1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 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.Drawing;
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24 | using System.Globalization;
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25 | using System.Text;
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26 | using System.Text.RegularExpressions;
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27 | using System.Windows.Forms;
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28 | using HeuristicLab.Analysis;
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29 | using HeuristicLab.Common;
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30 | using HeuristicLab.Common.Resources;
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31 | using HeuristicLab.Data;
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32 | using HeuristicLab.Encodings.PermutationEncoding;
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33 |
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34 | namespace HeuristicLab.Problems.QuadraticAssignment.Views {
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35 | public partial class QAPVisualizationControl : UserControl {
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36 | private Bitmap bitmap;
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37 | private Bitmap defaultBitmap;
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38 | private bool showingMessage;
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39 |
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40 | #region Properties
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41 | private DoubleMatrix distances;
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42 | public DoubleMatrix Distances {
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43 | get { return distances; }
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44 | set {
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45 | distances = value;
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46 | OnRedraw();
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47 | }
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48 | }
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49 |
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50 | private DoubleMatrix weights;
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51 | public DoubleMatrix Weights {
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52 | get { return weights; }
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53 | set {
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54 | weights = value;
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55 | OnRedraw();
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56 | }
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57 | }
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58 |
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59 | private Permutation assignment;
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60 | public Permutation Assignment {
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61 | get { return assignment; }
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62 | set {
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63 | DeregisterAssignmentEvents();
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64 | assignment = value;
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65 | RegisterAssignmentEvents();
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66 | OnRedraw();
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67 | }
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68 | }
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69 | #endregion
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70 |
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71 | #region Event Handling
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72 |
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73 | private void DeregisterAssignmentEvents() {
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74 | if (Assignment != null) {
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75 | Assignment.Reset -= new EventHandler(RedrawNecessary);
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76 | Assignment.ItemChanged -= new EventHandler<EventArgs<int>>(RedrawNecessary);
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77 | }
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78 | }
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79 |
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80 | private void RegisterAssignmentEvents() {
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81 | if (Assignment != null) {
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82 | Assignment.Reset += new EventHandler(RedrawNecessary);
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83 | Assignment.ItemChanged += new EventHandler<EventArgs<int>>(RedrawNecessary);
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84 | }
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85 | }
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86 |
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87 | private void redrawButton_Click(object sender, EventArgs e) {
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88 | OnRedraw();
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89 | }
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90 |
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91 | private void radio_CheckedChanged(object sender, EventArgs e) {
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92 | RadioButton rb = (sender as RadioButton);
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93 | if (rb != null && !rb.Checked) return;
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94 | else OnRedraw();
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95 | }
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96 |
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97 | private void RedrawNecessary(object sender, EventArgs e) {
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98 | MarkRedrawNecessary();
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99 | }
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100 |
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101 | private void RedrawNecessary(object sender, EventArgs<int, int> e) {
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102 | MarkRedrawNecessary();
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103 | }
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104 |
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105 | private void pictureBox_SizeChanged(object sender, EventArgs e) {
