usr/src/lib/libplot/gigi/gigi.h

/*      gigi.h  4.1     83/11/10        */
/*
 * Displays plot files on a gigi "graphics" terminal.
 */

#include <stdio.h>
#include <math.h>

#define ESC     033
#define PI      3.141592659

/*
 * The graphics address range is 0..XMAX, YMAX..0 where (0, YMAX) is the
 * lower left corner.
 */
#define XMAX    767
#define YMAX    479
#define xsc(xi) ((int) ((xi -lowx)*scalex +0.5))
#define ysc(yi) ((int) (YMAX - (yi - lowy)*scaley +0.5))

extern int currentx;
extern int currenty;
extern double lowx;
extern double lowy;
extern double scalex;
extern double scaley;