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source: trunk/sources/HeuristicLab.Random/RandomInjector.cs @ 143

Last change on this file since 143 was 77, checked in by swagner, 17 years ago

Fixed ticket #67

  • adapted accessing of variables in operators due to changes of variable lookup and the new name aliasing mechanism (actual/formal name translations should not be done directly anymore; instead the new method Scope.TranslateName should be used)
File size: 2.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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 System;
23using System.Collections.Generic;
24using System.Text;
25using System.Xml;
26using HeuristicLab.Core;
27using HeuristicLab.Data;
28using HeuristicLab.Operators;
29
30namespace HeuristicLab.Random {
31  public class RandomInjector : OperatorBase {
32    public override string Description {
33      get { return @"TODO\r\nOperator description still missing ..."; }
34    }
35
36    public RandomInjector()
37      : base() {
38      AddVariableInfo(new VariableInfo("SetSeedRandomly", "Initialize random seed randomly", typeof(BoolData), VariableKind.In));
39      GetVariableInfo("SetSeedRandomly").Local = true;
40      AddVariable(new Variable("SetSeedRandomly", new BoolData(true)));
41
42      AddVariableInfo(new VariableInfo("Seed", "Random seed", typeof(IntData), VariableKind.In));
43      GetVariableInfo("Seed").Local = true;
44      System.Random random = new System.Random();
45      AddVariable(new Variable("Seed", new IntData(random.Next())));
46
47      AddVariableInfo(new VariableInfo("Random", "Pseudo random number generator", typeof(IRandom), VariableKind.New));
48    }
49
50    public override IOperation Apply(IScope scope) {
51      bool setRandomly = GetVariableValue<BoolData>("SetSeedRandomly", scope, true).Data;
52      IntData seed = GetVariableValue<IntData>("Seed", scope, true);
53      if (setRandomly) {
54        System.Random random = new System.Random();
55        seed.Data = random.Next();
56      }
57      MersenneTwister mersenneTwister = new MersenneTwister((uint)seed.Data);
58
59      scope.AddVariable(new Variable(scope.TranslateName("Random"), mersenneTwister));
60      return null;
61    }
62  }
63}
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