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106 | SetupDefaultBitmap();
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107 | if (!showingMessage) MarkRedrawNecessary();
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108 | else OnRedraw();
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109 | }
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110 | #endregion
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111 |
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112 | public QAPVisualizationControl() {
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113 | InitializeComponent();
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114 | showingMessage = false;
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115 | redrawButton.Text = String.Empty;
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116 | redrawButton.Image = VSImageLibrary.Refresh;
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117 | SetupDefaultBitmap();
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118 | }
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119 |
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120 | private void SetupDefaultBitmap() {
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121 | if (defaultBitmap != null) {
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122 | defaultBitmap.Dispose();
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123 | defaultBitmap = null;
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124 | }
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125 | if (pictureBox.Width > 0 && pictureBox.Height > 0) {
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126 | defaultBitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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127 | WriteCenteredTextToBitmap(ref defaultBitmap, "No visualization available");
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128 | }
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129 | }
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130 |
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131 | private void WriteCenteredTextToBitmap(ref Bitmap bitmap, string text) {
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132 | if (bitmap == null) return;
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133 | using (Graphics g = Graphics.FromImage(bitmap)) {
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134 | g.Clear(Color.White);
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135 |
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136 | Font font = new Font(FontFamily.GenericSansSerif, 12, FontStyle.Regular);
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137 | SizeF strSize = g.MeasureString(text, font);
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138 | if (strSize.Width + 50 > pictureBox.Width) {
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139 | Match m = Regex.Match(text, @"\b\w+[.,]*\b*");
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140 | StringBuilder builder = new StringBuilder();
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141 | while (m.Success) {
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142 | builder.Append(m.Value + " ");
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143 | Match next = m.NextMatch();
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144 | if (g.MeasureString(builder.ToString() + " " + next.Value, font).Width + 50 > pictureBox.Width)
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145 | builder.AppendLine();
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146 | m = next;
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147 | }
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148 | builder.Remove(builder.Length - 1, 1);
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149 | text = builder.ToString();
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150 | strSize = g.MeasureString(text, font);
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151 | }
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152 | g.DrawString(text, font, Brushes.Black, (float)(pictureBox.Width - strSize.Width) / 2.0f, (float)(pictureBox.Height - strSize.Height) / 2.0f);
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153 | }
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154 | }
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155 |
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156 | private void OnRedraw() {
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157 | if (InvokeRequired) {
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158 | Invoke((Action)OnRedraw, null);
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159 | } else {
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160 | GenerateImage();
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161 | }
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162 | }
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163 |
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164 | private void GenerateImage() {
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165 | if (pictureBox.Width > 0 && pictureBox.Height > 0) {
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166 | Bitmap newBitmap = null;
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167 | stressLabel.Text = "-";
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168 | stressLabel.ForeColor = Color.Black;
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169 | if (distancesRadioButton.Checked && Distances != null && Distances.Rows > 0
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170 | && Distances.Rows == Distances.Columns) {
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171 | if (Distances.Rows > 50) {
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172 | newBitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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173 | WriteCenteredTextToBitmap(ref newBitmap, "Problem dimension is too large for visualization.");
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174 | showingMessage = true;
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175 | } else newBitmap = GenerateDistanceImage();
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176 | } else if (weightsRadioButton.Checked && Weights != null && Weights.Rows > 0
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177 | && Weights.Rows == Weights.Columns) {
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178 | if (Weights.Rows > 50) {
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179 | newBitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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180 | WriteCenteredTextToBitmap(ref newBitmap, "Problem dimension is too large for visualization.");
