |
626 |
> |
puts("\tc"); /* put diffuse component */ |
627 |
|
d = cxyz[0] + cxyz[1] + cxyz[2]; |
628 |
|
if (d > FTINY) |
629 |
< |
printf("cxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
630 |
< |
printf("rd %.4f\n", cxyz[1]*(1. - fa->farg[3])); |
629 |
> |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
630 |
> |
printf("\trd %.4f\n", cxyz[1]*(1. - fa->farg[3])); |
631 |
|
/* put specular component */ |
632 |
< |
printf("rs %.4f %.4f\n", cxyz[1]*fa->farg[3], |
632 |
> |
printf("\trs %.4f %.4f\n", cxyz[1]*fa->farg[3], |
633 |
|
typ[5]=='2' ? .5*(fa->farg[4] + fa->farg[5]) : |
634 |
|
fa->farg[4]); |
635 |
|
return(0); |
650 |
|
newmat(id, NULL); |
651 |
|
if (fa->nfargs == 4) |
652 |
|
nrfr = fa->farg[3]; |
653 |
+ |
printf("\tir %f 0\n", nrfr); |
654 |
|
F = (1. - nrfr)/(1. + nrfr); /* use normal incidence */ |
655 |
|
F *= F; |
656 |
|
for (i = 0; i < 3; i++) { |
657 |
< |
rrgb[i] = (1. - F)*(1. - F)/(1. - F*F*fa->farg[i]*fa->farg[i]); |
553 |
< |
trgb[i] = F * (1. + (1. - 2.*F)*fa->farg[i]) / |
657 |
> |
trgb[i] = fa->farg[i] * (1. - F)*(1. - F) / |
658 |
|
(1. - F*F*fa->farg[i]*fa->farg[i]); |
659 |
+ |
rrgb[i] = F * (1. + (1. - 2.*F)*fa->farg[i]) / |
660 |
+ |
(1. - F*F*fa->farg[i]*fa->farg[i]); |
661 |
|
} |
662 |
|
rgb_cie(cxyz, rrgb); /* put reflected component */ |
663 |
< |
puts("c"); |
663 |
> |
puts("\tc"); |
664 |
|
d = cxyz[0] + cxyz[1] + cxyz[2]; |
665 |
|
if (d > FTINY) |
666 |
< |
printf("cxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
667 |
< |
printf("rs %.4f 0\n", cxyz[1]); |
666 |
> |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
667 |
> |
printf("\trs %.4f 0\n", cxyz[1]); |
668 |
|
rgb_cie(cxyz, trgb); /* put transmitted component */ |
669 |
< |
puts("c"); |
669 |
> |
puts("\tc"); |
670 |
|
d = cxyz[0] + cxyz[1] + cxyz[2]; |
671 |
|
if (d > FTINY) |
672 |
< |
printf("cxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
673 |
< |
printf("ts %.4f 0\n", cxyz[1]); |
672 |
> |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
673 |
> |
printf("\tts %.4f 0\n", cxyz[1]); |
674 |
|
return(0); |
675 |
|
} |
676 |
|
|
677 |
|
|
678 |
|
int |
679 |
+ |
o_dielectric(mod, typ, id, fa) /* convert a dielectric material */ |
680 |
+ |
char *mod, *typ, *id; |
681 |
+ |
register FUNARGS *fa; |
682 |
+ |
{ |
683 |
+ |
COLOR cxyz, trgb; |
684 |
+ |
double F, d; |
685 |
+ |
register int i; |
686 |
+ |
|
687 |
+ |
if (fa->nfargs != 5) |
688 |
+ |
return(-1); |
689 |
+ |
newmat(id, NULL); |
690 |
+ |
F = (1. - fa->farg[3])/(1. + fa->farg[3]); /* normal incidence */ |
691 |
+ |
F *= F; |
692 |
+ |
for (i = 0; i < 3; i++) |
693 |
+ |
trgb[i] = (1. - F)*pow(fa->farg[i], C_1SIDEDTHICK/unit_mult); |
694 |
+ |
printf("\tir %f 0\n", fa->farg[3]); /* put index of refraction */ |
695 |
+ |
printf("\tsides 1\n"); |
696 |
+ |
puts("\tc"); /* put reflected component */ |
697 |
+ |
