projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| cf20af3d SL |
1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)open.c 4.1 (Berkeley) %G%"; | |
| 3 | #endif | |
| 4 | ||
| 5 | # | |
| 6 | #include <sgtty.h> | |
| 7 | /* gsi plotting output routines */ | |
| 8 | # define DOWN 012 | |
| 9 | # define UP 013 | |
| 10 | # define LEFT 010 | |
| 11 | # define RIGHT 040 | |
| 12 | # define BEL 007 | |
| 13 | # define ACK 006 | |
| 14 | # define CR 015 | |
| 15 | # define FF 014 | |
| 16 | # define VERTRESP 48 | |
| 17 | # define HORZRESP 60. | |
| 18 | # define HORZRES 6. | |
| 19 | # define VERTRES 8. | |
| 20 | /* down is line feed, up is reverse oyne feed, | |
| 21 | left is bwckspace, right is space. 48 points per inch | |
| 22 | vertically, 60 horizontally */ | |
| 23 | ||
| 24 | int xnow, ynow; | |
| 25 | int OUTF; | |
| 26 | struct sgttyb ITTY, PTTY; | |
| 27 | float HEIGHT = 6.0, WIDTH = 6.0, OFFSET = 0.0; | |
| 28 | int xscale, xoffset, yscale; | |
| 29 | float botx = 0., boty = 0., obotx = 0., oboty = 0.; | |
| 30 | float scalex = 1., scaley = 1.; | |
| 31 | ||
| 32 | openpl () | |
| 33 | { | |
| 34 | int reset(); | |
| 35 | xnow = ynow = 0; | |
| 36 | OUTF = 1; | |
| 37 | printf("\r"); | |
| 38 | gtty(OUTF, &ITTY); | |
| 39 | signal (2, reset); | |
| 40 | PTTY = ITTY; | |
| 41 | PTTY.sg_flags &= ~CRMOD; /* don't map lf */ | |
| 42 | /* initialize constants */ | |
| 43 | xscale = 4096./(HORZRESP * WIDTH); | |
| 44 | yscale = 4096 /(VERTRESP * HEIGHT); | |
| 45 | xoffset = OFFSET * HORZRESP; | |
| 46 | return; | |
| 47 | } | |
| 48 | ||
| 49 | openvt(){ | |
| 50 | openpl(); | |
| 51 | } |