26 |
|
|
27 |
|
/* the current contexts */ |
28 |
|
C_COLOR *c_ccolor = &c_uncolor; |
29 |
+ |
char *c_ccname = NULL; |
30 |
|
C_MATERIAL *c_cmaterial = &c_unmaterial; |
31 |
+ |
char *c_cmname = NULL; |
32 |
|
C_VERTEX *c_cvertex = &c_unvertex; |
33 |
+ |
char *c_cvname = NULL; |
34 |
|
|
35 |
|
static LUTAB clr_tab = LU_SINIT(free,free); /* color lookup table */ |
36 |
|
static LUTAB mat_tab = LU_SINIT(free,free); /* material lookup table */ |
61 |
|
if (ac == 1) { /* set unnamed color context */ |
62 |
|
c_uncolor = c_dfcolor; |
63 |
|
c_ccolor = &c_uncolor; |
64 |
+ |
c_ccname = NULL; |
65 |
|
return(MG_OK); |
66 |
|
} |
67 |
|
lp = lu_find(&clr_tab, av[1]); /* lookup context */ |
68 |
|
if (lp == NULL) |
69 |
|
return(MG_EMEM); |
70 |
+ |
c_ccname = lp->key; |
71 |
+ |
c_ccolor = (C_COLOR *)lp->data; |
72 |
|
if (ac == 2) { /* reestablish previous context */ |
73 |
< |
if (lp->data == NULL) |
73 |
> |
if (c_ccolor == NULL) |
74 |
|
return(MG_EUNDEF); |
69 |
– |
c_ccolor = (C_COLOR *)lp->data; |
75 |
|
return(MG_OK); |
76 |
|
} |
77 |
|
if (av[2][0] != '=' || av[2][1]) |
78 |
|
return(MG_ETYPE); |
79 |
< |
if (lp->key == NULL) { /* create new color context */ |
79 |
> |
if (c_ccolor == NULL) { /* create new color context */ |
80 |
|
lp->key = (char *)malloc(strlen(av[1])+1); |
81 |
|
if (lp->key == NULL) |
82 |
|
return(MG_EMEM); |
84 |
|
lp->data = (char *)malloc(sizeof(C_COLOR)); |
85 |
|
if (lp->data == NULL) |
86 |
|
return(MG_EMEM); |
87 |
+ |
c_ccname = lp->key; |
88 |
+ |
c_ccolor = (C_COLOR *)lp->data; |
89 |
+ |
c_ccolor->clock = 0; |
90 |
|
} |
91 |
< |
c_ccolor = (C_COLOR *)lp->data; |
91 |
> |
i = c_ccolor->clock; |
92 |
|
if (ac == 3) { /* use default template */ |
93 |
|
*c_ccolor = c_dfcolor; |
94 |
+ |
c_ccolor->clock = i + 1; |
95 |
|
return(MG_OK); |
96 |
|
} |
97 |
|
lp = lu_find(&clr_tab, av[3]); /* lookup template */ |
100 |
|
if (lp->data == NULL) |
101 |
|
return(MG_EUNDEF); |
102 |
|
*c_ccolor = *(C_COLOR *)lp->data; |
103 |
< |
if (ac > 4) |
95 |
< |
return(MG_EARGC); |
103 |
> |
c_ccolor->clock = i + 1; |
104 |
|
return(MG_OK); |
105 |
|
case MG_E_CXY: /* assign CIE XY value */ |
106 |
|
if (ac != 3) |
113 |
|
if (c_ccolor->cx < 0. | c_ccolor->cy < 0. | |
114 |
|
c_ccolor->cx + c_ccolor->cy > 1.) |
115 |
|
return(MG_EILL); |
116 |
+ |
c_ccolor->clock++; |
117 |
|
return(MG_OK); |
118 |
|
case MG_E_CSPEC: /* assign spectral values */ |
119 |
|
if (ac < 5) |
120 |
|
return(MG_EARGC); |
121 |
< |
if (!isint(av[1]) || !isint(av[2])) |
