📄 hp7221.h
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/* * Copyright (c) 1980 Regents of the University of California. * All rights reserved. The Berkeley software License Agreement * specifies the terms and conditions for redistribution. *//* @(#)hp7221.h 1.1 92/07/30 SMI; from UCB 5.1 5/7/85 *//* * Displays plot files on an HP7221 plotter. * Cloned from bgplot.c and gigiplot.c by Jim Kleckner * Thu Jun 30 13:35:04 PDT 1983 * Requires a handshaking program such as hp7221cat to get * the plotter open and ready. */#include <stdio.h>#include <math.h>#define ESC 033#define PI 3.141592659#define ENDOFSTRING 03/* The graphics address range is 0..XMAX, 0..YMAX. */#define XMAX 1800#define YMAX 1800#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;
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