/*-
 * Copyright (c) 1980, 1986, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * %sccs.include.proprietary.c%
 */

#ifndef lint
static char sccsid[] = "@(#)arc.c	8.1 (Berkeley) 06/04/93";
#endif /* not lint */

#include "grnplot.h"

arc(x,y,x0,y0,x1,y1)
{
	extern double atan2();

	if (!ingrnfile) erase();
	endvector();
	printf("ARC\n");
	outxy(x,y);
	outxy(x0,y0);
	outxy(x1,y1);
	printf("*\n%d %d\n0\n",
	    linestyle,(int) (atan2(x1-x,y1-y)-atan2(x0-x,y0-y)));
	curx =x;
	cury =y;
}