namespace LensSimulatorCore.Shapes;

public struct Line
{
    public double B { get; set; }
    public double C { get; set; }

    public Line(double b, double c)
    {
        B = b;
        C = c;
    }
}

public class Point
{
    public Point(double x, double y)
    {
        X = x;
        Y = y;
    }

    public double X { get; set; }

    public double Y { get; set; }
    
    /// <summary>
    /// Converts an angle in Radians to a Vector.
    /// </summary>
    /// <param name="angle"></param>
    /// <returns></returns>
    public static Point AngleToVector(double angle)
    {
        return new(Math.Cos(-angle), Math.Sin(-angle));
    }
}

public struct PointVector
{
    public PointVector(Point point, Point vector)
    {
        Point = point;
        Vector = vector;
    }
    
    public Point Point { get; set; }
    public Point Vector { get; set; }
    
    public Line ToLine()
    {
        var angle = -Math.Atan2(this.Vector.Y, this.Vector.X);

        var b = Math.Tan(angle);
        var c = this.Point.Y - (this.Point.X * b);

        return new Line(b, c);
    }
}

/// <summary>
/// A circle as defined by (x - a)² + (y - b)² = r².
/// </summary>
//public struct Circle
//{
//    public double Radius { get; set; }
//    
//    public Point Position { get; set; }
//    
//    public Circle(double radius, Point position)
//    {
//        Radius = radius;
//        Position = position;
//    }
//}