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Timestamp:
05/15/13 22:23:36 (11 years ago)
Author:
jhelm
Message:

#1966: Did some major refactoring in Decoder-classes; Added MoveEvaluator classes for different encodings and dimensions; Added new crossover-class for MCV encoding;

File:
1 edited

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  • branches/HeuristicLab.BinPacking/HeuristicLab.Problems.BinPacking/3.3/Decoders/2D/BL/BottomLeftMultiComponentVectorDecoder.cs

    r9440 r9495  
    4141  [Item("Identical bin two dimensional multi component vector decoder", "<Description missing...>")]
    4242  [StorableClass]
    43   public class BottomLeftMultiComponentVectorDecoder : IdenticalBinPackingSolutionDecoder<
     43  public class BottomLeftMultiComponentVectorDecoder : PackingSolutionDecoder<
    4444      TwoDimensionalPacking,
    4545      RectangularPackingBin,
    46       RectangularPackingItem,
    47       PackingPlan<TwoDimensionalPacking, RectangularPackingBin, RectangularPackingItem>> {
     46      RectangularPackingItem> {
    4847
    4948    public BottomLeftMultiComponentVectorDecoder()
    … …  
    6160
    6261
    63     protected override PackingPlan<TwoDimensionalPacking, RectangularPackingBin, RectangularPackingItem> CreatePackingPlanFromEncoding(IPackingSolutionEncoding encodedSolution) {
     62    public override PackingPlan<TwoDimensionalPacking, RectangularPackingBin, RectangularPackingItem> CreatePackingPlanFromEncoding(IPackingSolutionEncoding encodedSolution, RectangularPackingBin binMeasures, ItemList<RectangularPackingItem> itemMeasures) {
    6463
    6564      var solution = encodedSolution as MultiComponentVectorEncoding;
    … …  
    6867      PackingPlan<TwoDimensionalPacking, RectangularPackingBin, RectangularPackingItem> result =
    6968        new PackingPlan<TwoDimensionalPacking, RectangularPackingBin, RectangularPackingItem>(PackingBinMeasuresParameter.ActualValue, PackingItemMeasuresParameter.ActualValue);
    70       int nrOfBins = solution.PackingInformations.Max(pi => pi.AssignedBin) + 1;
    71 
    72       //Get all indexes of items for every bin according to grouping-vector
    73       Dictionary<int, List<PackingInformation>> unpackedItemIndexesPerBin = new Dictionary<int, List<PackingInformation>>();
    74 
    75       for (int i = 0; i < nrOfBins; i++) {
    76         unpackedItemIndexesPerBin[i] = solution.PackingInformations
    77           .Where(pi => pi.AssignedBin == i)
    78           .ToList();
    79       }
    80 
    81       ObservableDictionary<int, TwoDimensionalPacking> packingPositions = new ObservableDictionary<int, TwoDimensionalPacking>();
    82       var remainingItems = new List<PackingInformation>();
    83 
    84       //Iterate over all bin-lists
    85       for (int binNr = 0; binNr < nrOfBins; binNr++) {
    86         //Iterate over the current bin-item-list and find feasible positions in the current bin for each item
    87         var unpackedItems = unpackedItemIndexesPerBin[binNr];
    88         for (int i = 0; i < unpackedItems.Count; i++) {
    89           var itemIndex = unpackedItems[i].ItemIndex;
    90           var item = PackingItemMeasuresParameter.ActualValue[itemIndex];
    91           TwoDimensionalPacking position = null;
    92 
    93           position = BottomLeftFunctions.BottomLeftPosition(PackingBinMeasuresParameter.ActualValue, binNr, item, packingPositions, PackingItemMeasuresParameter.ActualValue, unpackedItems[i].Rotated);
    94 
    95           if (position == null) {
    96             position = BottomLeftFunctions.BottomLeftPosition(PackingBinMeasuresParameter.ActualValue, binNr, item, packingPositions, PackingItemMeasuresParameter.ActualValue, !unpackedItems[i].Rotated);
    97           }
    98           if (position == null) {
    99             remainingItems.Add(unpackedItems[i]);
    100           } else {
    101             packingPositions[itemIndex] = position;
    102             solution.PackingInformations.Find(pi => pi.ItemIndex == itemIndex).Rotated = position.Rotated;
    103           }
    104         }
    105       }
    106 
    107       //Packing of remaining items
    108       //Iterate over all bin-lists
    109       for (int binNr = 0; binNr < nrOfBins && remainingItems.Count > 0; binNr++) {
    110         var unpackedItems = new List<PackingInformation>(remainingItems);
    111         for (int i = 0; i < unpackedItems.Count; i++) {
    112           var itemIndex = unpackedItems[i].ItemIndex;
    113           var item = PackingItemMeasuresParameter.ActualValue[itemIndex];
    114           TwoDimensionalPacking position = null;
    115 
    116           //Look for space in current bin
    117           position = BottomLeftFunctions.BottomLeftPosition(PackingBinMeasuresParameter.ActualValue, binNr, item, packingPositions, PackingItemMeasuresParameter.ActualValue, unpackedItems[i].Rotated);
    118 
    119           if (position == null) {
    120             position = BottomLeftFunctions.BottomLeftPosition(PackingBinMeasuresParameter.ActualValue, binNr, item, packingPositions, PackingItemMeasuresParameter.ActualValue, !unpackedItems[i].Rotated);
    121           }
    122           if (position != null) {
    123             packingPositions[itemIndex] = position;
    124             remainingItems.Remove(unpackedItems[i]);
    125             solution.PackingInformations.Find(pi => pi.ItemIndex == itemIndex).AssignedBin = binNr;
    126             solution.PackingInformations.Find(pi => pi.ItemIndex == itemIndex).Rotated = position.Rotated;
    127           }
    128         }
    129         if (remainingItems.Count > 0 && binNr + 1 >= nrOfBins) {
    130           nrOfBins++;
    131         }
    132       }
    133 
    134       result.PackingItemPositions = packingPositions;
     69     
     70      result.PackingItemPositions = BottomLeftFunctions.BottomLeftPacking(solution, binMeasures, itemMeasures);
    13571
    13672      return result;
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