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.Collections.Generic;
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24 | using System.Linq;
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25 | using System.Text;
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26 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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27 | using HeuristicLab.Core;
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28 | using HeuristicLab.Problems.BinPacking.Dimensions;
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29 | using HeuristicLab.Problems.BinPacking.PackingBin;
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30 | using HeuristicLab.Problems.BinPacking.PackingItem;
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31 | using HeuristicLab.Encodings.PackingEncoding.PackingPlan;
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32 | using HeuristicLab.Encodings.PermutationEncoding;
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33 | using HeuristicLab.Common;
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34 | using HeuristicLab.Data;
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35 | using HeuristicLab.Collections;
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36 | using HeuristicLab.Encodings.PackingEncoding.PackingSequence;
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37 | using HeuristicLab.Problems.BinPacking.Interfaces;
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38 | using HeuristicLab.Encodings.PackingEncoding.GroupingVector;
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39 | using HeuristicLab.Encodings.PackingEncoding.MultiComponentVector;
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40 |
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41 | namespace HeuristicLab.Problems.BinPacking.Decoders {
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42 | [Item("ISO container decoder for the MultiComponentVector encoding.", "<Description missing...>")]
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43 | [StorableClass]
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44 | public class ISOContainerMultiComponentVectorDecoder3D : PackingSolutionDecoder<
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45 | ThreeDimensionalPacking,
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46 | CuboidPackingBin,
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47 | CuboidPackingItem>, I3DMCVDecoder {
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48 |
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49 | public ISOContainerMultiComponentVectorDecoder3D ()
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50 | : base() {
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51 | }
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52 | [StorableConstructor]
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53 | protected ISOContainerMultiComponentVectorDecoder3D (bool deserializing) : base(deserializing) { }
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54 | protected ISOContainerMultiComponentVectorDecoder3D(ISOContainerMultiComponentVectorDecoder3D original, Cloner cloner)
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55 | : base(original, cloner) {
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56 | }
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57 | public override IDeepCloneable Clone(Cloner cloner) {
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58 | return new ISOContainerMultiComponentVectorDecoder3D(this, cloner);
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59 | }
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60 |
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61 | public static PackingPlan<ThreeDimensionalPacking, CuboidPackingBin, CuboidPackingItem> Decode(MultiComponentVectorEncoding solution, CuboidPackingBin binMeasures, ItemList<CuboidPackingItem> itemMeasures) {
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62 | PackingPlan<ThreeDimensionalPacking, CuboidPackingBin, CuboidPackingItem> resultPlan = new PackingPlan3D(binMeasures);
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63 | ObservableList<BinPacking3D> result = new ObservableList<BinPacking3D>();
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64 |
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65 | var sequenceMatrix = solution.GenerateSequenceMatrix();
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66 | Dictionary<int, bool> rotated = solution.GenerateRotationArray();
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67 |
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68 | //Fill bins according to grouping vector
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69 | List<int> remainingIDs = new List<int>();
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70 | foreach (var sequence in sequenceMatrix) {
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71 | remainingIDs = remainingIDs.Concat(sequence).ToList();
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72 | var bp = new BinPacking3D(binMeasures);
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73 | bp.ExtremePointBasedPacking(ref remainingIDs, itemMeasures, true, rotated);
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74 | if (remainingIDs.Count > 0) {
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75 | bp.DoubleDepth();
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76 | bp.ExtremePointBasedPacking(ref remainingIDs, itemMeasures, true, rotated);
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77 | }
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78 | result.Add(bp);
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79 | }
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80 | result.RemoveAll(x => x.ItemPositions.Count == 0);
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81 | result = new ObservableList<BinPacking3D>(result.OrderByDescending(bp => bp.PackingDensity));
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82 |
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83 | //Try to put remaining items in existing bins
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84 | var temp = new List<int>(remainingIDs);
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85 | foreach (int id in temp) {
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86 | foreach (var bp in result) {
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87 | var position = bp.FindExtremePointForItem(itemMeasures[id], rotated[id], true);
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88 | if (remainingIDs.Count > 0) {
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89 | bp.DoubleDepth();
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90 | position = bp.FindExtremePointForItem(itemMeasures[id], rotated[id], true);
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91 | }
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92 | if (position != null) {
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93 | bp.PackItem(id, itemMeasures[id], position);
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94 | remainingIDs.Remove(id);
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95 | }
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96 | }
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97 | }
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98 |
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99 | //Put still remaining items in new bins
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100 | while (remainingIDs.Count > 0) {
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101 | var bp = new BinPacking3D(binMeasures);
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102 | bp.ExtremePointBasedPacking(ref remainingIDs, itemMeasures, true, rotated);
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103 | if (remainingIDs.Count > 0) {
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104 | bp.DoubleDepth();
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105 | bp.ExtremePointBasedPacking(ref remainingIDs, itemMeasures, true, rotated);
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106 | }
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107 | result.Add(bp);
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108 | }
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109 | result.RemoveAll(x => x.ItemPositions.Count == 0);
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110 | resultPlan.BinPackings = new ObservableList<BinPacking<ThreeDimensionalPacking, CuboidPackingBin, CuboidPackingItem>>(result.OrderByDescending(bp => bp.PackingDensity));
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111 | return resultPlan;
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112 | }
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113 |
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114 |
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115 | public override PackingPlan<ThreeDimensionalPacking, CuboidPackingBin, CuboidPackingItem> CreatePackingPlanFromEncoding(IItem encodedSolution, CuboidPackingBin binMeasures, ItemList<CuboidPackingItem> itemMeasures) {
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116 | var solution = encodedSolution as MultiComponentVectorEncoding;
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117 | if (solution == null) throw new InvalidOperationException("Encoding is not of type MultiComponentVector");
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118 | return Decode(solution, binMeasures, itemMeasures);
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119 | }
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120 | }
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121 | }
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