121 |
> |
if (!isflt(av[1]) || !isflt(av[2])) |
122 |
|
return(MG_ETYPE); |
123 |
< |
return(setspectrum(c_ccolor, atoi(av[1]), atoi(av[2]), |
123 |
> |
return(setspectrum(c_ccolor, atof(av[1]), atof(av[2]), |
124 |
|
ac-3, av+3)); |
125 |
|
case MG_E_CMIX: /* mix colors */ |
126 |
|
if (ac < 5 || (ac-1)%2) |
149 |
|
w, (C_COLOR *)lp->data); |
150 |
|
wsum += w; |
151 |
|
} |
152 |
+ |
c_ccolor->clock++; |
153 |
|
return(MG_OK); |
154 |
|
} |
155 |
|
return(MG_EUNK); |
161 |
|
int ac; |
162 |
|
register char **av; |
163 |
|
{ |
164 |
+ |
int i; |
165 |
|
register LUENT *lp; |
166 |
|
|
167 |
|
switch (mg_entity(av[0])) { |
171 |
|
if (ac == 1) { /* set unnamed material context */ |
172 |
|
c_unmaterial = c_dfmaterial; |
173 |
|
c_cmaterial = &c_unmaterial; |
174 |
+ |
c_cmname = NULL; |
175 |
|
return(MG_OK); |
176 |
|
} |
177 |
|
lp = lu_find(&mat_tab, av[1]); /* lookup context */ |
178 |
|
if (lp == NULL) |
179 |
|
return(MG_EMEM); |
180 |
+ |
c_cmname = lp->key; |
181 |
+ |
c_cmaterial = (C_MATERIAL *)lp->data; |
182 |
|
if (ac == 2) { /* reestablish previous context */ |
183 |
< |
if (lp->data == NULL) |
183 |
> |
if (c_cmaterial == NULL) |
184 |
|
return(MG_EUNDEF); |
171 |
– |
c_cmaterial = (C_MATERIAL *)lp->data; |
185 |
|
return(MG_OK); |
186 |
|
} |
187 |
|
if (av[2][0] != '=' || av[2][1]) |
188 |
|
return(MG_ETYPE); |
189 |
< |
if (lp->key == NULL) { /* create new material context */ |
189 |
> |
if (c_cmaterial == NULL) { /* create new material */ |
190 |
|
lp->key = (char *)malloc(strlen(av[1])+1); |
191 |
|
if (lp->key == NULL) |
192 |
|
return(MG_EMEM); |
194 |
|
lp->data = (char *)malloc(sizeof(C_MATERIAL)); |
195 |
|
if (lp->data == NULL) |
196 |
|
return(MG_EMEM); |
197 |
+ |
c_cmname = lp->key; |
198 |
+ |
c_cmaterial = (C_MATERIAL *)lp->data; |
199 |
+ |
c_cmaterial->clock = 0; |
200 |
|
} |
201 |
< |
c_cmaterial = (C_MATERIAL *)lp->data; |
201 |
> |
i = c_cmaterial->clock; |
202 |
|
if (ac == 3) { /* use default template */ |
203 |
|
*c_cmaterial = c_dfmaterial; |
204 |
< |
c_cmaterial->name = lp->key; |
204 |
> |
c_cmaterial->clock = i + 1; |
205 |
|
return(MG_OK); |
206 |
|
} |
207 |
|
lp = lu_find(&mat_tab, av[3]); /* lookup template */ |
210 |
|
if (lp->data == NULL) |
211 |
|
return(MG_EUNDEF); |
212 |
|
*c_cmaterial = *(C_MATERIAL *)lp->data; |
213 |
< |
c_cmaterial->name = lp->key; |
198 |
< |
c_cmaterial->clock = 1; |
199 |
< |
if (ac > 4) |
200 |
< |
return(MG_EARGC); |
213 |
> |
c_cmaterial->clock = i + 1; |
