1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using System.ComponentModel;
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24 | using System.Drawing;
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25 | using System.Globalization;
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26 | using System.Windows.Forms;
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27 | using HeuristicLab.Core.Views;
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28 | using HeuristicLab.Data;
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29 | using HeuristicLab.Encodings.PermutationEncoding;
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30 | using HeuristicLab.MainForm;
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31 |
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32 | namespace HeuristicLab.Problems.QuadraticAssignment.Views {
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33 | /// <summary>
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34 | /// The base class for visual representations of a path tour for a TSP.
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35 | /// </summary>
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36 | [View("QAPAssignment View")]
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37 | [Content(typeof(QAPAssignment), true)]
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38 | public sealed partial class QAPAssignmentView : ItemView {
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39 | private Bitmap bitmap;
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40 |
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41 | public new QAPAssignment Content {
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42 | get { return (QAPAssignment)base.Content; }
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43 | set { base.Content = value; }
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44 | }
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45 |
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46 | /// <summary>
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47 | /// Initializes a new instance of <see cref="PathTSPTourView"/>.
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48 | /// </summary>
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49 | public QAPAssignmentView() {
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50 | InitializeComponent();
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51 | }
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52 |
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53 | protected override void DeregisterContentEvents() {
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54 | Content.PropertyChanged -= new PropertyChangedEventHandler(Content_PropertyChanged);
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55 | base.DeregisterContentEvents();
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56 | }
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57 | protected override void RegisterContentEvents() {
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58 | base.RegisterContentEvents();
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59 | Content.PropertyChanged += new PropertyChangedEventHandler(Content_PropertyChanged);
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60 | }
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61 |
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62 | protected override void OnContentChanged() {
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63 | base.OnContentChanged();
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64 | if (Content == null) {
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65 | qualityViewHost.Content = null;
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66 | pictureBox.Image = null;
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67 | assignmentViewHost.Content = null;
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68 | } else {
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69 | qualityViewHost.Content = Content.Quality;
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70 | GenerateImage();
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71 | assignmentViewHost.Content = Content.Assignment;
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72 | }
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73 | }
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74 |
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75 | protected override void SetEnabledStateOfControls() {
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76 | base.SetEnabledStateOfControls();
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77 | qualityGroupBox.Enabled = Content != null;
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78 | pictureBox.Enabled = Content != null;
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79 | assignmentGroupBox.Enabled = Content != null;
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80 | }
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81 |
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82 | private void GenerateImage() {
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83 | if ((pictureBox.Width > 0) && (pictureBox.Height > 0)) {
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84 | if (Content == null) {
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85 | pictureBox.Image = null;
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86 | if (bitmap != null) bitmap.Dispose();
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87 | bitmap = null;
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88 | } else {
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89 | Bitmap newBitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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90 | bool drawDistances = distancesRadioButton.Checked;
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91 | DoubleMatrix coordinates = Content.Coordinates;
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92 | DoubleMatrix distances = Content.Distances;
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93 |
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94 | if ((coordinates == null || coordinates.Rows == 0)
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95 | && (distances == null || distances.Rows == 0)) {
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96 | using (Graphics g = Graphics.FromImage(newBitmap)) {
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97 | string str = "No coordinates and no distance matrix specified.";
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98 | SizeF strSize = g.MeasureString(str, Font);
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99 | g.DrawString(str, Font, Brushes.Black, (float)(newBitmap.Width - strSize.Width) / 2.0f, (float)(newBitmap.Height - strSize.Height) / 2.0f);
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100 | }
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101 | } else {
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102 | if ((coordinates == null || coordinates.Rows == 0)
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103 | && Content.ViewCoordinates == null) {
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104 | coordinates = new DoubleMatrix(distances.Rows, 2);
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105 | double rad = (2 * Math.PI) / coordinates.Rows;
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106 | for (int i = 0; i < coordinates.Rows; i++) {
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107 | coordinates[i, 0] = 10 * Math.Cos(rad * i);
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108 | coordinates[i, 1] = 10 * Math.Sin(rad * i);
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109 | }
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110 | Content.ViewCoordinates = coordinates;
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111 | } else if ((coordinates == null || coordinates.Rows == 0)
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112 | && Content.ViewCoordinates != null) {
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113 | coordinates = Content.ViewCoordinates;
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114 | }
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115 |
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116 | DoubleMatrix weights = Content.Weights;
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117 | Permutation assignment = Content.Assignment;
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118 |
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119 | double xMin = double.MaxValue, yMin = double.MaxValue, xMax = double.MinValue, yMax = double.MinValue;
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120 | double maxWeight = double.MinValue, maxDistance = double.MinValue;
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121 | for (int i = 0; i < coordinates.Rows; i++) {
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122 | if (xMin > coordinates[i, 0]) xMin = coordinates[i, 0];
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123 | if (yMin > coordinates[i, 1]) yMin = coordinates[i, 1];
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124 | if (xMax < coordinates[i, 0]) xMax = coordinates[i, 0];