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181 | showingMessage = true;
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182 | } else newBitmap = GenerateWeightsImage();
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183 | } else if (assignmentRadioButton.Checked
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184 | && Assignment != null && Assignment.Length > 0
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185 | && Weights != null && Weights.Rows > 0
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186 | && Distances != null && Distances.Rows > 0
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187 | && Weights.Rows == Weights.Columns
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188 | && Distances.Rows == Distances.Columns
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189 | && Assignment.Length == Weights.Rows
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190 | && Assignment.Length == Distances.Rows
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191 | && Assignment.Validate()) {
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192 | if (Assignment.Length > 50) {
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193 | newBitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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194 | WriteCenteredTextToBitmap(ref newBitmap, "Problem dimension is too large for visualization.");
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195 | showingMessage = true;
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196 | } else newBitmap = GenerateAssignmentImage();
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197 | }
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198 |
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199 | pictureBox.Image = newBitmap != null ? newBitmap : defaultBitmap;
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200 | if (bitmap != null) bitmap.Dispose();
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201 | if (newBitmap != null) bitmap = newBitmap;
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202 | else {
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203 | bitmap = null;
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204 | showingMessage = true;
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205 | }
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206 | }
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207 | }
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208 |
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209 | private void MarkRedrawNecessary() {
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210 | if (pictureBox.Width > 0 && pictureBox.Height > 0) {
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211 | Bitmap newBitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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212 | stressLabel.Text = "-";
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213 | stressLabel.ForeColor = Color.Black;
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214 | WriteCenteredTextToBitmap(ref newBitmap, "Please refresh view.");
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215 | showingMessage = false; // we're showing a message, but we should be showing the visualization, so this is false
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216 |
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217 | pictureBox.Image = newBitmap != null ? newBitmap : defaultBitmap;
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218 | if (bitmap != null) bitmap.Dispose();
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219 | if (newBitmap != null) bitmap = newBitmap;
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220 | else bitmap = null;
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221 | }
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222 | }
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223 |
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224 | #region Draw distances
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225 | private Bitmap GenerateDistanceImage() {
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226 | if ((pictureBox.Width > 0) && (pictureBox.Height > 0)) {
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227 | Bitmap newBitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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228 |
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229 | DoubleMatrix coordinates;
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230 | double stress = double.NaN;
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231 | try {
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232 | coordinates = MultidimensionalScaling.KruskalShepard(distances);
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233 | stress = MultidimensionalScaling.CalculateNormalizedStress(distances, coordinates);
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234 | stressLabel.Text = stress.ToString("0.00", CultureInfo.CurrentCulture.NumberFormat);
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235 | if (stress < 0.1) stressLabel.ForeColor = Color.DarkGreen;
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236 | else if (stress < 0.2) stressLabel.ForeColor = Color.DarkOrange;
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237 | else stressLabel.ForeColor = Color.DarkRed;
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238 | } catch {
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239 | WriteCenteredTextToBitmap(ref newBitmap, "Distance matrix is not symmetric");
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240 | showingMessage = true;
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241 | stressLabel.Text = "-";
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242 | stressLabel.ForeColor = Color.Black;
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243 | return newBitmap;
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244 | }
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245 | double xMin = double.MaxValue, yMin = double.MaxValue, xMax = double.MinValue, yMax = double.MinValue;
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246 | double maxDistance = double.MinValue;
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247 | for (int i = 0; i < coordinates.Rows; i++) {
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248 | if (xMin > coordinates[i, 0]) xMin = coordinates[i, 0];
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249 | if (yMin > coordinates[i, 1]) yMin = coordinates[i, 1];
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250 | if (xMax < coordinates[i, 0]) xMax = coordinates[i, 0];
