--- ray/src/rt/rv3.c	1989/02/02 10:41:39	1.1
+++ ray/src/rt/rv3.c	1989/06/13 08:17:24	1.5
@@ -260,28 +260,37 @@ register VIEW  *vp;
 }
 
 
-moveview(angle, mag, vc)			/* move viewpoint */
-double  angle, mag;
+moveview(angle, elev, mag, vc)			/* move viewpoint */
+double  angle, elev, mag;
 FVECT  vc;
 {
 	extern double  sqrt(), dist2();
 	double  d;
+	FVECT  v1;
 	VIEW  nv;
 	register int  i;
 
 	VCOPY(nv.vup, ourview.vup);
 	nv.hresolu = ourview.hresolu; nv.vresolu = ourview.vresolu;
 	spinvector(nv.vdir, ourview.vdir, ourview.vup, angle*(PI/180.));
-	d = sqrt(dist2(ourview.vp, vc)) / mag;
-	for (i = 0; i < 3; i++)
-		nv.vp[i] = vc[i] - d*nv.vdir[i];
+	if (elev != 0.0) {
+		fcross(v1, ourview.vup, nv.vdir);
+		normalize(v1);
+		spinvector(nv.vdir, nv.vdir, v1, elev*(PI/180.));
+	}
 	if ((nv.type = ourview.type) == VT_PAR) {
 		nv.horiz = ourview.horiz / mag;
 		nv.vert = ourview.vert / mag;
+		d = 0.0;			/* don't move closer */
+		for (i = 0; i < 3; i++)
+			d += (vc[i] - ourview.vp[i])*ourview.vdir[i];
 	} else {
 		nv.horiz = ourview.horiz;
 		nv.vert = ourview.vert;
+		d = sqrt(dist2(ourview.vp, vc)) / mag;
 	}
+	for (i = 0; i < 3; i++)
+		nv.vp[i] = vc[i] - d*nv.vdir[i];
 	newview(&nv);
 }