| 1 | /* aed.h 4.1 83/11/11 */ |
| 2 | /* |
| 3 | * Displays plot files on an AED512 graphics terminal. |
| 4 | */ |
| 5 | |
| 6 | #include <stdio.h> |
| 7 | #include <sgtty.h> |
| 8 | |
| 9 | extern char dbuf[BUFSIZ]; /* Used to buffer display characters */ |
| 10 | extern struct sgttyb sgttyb; /* Used to save terminal control bits */ |
| 11 | extern curx, cury; /* Current screen position */ |
| 12 | extern int xbot, ybot; /* Coordinates of screen lower-left corner */ |
| 13 | extern int scale; /* The number of pixels per 2**12 units |
| 14 | * of world coordinates. |
| 15 | */ |
| 16 | |
| 17 | /* The following variables describe the screen. */ |
| 18 | |
| 19 | #define GRXMAX 511 /* Maximum x-coordinate of screen */ |
| 20 | #define GRYMAX 482 /* Maximum y-coordinate of screen */ |