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

/*-
 * Copyright (c) 1985, 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 */

#include "imp.h"
#include "imPcodes.h"
float obotx = 0.;
float oboty = 0.;
float botx = 2.;
float boty = 2.;
float scalex = 1.;
float scaley = 1.;
line(x0,y0,x1,y1)
{
	putch(imP_CREATE_PATH);
	putwd(2);		/* two coordinates follow */
	putwd((int)((x0-obotx)*scalex+botx));	
	putwd((int)((y0-oboty)*scaley+boty));	
	putwd((int)((x1-obotx)*scalex+botx));	
	putwd((int)((y1-oboty)*scaley+boty));	
	putch(imP_DRAW_PATH);
	putch(15);		/* "black" lines */
	imPx = x1;
	imPy = y1;
}
putch(c)
{
	putc(c, stdout);
}
putwd(w)
{
	putch(w>>8);
	putch(w);
}