using System;

namespace Science.Physics.GeneralPhysics
{
	/// <summary>
	/// AngularVelocity
	/// </summary>
	public class AngularVelocity : Vector
	{
		private void SetDim()
		{
			this.DimensionMass = 0;
			this.DimensionLength = 0;
			this.DimensionTime = -1;
		}
		public AngularVelocity()
		{
			SetDim();
		}		
		public double radPERs
		{
			get{return this.Norm;}
		}

		public AngularVelocity(AngleVector thetai, AngleVector thetaf, Time t) 
		{
			SetDim();
			this.X = (thetaf.X-thetai.X)/t.Interval;
			this.Y = (thetaf.Y-thetai.Y)/t.Interval;
			this.Z = (thetaf.Z-thetai.Z)/t.Interval;
		}
     
		public AngularVelocity(AngleVector angle, Time t) 
		{
			SetDim();

            Vector res = VectorCalculus.TimeDerivative(angle, t);

            this.X = res.X;
            this.Y = res.Y;
            this.Z = res.Z;
		}	

    	public AngularVelocity(Time tInitial, AngularVelocity oInitial, 
			AngularAcceleration a, Time tFinal) 
		{
            SetDim();

            Vector res = VectorCalculus.TimeIntegral(a, tInitial, tFinal);

            this.X = oInitial.X + res.X;
            this.Y = oInitial.Y + res.Y;
            this.Z = oInitial.Z + res.Z;
		}

        public override string ToString()
        {
            return base.ToString() + "(rad/s)";
        }
	}
}