4.4BSD/usr/src/lib/libplot/bitgraph/bg.h
/*-
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* This module is believed to contain source code proprietary to AT&T.
* Use and redistribution is subject to the Berkeley Software License
* Agreement and your Software Agreement with AT&T (Western Electric).
*
* @(#)bg.h 8.1 (Berkeley) 6/4/93
*/
/*
* Displays plot files on a bbn bitgraph terminal.
*/
#include <stdio.h>
#include <math.h>
#define ESC 033
#define PI 3.141592659
/* The graphics address range is 0..XMAX, 0..YMAX. */
#define XMAX 768
#define YMAX 1024
#define scaleX(xi) ((int) ((xi - lowx)*scale +0.5))
#define scaleY(yi) ((int) ((yi - lowy)*scale +0.5))
extern int currentx;
extern int currenty;
extern double lowx;
extern double lowy;
extern double scale;