usr/src/lib/libplot/vt0/subr.c

#ifndef lint
static char sccsid[] = "@(#)subr.c      4.1 (Berkeley) %G%";
#endif

extern float obotx;
extern float oboty;
extern float boty;
extern float botx;
extern float scalex;
extern float scaley;
xsc(xi){
        int xa;
        xa = (xi-obotx)*scalex+botx;
        return(xa);
}
ysc(yi){
        int ya;
        ya = (yi-oboty)*scaley+boty;
        return(ya);
}