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source: branches/3.0/sources/HeuristicLab.Routing.TSP/TSPDistanceMatrixInjectorBase.cs @ 15781

Last change on this file since 15781 was 77, checked in by swagner, 17 years ago

Fixed ticket #67

  • adapted accessing of variables in operators due to changes of variable lookup and the new name aliasing mechanism (actual/formal name translations should not be done directly anymore; instead the new method Scope.TranslateName should be used)
File size: 2.5 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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.Collections.Generic;
24using System.Text;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Operators;
28
29namespace HeuristicLab.Routing.TSP {
30  public abstract class TSPDistanceMatrixInjectorBase : OperatorBase {
31    public TSPDistanceMatrixInjectorBase()
32      : base() {
33      AddVariableInfo(new VariableInfo("Cities", "Number of cities", typeof(IntData), VariableKind.In));
34      AddVariableInfo(new VariableInfo("Coordinates", "City coordinates", typeof(DoubleMatrixData), VariableKind.In));
35      AddVariableInfo(new VariableInfo("DistanceMatrix", "Distance matrix containing all distances between cities", typeof(DoubleMatrixData), VariableKind.New));
36    }
37
38    public override IOperation Apply(IScope scope) {
39      int cities = GetVariableValue<IntData>("Cities", scope, true).Data;
40      double[,] coordinates = GetVariableValue<DoubleMatrixData>("Coordinates", scope, true).Data;
41      double[,] distanceMatrix = new double[cities, cities];
42
43      for (int i = 0; i < cities; i++) {
44        for (int j = 0; j < cities; j++) {
45          distanceMatrix[i, j] = CalculateDistance(coordinates[i, 0],
46                                                   coordinates[i, 1],
47                                                   coordinates[j, 0],
48                                                   coordinates[j, 1]);
49        }
50      }
51      scope.AddVariable(new Variable(scope.TranslateName("DistanceMatrix"), new DoubleMatrixData(distanceMatrix)));
52
53      return null;
54    }
55
56    protected abstract double CalculateDistance(double x1, double y1, double x2, double y2);
57  }
58}
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