1 /*- 2 * Copyright (c) 1983 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.proprietary.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)open.c 4.2 (Berkeley) 04/22/91"; 10 #endif /* not lint */ 11 12 #include <sgtty.h> 13 /* gsi plotting output routines */ 14 # define DOWN 012 15 # define UP 013 16 # define LEFT 010 17 # define RIGHT 040 18 # define BEL 007 19 # define ACK 006 20 #define PLOTIN 063 21 #define PLOTOUT 064 22 # define CR 015 23 # define FF 014 24 # define VERTRESP 48 25 # define HORZRESP 60. 26 # define HORZRES 6. 27 # define VERTRES 8. 28 /* down is line feed, up is reverse oyne feed, 29 left is bwckspace, right is space. 48 points per inch 30 vertically, 60 horizontally */ 31 32 int xnow, ynow; 33 int OUTF; 34 struct sgttyb ITTY, PTTY; 35 float HEIGHT = 6.0, WIDTH = 6.0, OFFSET = 0.0; 36 int xscale, xoffset, yscale; 37 float botx = 0., boty = 0., obotx = 0., oboty = 0.; 38 float scalex = 1., scaley = 1.; 39 40 openpl () 41 { 42 int reset(); 43 xnow = ynow = 0; 44 OUTF = 1; 45 printf("\r"); 46 gtty(OUTF, &ITTY); 47 signal (2, reset); 48 PTTY = ITTY; 49 PTTY.sg_flags &= ~CRMOD; /* don't map lf */ 50 stty(OUTF,&PTTY); 51 /* initialize constants */ 52 xscale = 4096./(HORZRESP * WIDTH); 53 yscale = 4096 /(VERTRESP * HEIGHT); 54 xoffset = OFFSET * HORZRESP; 55 return; 56 } 57 58 openvt(){ 59 openpl(); 60 } 61