source: branches/HeuristicLab.BinPacking/HeuristicLab.Problems.BinPacking/3.3/MoveEvaluators/GroupingVectorMoveEvaluator.cs @ 9760

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Encodings.IntegerVectorEncoding;
using HeuristicLab.Encodings.PackingEncoding.GroupingVector;
using HeuristicLab.Optimization;
using HeuristicLab.Parameters;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using HeuristicLab.Problems.BinPacking.Decoders;
using HeuristicLab.Problems.BinPacking.Dimensions;
using HeuristicLab.Problems.BinPacking.Evaluators;
using HeuristicLab.Problems.BinPacking.Interfaces;
using HeuristicLab.Problems.BinPacking.PackingBin;
using HeuristicLab.Problems.BinPacking.PackingItem;

namespace HeuristicLab.Problems.BinPacking {
  [Item("Grouping Vector MoveEvaluator", "Base class for evaluating packing moves.")]
  [StorableClass]
  public class GroupingVectorMoveEvaluator : PackingMoveEvaluator<ThreeDimensionalPacking, CuboidPackingBin, CuboidPackingItem>, ISingleObjectiveMoveEvaluator, IGroupingVectorMoveOperator{
    public ILookupParameter<SingleGroupingMove> SingleGroupingMoveParameter {
      get { return (ILookupParameter<SingleGroupingMove>)Parameters["SingleGroupingMove"]; }  
    }                
    public ILookupParameter<GroupingVectorEncoding> GroupingVectorParameter {
      get { return (ILookupParameter<GroupingVectorEncoding>)Parameters["GroupingVector"]; }
    }

    [StorableConstructor]
    protected GroupingVectorMoveEvaluator(bool deserializing) : base(deserializing) { }
    protected GroupingVectorMoveEvaluator(GroupingVectorMoveEvaluator original, Cloner cloner) : base(original, cloner) { }
    public GroupingVectorMoveEvaluator()
      : base() {
      Parameters.Add(new LookupParameter<SingleGroupingMove>("SingleGroupingMove", "The move to evaluate."));
      Parameters.Add(new LookupParameter<GroupingVectorEncoding>("GroupingVector", "The solution to evaluate."));
    }

    public override IDeepCloneable Clone(Cloner cloner) {
      return new GroupingVectorMoveEvaluator(this, cloner);
    }

    public override IOperation Apply() {
      GroupingVectorEncoding groupingVector = GroupingVectorParameter.ActualValue;
      SingleGroupingMove move = SingleGroupingMoveParameter.ActualValue;

      GroupingVectorEncoding newSolution = new GroupingVectorEncoding();
      newSolution.GroupingVector = new IntegerVector (groupingVector.GroupingVector);
      newSolution.GroupingVector[move.Index] = move.NewGroup;

      var packingPlan = ExtremePointGroupingVectorDecoder3D.Decode(newSolution, PackingBinMeasuresParameter.ActualValue, PackingItemMeasuresParameter.ActualValue);
      CurrentScopeParameter.ActualValue.Variables.Add(new Variable("PackingPlanAfterMove", packingPlan));

      DoubleValue quality = PackingRatioRegularIdenticalBinEvaluator<ThreeDimensionalPacking, CuboidPackingBin, CuboidPackingItem>.CalculatePackingRatio(
        packingPlan, PackingBinMeasuresParameter.ActualValue, PackingItemMeasuresParameter.ActualValue);

      double moveQuality = quality.Value;

      if (MoveQualityParameter.ActualValue == null) MoveQualityParameter.ActualValue = new DoubleValue(moveQuality);
      else MoveQualityParameter.ActualValue.Value = moveQuality;
      return base.Apply();
    }
  }
}