64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "$Revision: 1.2 $"
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#include <signal.h>
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#include <termio.h>
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#include <stdio.h>
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/* gsi plotting output routines */
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# define DOWN 012
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# define UP 013
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# define LEFT 010
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# define RIGHT 040
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# define BEL 007
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# define ACK 006
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# define CR 015
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# define FF 014
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# define VERTRESP 48
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# define HORZRESP 60.
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# define HORZRES 6.
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# define VERTRES 8.
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/* down is line feed, up is reverse line feed,
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left is backspace, right is space. 48 points per inch
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vertically, 60 horizontally */
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int xnow, ynow;
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struct termio ITTY, PTTY;
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int OUTF;
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float HEIGHT = 6.0, WIDTH = 6.0, OFFSET = 0.0;
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int xscale, xoffset, yscale;
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float botx = 0., boty = 0., obotx = 0., oboty = 0.;
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float scalex = 1., scaley = 1.;
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void
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openpl (void)
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{
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void reset();
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xnow = ynow = 0;
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OUTF = 1;
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printf("\r");
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ioctl(OUTF, TCGETA, &ITTY);
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signal (SIGINT, reset);
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PTTY = ITTY;
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PTTY.c_oflag &= ~(ONLCR|OCRNL|ONOCR|ONLRET);
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PTTY.c_cflag |= CSTOPB;
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ioctl(OUTF, TCSETAW, &PTTY);
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/* initialize constants */
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xscale = 4096./(HORZRESP * WIDTH);
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yscale = 4096 /(VERTRESP * HEIGHT);
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xoffset = OFFSET * HORZRESP;
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return;
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}
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void
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openvt(void)
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{
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openpl();
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}
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