// scale transform
// ax + b
//
//
// Author:      Alexander Bogomolny, CTK Software, Inc.
// URL:         http://www.cut-the-knot.com
// Date:        November 30, 2000
// Copyright:   A. Bogomolny
//              Permission to use and modify the file is therefore granted
//              as long as this comment remains unchanged. Do this at your
//              own risk.
//
class Scale
{
    double a;
    double b;

    public Scale(double a, double b)
    {
        this.a = a;
        this.b = b;
    }

    public double Do(double x)
    {
        return a*x + b;
    }

    public double Reverse(double x)
    {
        return (x - b)/a;
    }

    public Scale Inverse()
    {
        return new Scale(1/a, -b/a);
    }
}

// scale transform
// ax + b
//
//
// Author:      Alexander Bogomolny, CTK Software, Inc.
// URL:         http://www.cut-the-knot.com
// Date:        November 30, 2000
// Copyright:   A. Bogomolny
//              Permission to use and modify the file is therefore granted
//              as long as this comment remains unchanged. Do this at your
//              own risk.
//
class Scale
{
    double a;
    double b;

    public Scale(double a, double b)
    {
        this.a = a;
        this.b = b;
    }

    public double Do(double x)
    {
        return a*x + b;
    }

    public double Reverse(double x)
    {
        return (x - b)/a;
    }

    public Scale Inverse()
    {
        return new Scale(1/a, -b/a);
    }
}