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source: branches/VRP/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/General/TourEncoding.cs @ 4899

Last change on this file since 4899 was 4899, checked in by svonolfe, 13 years ago

Improved performance (#1177)

File size: 3.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Data;
25using HeuristicLab.Encodings.PermutationEncoding;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27using System.Drawing;
28using System.Collections.Generic;
29using HeuristicLab.Problems.VehicleRouting.Interfaces;
30
31namespace HeuristicLab.Problems.VehicleRouting.Encodings.General {
32  [Item("TourEncoding", "Represents a base class for tour encodings of VRP solutions.")]
33  [StorableClass]
34  public abstract class TourEncoding : Item, IVRPEncoding {
35    public override Image ItemImage {
36      get { return HeuristicLab.Common.Resources.VS2008ImageLibrary.Class; }
37    }
38   
39    #region IVRPEncoding Members
40    public virtual List<Tour> GetTours() {
41      List<Tour> result = new List<Tour>(Tours);
42
43     while (result.Count > ProblemInstance.Vehicles.Value) {
44        Tour tour = result[result.Count - 1];
45        result[result.Count - 2].Stops.AddRange(tour.Stops);
46
47        result.Remove(tour);
48      }   
49
50      return result;
51    }
52
53    public int Cities {
54      get
55      {
56        int cities = 0;
57
58        foreach (Tour tour in Tours) {
59          cities += tour.Stops.Count;
60        }
61
62        return cities;
63      }
64    }
65    #endregion
66
67    [Storable]
68    public ItemList<Tour> Tours { get; set; }
69
70    [Storable]
71    protected IVRPProblemInstance ProblemInstance { get; set; }
72
73    public TourEncoding(IVRPProblemInstance problemInstance) {
74      Tours = new ItemList<Tour>();
75
76      ProblemInstance = problemInstance;
77    }
78
79    [StorableConstructor]
80    protected TourEncoding(bool serializing)
81      : base(serializing) {
82    }
83
84    protected TourEncoding(TourEncoding original, Cloner cloner)
85      : base(original, cloner) {
86       this.Tours = (ItemList<Tour>)cloner.Clone(original.Tours);
87       this.ProblemInstance = original.ProblemInstance;
88    }
89
90    public static void ConvertFrom(IVRPEncoding encoding, TourEncoding solution, IVRPProblemInstance problemInstance) {
91      solution.Tours = new ItemList<Tour>(encoding.GetTours());
92    }
93
94    public static void ConvertFrom(List<int> route, TourEncoding solution) {
95      solution.Tours = new ItemList<Tour>();
96
97      Tour tour = new Tour();
98      for (int i = 0; i < route.Count; i++) {
99        if (route[i] == 0) {
100          if (tour.Stops.Count > 0) {
101            solution.Tours.Add(tour);
102            tour = new Tour();
103          }
104        } else {
105          tour.Stops.Add(route[i]);
106        }
107      }
108    }
109  }
110}
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