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root/Development/ray/src/rt/rv3.c

Comparing ray/src/rt/rv3.c (file contents):
Revision 1.3 by greg, Wed May 24 13:55:54 1989 UTC vs.
Revision 1.5 by greg, Tue Jun 13 08:17:24 1989 UTC

#	Line 260 | Line 260 | register VIEW  *vp;
260		}
261
262
263	<	moveview(angle, mag, vc)                        /* move viewpoint */
264	<	double  angle, mag;
263	>	moveview(angle, elev, mag, vc)                  /* move viewpoint */
264	>	double  angle, elev, mag;
265		FVECT  vc;
266		{
267		extern double  sqrt(), dist2();
268		double  d;
269	+	FVECT  v1;
270		VIEW  nv;
271		register int  i;
272
273		VCOPY(nv.vup, ourview.vup);
274		nv.hresolu = ourview.hresolu; nv.vresolu = ourview.vresolu;
275		spinvector(nv.vdir, ourview.vdir, ourview.vup, angle*(PI/180.));
276	+	if (elev != 0.0) {
277	+	fcross(v1, ourview.vup, nv.vdir);
278	+	normalize(v1);
279	+	spinvector(nv.vdir, nv.vdir, v1, elev*(PI/180.));
280	+	}
281		if ((nv.type = ourview.type) == VT_PAR) {
282		nv.horiz = ourview.horiz / mag;
283		nv.vert = ourview.vert / mag;

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