source: trunk/sources/HeuristicLab.Operators/3.3/LocalRandomCreator.cs @ 15583

Last change on this file since 15583 was 15583, checked in by swagner, 3 years ago

#2640: Updated year of copyrights in license headers

File size: 2.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2018 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.Parameters;
25using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
26
27namespace HeuristicLab.Operators {
28  [Item("LocalRandomCreator", "Creates a local pseudo random number generator from a global random number generator.")]
29  [StorableClass]
30  public sealed class LocalRandomCreator : SingleSuccessorOperator {
31    #region Parameter Properties
32    public LookupParameter<IRandom> GlobalRandomParameter {
33      get { return (LookupParameter<IRandom>)Parameters["GlobalRandom"]; }
34    }
35    public LookupParameter<IRandom> LocalRandomParameter {
36      get { return (LookupParameter<IRandom>)Parameters["LocalRandom"]; }
37    }
38    #endregion
39
40    [StorableConstructor]
41    private LocalRandomCreator(bool deserializing) : base(deserializing) { }
42    private LocalRandomCreator(LocalRandomCreator original, Cloner cloner)
43      : base(original, cloner) {
44    }
45    public LocalRandomCreator()
46      : base() {
47      #region Create parameters
48      Parameters.Add(new LookupParameter<IRandom>("GlobalRandom", "The global random number generator which is used to initialize the local random number generator."));
49      Parameters.Add(new LookupParameter<IRandom>("LocalRandom", "The local pseudo random number generator."));
50      #endregion
51    }
52
53    public override IDeepCloneable Clone(Cloner cloner) {
54      return new LocalRandomCreator(this, cloner);
55    }
56
57    public override IOperation Apply() {
58      IRandom globalRandom = GlobalRandomParameter.ActualValue;
59      IRandom localRandom = (IRandom)globalRandom.Clone();
60      localRandom.Reset(globalRandom.Next());
61      LocalRandomParameter.ActualValue = localRandom;
62      return base.Apply();
63    }
64  }
65}
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