214 |
|
return(MG_OK); |
215 |
|
case MG_E_RD: /* set diffuse reflectance */ |
216 |
|
if (ac != 2) |
243 |
|
if (c_cmaterial->td < 0. | c_cmaterial->td > 1.) |
244 |
|
return(MG_EILL); |
245 |
|
c_cmaterial->td_c = *c_ccolor; |
246 |
+ |
c_cmaterial->clock++; |
247 |
|
return(MG_OK); |
248 |
|
case MG_E_RS: /* set specular reflectance */ |
249 |
|
if (ac != 3) |
271 |
|
c_cmaterial->ts_c = *c_ccolor; |
272 |
|
c_cmaterial->clock++; |
273 |
|
return(MG_OK); |
274 |
+ |
case MG_E_SIDES: /* set number of sides */ |
275 |
+ |
if (ac != 2) |
276 |
+ |
return(MG_EARGC); |
277 |
+ |
if (!isint(av[1])) |
278 |
+ |
return(MG_ETYPE); |
279 |
+ |
i = atoi(av[1]); |
280 |
+ |
if (i == 1) |
281 |
+ |
c_cmaterial->sided = 1; |
282 |
+ |
else if (i == 2) |
283 |
+ |
c_cmaterial->sided = 0; |
284 |
+ |
else |
285 |
+ |
return(MG_EILL); |
286 |
+ |
c_cmaterial->clock++; |
287 |
+ |
return(MG_OK); |
288 |
|
} |
289 |
|
return(MG_EUNK); |
290 |
|
} |
295 |
|
int ac; |
296 |
|
register char **av; |
297 |
|
{ |
298 |
+ |
int i; |
299 |
|
register LUENT *lp; |
300 |
|
|
301 |
|
switch (mg_entity(av[0])) { |
305 |
|
if (ac == 1) { /* set unnamed vertex context */ |
306 |
|
c_unvertex = c_dfvertex; |
307 |
|
c_cvertex = &c_unvertex; |
308 |
+ |
c_cvname = NULL; |
309 |
|
return(MG_OK); |
310 |
|
} |
311 |
|
lp = lu_find(&vtx_tab, av[1]); /* lookup context */ |
312 |
|
if (lp == NULL) |
313 |
|
return(MG_EMEM); |
314 |
+ |
c_cvname = lp->key; |
315 |
+ |
c_cvertex = (C_VERTEX *)lp->data; |
316 |
|
if (ac == 2) { /* reestablish previous context */ |
317 |
< |
if (lp->data == NULL) |
317 |
> |
if (c_cvertex == NULL) |
318 |
|
return(MG_EUNDEF); |
287 |
– |
c_cvertex = (C_VERTEX *)lp->data; |
319 |
|
return(MG_OK); |
320 |
|
} |
321 |
|
if (av[2][0] != '=' || av[2][1]) |
322 |
|
return(MG_ETYPE); |
323 |
< |
if (lp->key == NULL) { /* create new vertex context */ |
323 |
> |
if (c_cvertex == NULL) { /* create new vertex context */ |
324 |
|
lp->key = (char *)malloc(strlen(av[1])+1); |
325 |
|
if (lp->key == NULL) |
326 |
|
return(MG_EMEM); |
328 |
|
lp->data = (char *)malloc(sizeof(C_VERTEX)); |
329 |
|
if (lp->data == NULL) |
330 |
|
return(MG_EMEM); |
331 |
+ |
c_cvname = lp->key; |
332 |
+ |
c_cvertex = (C_VERTEX *)lp->data; |
333 |
|
} |
334 |
< |
c_cvertex = (C_VERTEX *)lp->data; |
334 |
> |
i = c_cvertex->clock; |
335 |
|
if (ac == 3) { /* use default template */ |
336 |
|
*c_cvertex = c_dfvertex; |
337 |
+ |
c_cvertex->clock = i + 1; |
338 |
|
return(MG_OK); |
