1 | #region License Information |
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2 | /* HeuristicLab |
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3 | * Copyright (C) 2002-2018 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 HeuristicLab.Encodings.PermutationEncoding; |
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23 | using HeuristicLab.Problems.BinPacking2D; |
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24 | using System; |
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25 | using System.Collections.Generic; |
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26 | using System.Linq; |
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27 | using System.Text; |
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28 | using System.Threading.Tasks; |
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29 | |
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30 | namespace HeuristicLab.Problems.BinPacking3D.Sorting { |
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31 | |
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32 | /// <summary> |
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33 | /// This is a extension class for sorting a permutation. |
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34 | /// They are extension methods for the class Permutation. |
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35 | /// </summary> |
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36 | public static class PermutationPackingItemSorter { |
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37 | |
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38 | /// <summary> |
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39 | /// Sorts a given permutation first by the volume and secoundly by the height. |
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40 | /// </summary> |
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41 | /// <param name="items">Permuation which should be sorted</param> |
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42 | /// <returns>A new sorted permutation</returns> |
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43 | public static Permutation SortByVolumeHeight(this IList<PackingItem> items) { |
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44 | return new Permutation(PermutationTypes.Absolute, |
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45 | items.Select((v, i) => new { Index = i, Item = v }) |
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46 | .OrderByDescending(x => x.Item.Depth * x.Item.Width * x.Item.Height) |
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47 | .ThenByDescending(x => x.Item.Height) |
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48 | .Select(x => x.Index).ToArray()); |
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49 | } |
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50 | |
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51 | /// <summary> |
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52 | /// Sorts a given permutation first by the heigth and secoundly by the volume. |
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53 | /// </summary> |
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54 | /// <param name="items">Permuation which should be sorted</param> |
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55 | /// <returns>A new sorted permutation</returns> |
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56 | public static Permutation SortByHeightVolume(this IList<PackingItem> items) { |
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57 | return new Permutation(PermutationTypes.Absolute, |
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58 | items.Select((v, i) => new { Index = i, Item = v }) |
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59 | .OrderByDescending(x => x.Item.Height) |
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60 | .ThenByDescending(x => x.Item.Depth * x.Item.Width * x.Item.Height) |
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61 | .Select(x => x.Index).ToArray()); |
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62 | } |
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63 | |
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64 | /// <summary> |
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65 | /// Sorts a given permutation first by the area and secondly by the height. |
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66 | /// </summary> |
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67 | /// <param name="items">Permuation which should be sorted</param> |
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68 | /// <returns>A new sorted permutation</returns> |
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69 | public static Permutation SortByAreaHeight(this IList<PackingItem> items) { |
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70 | return new Permutation(PermutationTypes.Absolute, |
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71 | items.Select((v, i) => new { Index = i, Item = v }) |
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72 | .OrderByDescending(x => x.Item.Depth * x.Item.Width) |
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73 | .ThenByDescending(x => x.Item.Height) |
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74 | .Select(x => x.Index).ToArray()); |
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75 | } |
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76 | |
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77 | /// <summary> |
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78 | /// Sorts a given permuation first by the height and secoundly by the area. |
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79 | /// </summary> |
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80 | /// <param name="items">Permuation which should be sorted</param> |
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81 | /// <returns>A new sorted permutation</returns> |
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82 | public static Permutation SortByHeightArea(this IList<PackingItem> items) { |
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83 | return new Permutation(PermutationTypes.Absolute, |
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84 | items.Select((v, i) => new { Index = i, Item = v }) |
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85 | .OrderByDescending(x => x.Item.Height) |
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86 | .ThenByDescending(x => x.Item.Depth * x.Item.Width) |
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87 | .Select(x => x.Index).ToArray()); |
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88 | } |
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89 | |
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90 | /// <summary> |
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91 | /// Sorts a given permutation. The items are being grouped by the cluster id. |
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92 | /// The cluster id is calulated as followed: clusterId = Ceiling( (width * depth) / (width * depth * delta)) |
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93 | /// The permutation is first being sorted by the area and secoundly by the height. |
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94 | /// </summary> |
