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

Comparing ray/src/rt/srcsupp.c (file contents):
Revision 2.5 by greg, Fri Aug 28 14:07:45 1992 UTC vs.
Revision 2.6 by greg, Fri Aug 28 15:10:47 1992 UTC

# Line 496 | Line 496 | double  r1s, r2s;              /* radii squared */
496                  cc[i] = c1[i] + l*disp[i];
497          return(a2);
498   }
499 –
500 –
501 – sourcehit(r)                    /* check to see if ray hit distant source */
502 – register RAY  *r;
503 – {
504 –        int  first, last;
505 –        register int  i;
506 –
507 –        if (r->rsrc >= 0) {             /* check only one if aimed */
508 –                first = last = r->rsrc;
509 –        } else {                        /* otherwise check all */
510 –                first = 0; last = nsources-1;
511 –        }
512 –        for (i = first; i <= last; i++)
513 –                if ((source[i].sflags & (SDISTANT|SVIRTUAL)) == SDISTANT)
514 –                        /*
515 –                         * Check to see if ray is within
516 –                         * solid angle of source.
517 –                         */
518 –                        if (2.0*PI * (1.0 - DOT(source[i].sloc,r->rdir))
519 –                                        <= source[i].ss2) {
520 –                                r->ro = source[i].so;
521 –                                if (!(source[i].sflags & SSKIP))
522 –                                        break;
523 –                        }
524 –
525 –        if (r->ro != NULL) {
526 –                for (i = 0; i < 3; i++)
527 –                        r->ron[i] = -r->rdir[i];
528 –                r->rod = 1.0;
529 –                r->rox = NULL;
530 –                return(1);
531 –        }
532 –        return(0);
533 – }

Diff Legend

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