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125 | if (yMax < coordinates[i, 1]) yMax = coordinates[i, 1];
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126 |
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127 | for (int j = i + 1; j < coordinates.Rows; j++) {
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128 | if (weights[i, j] + weights[j, i] > maxWeight)
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129 | maxWeight = weights[i, j] + weights[j, i];
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130 |
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131 | if (distances[i, j] > maxDistance)
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132 | maxDistance = distances[i, j];
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133 | else if (distances[j, i] > maxDistance)
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134 | maxDistance = distances[j, i];
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135 | }
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136 | }
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137 |
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138 | int border = 20;
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139 | double xStep = xMax != xMin ? (pictureBox.Width - 2 * border) / (xMax - xMin) : 1;
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140 | double yStep = yMax != yMin ? (pictureBox.Height - 2 * border) / (yMax - yMin) : 1;
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141 |
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142 | Point[] points = new Point[coordinates.Rows];
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143 | for (int i = 0; i < coordinates.Rows; i++)
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144 | points[i] = new Point(border + ((int)((coordinates[i, 0] - xMin) * xStep)),
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145 | newBitmap.Height - (border + ((int)((coordinates[i, 1] - yMin) * yStep))));
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146 |
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147 | Random rand = new Random();
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148 | using (Graphics graphics = Graphics.FromImage(newBitmap)) {
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149 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
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150 | graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
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151 | if ((assignment != null) && (assignment.Length == coordinates.Rows) && (assignment.Validate())) {
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152 | for (int i = 0; i < assignment.Length - 1; i++) {
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153 | for (int j = i + 1; j < assignment.Length; j++) {
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154 | Point start = points[assignment[i]], end = points[assignment[j]];
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155 | string caption = String.Empty;
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156 | double d = Math.Max(distances[i, j], distances[j, i]);
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157 | if (drawDistances) {
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158 | float width = (float)Math.Ceiling(5.0 * d / maxDistance);
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159 | graphics.DrawLine(new Pen(Color.IndianRed, width), start, end);
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160 | if (distances[i, j] != distances[j, i])
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161 | caption = distances[i, j].ToString(CultureInfo.InvariantCulture.NumberFormat)
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162 | + " / " + distances[j, i].ToString(CultureInfo.InvariantCulture.NumberFormat);
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163 | else
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164 | caption = distances[i, j].ToString(CultureInfo.InvariantCulture.NumberFormat);
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165 | } else {
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166 | double w = weights[i, j] + weights[j, i];
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167 | if (w > 0) {
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168 | float width = (float)Math.Ceiling(5.0 * w / maxWeight);
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169 | graphics.DrawLine(new Pen(Color.MediumBlue, width), start, end);
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170 | caption = w.ToString(CultureInfo.InvariantCulture.NumberFormat);
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171 | }
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172 | if (!String.IsNullOrEmpty(caption)) {
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173 | double r = rand.NextDouble();
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174 | while (r < 0.2 || r > 0.8) r = rand.NextDouble();
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175 | float x = (float)(start.X + (end.X - start.X) * r + 5);
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176 | float y = (float)(start.Y + (end.Y - start.Y) * r + 5);
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177 | graphics.DrawString(caption, Font, Brushes.Black, x, y);
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178 | }
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179 | }
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180 | }
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181 | }
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182 | }
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183 | for (int i = 0; i < points.Length; i++) {
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184 | Point p = new Point(points[assignment[i]].X - 3, points[assignment[i]].Y - 3);
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185 | graphics.FillRectangle(Brushes.Black, p.X, p.Y, 8, 8);
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186 | graphics.DrawString(i.ToString(), Font, Brushes.Black, p.X, p.Y + 10);
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187 | }
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188 | }
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189 | }
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190 | pictureBox.Image = newBitmap;
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191 | if (bitmap != null) bitmap.Dispose();
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192 | bitmap = newBitmap;
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193 | }
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194 | }
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195 | }
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196 |
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197 | private void Content_PropertyChanged(object sender, PropertyChangedEventArgs e) {
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198 | if (InvokeRequired)
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199 | Invoke(new PropertyChangedEventHandler(Content_PropertyChanged), sender, e);
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200 | else {
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201 | switch (e.PropertyName) {
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202 | case "Coordinates":
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203 | case "Distances":
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204 | case "Weights":
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205 | GenerateImage();
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206 | break;
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207 | case "Assignment":
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208 | GenerateImage();
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209 | assignmentViewHost.Content = Content.Assignment;
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210 | break;
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211 | case "Quality":
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212 | break;
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213 | default:
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214 | break;
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215 | }
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216 | }
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217 | }
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218 |
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219 | private void pictureBox_SizeChanged(object sender, EventArgs e) {
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220 | GenerateImage();
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221 | }
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222 |
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223 | private void radioButton_CheckedChanged(object sender, EventArgs e) {
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224 | GenerateImage();
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225 | }
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226 | }
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227 | }
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