Subversion Repositories planix.SVN

#include "mplot.h"
void frame(double xs, double ys, double xf, double yf){
        register double osidex, osidey;
        osidex = e1->sidex;
        osidey = e1->sidey;
        e1->left = e0->left + xs * e0->sidex;
        e1->bottom = e0->bottom + ys * e0->sidey;
        e1->sidex = (xf-xs)*e0->sidex;
        e1->sidey = (yf-ys)*e0->sidey;
        e1->scalex *= (e1->sidex / osidex);
        e1->scaley *= (e1->sidey / osidey);
        e1->quantum=e0->quantum/sqrt(e1->scalex*e1->scalex +
                e1->scaley*e1->scaley);
        if(e1->quantum < .01)
                e1->quantum = .01;
}