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251 | if (yMax < coordinates[i, 1]) yMax = coordinates[i, 1];
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252 |
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253 | for (int j = i + 1; j < coordinates.Rows; j++) {
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254 | if (distances[i, j] > maxDistance) maxDistance = distances[i, j];
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255 | if (distances[j, i] > maxDistance) maxDistance = distances[j, i];
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256 | }
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257 | }
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258 |
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259 | int border = 20;
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260 | double xStep = xMax != xMin ? (pictureBox.Width - 2 * border) / (xMax - xMin) : 1;
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261 | double yStep = yMax != yMin ? (pictureBox.Height - 2 * border) / (yMax - yMin) : 1;
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262 |
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263 | Point[] points = new Point[coordinates.Rows];
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264 | for (int i = 0; i < coordinates.Rows; i++)
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265 | points[i] = new Point(border + ((int)((coordinates[i, 0] - xMin) * xStep)),
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266 | newBitmap.Height - (border + ((int)((coordinates[i, 1] - yMin) * yStep))));
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267 |
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268 | Random rand = new Random();
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269 | using (Graphics graphics = Graphics.FromImage(newBitmap)) {
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270 | graphics.Clear(Color.White);
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271 | graphics.DrawString("Showing locations layed out according to their distances", Font, Brushes.Black, 5, 2);
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272 |
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273 | for (int i = 0; i < coordinates.Rows - 1; i++) {
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274 | for (int j = i + 1; j < coordinates.Rows; j++) {
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275 | Point start = points[i], end = points[j];
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276 | string caption = String.Empty;
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277 | double d = Math.Max(distances[i, j], distances[j, i]);
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278 | float width = (float)Math.Ceiling(5.0 * d / maxDistance);
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279 | if (d > 0) {
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280 | graphics.DrawLine(new Pen(Color.IndianRed, width), start, end);
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281 | if (distances[i, j] != distances[j, i])
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282 | caption = distances[i, j].ToString(CultureInfo.InvariantCulture.NumberFormat)
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283 | + " / " + distances[j, i].ToString(CultureInfo.InvariantCulture.NumberFormat);
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284 | else
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285 | caption = distances[i, j].ToString(CultureInfo.InvariantCulture.NumberFormat);
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286 | }
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287 | if (!String.IsNullOrEmpty(caption)) {
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288 | double r = rand.NextDouble();
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289 | while (r < 0.2 || r > 0.8) r = rand.NextDouble();
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290 | float x = (float)(start.X + (end.X - start.X) * r + 5);
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291 | float y = (float)(start.Y + (end.Y - start.Y) * r + 5);
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292 | graphics.DrawString(caption, Font, Brushes.Black, x, y);
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293 | }
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294 | }
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295 | }
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296 |
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297 | for (int i = 0; i < points.Length; i++) {
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298 | Point p = new Point(points[i].X - 3, points[i].Y - 3);
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299 | graphics.FillRectangle(Brushes.Black, p.X, p.Y, 8, 8);
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300 | graphics.DrawString(i.ToString(), Font, Brushes.Black, p.X, p.Y + 10);
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301 | }
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302 | }
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303 | showingMessage = false;
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304 | return newBitmap;
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305 | }
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306 | return null;
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307 | }
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308 | #endregion
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309 |
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310 | #region Draw weights
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311 | private Bitmap GenerateWeightsImage() {
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312 | if ((pictureBox.Width > 0) && (pictureBox.Height > 0)) {
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313 | Bitmap newBitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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314 |
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315 | double maxWeight = double.MinValue;
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316 | for (int i = 0; i < weights.Rows; i++)
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317 | for (int j = i + 1; j < weights.Rows; j++) {
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318 | if (weights[i, j] > maxWeight) maxWeight = weights[i, j];
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319 | if (weights[j, i] > maxWeight) maxWeight = weights[j, i];
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320 | }
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321 |
