1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2019 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 | using System;
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22 | using HEAL.Attic;
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23 | using HeuristicLab.Common;
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24 | using HeuristicLab.Core;
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25 |
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26 | namespace HeuristicLab.Problems.DataAnalysis {
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27 | [StorableType("8109BE58-CCFB-4462-A2F4-EEE5DFADAFF7")]
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28 | [Item("Interval Constraint", "Constraint on intervals.")]
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29 | public sealed class IntervalConstraint : Item {
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30 | [Storable]
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31 | private string expression;
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32 | public string Expression {
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33 | get => expression;
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34 | private set {
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35 | if (expression == value) return;
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36 | expression = value;
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37 | OnChanged();
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38 | OnToStringChanged();
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39 | }
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40 | }
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41 |
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42 | public string Definition {
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43 | get { return GetDefinitionString(); }
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44 | }
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45 |
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46 | [Storable]
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47 | private string variable;
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48 | public string Variable {
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49 | get => variable;
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50 | private set {
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51 | if (variable == value) return;
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52 | variable = value;
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53 | UpdateExpression();
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54 | OnChanged();
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55 | }
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56 | }
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57 |
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58 | [Storable]
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59 | private string target;
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60 | public string Target {
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61 | get => target;
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62 | private set {
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63 | if (target == value) return;
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64 | target = value;
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65 | UpdateExpression();
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66 | OnChanged();
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67 | }
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68 | }
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69 |
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70 | public bool IsDerivative {
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71 | get => NumberOfDerivations > 0;
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72 | }
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73 |
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74 | [Storable]
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75 | private int numberOfDerivations;
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76 | public int NumberOfDerivations {
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77 | get => numberOfDerivations;
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78 | set {
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79 | if (value < 0 || value > 3) throw new ArgumentException("Number of derivation has to be between 0 - 3.");
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80 | if (numberOfDerivations == value) return;
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81 | numberOfDerivations = value;
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82 | UpdateExpression();
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83 | OnChanged();
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84 | }
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85 | }
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86 |
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87 | [Storable]
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88 | private Interval interval;
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89 | public Interval Interval {
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90 | get => interval;
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91 | set {
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92 | if (interval == value) return;
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93 | interval = value;
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94 | UpdateExpression();
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95 | OnChanged();
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96 | }
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97 | }
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98 |
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99 | [Storable]
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100 | private bool enabled;
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101 | public bool Enabled {
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102 | get => enabled;
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103 | set {
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104 | if (enabled == value) return;
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105 | enabled = value;
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106 | OnChanged();
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107 | }
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108 | }
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109 |
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110 | [StorableConstructor]
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111 | private IntervalConstraint(StorableConstructorFlag _) : base(_) { }
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112 |
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113 | public IntervalConstraint(string expression, string variable, string target, int numberOfDerivations, Interval interval, bool enabled) : base(){
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114 | this.expression = expression;
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115 | this.variable = variable;
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116 | this.target = target;
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117 | this.numberOfDerivations = numberOfDerivations;
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118 | this.interval = interval;
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119 | this.enabled = enabled;
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120 | }
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121 |
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122 | public override IDeepCloneable Clone(Cloner cloner) {
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123 | return new IntervalConstraint(this, cloner);
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124 | }
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125 |
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126 | private IntervalConstraint(IntervalConstraint original, Cloner cloner)
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127 | : base(original, cloner) {
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128 | this.Expression = original.Expression;
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129 | this.Variable = original.Variable;
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130 | this.Target = original.Target;
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131 | this.NumberOfDerivations = original.NumberOfDerivations;
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132 | this.Interval = original.Interval;
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133 | this.Enabled = original.Enabled;
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134 | }
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135 |
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136 | public event EventHandler Changed;
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137 | private void OnChanged() {
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138 | EventHandler handlers = Changed;
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139 | if (handlers != null)
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140 | handlers(this, EventArgs.Empty);
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141 | }
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142 |
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143 | private static string GetDerivationString(int derivation) {
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144 | switch (derivation) {
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145 | case 1:
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146 | return "";
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147 | case 2:
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148 | return "²";
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149 | case 3:
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150 | return "³";
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151 | default:
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152 | return "";
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153 | }
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154 | }
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155 |
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156 | private void UpdateExpression() {
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157 | var expression = "";
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158 |
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159 | if (!IsDerivative) {
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160 | expression = string.Format("Target:{0} in {1}{2} .. {3}{4}",
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161 | Variable,
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162 | "[",
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163 | Interval?.LowerBound,
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164 | Interval?.UpperBound,
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165 | "]");
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166 | Expression = expression;
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167 | return;
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168 | }
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169 | expression = string.Format("∂{6}{1}/∂{0}{6} in {2}{3} .. {4}{5}",
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170 | Variable,
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171 | Target,
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172 | "[",
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173 | Interval?.LowerBound,
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174 | Interval?.UpperBound,
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175 | "]",
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176 | GetDerivationString(numberOfDerivations));
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177 | Expression = expression;
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178 | }
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179 |
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180 | private string GetDefinitionString() {
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181 | if (!IsDerivative) {
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182 | return "Target " + Variable;
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183 | }
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184 | var definition = $"∂{GetDerivationString(numberOfDerivations)}Target/∂{Variable}{GetDerivationString(numberOfDerivations)}";
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185 | return definition;
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186 | }
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187 |
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188 | public override string ToString() {
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189 | return Expression;
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190 | }
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191 | }
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192 | }
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