* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
static char sccsid
[] = "@(#)space.c 5.2 (Berkeley) 4/30/85";
/*---------------------------------------------------------
* 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.
* Our own variables scale, xbot, and ybot are changed.
*---------------------------------------------------------
int xscale
, yscale
, xsize
, ysize
;
xscale
= (GRXMAX
<<12)/(x1
-x0
);
yscale
= (GRYMAX
<<12)/(y1
-y0
);
if (xscale
> yscale
) scale
= yscale
;
scale
= (scale
*9)/10 - 1;
xsize
= (2048*GRXMAX
)/scale
+ 1;
xbot
= (x1
+x0
)/2 - xsize
;
ysize
= (2048*GRYMAX
)/scale
+ 1;
ybot
= (y1
+y0
)/2 - ysize
;