1 |
< |
/* Copyright (c) 1993 Regents of the University of California */ |
1 |
> |
/* Copyright (c) 1995 Regents of the University of California */ |
2 |
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3 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
68 |
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o->otype != OBJ_SOURCE && |
69 |
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m->oargs.farg[3] <= FTINY) |
70 |
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continue; /* don't bother */ |
71 |
+ |
if (m->oargs.farg[0] <= FTINY && m->oargs.farg[1] <= FTINY && |
72 |
+ |
m->oargs.farg[2] <= FTINY) |
73 |
+ |
continue; /* don't bother */ |
74 |
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|
75 |
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if (sfun[o->otype].of == NULL || |
76 |
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sfun[o->otype].of->setsrc == NULL) |
131 |
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sr->rsrc = si->sn; /* remember source */ |
132 |
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srcp = source + si->sn; |
133 |
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if (srcp->sflags & SDISTANT) { |
134 |
< |
if (srcp->sflags & SSPOT && spotout(sr, srcp->sl.s, 1)) |
134 |
> |
if (srcp->sflags & SSPOT && spotout(sr, srcp->sl.s)) |
135 |
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continue; |
136 |
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return(1); /* sample OK */ |
137 |
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} |
141 |
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continue; |
142 |
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/* check angle */ |
143 |
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if (srcp->sflags & SSPOT) { |
144 |
< |
if (spotout(sr, srcp->sl.s, 0)) |
144 |
> |
if (spotout(sr, srcp->sl.s)) |
145 |
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continue; |
146 |
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/* adjust solid angle */ |
147 |
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si->dom *= d*d; |
155 |
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|
156 |
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|
157 |
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srcvalue(r) /* punch ray to source and compute value */ |
158 |
< |
RAY *r; |
158 |
> |
register RAY *r; |
159 |
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{ |
160 |
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register SRCREC *sp; |
161 |
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|
164 |
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/* check intersection */ |
165 |
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if (!(*ofun[sp->so->otype].funp)(sp->so, r)) |
166 |
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return; |
167 |
< |
raycont(r); /* compute contribution */ |
167 |
> |
if (!rayshade(r, r->ro->omod)) /* compute contribution */ |
168 |
> |
goto nomat; |
169 |
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return; |
170 |
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} |
171 |
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/* compute intersection */ |
173 |
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(*ofun[sp->so->otype].funp)(sp->so, r)) { |
174 |
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if (sp->sa.success >= 0) |
175 |
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sp->sa.success++; |
176 |
< |
raycont(r); /* compute contribution */ |
176 |
> |
if (!rayshade(r, r->ro->omod)) /* compute contribution */ |
177 |
> |
goto nomat; |
178 |
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return; |
179 |
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} |
180 |
+ |
/* we missed our mark! */ |
181 |
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if (sp->sa.success < 0) |
182 |
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return; /* bitched already */ |
183 |
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sp->sa.success -= AIMREQT; |
186 |
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sprintf(errmsg, "aiming failure for light source \"%s\"", |
187 |
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sp->so->oname); |
188 |
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error(WARNING, errmsg); /* issue warning */ |
189 |
+ |
return; |
190 |
+ |
nomat: |
191 |
+ |
objerror(r->ro, USER, "material not found"); |
192 |
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} |
193 |
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|
194 |
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|
327 |
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( sr.ro != source[scp->sno].so || |
328 |
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source[scp->sno].sflags & SFOLLOW )) { |
329 |
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/* follow entire path */ |
330 |
< |
raycont(&sr); |
330 |
> |
if (!raycont(&sr)) |
331 |
> |
objerror(sr.ro, USER, "material not found"); |
332 |
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if (trace != NULL) |
333 |
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(*trace)(&sr); /* trace execution */ |
334 |
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if (bright(sr.rcol) <= FTINY) |
405 |
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* (Glows with negative radii should NEVER participate in illumination.) |
406 |
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*/ |
407 |
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|
408 |
< |
#define distglow(m, r) (m->otype==MAT_GLOW && \ |
408 |
> |
#define distglow(m, r, d) (m->otype==MAT_GLOW && \ |
409 |
|
m->oargs.farg[3] >= -FTINY && \ |
410 |
< |
r->rot > m->oargs.farg[3]) |
410 |
> |
d > m->oargs.farg[3]) |
411 |
|
|
412 |
|
/* badcomponent * |
413 |
|
* |
420 |
|
|
421 |
|
#define badcomponent(m, r) (r->crtype&(AMBIENT|SPECULAR) && \ |
422 |
|
!(r->crtype&SHADOW || r->rod < 0.0 || \ |
423 |
< |
distglow(m, r))) |
423 |
> |
/* not 100% correct */ distglow(m, r, r->rot))) |
424 |
|
|
425 |
|
/* passillum * |
426 |
|
* |
438 |
|
* The -dv flag is normally on for sources to be visible. |
439 |
|
*/ |
440 |
|
|
441 |
< |
#define srcignore(m, r) (!directvis && !(r->crtype&SHADOW) && \ |
442 |
< |
!distglow(m, r)) |
441 |
> |
#define srcignore(m, r) !(directvis || r->crtype&SHADOW || \ |
442 |
> |
distglow(m, r, raydist(r,PRIMARY))) |
443 |
|
|
444 |
|
|
445 |
|
m_light(m, r) /* ray hit a light source */ |
448 |
|
{ |
449 |
|
/* check for over-counting */ |
450 |
|
if (badcomponent(m, r)) |
451 |
< |
return; |
452 |
< |
if (wrongsource(m,r)) |
453 |
< |
return; |
451 |
> |
return(1); |
452 |
> |
if (wrongsource(m, r)) |
453 |
> |
return(1); |
454 |
|
/* check for passed illum */ |
455 |
|
if (passillum(m, r)) { |
456 |
< |
if (m->oargs.nsargs < 1 || !strcmp(m->oargs.sarg[0], VOIDID)) |
457 |
< |
raytrans(r); |
458 |
< |
else |
459 |
< |
rayshade(r, modifier(m->oargs.sarg[0])); |
450 |
< |
return; |
456 |
> |
if (m->oargs.nsargs && strcmp(m->oargs.sarg[0], VOIDID)) |
457 |
> |
return(rayshade(r, modifier(m->oargs.sarg[0]))); |
458 |
> |
raytrans(r); |
459 |
> |
return(1); |
460 |
|
} |
461 |
|
/* otherwise treat as source */ |
462 |
|
/* check for behind */ |
463 |
|
if (r->rod < 0.0) |
464 |
< |
return; |
464 |
> |
return(1); |
465 |
|
/* check for invisibility */ |
466 |
|
if (srcignore(m, r)) |
467 |
< |
return; |
467 |
> |
return(1); |
468 |
|
/* check for outside spot */ |
469 |
< |
if (m->otype==MAT_SPOT && spotout(r, makespot(m), r->rot>=FHUGE)) |
470 |
< |
return; |
469 |
> |
if (m->otype==MAT_SPOT && spotout(r, makespot(m))) |
470 |
> |
return(1); |
471 |
|
/* get distribution pattern */ |
472 |
|
raytexture(r, m->omod); |
473 |
|
/* get source color */ |
476 |
|
m->oargs.farg[2]); |
477 |
|
/* modify value */ |
478 |
|
multcolor(r->rcol, r->pcol); |
479 |
+ |
return(1); |
480 |
|
} |