--- ray/src/rt/raytrace.c	1993/05/25 10:30:01	2.6
+++ ray/src/rt/raytrace.c	1993/12/09 09:34:08	2.8
@@ -105,7 +105,8 @@ RAY  *r;
 raycont(r)			/* check for clipped object and continue */
 register RAY  *r;
 {
-	if (r->clipset != NULL && inset(r->clipset, r->ro->omod))
+	if ((r->clipset != NULL && inset(r->clipset, r->ro->omod)) ||
+			r->ro->omod == OVOID)
 		raytrans(r);
 	else
 		rayshade(r, r->ro->omod);
@@ -330,9 +331,9 @@ register CUBE  *scene;
 	sflags = 0;
 	for (i = 0; i < 3; i++) {
 		curpos[i] = r->rorg[i];
-		if (r->rdir[i] > FTINY)
+		if (r->rdir[i] > 1e-7)
 			sflags |= 1 << i;
-		else if (r->rdir[i] < -FTINY)
+		else if (r->rdir[i] < -1e-7)
 			sflags |= 0x10 << i;
 	}
 	if (sflags == 0)
@@ -463,8 +464,6 @@ OBJECT  *cxs;
 	checkset(oset, cxs);			/* eliminate double-checking */
 	for (i = oset[0]; i > 0; i--) {
 		o = objptr(oset[i]);
-		if (o->omod == OVOID && issurface(o->otype))
-			continue;		/* ignore void surfaces */
 		(*ofun[o->otype].funp)(o, r);
 	}
 	if (r->ro == NULL)