339 |
|
} |
340 |
|
lp = lu_find(&vtx_tab, av[3]); /* lookup template */ |
343 |
|
if (lp->data == NULL) |
344 |
|
return(MG_EUNDEF); |
345 |
|
*c_cvertex = *(C_VERTEX *)lp->data; |
346 |
< |
if (ac > 4) |
313 |
< |
return(MG_EARGC); |
346 |
> |
c_cvertex->clock = i + 1; |
347 |
|
return(MG_OK); |
348 |
|
case MG_E_POINT: /* set point */ |
349 |
|
if (ac != 4) |
353 |
|
c_cvertex->p[0] = atof(av[1]); |
354 |
|
c_cvertex->p[1] = atof(av[2]); |
355 |
|
c_cvertex->p[2] = atof(av[3]); |
356 |
+ |
c_cvertex->clock++; |
357 |
|
return(MG_OK); |
358 |
|
case MG_E_NORMAL: /* set normal */ |
359 |
|
if (ac != 4) |
364 |
|
c_cvertex->n[1] = atof(av[2]); |
365 |
|
c_cvertex->n[2] = atof(av[3]); |
366 |
|
(void)normalize(c_cvertex->n); |
367 |
+ |
c_cvertex->clock++; |
368 |
|
return(MG_OK); |
369 |
|
} |
370 |
|
return(MG_EUNK); |
376 |
|
{ |
377 |
|
c_uncolor = c_dfcolor; |
378 |
|
c_ccolor = &c_uncolor; |
379 |
+ |
c_ccname = NULL; |
380 |
|
lu_done(&clr_tab); |
381 |
|
c_unmaterial = c_dfmaterial; |
382 |
|
c_cmaterial = &c_unmaterial; |
383 |
+ |
c_cmname = NULL; |
384 |
|
lu_done(&mat_tab); |
385 |
|
c_unvertex = c_dfvertex; |
386 |
|
c_cvertex = &c_unvertex; |
387 |
+ |
c_cvname = NULL; |
388 |
|
lu_done(&vtx_tab); |
389 |
|
} |
390 |
|
|
391 |
|
|
392 |
+ |
C_MATERIAL * |
393 |
+ |
c_getmaterial(name) /* get a named material */ |
394 |
+ |
char *name; |
395 |
+ |
{ |
396 |
+ |
register LUENT *lp; |
397 |
+ |
|
398 |
+ |
if ((lp = lu_find(&mat_tab, name)) == NULL) |
399 |
+ |
return(NULL); |
400 |
+ |
return((C_MATERIAL *)lp->data); |
401 |
+ |
} |
402 |
+ |
|
403 |
+ |
|
404 |
|
C_VERTEX * |
405 |
|
c_getvert(name) /* get a named vertex */ |
406 |
|
char *name; |
413 |
|
} |
414 |
|
|
415 |
|
|
416 |
+ |
C_COLOR * |
417 |
+ |
c_getcolor(name) /* get a named color */ |
418 |
+ |
char *name; |
419 |
+ |
{ |
420 |
+ |
register LUENT *lp; |
421 |
+ |
|
422 |
+ |
if ((lp = lu_find(&clr_tab, name)) == NULL) |
423 |
+ |
return(NULL); |
424 |
+ |
return((C_COLOR *)lp->data); |
425 |
+ |
} |
426 |
+ |
|
427 |
+ |
|
428 |
|
int |
429 |
|
c_isgrey(clr) /* check if color is grey */ |
430 |
|
register C_COLOR *clr; |
431 |
|
{ |
432 |
< |
if (!clr->flags) |
432 |
> |
if (!(clr->flags & (C_CSXY|C_CSSPEC))) |
433 |
|
return(1); /* no settings == grey */ |
434 |
|
c_ccvt(clr, C_CSXY); |
435 |
|
return(clr->cx >= .323 && clr->cx <= .343 && |
445 |
|
double x, y, z; |
446 |
|
register int i; |
447 |
|
|
448 |
< |
if (clr->flags & fl) /* already done */ |
448 |
> |
