--- ray/src/util/rad.c	1993/09/24 16:49:02	2.26
+++ ray/src/util/rad.c	1993/10/28 11:48:29	2.28
@@ -437,9 +437,13 @@ int	pred;
 	register int	n;
 	int	suffix;
 
-	suffix = n = strlen(orig);		/* find start of suffix */
-	if ((cp = rindex(orig, '.')) != NULL)
-		suffix = cp - orig;
+	n = 0; cp = orig; suffix = -1;		/* suffix position, length */
+	while (*cp) {
+		if (*cp == '.') suffix = n;
+		else if (ISDIRSEP(*cp)) suffix = -1;
+		cp++; n++;
+	}
+	if (suffix == -1) suffix = n;
 	if ((cp = bmalloc(n+2)) == NULL)
 		syserr(progname);
 	strncpy(cp, orig, suffix);
@@ -828,7 +832,7 @@ register char	*op;
 	}
 	op = addarg(op, "-pt .08");
 	if (vbool(PENUMBRAS))
-		op = addarg(op, "-ds .2 -dj .35");
+		op = addarg(op, "-ds .2 -dj .5");
 	else
 		op = addarg(op, "-ds .3");
 	op = addarg(op, "-dt .1 -dc .5 -dr 1 -sj .7 -st .1");