using System;

namespace Science.Physics.GeneralPhysics
{
	/// <summary>
	/// Lens
	/// </summary>
	public class Lens
	{
		public Lens()
		{
		}
		private double r1, r2, f, p, q, n;
		public double Radius1
		{
			get{return r1;}
			set{r1=value;}
		}
		public double Radius2
		{
			get{return r2;}
			set{r2=value;}
		}
		public double IndexOfRefraction // after given r1, r2
		{
			get{return n;}
			set{n=value; f = 1.0/((n-1)*(1.0/r1 - 1.0/r2));}
		}
		public double FocalLength
		{
			get{return f;}
			set{f=value;}
		}
		public double ObjectDistance
		{
			get{return p;}
			set{p=value;}
		}
		public double ImageDistance
		{
			get{return q;}
			set{q=value;}
		}
		public void FindImageDistance()
		{
			q = 1.0/(1.0/f - 1.0/p);
		}
	}
}