1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using System.Collections.Generic;
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24 | using System.Globalization;
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25 | using System.Linq;
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26 | using System.Text;
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27 | using System.Xml;
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28 | using HeuristicLab.Core;
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29 | using HeuristicLab.Data;
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30 | using HeuristicLab.Random;
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31 |
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32 | namespace HeuristicLab.SimOpt {
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33 | public class UniformIntInitializer : SimOptInitializationOperatorBase {
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34 | public override string Description {
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35 | get { return @"Assigns an IntData or ConstrainedIntData a value uniformly distributed in the interval [min;max["; }
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36 | }
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37 |
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38 | public UniformIntInitializer()
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39 | : base() {
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40 | AddVariableInfo(new VariableInfo("Min", "", typeof(IntData), VariableKind.In));
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41 | AddVariableInfo(new VariableInfo("Max", "", typeof(IntData), VariableKind.In));
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42 | }
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43 |
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44 | protected override void Apply(IScope scope, IRandom random, IItem item) {
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45 | int min = GetVariableValue<IntData>("Min", scope, true).Data;
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46 | int max = GetVariableValue<IntData>("Max", scope, true).Data;
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47 |
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48 | if (item is IntData) {
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49 | ((IntData)item).Data = random.Next(min, max);
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50 | return;
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51 | } else if (item is ConstrainedIntData) {
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52 | ConstrainedIntData data = (item as ConstrainedIntData);
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53 | for (int tries = 100; tries >= 0; tries--) {
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54 | if (data.TrySetData(random.Next(min, max))) return;
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55 | }
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56 | throw new InvalidProgramException("Coudn't find a valid value in 100 tries");
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57 | } else throw new InvalidOperationException("ERROR: UniformIntManipulator does not know how to work with " + ((item != null) ? (item.GetType().ToString()) : ("null")) + " data");
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58 | }
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59 | }
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60 | }
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