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source: stable/HeuristicLab.Problems.TravelingSalesman.Views/3.3/PathTSPTourView.cs @ 16418

Last change on this file since 16418 was 15584, checked in by swagner, 7 years ago

#2640: Updated year of copyrights in license headers on stable

File size: 6.5 KB
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[3107]1#region License Information
2/* HeuristicLab
[15584]3 * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
[3107]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.Drawing;
24using System.Windows.Forms;
25using HeuristicLab.Core.Views;
26using HeuristicLab.Data;
27using HeuristicLab.Encodings.PermutationEncoding;
28using HeuristicLab.MainForm;
29
[3158]30namespace HeuristicLab.Problems.TravelingSalesman.Views {
[3107]31  /// <summary>
[4373]32  /// The base class for visual representations of a path tour for a TSP.
[3107]33  /// </summary>
34  [View("PathTSPTour View")]
35  [Content(typeof(PathTSPTour), true)]
36  public sealed partial class PathTSPTourView : ItemView {
37    public new PathTSPTour Content {
38      get { return (PathTSPTour)base.Content; }
39      set { base.Content = value; }
40    }
41
42    /// <summary>
[4373]43    /// Initializes a new instance of <see cref="PathTSPTourView"/>.
[3107]44    /// </summary>
45    public PathTSPTourView() {
46      InitializeComponent();
47    }
48
49    protected override void DeregisterContentEvents() {
[3693]50      Content.QualityChanged -= new EventHandler(Content_QualityChanged);
[3107]51      Content.CoordinatesChanged -= new EventHandler(Content_CoordinatesChanged);
52      Content.PermutationChanged -= new EventHandler(Content_PermutationChanged);
53      base.DeregisterContentEvents();
54    }
55    protected override void RegisterContentEvents() {
56      base.RegisterContentEvents();
[3693]57      Content.QualityChanged += new EventHandler(Content_QualityChanged);
[3107]58      Content.CoordinatesChanged += new EventHandler(Content_CoordinatesChanged);
59      Content.PermutationChanged += new EventHandler(Content_PermutationChanged);
60    }
61
62    protected override void OnContentChanged() {
63      base.OnContentChanged();
64      if (Content == null) {
[3693]65        qualityViewHost.Content = null;
[3153]66        pictureBox.Image = null;
[3693]67        tourViewHost.Content = null;
[3107]68      } else {
[3693]69        qualityViewHost.Content = Content.Quality;
[3153]70        GenerateImage();
[3693]71        tourViewHost.Content = Content.Permutation;
[3107]72      }
73    }
74
[3904]75    protected override void SetEnabledStateOfControls() {
76      base.SetEnabledStateOfControls();
[3693]77      qualityGroupBox.Enabled = Content != null;
[3454]78      pictureBox.Enabled = Content != null;
[3693]79      tourGroupBox.Enabled = Content != null;
[3454]80    }
81
[3107]82    private void GenerateImage() {
83      if ((pictureBox.Width > 0) && (pictureBox.Height > 0)) {
84        if (Content == null) {
85          pictureBox.Image = null;
86        } else {
87          DoubleMatrix coordinates = Content.Coordinates;
88          Permutation permutation = Content.Permutation;
[3139]89          Bitmap bitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
[3107]90
[3153]91          if ((coordinates != null) && (coordinates.Rows > 0) && (coordinates.Columns == 2)) {
[3139]92            double xMin = double.MaxValue, yMin = double.MaxValue, xMax = double.MinValue, yMax = double.MinValue;
93            for (int i = 0; i < coordinates.Rows; i++) {
94              if (xMin > coordinates[i, 0]) xMin = coordinates[i, 0];
95              if (yMin > coordinates[i, 1]) yMin = coordinates[i, 1];
96              if (xMax < coordinates[i, 0]) xMax = coordinates[i, 0];
97              if (yMax < coordinates[i, 1]) yMax = coordinates[i, 1];
98            }
[3107]99
[3139]100            int border = 20;
[3502]101            double xStep = xMax != xMin ? (pictureBox.Width - 2 * border) / (xMax - xMin) : 1;
102            double yStep = yMax != yMin ? (pictureBox.Height - 2 * border) / (yMax - yMin) : 1;
[3107]103
[3139]104            Point[] points = new Point[coordinates.Rows];
[3153]105            for (int i = 0; i < coordinates.Rows; i++)
106              points[i] = new Point(border + ((int)((coordinates[i, 0] - xMin) * xStep)),
[3213]107                                    bitmap.Height - (border + ((int)((coordinates[i, 1] - yMin) * yStep))));
[3107]108
[3502]109            using (Graphics graphics = Graphics.FromImage(bitmap)) {
[11089]110              if (permutation != null && permutation.Length > 1) {
[3502]111                Point[] tour = new Point[permutation.Length];
112                for (int i = 0; i < permutation.Length; i++) {
[11297]113                  if (permutation[i] >= 0 && permutation[i] < points.Length)
114                    tour[i] = points[permutation[i]];
[3502]115                }
116                graphics.DrawPolygon(Pens.Black, tour);
[3153]117              }
[3502]118              for (int i = 0; i < points.Length; i++)
119                graphics.FillRectangle(Brushes.Red, points[i].X - 2, points[i].Y - 2, 6, 6);
[3153]120            }
[7621]121          } else {
122            using (Graphics graphics = Graphics.FromImage(bitmap)) {
123              graphics.Clear(Color.White);
124              Font font = new Font(FontFamily.GenericSansSerif, 12, FontStyle.Regular);
125              string text = "No coordinates defined or in wrong format.";
126              SizeF strSize = graphics.MeasureString(text, font);
127              graphics.DrawString(text, font, Brushes.Black, (float)(pictureBox.Width - strSize.Width) / 2.0f, (float)(pictureBox.Height - strSize.Height) / 2.0f);
128            }
[3139]129          }
[3107]130          pictureBox.Image = bitmap;
131        }
132      }
133    }
134
[3693]135    private void Content_QualityChanged(object sender, EventArgs e) {
136      if (InvokeRequired)
137        Invoke(new EventHandler(Content_QualityChanged), sender, e);
138      else
139        qualityViewHost.Content = Content.Quality;
140    }
[3107]141    private void Content_CoordinatesChanged(object sender, EventArgs e) {
142      if (InvokeRequired)
143        Invoke(new EventHandler(Content_CoordinatesChanged), sender, e);
144      else
145        GenerateImage();
146    }
147    private void Content_PermutationChanged(object sender, EventArgs e) {
148      if (InvokeRequired)
149        Invoke(new EventHandler(Content_PermutationChanged), sender, e);
[3693]150      else {
[3107]151        GenerateImage();
[3693]152        tourViewHost.Content = Content.Permutation;
153      }
[3107]154    }
155
156    private void pictureBox_SizeChanged(object sender, EventArgs e) {
157      GenerateImage();
158    }
159  }
160}
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