using System;

namespace Science.Physics.GeneralPhysics
{
	/// <summary>
	/// TotalForce is given by several Forces.
	/// </summary>
	public class TotalForce : Vector
	{
		private void SetDim()
		{
			this.DimensionMass = 1;
			this.DimensionLength = 1;
			this.DimensionTime = -2;
		}
		private double fx = 0.0, fy = 0.0, fz = 0.0;
		private Force[] decomposedForce;
		private int numberOfDecomposedForces;
		public TotalForce(Force[] f1)
		{
			SetDim();
			decomposedForce = f1;
			numberOfDecomposedForces = f1.Length;			
		}
		public double N
		{
			get{FindComponent(); return Math.Sqrt(fx*fx+fy*fy+fz*fz);}
		}
		private void FindComponent()
		{
			fx = 0.0;
			fy = 0.0;
			fz = 0.0;
			for(int i = 0; i< decomposedForce.Length; i++)
			{
				fx += decomposedForce[i].X;
				fy += decomposedForce[i].Y;
				fz += decomposedForce[i].Z;
			}
		}	
		public override double X
		{
			get{FindComponent(); return fx;}
			set{fx=value;}
		}
		public override double Y
		{
			get{FindComponent(); return fy;}
			set{fy=value;}
		}
		public override double Z
		{
			get{FindComponent(); return fz;}
			set{fz=value;}
		}
		public Force[] DecomposedForce
		{
			get{return decomposedForce;}
		}
		public int NumberOfDecomposedForces
		{
			get{return numberOfDecomposedForces;}
		}
        public override string ToString()
        {
            return base.ToString() + "(N)";
        }
	}
}