fl &= ~clr->flags; /* ignore what's done */ |
449 |
> |
if (!fl) /* everything's done! */ |
450 |
|
return; |
451 |
< |
if (!(clr->flags & (C_SXY|C_SSPEC)) /* nothing set */ |
451 |
> |
if (!(clr->flags & (C_CSXY|C_CSSPEC))) /* nothing set! */ |
452 |
|
*clr = c_dfcolor; |
453 |
< |
else if (fl & C_CSXY) { /* cspec -> cxy */ |
453 |
> |
if (fl & C_CSXY) { /* cspec -> cxy */ |
454 |
|
x = y = z = 0.; |
455 |
|
for (i = 0; i < C_CNSS; i++) { |
456 |
|
x += cie_xf.ssamp[i] * clr->ssamp[i]; |
457 |
|
y += cie_yf.ssamp[i] * clr->ssamp[i]; |
458 |
|
z += cie_zf.ssamp[i] * clr->ssamp[i]; |
459 |
|
} |
460 |
+ |
x /= (double)cie_xf.ssum; |
461 |
+ |
y /= (double)cie_yf.ssum; |
462 |
+ |
z /= (double)cie_zf.ssum; |
463 |
|
z += x + y; |
464 |
|
clr->cx = x / z; |
465 |
|
clr->cy = y / z; |
466 |
|
clr->flags |= C_CSXY; |
467 |
< |
} else { /* cxy -> cspec */ |
467 |
> |
} else if (fl & C_CSSPEC) { /* cxy -> cspec */ |
468 |
|
z = (cie_xf.ssum + cie_yf.ssum + cie_zf.ssum) / 3.; |
469 |
|
x = clr->cx * z / cie_xf.ssum; |
470 |
|
y = clr->cy * z / cie_yf.ssum; |
477 |
|
z * cie_zf.ssamp[i] ; |
478 |
|
clr->flags |= C_CSSPEC; |
479 |
|
} |
480 |
+ |
if (fl & C_CSEFF) { /* compute efficacy */ |
481 |
+ |
if (clr->flags & C_CDSPEC) { /* from spectrum */ |
482 |
+ |
y = 0.; |
483 |
+ |
for (i = 0; i < C_CNSS; i++) |
484 |
+ |
y += cie_yf.ssamp[i] * clr->ssamp[i]; |
485 |
+ |
clr->eff = C_CLPWM * y / clr->ssum; |
486 |
+ |
} else /* clr->flags & C_CDXY */ { /* from (x,y) */ |
487 |
+ |
clr->eff = clr->cx*cie_xf.eff + clr->cy*cie_yf.eff + |
488 |
+ |
(1. - clr->cx - clr->cy)*cie_zf.eff; |
489 |
+ |
} |
490 |
+ |
clr->flags |= C_CSEFF; |
491 |
+ |
} |
492 |
|
} |
493 |
|
|
494 |
|
|
495 |
|
static int |
496 |
|
setspectrum(clr, wlmin, wlmax, ac, av) /* convert a spectrum */ |
497 |
|
register C_COLOR *clr; |
498 |
< |
int wlmin, wlmax; |
498 |
> |
double wlmin, wlmax; |
499 |
|
int ac; |
500 |
|
char **av; |
501 |
|
{ |
502 |
|
double scale; |
503 |
< |
float *va; |
504 |
< |
register int i; |
505 |
< |
int wl, pos; |
503 |
> |
float va[C_CNSS]; |
504 |
> |
register int i, pos; |
505 |
> |
int n, imax; |
506 |
> |
int wl; |
507 |
|
double wl0, wlstep; |
508 |
< |
|
509 |
< |
if (wlmin < C_CMINWL || wlmin >= wlmax || wlmax > C_CMAXWL) |
508 |
> |
/* check bounds */ |
509 |
> |
if (wlmax <= C_CMINWL | wlmax <= wlmin | wlmin >= C_CMAXWL) |
510 |
|
return(MG_EILL); |
511 |
< |
if ((va = (float *)malloc(ac*sizeof(float))) == NULL) |
512 |
< |
return(MG_EMEM); |
511 |
