open.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.1 */
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
/*
* Copyright (c) 1983, 1984 1985, 1986, 1987, 1988, Sun Microsystems, Inc.
* All Rights Reserved.
*/
#
#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();
}