source: branches/HeuristicLab.Analysis.AlgorithmBehavior/HeuristicLab.Analysis.AlgorithmBehavior.Analyzers/3.3/LiblrsWrapper.cs @ 10200

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;

namespace HeuristicLab.Analysis.AlgorithmBehavior.Analyzers {
  public static class LiblrsWrapper {
    public static double CalculateVolume(List<double[]> points) {
      double result = 0.0;
      int dimension = points.First().Length;
      int numPoints = points.Count();

      Int32[] num = new Int32[dimension * numPoints];
      Int32[] den = new Int32[dimension * numPoints];

      for (int i = 0; i < numPoints; i++) {
        for (int j = 0; j < dimension; j++) {
          var fraction = new Fraction(points[i][j]);
          //TODO: fix possible overflow
          num[i * dimension + j] = (int)fraction.Numerator;
          den[i * dimension + j] = (int)fraction.Denominator;
        }
      }
      result = calculate_volume(numPoints, dimension, num, den);
      return result;
    }

    [System.Runtime.InteropServices.DllImportAttribute("liblrs.dll", EntryPoint = "calculate_volume")]
    public static extern double calculate_volume(int numPoints, int dimension, [In] Int32[] num, [In] Int32[] den);
  }
}