--- ray/src/rt/ray.h	1989/02/02 10:41:14	1.1
+++ ray/src/rt/ray.h	1990/03/22 20:07:01	1.3
@@ -42,10 +42,14 @@ typedef struct ray {
 	FVECT  rop;		/* intersection point */
 	FVECT  ron;		/* intersection surface normal */
 	double  rod;		/* -DOT(rdir, ron) */
-	double  ros, rox[4][4];	/* transform back to object space */
+	double  rofx[4][4];	/* transform from object space */
+	double  rofs;		/* scaling factor from object */
+	double  robx[4][4];	/* transform back to object space */
+	double  robs;		/* back scaling factor */
 	FVECT  pert;		/* surface normal perturbation */
 	COLOR  pcol;		/* pattern color */
 	COLOR  rcol;		/* returned ray value */
+	double  rt;		/* returned effective ray length */
 }  RAY;
 
 extern double  raynormal();