source: branches/HeuristicLab.BinPacking/HeuristicLab.Problems.BinPacking.2D/3.3/Evaluators/BinUtilizationEvaluator.cs @ 14154

Last change on this file since 14154 was 14154, checked in by gkronber, 5 years ago

#1966: refactoring

File size: 2.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 Joseph Helm and Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Linq;
24using HeuristicLab.Core;
25using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
26using HeuristicLab.Common;
27
28namespace HeuristicLab.Problems.BinPacking2D {
29  [Item("Bin-Utilization Evaluator (2d)", "Calculates the overall utilization of bin space.")]
30  [StorableClass]
31  public class BinUtilizationEvaluator : Item, IEvaluator {
32
33    [StorableConstructor]
34    protected BinUtilizationEvaluator(bool deserializing) : base(deserializing) { }
35    protected BinUtilizationEvaluator(BinUtilizationEvaluator original, Cloner cloner)
36      : base(original, cloner) {
37    }
38    public BinUtilizationEvaluator() : base() { }
39    public override IDeepCloneable Clone(Cloner cloner) {
40      return new BinUtilizationEvaluator(this, cloner);
41    }
42
43    #region IEvaluator Members
44    public double Evaluate(Solution solution) {
45      return CalculateBinUtilization(solution);
46    }
47
48
49    public static double CalculateBinUtilization(Solution solution) {
50      int nrOfBins = solution.NrOfBins;
51      double totalUsedSpace = 0;
52      double totalUsableSpace = 0;
53
54      for (int i = 0; i < nrOfBins; i++) {
55        totalUsableSpace += solution.BinPackings[i].BinShape.Volume;
56        totalUsedSpace += solution.BinPackings[i].Items.Sum(kvp => kvp.Value.Volume);
57      }
58
59      return totalUsedSpace / totalUsableSpace;
60    }
61
62    #endregion
63  }
64}
Note: See TracBrowser for help on using the repository browser.