--- ray/src/ot/o_instance.c	1990/12/15 19:55:05	1.6
+++ ray/src/ot/o_instance.c	1991/01/05 09:41:26	1.7
@@ -1,4 +1,4 @@
-/* Copyright (c) 1990 Regents of the University of California */
+/* Copyright (c) 1991 Regents of the University of California */
 
 #ifndef lint
 static char SCCSid[] = "$SunId$ LBL";
@@ -56,8 +56,8 @@ CUBE  *cu;
 	in = getinstance(o, IO_BOUNDS);
 					/* check if cube vertex in octree */
 	for (j = 0; j < 3; j++)
-		cumax[j] = (cumin[j] = cu->cuorg[j]-FTINY)
-				+ cu->cusize + 2.0*FTINY;
+		cumax[j] = (cumin[j] = in->obj->scube.cuorg[j]) +
+				in->obj->scube.cusize;
 	vloc = ABOVE | BELOW;
 	vout = 0;
 	for (i = 0; i < 8; i++) {