[3093] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[5445] | 3 | * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3093] | 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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[4722] | 22 | using HeuristicLab.Common;
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[3093] | 23 | using HeuristicLab.Core;
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| 24 | using HeuristicLab.Data;
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| 25 | using HeuristicLab.Operators;
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| 26 | using HeuristicLab.Parameters;
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| 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 28 |
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| 29 | namespace HeuristicLab.Optimization.Operators {
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| 30 | /// <summary>
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| 31 | /// Base class for modifying a double value according to a certain function in discrete intervalls.
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| 32 | /// </summary>
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| 33 | [Item("DiscreteDoubleValueModifier", "Base class for modifying a double value according to a certain function in discrete intervalls.")]
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| 34 | [StorableClass]
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| 35 | public abstract class DiscreteDoubleValueModifier : SingleSuccessorOperator, IDiscreteDoubleValueModifier {
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[6618] | 36 | #region parameter properties
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[3093] | 37 | /// <summary>
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| 38 | /// The parameter that should be modified.
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| 39 | /// </summary>
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| 40 | public ILookupParameter<DoubleValue> ValueParameter {
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| 41 | get { return (ILookupParameter<DoubleValue>)Parameters["Value"]; }
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| 42 | }
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| 43 | /// <summary>
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| 44 | /// The start value of the parameter, will be assigned to <see cref="ValueParameter"/> as soon as <see cref="IndexParamter"/> equals <see cref="StartIndexParameter"/>.
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| 45 | /// </summary>
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| 46 | public IValueLookupParameter<DoubleValue> StartValueParameter {
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| 47 | get { return (IValueLookupParameter<DoubleValue>)Parameters["StartValue"]; }
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| 48 | }
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| 49 | /// <summary>
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| 50 | /// The end value of the parameter, will be assigned to <see cref="ValueParameter"/> as soon as <see cref="IndexParamter"/> equals <see cref="EndIndexParameter"/>.
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| 51 | /// </summary>
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| 52 | public IValueLookupParameter<DoubleValue> EndValueParameter {
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| 53 | get { return (IValueLookupParameter<DoubleValue>)Parameters["EndValue"]; }
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| 54 | }
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| 55 | /// <summary>
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| 56 | /// The index that denotes from which point in the function (relative to <see cref="StartIndexParameter"/> and <see cref="EndIndexParameter"/> the value should be assigned.
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| 57 | /// </summary>
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| 58 | public ILookupParameter<IntValue> IndexParameter {
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| 59 | get { return (ILookupParameter<IntValue>)Parameters["Index"]; }
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| 60 | }
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| 61 | /// <summary>
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| 62 | /// As soon as <see cref="IndexParameter"/> is >= this parameter the value will start to be modified.
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| 63 | /// </summary>
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| 64 | public IValueLookupParameter<IntValue> StartIndexParameter {
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| 65 | get { return (IValueLookupParameter<IntValue>)Parameters["StartIndex"]; }
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| 66 | }
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| 67 | /// <summary>
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| 68 | /// As long as <see cref="IndexParameter"/> is <= this parameter the value will start to be modified.
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| 69 | /// </summary>
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| 70 | public IValueLookupParameter<IntValue> EndIndexParameter {
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| 71 | get { return (IValueLookupParameter<IntValue>)Parameters["EndIndex"]; }
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| 72 | }
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[6618] | 73 | #endregion
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[4722] | 74 | [StorableConstructor]
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| 75 | protected DiscreteDoubleValueModifier(bool deserializing) : base(deserializing) { }
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| 76 | protected DiscreteDoubleValueModifier(DiscreteDoubleValueModifier original, Cloner cloner) : base(original, cloner) { }
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[3093] | 77 | /// <summary>
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| 78 | /// Initializes a new instance of <see cref="DiscreteDoubleValueModifier"/> with 6 parameters
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| 79 | /// (<c>Value</c>, <c>StartValue</c>, <c>EndValue</c>, <c>Index</c>, <c>StartIndex</c>, <c>EndIndex</c>).
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| 80 | /// </summary>
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| 81 | protected DiscreteDoubleValueModifier()
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| 82 | : base() {
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| 83 | Parameters.Add(new LookupParameter<DoubleValue>("Value", "The double value to modify."));
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| 84 | Parameters.Add(new ValueLookupParameter<DoubleValue>("StartValue", "The start value of 'Value'."));
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| 85 | Parameters.Add(new ValueLookupParameter<DoubleValue>("EndValue", "The end value of 'Value'."));
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| 86 | Parameters.Add(new LookupParameter<IntValue>("Index", "The current index."));
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| 87 | Parameters.Add(new ValueLookupParameter<IntValue>("StartIndex", "The start index at which to start modifying 'Value'."));
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| 88 | Parameters.Add(new ValueLookupParameter<IntValue>("EndIndex", "The end index by which 'Value' should have reached 'EndValue'."));
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| 89 | }
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| 90 |
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| 91 | /// <summary>
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| 92 | /// Checks whether index is between start and end and forwards the call to <see cref="Modify"/> if startIndex < index < endIndex.
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| 93 | /// </summary>
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| 94 | /// <remarks>
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| 95 | /// If index = startIndex the call will not be forwarded and startValue will be used. The same with endIndex and endValue.
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| 96 | /// </remarks>
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| 97 | /// <returns>What the base class returns.</returns>
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| 98 | public override IOperation Apply() {
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| 99 | int index = IndexParameter.ActualValue.Value, startIndex = StartIndexParameter.ActualValue.Value;
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| 100 | if (index >= startIndex) {
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| 101 | int endIndex = EndIndexParameter.ActualValue.Value;
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| 102 | DoubleValue value = ValueParameter.ActualValue;
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[3610] | 103 | if (value == null) {
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| 104 | value = new DoubleValue();
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| 105 | ValueParameter.ActualValue = value;
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| 106 | }
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[3093] | 107 | double newValue = value.Value;
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| 108 | if (index == startIndex) {
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| 109 | newValue = StartValueParameter.ActualValue.Value;
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| 110 | } else if (index == endIndex) {
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| 111 | newValue = EndValueParameter.ActualValue.Value;
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| 112 | } else if (index < endIndex) {
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| 113 | double start = StartValueParameter.ActualValue.Value, end = EndValueParameter.ActualValue.Value;
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| 114 | newValue = Modify(value.Value, start, end, index, startIndex, endIndex);
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| 115 | }
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[3610] | 116 | value.Value = newValue;
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[3093] | 117 | }
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| 118 | return base.Apply();
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| 119 | }
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| 120 |
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| 121 | /// <summary>
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| 122 | /// Modifies a given value according to two support points denoted by (startIndex; startValue) and (endIndex; endValue).
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| 123 | /// The current 'index' and the last value of 'value' is also given.
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| 124 | /// </summary>
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| 125 | /// <param name="value">The last value.</param>
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| 126 | /// <param name="startValue">The start value.</param>
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| 127 | /// <param name="endValue">The end value.</param>
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| 128 | /// <param name="index">The current index.</param>
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| 129 | /// <param name="startIndex">The start index.</param>
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| 130 | /// <param name="endIndex">The end index.</param>
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| 131 | /// <returns>The new value.</returns>
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| 132 | protected abstract double Modify(double value, double startValue, double endValue, int index, int startIndex, int endIndex);
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| 133 | }
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| 134 | }
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