--- ray/src/hd/rhd_odraw.c	1998/12/23 21:49:43	3.7
+++ ray/src/hd/rhd_odraw.c	1998/12/24 16:18:45	3.10
@@ -466,12 +466,7 @@ int	vn;
 			CLR4(odS.redraw, i);
 		}
 #else
-					/* redraw samples at each end */
-	for (i = odView[vn].sfirst; i < odView[vn].sfirst+31; i++)
-		if (CHK4(odS.redraw, i)) {
-			odDrawSamp(vn, i);
-			CLR4(odS.redraw, i);
-		}
+					/* redraw samples at end */
 	for (i = odView[vn].snext-31; i < odView[vn].snext; i++)
 		if (CHK4(odS.redraw, i)) {
 			odDrawSamp(vn, i);
@@ -484,6 +479,12 @@ int	vn;
 				odDrawSamp(vn, (j<<5)+i);
 				odS.redraw[j] &= ~(1L<<i);
 			}
+					/* redraw samples at beginning */
+	for (i = odView[vn].sfirst; i < odView[vn].sfirst+31; i++)
+		if (CHK4(odS.redraw, i)) {
+			odDrawSamp(vn, i);
+			CLR4(odS.redraw, i);
+		}
 #endif
 }
 
@@ -530,7 +531,7 @@ double	sz;
 	register int	i;
 
 	DCHECK(sz > 1, CONSISTENCY, "super-unary size in make_arms");
-	na = MAXFAN*sz*sz + 0.5;		/* keep area constant */
+	na = MAXFAN*sz + 0.5;			/* keep arc length constant */
 	if (na < MINFAN) na = MINFAN;
 	hrad = FANSIZE*sz*vp->hhi/vp->hlow;
 	vrad = FANSIZE*sz*vp->vhi/vp->vlow;
@@ -628,10 +629,12 @@ blockedge(vp, bi0, bi1)			/* check for edge between bl
 register struct ODview	*vp;
 register int	bi0, bi1;
 {
+	if (bi1 == bi0)
+		return(0);		/* same block */
 	if (bi1 < 0)
 		return(1);		/* end off view */
 	if (CHK4(vp->emap, bi1))
-		return(1);		/* end has edges */
+		return(1);		/* end block has edges */
 	if (bi1 == bi0+1 || bi1 == bi0-1 ||
 			bi1 == bi0+vp->hlow || bi1 == bi0-vp->hlow)
 		return(0);		/* end in adjacent block -- no edges */