source: trunk/sources/HeuristicLab.Problems.TravelingSalesman/3.3/MoveEvaluators/ThreeOptMoveTSPRoundedEuclideanPathEvaluator.cs @ 3200

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2010 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 HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Encodings.PermutationEncoding;
using HeuristicLab.Operators;
using HeuristicLab.Parameters;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using System;

namespace HeuristicLab.Problems.TravelingSalesman {
  /// <summary>
  /// An operator to evaluate 3-opt moves.
  /// </summary>
  [Item("ThreeOptMoveTSPRoundedEuclideanPathEvaluator", "Evaluates a 3-opt move (rounded euclidean distances) by summing up the length of all added edges and subtracting the length of all deleted edges.")]
  [StorableClass]
  public class ThreeOptMoveTSPRoundedEuclideanPathEvaluator : ThreeOptMoveTSPCoordinatesPathEvaluator {
    protected override double CalculateDistance(double x1, double y1, double x2, double y2) {
      return Math.Round(Math.Sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2)));
    }
  }
}