ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/rt/raytrace.c
(Generate patch)

Comparing ray/src/rt/raytrace.c (file contents):
Revision 2.82 by greg, Mon Jan 4 19:07:15 2021 UTC vs.
Revision 2.84 by greg, Sun Jan 31 20:55:04 2021 UTC

# Line 517 | Line 517 | flipsurface(                   /* reverse surface orientation */
517   }
518  
519  
520 + int
521 + rayreject(              /* check if candidate hit is worse than current */
522 +        OBJREC *o,
523 +        RAY *r,
524 +        double t
525 + )
526 + {
527 +        OBJREC  *mnew, *mray;
528 +
529 +        if ((t <= FTINY) | (t > r->rot + FTINY))
530 +                return(1);
531 +        if (t < r->rot - FTINY)         /* is new hit significantly closer? */
532 +                return(0);
533 +                                        /* coincident point, so decide... */
534 +        if (o == r->ro)
535 +                return(1);              /* shouldn't happen */
536 +        if (r->ro == NULL)
537 +                return(0);              /* ditto */
538 +        if ((mnew = findmaterial(o)) == NULL)
539 +                return(1);              /* new has no material */
540 +        if ((mray = findmaterial(r->ro)) == NULL)
541 +                return(0);              /* old has no material(!) */
542 +        if (istransp(mnew->otype))
543 +                return(1);              /* new is transparent */
544 +        if (istransp(mray->otype))
545 +                return(0);              /* old is transparent */
546 +                        /* weakest priority to later modifier definition */
547 +        return (r->ro->omod >= o->omod);
548 + }
549 +
550   void
551   rayhit(                 /* standard ray hit test */
552          OBJECT  *oset,

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines