usr/src/lib/libplot/t300/open.c

/*-
 * 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[] = "@(#)open.c      8.1 (Berkeley) 6/4/93";
#endif /* not lint */

#include <sgtty.h>
/* gsi plotting output routines */
# define DOWN 012
# define UP 013
# define LEFT 010
# define RIGHT 040
# define BEL 007
# define ACK 006
# define CR 015
# define FF 014
# define VERTRESP 48
# define HORZRESP 60.
# define HORZRES 6.
# define VERTRES 8.
/* down is line feed, up is reverse oyne feed,
   left is bwckspace, right is space.  48 points per inch
   vertically, 60 horizontally */

int xnow, ynow;
int OUTF;
struct sgttyb ITTY, PTTY;
float HEIGHT = 6.0, WIDTH = 6.0, OFFSET = 0.0;
int xscale, xoffset, yscale;
float botx = 0., boty = 0., obotx = 0., oboty = 0.;
float scalex = 1., scaley = 1.;

openpl ()
{
        int reset();
                xnow = ynow = 0;
                OUTF = 1;
                printf("\r");
                gtty(OUTF, &ITTY);
                signal (2, reset);
                PTTY = ITTY;
                PTTY.sg_flags &= ~CRMOD;        /* don't map lf */
                /* initialize constants */
                xscale  = 4096./(HORZRESP * WIDTH);
                yscale = 4096 /(VERTRESP * HEIGHT);
                xoffset = OFFSET * HORZRESP;
                return;
}

openvt(){
openpl();
}