open.c

Functions

openpl            X
openvt            X

Variables

HEIGHT            X
ITTY              X
OUTF              X
PTTY              X
botx              X
scalex            X
xnow              X
xoffset           X
xscale            X
ynow              X
yscale            X

Macros

ACK               X
BEL               X
CR                X
DOWN              X
FF                X
HORZRES           X
HORZRESP          X
LEFT              X
PLOTIN            X
PLOTOUT           X
RIGHT             X
UP                X
VERTRES           X
VERTRESP          X

   1: #ifndef lint
   2: static char sccsid[] = "@(#)open.c	4.1 (Berkeley) 6/27/83";
   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 PLOTIN 063
  15: #define PLOTOUT 064
  16: # define CR 015
  17: # define FF 014
  18: # define VERTRESP 48
  19: # define HORZRESP 60.
  20: # define HORZRES 6.
  21: # define VERTRES 8.
  22: /* down is line feed, up is reverse oyne feed,
  23:    left is bwckspace, right is space.  48 points per inch
  24:    vertically, 60 horizontally */
  25: 
  26: int xnow, ynow;
  27: int OUTF;
  28: struct sgttyb ITTY, PTTY;
  29: float HEIGHT = 6.0, WIDTH = 6.0, OFFSET = 0.0;
  30: int xscale, xoffset, yscale;
  31: float botx = 0., boty = 0., obotx = 0., oboty = 0.;
  32: float scalex = 1., scaley = 1.;
  33: 
  34: openpl ()
  35: {
  36:     int reset();
  37:         xnow = ynow = 0;
  38:         OUTF = 1;
  39:         printf("\r");
  40:         gtty(OUTF, &ITTY);
  41:         signal (2, reset);
  42:         PTTY = ITTY;
  43:         PTTY.sg_flags &= ~CRMOD;    /* don't map lf */
  44:         stty(OUTF,&PTTY);
  45:         /* initialize constants */
  46:         xscale  = 4096./(HORZRESP * WIDTH);
  47:         yscale = 4096 /(VERTRESP * HEIGHT);
  48:         xoffset = OFFSET * HORZRESP;
  49:         return;
  50: }
  51: 
  52: openvt(){
  53: openpl();
  54: }