4.4BSD/usr/src/lib/libplot/vt0/line.c

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/*-
 * Copyright (c) 1983, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This module is believed to contain source code proprietary to AT&T.
 * Use and redistribution is subject to the Berkeley Software License
 * Agreement and your Software Agreement with AT&T (Western Electric).
 */

#ifndef lint
static char sccsid[] = "@(#)line.c	8.1 (Berkeley) 6/4/93";
#endif /* not lint */

extern vti;
extern xnow,ynow;
line(x0,y0,x1,y1){
	struct{char x,c; int x0,y0,x1,y1;} p;
	p.c = 3;
	p.x0 = xsc(x0);
	p.y0 = ysc(y0);
	p.x1 = xnow = xsc(x1);
	p.y1 = ynow = ysc(y1);
	write(vti,&p.c,9);
}
cont(x0,y0){
	line(xnow,ynow,xsc(x0),ysc(y0));
	return;
}