> |
wlstep = (wlmax - wlmin)/(ac-1); |
512 |
> |
while (wlmin < C_CMINWL) { |
513 |
> |
wlmin += wlstep; |
514 |
> |
ac--; av++; |
515 |
> |
} |
516 |
> |
while (wlmax > C_CMAXWL) { |
517 |
> |
wlmax -= wlstep; |
518 |
> |
ac--; |
519 |
> |
} |
520 |
> |
if (ac < 2) |
521 |
> |
return(MG_EILL); |
522 |
> |
imax = ac; /* box filter if necessary */ |
523 |
> |
if (wlstep < C_CWLI) { |
524 |
> |
wlstep = C_CWLI; |
525 |
> |
imax = (wlmax - wlmin)/wlstep; |
526 |
> |
} |
527 |
|
scale = 0.; /* get values and maximum */ |
528 |
< |
for (i = 0; i < ac; i++) { |
529 |
< |
if (!isflt(av[i])) |
530 |
< |
return(MG_ETYPE); |
531 |
< |
va[i] = atof(av[i]); |
528 |
> |
pos = 0; |
529 |
> |
for (i = 0; i < imax; i++) { |
530 |
> |
va[i] = 0.; n = 0; |
531 |
> |
while (pos < (i+.5)*ac/imax) { |
532 |
> |
if (!isflt(av[pos])) |
533 |
> |
return(MG_ETYPE); |
534 |
> |
va[i] += atof(av[pos++]); |
535 |
> |
n++; |
536 |
> |
} |
537 |
> |
if (n > 1) |
538 |
> |
va[i] /= (double)n; |
539 |
|
if (va[i] < 0.) |
540 |
|
return(MG_EILL); |
541 |
|
if (va[i] > scale) |
546 |
|
scale = C_CMAXV / scale; |
547 |
|
clr->ssum = 0; /* convert to our spacing */ |
548 |
|
wl0 = wlmin; |
449 |
– |
wlstep = (double)(wlmax - wlmin)/(ac-1); |
549 |
|
pos = 0; |
550 |
|
for (i = 0, wl = C_CMINWL; i < C_CNSS; i++, wl += C_CWLI) |
551 |
< |
if (wl < wlmin || wl > wlmax) |
551 |
> |
if (wl < wlmin | wl > wlmax) |
552 |
|
clr->ssamp[i] = 0; |
553 |
|
else { |
554 |
|
while (wl0 + wlstep < wl+FTINY) { |
555 |
|
wl0 += wlstep; |
556 |
|
pos++; |
557 |
|
} |
558 |
< |
if (wl+FTINY >= wl0 && wl-FTINY <= wl0) |
558 |
> |
if (wl+FTINY >= wl0 & wl-FTINY <= wl0) |
559 |
|
clr->ssamp[i] = scale*va[pos]; |
560 |
|
else /* interpolate if necessary */ |
561 |
|
clr->ssamp[i] = scale / wlstep * |
564 |
|
clr->ssum += clr->ssamp[i]; |
565 |
|
} |
566 |
|
clr->flags = C_CDSPEC|C_CSSPEC; |
567 |
< |
free((MEM_PTR)va); |
567 |
> |
clr->clock++; |
568 |
|
return(MG_OK); |
569 |
|
} |
570 |
|
|
579 |
|
register int i; |
580 |
|
|
581 |
|
if ((c1->flags|c2->flags) & C_CDSPEC) { /* spectral mixing */ |
582 |
< |
c_ccvt(c1, C_CSSPEC); |
583 |
< |
c_ccvt(c2, C_CSSPEC); |
584 |
< |
w1 /= (double)c1->ssum; |
585 |
< |
w2 /= (double)c2->ssum; |
582 |
> |
c_ccvt(c1, C_CSSPEC|C_CSEFF); |
583 |
> |
c_ccvt(c2, C_CSSPEC|C_CSEFF); |
584 |
> |
w1 /= c1->eff*c1->ssum; |
585 |
> |
w2 /= c2->eff*c2->ssum; |
586 |
|
scale = 0.; |
587 |
|
for (i = 0; i < C_CNSS; i++) { |
588 |
|
cmix[i] = w1*c1->ssamp[i] + w2*c2->ssamp[i]; |