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/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "aed.h"
/*---------------------------------------------------------
* Space sets up the world-to-screen transformation so
* that the rectangular area described by (x0, y0) and
* (x1, y1) will all be on-screen.
*
* Results: None.
*
* Side Effects:
* Our own variables scale, xbot, and ybot are changed.
*---------------------------------------------------------
*/
void
space(int x0, int y0, int x1, int y1)
{
int xscale, yscale, xsize, ysize;
xscale = (GRXMAX<<12)/(x1-x0);
yscale = (GRYMAX<<12)/(y1-y0);
if (xscale > yscale) scale = yscale;
else scale = xscale;
scale = (scale*9)/10 - 1;
if (scale<1) scale = 1;
xsize = (2048*GRXMAX)/scale + 1;
xbot = (x1+x0)/2 - xsize;
ysize = (2048*GRYMAX)/scale + 1;
ybot = (y1+y0)/2 - ysize;
}
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