namespace DispenserCommon.Utils;

public class LineEquationUtil
{
    public static double CalculateX(LineEquation lineEquation, double y)
    {
        return lineEquation.CalculateXCoordinate(y);
    }

    public static double CalculateY(LineEquation lineEquation, double x)
    {
        return lineEquation.CalculateYCoordinate(x);
    }

    public static LineEquation CreateLineEquation(double x1, double y1, double x2, double y2)
    {
        return new LineEquation(x1, y1, x2, y2);
    }

    public class LineEquation
    {
        public LineEquation(double x1, double y1, double x2, double y2)
        {
            CalculateSlopeAndIntercept(x1, y1, x2, y2);
        }

        public double Slope { get; private set; }
        public double Intercept { get; private set; }

        private void CalculateSlopeAndIntercept(double x1, double y1, double x2, double y2)
        {
            Slope = (y2 - y1) / (x2 - x1);
            Intercept = y1 - Slope * x1;
        }

        public double CalculateXCoordinate(double y)
        {
            return (y - Intercept) / Slope;
        }

        public double CalculateYCoordinate(double x)
        {
            return Slope * x + Intercept;
        }
    }
}