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source: branches/HeuristicLab.BinPacking/HeuristicLab.Problems.BinPacking.2D/3.3/PermutationEncoding/PermutationProblem.cs @ 14154

Last change on this file since 14154 was 14154, checked in by gkronber, 8 years ago

#1966: refactoring

File size: 3.3 KB
Line 
1#region License Information
2
3/* HeuristicLab
4 * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
5 *
6 * This file is part of HeuristicLab.
7 *
8 * HeuristicLab is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * HeuristicLab is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22#endregion
23
24using System.Linq;
25using System.Windows.Forms;
26using HeuristicLab.Common;
27using HeuristicLab.Core;
28using HeuristicLab.Encodings.PermutationEncoding;
29using HeuristicLab.Optimization;
30using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
31
32namespace HeuristicLab.Problems.BinPacking2D {
33  [Item("Bin Packing Problem (2D, permutation encoding) (BPP)", "Represents a two-dimensional bin-packing problem using only bins with identical measures and bins/items with rectangular shapes.")]
34  [StorableClass]
35  [Creatable(Category = CreatableAttribute.Categories.CombinatorialProblems, Priority = 300)]
36  public sealed class PermutationProblem : ProblemBase<PermutationEncoding, Permutation> {
37    // persistence
38    [StorableConstructor]
39    private PermutationProblem(bool deserializing) : base(deserializing) { }
40
41    // cloning
42    private PermutationProblem(PermutationProblem original, Cloner cloner)
43      : base(original, cloner) {
44      RegisterEventHandlers();
45    }
46
47    public PermutationProblem()
48      : base() {
49      Decoder = new ExtremePointPermutationDecoder(); // default decoder
50
51      Encoding = new PermutationEncoding(EncodedSolutionName, Items.Count, PermutationTypes.Absolute);
52      AddOperators();
53      RegisterEventHandlers();
54    }
55    public override IDeepCloneable Clone(Cloner cloner) {
56      return new PermutationProblem(this, cloner);
57    }
58
59    [StorableHook(HookType.AfterDeserialization)]
60    private void AfterDeserialization() {
61      RegisterEventHandlers();
62    }
63
64
65    private void AddOperators() {
66      Operators.Add(new TranslocationMoveEvaluator());
67      Operators.Add(new Swap2MoveEvaluator());
68
69      Operators.RemoveAll(x => x is SingleObjectiveMoveGenerator);
70      Operators.RemoveAll(x => x is SingleObjectiveMoveMaker);
71      Operators.RemoveAll(x => x is SingleObjectiveMoveEvaluator);
72
73      Encoding.ConfigureOperators(Operators.OfType<IOperator>());
74
75      foreach (var op in Operators.OfType<IOperator<Permutation>>()) {
76        op.BinShapeParameter.ActualName = BinShapeParameter.Name;
77        op.ItemsParameter.ActualName = ItemsParameter.Name;
78        op.SolutionEvaluatorParameter.ActualName = SolutionEvaluatorParameter.Name;
79        op.DecoderParameter.ActualName = DecoderParameter.Name;
80      }
81    }
82
83    private void RegisterEventHandlers() {
84      // update encoding length when number of items is changed
85      ItemsParameter.ValueChanged += (sender, args) => Encoding.Length = Items.Count;
86    }
87  }
88}
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