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root/radiance/ray/src/common/face.c
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Comparing ray/src/common/face.c (file contents):
Revision 2.3 by greg, Fri May 14 13:42:53 1993 UTC vs.
Revision 2.5 by greg, Fri Mar 22 09:01:16 1996 UTC

# Line 1 | Line 1
1 < /* Copyright (c) 1991 Regents of the University of California */
1 > /* Copyright (c) 1995 Regents of the University of California */
2  
3   #ifndef lint
4   static char SCCSid[] = "$SunId$ LBL";
# Line 58 | Line 58 | OBJREC  *o;
58  
59          f->va = o->oargs.farg;
60          f->nv = o->oargs.nfargs / 3;
61 +                                                /* check for last==first */
62 +        if (dist2(VERTEX(f,0),VERTEX(f,f->nv-1)) <= FTINY*FTINY)
63 +                f->nv--;
64                                                  /* compute area and normal */
65          f->norm[0] = f->norm[1] = f->norm[2] = 0.0;
66 <        v1[0] = v1[1] = v1[2] = 0.0;
67 <        for (i = 1; i < f->nv; i++) {
66 >        v1[0] = VERTEX(f,1)[0] - VERTEX(f,0)[0];
67 >        v1[1] = VERTEX(f,1)[1] - VERTEX(f,0)[1];
68 >        v1[2] = VERTEX(f,1)[2] - VERTEX(f,0)[2];
69 >        for (i = 2; i < f->nv; i++) {
70                  v2[0] = VERTEX(f,i)[0] - VERTEX(f,0)[0];
71                  v2[1] = VERTEX(f,i)[1] - VERTEX(f,0)[1];
72                  v2[2] = VERTEX(f,i)[2] - VERTEX(f,0)[2];

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