1 /* bg.h 4.1 83/11/10 */ 2 /* 3 * Displays plot files on a bbn bitgraph terminal. 4 */ 5 6 #include <stdio.h> 7 #include <math.h> 8 9 #define ESC 033 10 #define PI 3.141592659 11 12 /* The graphics address range is 0..XMAX, 0..YMAX. */ 13 #define XMAX 768 14 #define YMAX 1024 15 #define scaleX(xi) ((int) ((xi - lowx)*scale +0.5)) 16 #define scaleY(yi) ((int) ((yi - lowy)*scale +0.5)) 17 18 extern int currentx; 19 extern int currenty; 20 extern double lowx; 21 extern double lowy; 22 extern double scale; 23