1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2012 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.Text;
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24 | using HeuristicLab.Collections;
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25 | using HeuristicLab.Common;
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26 | using HeuristicLab.Core;
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27 | using HeuristicLab.Data;
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28 | using HeuristicLab.Encodings.IntegerVectorEncoding;
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29 | using HeuristicLab.Encodings.PermutationEncoding;
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30 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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31 | using HeuristicLab.Problems.BinPacking.Interfaces;
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32 |
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33 | namespace HeuristicLab.Encodings.PackingEncoding.MultiComponentVector {
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34 | [Item("Multi Component Vector Encoding", "Represents an encoding for a bin packing problem using an array of objects containing multiple packing-informations for every packing-item.")]
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35 | [StorableClass]
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36 | public class MultiComponentVectorEncoding : Item, IPackingSolutionEncoding {
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37 |
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38 | [Storable]
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39 | public ObservableDictionary<int, ItemList<PackingInformation>> PackingInformations {get;set;}
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40 |
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41 | public int NrOfBins { get { return PackingInformations.Count; } }
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42 | public int NrOfItems {
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43 | get {
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44 | int nrOfItems = 0;
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45 | foreach (var entry in PackingInformations) { nrOfItems += entry.Value.Count; }
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46 | return nrOfItems;
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47 | }
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48 | }
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49 |
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50 | [StorableConstructor]
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51 | protected MultiComponentVectorEncoding(bool deserializing) : base(deserializing) { }
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52 | protected MultiComponentVectorEncoding(MultiComponentVectorEncoding original, Cloner cloner)
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53 | : base(original, cloner) {
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54 | this.PackingInformations = new ObservableDictionary<int,ItemList<PackingInformation>>();
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55 | foreach (var entry in original.PackingInformations) {
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56 | this.PackingInformations[entry.Key] = cloner.Clone(entry.Value);
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57 | }
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58 | }
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59 | public override IDeepCloneable Clone(Cloner cloner) {
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60 | return new MultiComponentVectorEncoding(this, cloner);
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61 | }
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62 |
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63 | public MultiComponentVectorEncoding()
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64 | : base() {
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65 | PackingInformations = new ObservableDictionary<int, ItemList<PackingInformation>>();
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66 | }
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67 |
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68 | public override string ToString() {
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69 | StringBuilder sb = new StringBuilder();
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70 | sb.Append("[ ");
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71 | foreach (var gi in PackingInformations) {
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72 | sb.Append("g#" + gi.Key.ToString() + "{ ");
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73 | foreach (var pi in gi.Value) {
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74 | sb.Append(pi.ToString() + " ");
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75 | }
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76 | sb.Append("} ");
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77 | }
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78 | sb.Append("]");
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79 | return sb.ToString();
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80 | }
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81 |
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82 |
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83 | public override bool Equals(object obj) {
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84 | MultiComponentVectorEncoding mce = obj as MultiComponentVectorEncoding;
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85 | if (mce != null && mce.PackingInformations != null && mce.PackingInformations.Count == this.PackingInformations.Count) {
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86 | for (int i = 0; i < mce.PackingInformations.Count; i++) {
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87 | if (mce.PackingInformations[i] != this.PackingInformations[i])
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88 | return false;
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89 | }
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90 | }
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91 |
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92 | return true;
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93 | }
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94 | public override int GetHashCode() {
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95 | return PackingInformations.GetHashCode();
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96 | }
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97 |
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98 | }
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99 |
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100 | [Item("Packing Information", "Represents a composition of packing informations for the multi-component packing-encoding.")]
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101 | [StorableClass]
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102 | public class PackingInformation : Item {
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103 | [Storable]
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104 | public int ItemID { get; set; }
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105 | [Storable]
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106 | public bool Rotated { get; set; }
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107 |
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108 | public PackingInformation(int itemID, bool rotated) {
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109 | this.ItemID = itemID;
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110 | this.Rotated = rotated;
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111 | }
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112 | public PackingInformation(PackingInformation original) {
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113 | this.ItemID = original.ItemID;
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114 | this.Rotated = original.Rotated;
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115 | }
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116 |
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117 | [StorableConstructor]
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118 | protected PackingInformation(bool deserializing) : base(deserializing) { }
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119 | protected PackingInformation(PackingInformation original, Cloner cloner)
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120 | : base(original, cloner) {
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121 | this.ItemID = original.ItemID;
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122 | this.Rotated = original.Rotated;
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123 | }
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124 | public override IDeepCloneable Clone(Cloner cloner) {
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125 | return new PackingInformation(this, cloner);
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126 | }
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127 |
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128 | public override string ToString() {
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129 | return String.Format("{0}", ItemID.ToString());
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130 | //return String.Format("({0}, {1}) ", ItemID, Rotated ? "t" : "f");
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131 | }
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132 |
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133 | public override bool Equals(object obj) {
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134 | PackingInformation pi = obj as PackingInformation;
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135 | if (pi != null)
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136 | return this.ItemID.Equals(pi.ItemID) && this.Rotated.Equals(pi.Rotated);
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137 |
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138 | return false;
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139 | }
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140 |
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141 | public override int GetHashCode() {
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142 | return base.GetHashCode();
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143 | }
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144 |
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145 | public static ObservableDictionary<int, ItemList<PackingInformation>> CreateDictionaryRandomly(int items, int nrOfBins, IRandom random) {
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146 | var result = new ObservableDictionary<int, ItemList<PackingInformation>>();
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147 | for (int i = 0; i < nrOfBins; i++)
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148 | result[i] = new ItemList<PackingInformation>();
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149 |
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150 | Permutation randomItemSequence = new Permutation(PermutationTypes.Absolute, items, random);
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151 | foreach (int i in randomItemSequence) {
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152 | result[random.Next(nrOfBins)].Add(new PackingInformation(i, random.Next(100) > 60 ? true : false));
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153 | }
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154 | return result;
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155 | }
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156 |
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157 | public static ObservableDictionary<int, ItemList<PackingInformation>> CreateDictionaryRandomlyWithSortedSequence(int items, int nrOfBins, IRandom random) {
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158 | var result = new ObservableDictionary<int, ItemList<PackingInformation>>();
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159 | for (int i = 0; i < nrOfBins; i++)
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160 | result[i] = new ItemList<PackingInformation>();
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161 |
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162 | for (int i = 0; i < items; i++) {
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163 | result[random.Next(nrOfBins)].Add(new PackingInformation(i, false));
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164 | }
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165 | return result;
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166 | }
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167 | }
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168 |
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169 | }
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