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95 | /// <param name="items">Permuation which should be sorted</param> |
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96 | /// <param name="bin">The bin is needed for building the cluster</param> |
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97 | /// <param name="delta">The delta is needed for building the cluster</param> |
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98 | /// <returns>A new sorted permutation</returns> |
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99 | public static Permutation SortByClusteredAreaHeight(this IList<PackingItem> items, PackingShape bin, double delta) { |
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100 | double clusterRange = bin.Width * bin.Depth * delta; |
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101 | return new Permutation(PermutationTypes.Absolute, |
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102 | items.Select((v, i) => new { Index = i, Item = v, ClusterId = (int)(Math.Ceiling(v.Width * v.Depth / clusterRange)) }) |
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103 | .GroupBy(x => x.ClusterId) |
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104 | .Select(x => new { Cluster = x.Key, Items = x.OrderByDescending(y => y.Item.Height).ToList() }) |
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105 | .OrderByDescending(x => x.Cluster) |
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106 | .SelectMany(x => x.Items) |
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107 | .Select(x => x.Index).ToArray()); |
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108 | } |
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109 | |
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110 | /// <summary> |
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111 | /// Sorts a given permutation. The items are being grouped by the cluster id. |
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112 | /// The cluster id is calulated as followed: clusterId = Ceiling( (height) / (height * delta)) |
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113 | /// The permutation is first being sorted by the height and secoundly by the area. |
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114 | /// </summary> |
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115 | /// <param name="items">Permuation which should be sorted</param> |
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116 | /// <param name="bin">The bin is needed for building the cluster</param> |
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117 | /// <param name="delta">The delta is needed for building the cluster</param> |
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118 | /// <returns>A new sorted permutation</returns> |
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119 | public static Permutation SortByClusteredHeightArea(this IList<PackingItem> items, PackingShape bin, double delta) { |
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120 | double clusterRange2 = bin.Height * delta; |
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121 | return new Permutation(PermutationTypes.Absolute, |
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122 | items.Select((v, i) => new { Index = i, Item = v, ClusterId = (int)(Math.Ceiling(v.Height / clusterRange2)) }) |
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123 | .GroupBy(x => x.ClusterId) |
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124 | .Select(x => new { Cluster = x.Key, Items = x.OrderByDescending(y => y.Item.Depth * y.Item.Width).ToList() }) |
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125 | .OrderByDescending(x => x.Cluster) |
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126 | .SelectMany(x => x.Items) |
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127 | .Select(x => x.Index).ToArray()); |
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128 | } |
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129 | |
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130 | /// <summary> |
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131 | /// Sorts a given permutation first by the material, secoundly by the volume and finally by the height. |
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132 | /// </summary> |
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133 | /// <param name="items">Permuation which should be sorted</param> |
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134 | /// <returns>A new sorted permutation</returns> |
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135 | public static Permutation SortByMaterialVolumeHeight(this IList<PackingItem> items) { |
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136 | return new Permutation(PermutationTypes.Absolute, |
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137 | items.Select((v, i) => new { Index = i, Item = v }) |
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138 | .OrderByDescending(x => x.Item.Material) |
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139 | .ThenByDescending(x => x.Item.Depth * x.Item.Width * x.Item.Height) |
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140 | .ThenByDescending(x => x.Item.Height) |
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141 | .Select(x => x.Index).ToArray()); |
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142 | } |
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143 | |
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144 | /// <summary> |
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145 | /// Sorts a given permutation first by the material, secoundly by the heigth and finally by the volume. |
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146 | /// </summary> |
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147 | /// <param name="items">Permuation which should be sorted</param> |
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148 | /// <returns>A new sorted permutation</returns> |
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149 | public static Permutation SortByMaterialHeightVolume(this IList<PackingItem> items) { |
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150 | return new Permutation(PermutationTypes.Absolute, |
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151 | items.Select((v, i) => new { Index = i, Item = v }) |
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152 | .OrderByDescending(x => x.Item.Material) |
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153 | .ThenByDescending(x => x.Item.Height) |
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154 | .ThenByDescending(x => x.Item.Depth * x.Item.Width * x.Item.Height) |
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155 | .Select(x => x.Index).ToArray()); |
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156 | } |
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157 | |
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158 | /// <summary> |
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159 | /// Sorts a given permutation first by the material, secoundly by the area and finally by the height. |
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160 | /// </summary> |
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161 | /// <param name="items">Permuation which should be sorted</param> |
