using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using V = Science.Mathematics.VectorCalculus;

namespace VectorCalculus5Ed.Chapter5.Section5
{
    public class Example06
    {
        public Example06()
		{
		}
		private string result;
		public string Result
		{
			get{return result;}
		}
        public void Compute()
        {
            Science.Mathematics.Function.ToLastType<double[], double> f
                = new Science.Mathematics.Function.ToLastType<double[], double>(func);
            double[] from = { 0.0, 0.0, 0.0 };
            double[] to = { 1.0, 1.0, 2.0 };
            V.IntegrationMultiD obj = new V.IntegrationMultiD(f, from, to);
            obj.Compute();
            result += obj.BestEstimation.ToString() + "\r\n";
            obj.NumberOfCall = 10000000;
            obj.Compute();
            result += obj.BestEstimation.ToString() + "\r\n";
            double a = 2.0 / 3.0;
            result += a.ToString() + "\r\n";
        }
        private double func(double[] x)
        {
            if (x[1] > x[0]) return 0.0;
            else if (x[0] * x[0] + x[1] * x[1] > x[2]) return 0.0;
            else return 1.0;
        }
    }
}
/* 
0.666524834543227
0.666666053989398
0.666666666666667
*/