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source: branches/HeuristicLab.BinPacking/HeuristicLab.Problems.BinPacking/3.3/Encodings/PackingSequence/PackingSequenceRandomCreator.cs @ 9348

Last change on this file since 9348 was 9348, checked in by jhelm, 12 years ago

#1966: First working version of bin-packing problems.

File size: 2.8 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 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.Optimization;
27using HeuristicLab.Parameters;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29using HeuristicLab.Problems.BinPacking.Interfaces;
30
31namespace HeuristicLab.Encodings.PackingEncoding.PackingSequence {
32  [Item("PackingSequenceCreator", "Creator class used to create PackingSequence solutions for bin packing problems.")]
33  [StorableClass]
34  public class PackingSequenceRandomCreator : PackingSolutionCreator, IStochasticOperator {
35
36    public ILookupParameter<IRandom> RandomParameter {
37      get { return (LookupParameter<IRandom>)Parameters["Random"]; }
38    }
39    public IValueLookupParameter<IntValue> PackingItemsParameter {
40      get { return (IValueLookupParameter<IntValue>)Parameters["PackingItems"]; }
41    }
42
43    [StorableConstructor]
44    protected PackingSequenceRandomCreator(bool deserializing) : base(deserializing) { }
45    protected PackingSequenceRandomCreator(PackingSequenceRandomCreator original, Cloner cloner) : base(original, cloner) {
46    }
47    public override IDeepCloneable Clone(Cloner cloner) {
48      return new PackingSequenceRandomCreator(this, cloner);
49    }
50
51    public PackingSequenceRandomCreator()
52      : base() {
53      Parameters.Add(new LookupParameter<IRandom>("Random", "The pseudo random number generator."));
54      Parameters.Add(new ValueLookupParameter<IntValue>("PackingItems", "The number of packing-items handled in this problem instance."));
55
56      EncodedSolutionParameter.ActualName = "PackingSequence";
57    }
58
59
60    public static PackingSequenceEncoding Apply(int items, IRandom random) {
61      var solution = new PackingSequenceEncoding();
62      solution.PackingSequence = new Permutation(PermutationTypes.Absolute, items, random);
63      return solution;
64    }
65
66    protected override IPackingSolutionEncoding CreateSolution() {
67      return Apply(PackingItemsParameter.ActualValue.Value, RandomParameter.ActualValue);
68    }
69  }
70}
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