printf("\trs %.4f 0\n", F); |
698 |
+ |
rgb_cie(cxyz, trgb); /* put transmitted component */ |
699 |
+ |
puts("\tc"); |
700 |
+ |
d = cxyz[0] + cxyz[1] + cxyz[2]; |
701 |
+ |
if (d > FTINY) |
702 |
+ |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
703 |
+ |
printf("\tts %.4f 0\n", cxyz[1]); |
704 |
+ |
return(0); |
705 |
+ |
} |
706 |
+ |
|
707 |
+ |
|
708 |
+ |
int |
709 |
|
o_mirror(mod, typ, id, fa) /* convert a mirror material */ |
710 |
|
char *mod, *typ, *id; |
711 |
|
register FUNARGS *fa; |
722 |
|
newmat(id, NULL); |
723 |
|
rrgb[0] = fa->farg[0]; rrgb[1] = fa->farg[1]; rrgb[2] = fa->farg[2]; |
724 |
|
rgb_cie(cxyz, rrgb); |
725 |
< |
puts("c"); /* put specular component */ |
725 |
> |
puts("\tc"); /* put specular component */ |
726 |
|
d = cxyz[0] + cxyz[1] + cxyz[2]; |
727 |
|
if (d > FTINY) |
728 |
< |
printf("cxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
729 |
< |
printf("rs %.4f 0\n", cxyz[1]); |
728 |
> |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
729 |
> |
printf("\trs %.4f 0\n", cxyz[1]); |
730 |
|
return(0); |
731 |
|
} |
732 |
|
|
755 |
|
newmat(id, NULL); |
756 |
|
rrgb[0] = fa->farg[0]; rrgb[1] = fa->farg[1]; rrgb[2] = fa->farg[2]; |
757 |
|
rgb_cie(cxyz, rrgb); |
758 |
< |
puts("c"); /* put transmitted diffuse */ |
758 |
> |
puts("\tc"); /* put transmitted diffuse */ |
759 |
|
d = cxyz[0] + cxyz[1] + cxyz[2]; |
760 |
|
if (d > FTINY) |
761 |
< |
printf("cxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
762 |
< |
printf("td %.4f\n", cxyz[1]*trans*(1. - fa->farg[3])*(1. - tspec)); |
761 |
> |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
762 |
> |
printf("\ttd %.4f\n", cxyz[1]*trans*(1. - fa->farg[3])*(1. - tspec)); |
763 |
|
/* put transmitted specular */ |
764 |
< |
printf("ts %.4f %.4f\n", cxyz[1]*trans*tspec*(1. - fa->farg[3]), rough); |
764 |
> |
printf("\tts %.4f %.4f\n", cxyz[1]*trans*tspec*(1. - fa->farg[3]), rough); |
765 |
|
/* put reflected diffuse */ |
766 |
< |
printf("rd %.4f\n", cxyz[1]*(1. - fa->farg[3])*(1. - trans)); |
767 |
< |
puts("c"); /* put reflected specular */ |
768 |
< |
printf("rs %.4f %.4f\n", fa->farg[3], rough); |
766 |
> |
printf("\trd %.4f\n", cxyz[1]*(1. - fa->farg[3])*(1. - trans)); |
767 |
> |
puts("\tc"); /* put reflected specular */ |
768 |
> |
printf("\trs %.4f %.4f\n", fa->farg[3], rough); |
769 |
|
return(0); |
770 |
|
} |
771 |
|
|
784 |
|
rrgb[0] = fa->farg[0]; rrgb[1] = fa->farg[1]; rrgb[2] = fa->farg[2]; |
785 |
|
rgb_cie(cxyz, rrgb); |
786 |
|
d = cxyz[0] + cxyz[1] + cxyz[2]; |
787 |
< |
puts("c"); |
787 |
> |
puts("\tc"); |
788 |
|
if (d > FTINY) |
789 |
< |
printf("cxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
790 |
< |
printf("ed %.4g\n", cxyz[1]); |
789 |
> |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
790 |
> |
printf("\ted %.4g\n", cxyz[1]*(PI*WHTEFFICACY)); |
791 |
|
return(0); |
792 |
|
} |