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322 | DoubleMatrix distances = new DoubleMatrix(weights.Rows, weights.Columns);
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323 | for (int i = 0; i < distances.Rows; i++)
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324 | for (int j = 0; j < distances.Columns; j++) {
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325 | if (weights[i, j] == 0) distances[i, j] = double.NaN;
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326 | else distances[i, j] = maxWeight / weights[i, j];
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327 | }
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328 |
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329 | DoubleMatrix coordinates;
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330 | double stress = double.NaN;
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331 | try {
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332 | coordinates = MultidimensionalScaling.KruskalShepard(distances);
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333 | stress = MultidimensionalScaling.CalculateNormalizedStress(distances, coordinates);
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334 | stressLabel.Text = stress.ToString("0.00", CultureInfo.CurrentCulture.NumberFormat);
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335 | if (stress < 0.1) stressLabel.ForeColor = Color.DarkGreen;
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336 | else if (stress < 0.2) stressLabel.ForeColor = Color.DarkOrange;
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337 | else stressLabel.ForeColor = Color.DarkRed;
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338 | } catch {
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339 | WriteCenteredTextToBitmap(ref newBitmap, "Weights matrix is not symmetric");
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340 | showingMessage = true;
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341 | stressLabel.Text = "-";
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342 | stressLabel.ForeColor = Color.Black;
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343 | return newBitmap;
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344 | }
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345 | double xMin = double.MaxValue, yMin = double.MaxValue, xMax = double.MinValue, yMax = double.MinValue;
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346 | for (int i = 0; i < coordinates.Rows; i++) {
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347 | if (xMin > coordinates[i, 0]) xMin = coordinates[i, 0];
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348 | if (yMin > coordinates[i, 1]) yMin = coordinates[i, 1];
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349 | if (xMax < coordinates[i, 0]) xMax = coordinates[i, 0];
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350 | if (yMax < coordinates[i, 1]) yMax = coordinates[i, 1];
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351 | }
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352 |
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353 | int border = 20;
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354 | double xStep = xMax != xMin ? (pictureBox.Width - 2 * border) / (xMax - xMin) : 1;
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355 | double yStep = yMax != yMin ? (pictureBox.Height - 2 * border) / (yMax - yMin) : 1;
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356 |
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357 | Point[] points = new Point[coordinates.Rows];
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358 | for (int i = 0; i < coordinates.Rows; i++)
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359 | points[i] = new Point(border + ((int)((coordinates[i, 0] - xMin) * xStep)),
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360 | newBitmap.Height - (border + ((int)((coordinates[i, 1] - yMin) * yStep))));
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361 |
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362 | Random rand = new Random();
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363 | using (Graphics graphics = Graphics.FromImage(newBitmap)) {
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364 | graphics.Clear(Color.White);
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365 | graphics.DrawString("Showing facilities layed out according to their weights", Font, Brushes.Black, 5, 2);
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366 |
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367 | for (int i = 0; i < coordinates.Rows - 1; i++) {
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368 | for (int j = i + 1; j < coordinates.Rows; j++) {
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369 | Point start = points[i], end = points[j];
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370 | string caption = String.Empty;
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371 | double d = Math.Max(distances[i, j], distances[j, i]);
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372 | double w = weights[i, j];
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373 | if (w > 0) {
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374 | float width = (float)Math.Ceiling(3.0 * w / maxWeight);
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375 | graphics.DrawLine(new Pen(Color.MediumBlue, width), start, end);
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376 | caption = w.ToString(CultureInfo.InvariantCulture.NumberFormat);
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377 | }
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378 | if (!String.IsNullOrEmpty(caption)) {
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379 | double r = rand.NextDouble();
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380 | while (r < 0.2 || r > 0.8) r = rand.NextDouble();
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381 | float x = (float)(start.X + (end.X - start.X) * r + 5);
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382 | float y = (float)(start.Y + (end.Y - start.Y) * r + 5);
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383 | graphics.DrawString(caption, Font, Brushes.Black, x, y);
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384 | }
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385 | }
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386 | }
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387 | for (int i = 0; i < points.Length; i++) {
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388 | Point p = new Point(points[i].X - 3, points[i].Y - 3);
