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Comparing ray/src/rt/ray.h (file contents):
Revision 1.2 by greg, Tue Apr 11 13:16:43 1989 UTC vs.
Revision 1.4 by greg, Sat Dec 15 16:41:44 1990 UTC

# Line 1 | Line 1
1 < /* Copyright (c) 1986 Regents of the University of California */
1 > /* Copyright (c) 1990 Regents of the University of California */
2  
3   /* SCCSid "$SunId$ LBL" */
4  
# Line 42 | Line 42 | typedef struct ray {
42          FVECT  rop;             /* intersection point */
43          FVECT  ron;             /* intersection surface normal */
44          double  rod;            /* -DOT(rdir, ron) */
45 <        double  rofx[4][4];     /* transform from object space */
46 <        double  rofs;           /* scaling factor from object */
47 <        double  robx[4][4];     /* transform back to object space */
48 <        double  robs;           /* back scaling factor */
45 >        FULLXF  *rox;           /* object transformation */
46          FVECT  pert;            /* surface normal perturbation */
47          COLOR  pcol;            /* pattern color */
48          COLOR  rcol;            /* returned ray value */
49 +        double  rt;             /* returned effective ray length */
50   }  RAY;
51  
52   extern double  raynormal();

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