1 /*- 2 * Copyright (c) 1980 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.proprietary.c% 6 * 7 * @(#)bg.h 5.2 (Berkeley) 04/22/91 8 */ 9 10 /* 11 * Displays plot files on a bbn bitgraph terminal. 12 */ 13 14 #include <stdio.h> 15 #include <math.h> 16 17 #define ESC 033 18 #define PI 3.141592659 19 20 /* The graphics address range is 0..XMAX, 0..YMAX. */ 21 #define XMAX 768 22 #define YMAX 1024 23 #define scaleX(xi) ((int) ((xi - lowx)*scale +0.5)) 24 #define scaleY(yi) ((int) ((yi - lowy)*scale +0.5)) 25 26 extern int currentx; 27 extern int currenty; 28 extern double lowx; 29 extern double lowy; 30 extern double scale; 31