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389 | graphics.FillRectangle(Brushes.Black, p.X, p.Y, 8, 8);
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390 | graphics.DrawString(i.ToString(), Font, Brushes.Black, p.X, p.Y + 10);
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391 | }
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392 | }
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393 | showingMessage = false;
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394 | return newBitmap;
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395 | }
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396 | return null;
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397 | }
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398 | #endregion
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399 |
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400 | #region Draw assignment
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401 | private Bitmap GenerateAssignmentImage() {
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402 | if ((pictureBox.Width > 0) && (pictureBox.Height > 0)) {
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403 | Bitmap newBitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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404 |
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405 | for (int i = 0; i < distances.Rows; i++) {
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406 | for (int j = i + 1; j < distances.Rows; j++) {
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407 | if (distances[i, j] != distances[j, i]) {
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408 | WriteCenteredTextToBitmap(ref newBitmap, "Distance matrix is not symmetric");
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409 | stressLabel.Text = "-";
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410 | showingMessage = true;
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411 | return newBitmap;
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412 | }
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413 | if (weights[i, j] != weights[j, i]) {
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414 | WriteCenteredTextToBitmap(ref newBitmap, "Weights matrix is not symmetric");
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415 | stressLabel.Text = "-";
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416 | showingMessage = true;
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417 | return newBitmap;
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418 | }
|
---|
419 | }
|
---|
420 | }
|
---|
421 |
|
---|
422 | DoubleMatrix coordinates = null;
|
---|
423 | double stress = double.NaN;
|
---|
424 | try {
|
---|
425 | coordinates = MultidimensionalScaling.KruskalShepard(distances);
|
---|
426 | stress = MultidimensionalScaling.CalculateNormalizedStress(distances, coordinates);
|
---|
427 | stressLabel.Text = stress.ToString("0.00", CultureInfo.CurrentCulture.NumberFormat);
|
---|
428 | if (stress < 0.1) stressLabel.ForeColor = Color.DarkGreen;
|
---|
429 | else if (stress < 0.2) stressLabel.ForeColor = Color.DarkOrange;
|
---|
430 | else stressLabel.ForeColor = Color.DarkRed;
|
---|
431 | } catch {
|
---|
432 | WriteCenteredTextToBitmap(ref newBitmap, "Unknown error");
|
---|
433 | showingMessage = true;
|
---|
434 | stressLabel.Text = "-";
|
---|
435 | stressLabel.ForeColor = Color.Black;
|
---|
436 | return newBitmap;
|
---|
437 | }
|
---|
438 |
|
---|
439 | double xMin = double.MaxValue, yMin = double.MaxValue, xMax = double.MinValue, yMax = double.MinValue;
|
---|
440 | double maxWeight = double.MinValue;
|
---|
441 | for (int i = 0; i < coordinates.Rows; i++) {
|
---|
442 | if (xMin > coordinates[i, 0]) xMin = coordinates[i, 0];
|
---|
443 | if (yMin > coordinates[i, 1]) yMin = coordinates[i, 1];
|
---|
444 | if (xMax < coordinates[i, 0]) xMax = coordinates[i, 0];
|
---|
445 | if (yMax < coordinates[i, 1]) yMax = coordinates[i, 1];
|
---|
446 |
|
---|
447 | for (int j = i + 1; j < coordinates.Rows; j++) {
|
---|
448 | if (weights[i, j] > maxWeight) maxWeight = weights[i, j];
|
---|
449 | }
|
---|
450 | }
|
---|
451 |
|
---|
452 | int border = 20;
|
---|
453 | double xStep = xMax != xMin ? (pictureBox.Width - 2 * border) / (xMax - xMin) : 1;
|
---|
454 | double yStep = yMax != yMin ? (pictureBox.Height - 2 * border) / (yMax - yMin) : 1;
|
---|
455 |
|
---|
456 | Point[] points = new Point[coordinates.Rows];
|
---|
457 | for (int i = 0; i < coordinates.Rows; i++)
|
---|
458 | points[i] = new Point(border + ((int)((coordinates[i, 0] - xMin) * xStep)),
|
---|
459 | newBitmap.Height - (border + ((int)((coordinates[i, 1] - yMin) * yStep))));
|
---|
460 |
|
---|
461 | Random rand = new Random();
|
---|
462 | using (Graphics graphics = Graphics.FromImage(newBitmap)) {
|
---|
463 | graphics.Clear(Color.White);
|
---|
464 | for (int i = 0; i < assignment.Length - 1; i++) {
|
---|
465 | for (int j = i + 1; j < assignment.Length; j++) {
|
---|
466 | Point start, end;
|
---|
467 | string caption = String.Empty;
|
---|
468 | double d = distances[i, j];
|
---|
469 | start = points[assignment[i]];
|
---|
470 | end = points[assignment[j]];
|
---|
471 | double w = weights[i, j];
|
---|
472 | if (w > 0) {
|
---|
473 | float width = (float)Math.Ceiling(4.0 * w / maxWeight);
|
---|
474 | graphics.DrawLine(new Pen(Color.MediumBlue, width), start, end);
|
---|
475 | caption = w.ToString(CultureInfo.InvariantCulture.NumberFormat);
|
---|
476 | }
|
---|
477 | if (!String.IsNullOrEmpty(caption)) {
|
---|
478 | double r = rand.NextDouble();
|
---|
479 | while (r < 0.2 || r > 0.8) r = rand.NextDouble();
|
---|
480 | float x = (float)(start.X + (end.X - start.X) * r + 5);
|
---|
481 | float y = (float)(start.Y + (end.Y - start.Y) * r + 5);
|
---|
482 | graphics.DrawString(caption, Font, Brushes.Black, x, y);
|
---|
483 | }
|
---|
484 | }
|
---|
485 | }
|
---|
486 |
|
---|
487 | for (int i = 0; i < points.Length; i++) {
|
---|
488 | Point p = new Point(points[i].X - 3, points[i].Y - 3);
|
---|
489 | graphics.FillRectangle(Brushes.Black, p.X, p.Y, 8, 8);
|
---|
490 | graphics.DrawString(i.ToString(), Font, Brushes.Black, p.X, p.Y + 10);
|
---|
491 | }
|
---|
492 | }
|
---|
493 | showingMessage = false;
|
---|
494 | return newBitmap;
|
---|
495 | }
|
---|
496 | return null;
|
---|
497 | }
|
---|
498 | #endregion
|
---|
499 |
|
---|
500 | private void CustomDispose(bool disposing) {
|
---|
501 | DeregisterAssignmentEvents();
|
---|
502 | if (bitmap != null) bitmap.Dispose();
|
---|
503 | bitmap = null;
|
---|
504 | if (defaultBitmap != null) {
|
---|
505 | defaultBitmap.Dispose();
|
---|
506 | defaultBitmap = null;
|
---|
507 | }
|
---|
508 | }
|
---|
509 | }
|
---|
510 | }
|
---|