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162 | /// <returns>A new sorted permutation</returns> |
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163 | public static Permutation SortByMaterialAreaHeight(this IList<PackingItem> items) { |
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164 | return new Permutation(PermutationTypes.Absolute, |
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165 | items.Select((v, i) => new { Index = i, Item = v }) |
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166 | .OrderByDescending(x => x.Item.Material) |
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167 | .ThenByDescending(x => x.Item.Depth * x.Item.Width) |
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168 | .ThenByDescending(x => x.Item.Height) |
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169 | .Select(x => x.Index).ToArray()); |
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170 | } |
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171 | |
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172 | /// <summary> |
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173 | /// Sorts a given permuation first by the material, secoundly by the height and finally by the area. |
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174 | /// </summary> |
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175 | /// <param name="items">Permuation which should be sorted</param> |
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176 | /// <returns>A new sorted permutation</returns> |
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177 | public static Permutation SortByMaterialHeightArea(this IList<PackingItem> items) { |
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178 | return new Permutation(PermutationTypes.Absolute, |
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179 | items.Select((v, i) => new { Index = i, Item = v }) |
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180 | .OrderByDescending(x => x.Item.Material) |
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181 | .ThenByDescending(x => x.Item.Height) |
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182 | .ThenByDescending(x => x.Item.Depth * x.Item.Width) |
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183 | .Select(x => x.Index).ToArray()); |
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184 | } |
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185 | |
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186 | /// <summary> |
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187 | /// Sorts a given permutation. The items are being grouped by the cluster id. |
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188 | /// The cluster id is calulated as followed: clusterId = Ceiling( (width * depth) / (width * depth * delta)) |
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189 | /// The permutation is being clusterd by the area, first sorted by the material, secoundly by the height. |
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190 | /// </summary> |
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191 | /// <param name="items">Permuation which should be sorted</param> |
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192 | /// <param name="bin">The bin is needed for building the cluster</param> |
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193 | /// <param name="delta">The delta is needed for building the cluster</param> |
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194 | /// <returns>A new sorted permutation</returns> |
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195 | public static Permutation SortByMaterialClusteredAreaHeight(this IList<PackingItem> items, PackingShape bin, double delta) { |
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196 | double clusterRange = bin.Width * bin.Depth * delta; |
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197 | return new Permutation(PermutationTypes.Absolute, |
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198 | items.Select((v, i) => new { Index = i, Item = v, ClusterId = (int)(Math.Ceiling(v.Width * v.Depth / clusterRange)) }) |
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199 | .GroupBy(x => x.ClusterId) |
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200 | .Select(x => new { Cluster = x.Key, Items = x.OrderByDescending(z => z.Item.Material).ThenByDescending(y => y.Item.Height).ToList() }) |
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201 | .OrderByDescending(x => x.Cluster) |
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202 | .SelectMany(x => x.Items) |
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203 | .Select(x => x.Index).ToArray()); |
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204 | } |
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205 | |
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206 | /// <summary> |
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207 | /// Sorts a given permutation. The items are being grouped by the cluster id. |
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208 | /// The cluster id is calulated as followed: clusterId = Ceiling( (height) / (height * delta)) |
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209 | /// The permutation is being clusterd by the height, first sorted by the material, secoundly by the area. |
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210 | /// </summary> |
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211 | /// <param name="items">Permuation which should be sorted</param> |
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212 | /// <param name="bin">The bin is needed for building the cluster</param> |
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213 | /// <param name="delta">The delta is needed for building the cluster</param> |
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214 | /// <returns>A new sorted permutation</returns> |
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215 | public static Permutation SortByMaterialClusteredHeightArea(this IList<PackingItem> items, PackingShape bin, double delta) { |
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216 | double clusterRange2 = bin.Height * delta; |
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217 | return new Permutation(PermutationTypes.Absolute, |
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218 | items.Select((v, i) => new { Index = i, Item = v, ClusterId = (int)(Math.Ceiling(v.Height / clusterRange2)) }) |
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219 | .GroupBy(x => x.ClusterId) |
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220 | .Select(x => new { Cluster = x.Key, Items = x.OrderByDescending(z => z.Item.Material).ThenByDescending(y => y.Item.Depth * y.Item.Width).ToList() }) |
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221 | .OrderByDescending(x => x.Cluster) |
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222 | .SelectMany(x => x.Items) |
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223 | .Select(x => x.Index).ToArray()); |
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224 | } |
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225 | } |
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226 | } |
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