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.Collections.Generic;
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24 | using System.Drawing;
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25 | using System.Linq;
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26 | using HeuristicLab.Common;
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27 | using HeuristicLab.Core;
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28 | using HeuristicLab.Core.Views;
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29 | using HeuristicLab.MainForm;
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30 |
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31 | namespace HeuristicLab.Analysis.Views {
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32 | [View("Scatter Plot")]
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33 | [Content(typeof(ParetoFrontScatterPlot<>))]
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34 | public partial class ParetoFrontScatterPlotView<T> : ItemView where T : class, IItem {
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35 |
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36 | private readonly ScatterPlot scatterPlot;
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37 | private LinkedList<ScatterPlotDataRow> frontsRow;
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38 | private ScatterPlotDataRow bestKnownFrontRow;
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39 |
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40 | private int oldObjectives = -1;
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41 |
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42 | private bool suppressEvents;
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43 |
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44 | public new ParetoFrontScatterPlot<T> Content {
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45 | get { return (ParetoFrontScatterPlot<T>)base.Content; }
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46 | set { base.Content = value; }
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47 | }
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48 |
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49 | public ParetoFrontScatterPlotView() {
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50 | InitializeComponent();
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51 |
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52 | scatterPlot = new ScatterPlot();
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53 | }
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54 |
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55 | protected override void OnContentChanged() {
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56 | base.OnContentChanged();
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57 |
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58 | if (Content == null) {
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59 | scatterPlotView.Content = null;
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60 | xAxisComboBox.Items.Clear();
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61 | xAxisComboBox.SelectedIndex = -1;
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62 | yAxisComboBox.Items.Clear();
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63 | yAxisComboBox.SelectedIndex = -1;
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64 | return;
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65 | }
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66 |
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67 | scatterPlotView.Content = scatterPlot;
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68 |
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69 | if (oldObjectives != Content.Objectives)
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70 | UpdateAxisComboBoxes();
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71 |
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72 | UpdateChartData();
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73 |
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74 | oldObjectives = Content.Objectives;
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75 | }
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76 |
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77 | private void UpdateChartData() {
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78 | if (InvokeRequired) {
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79 | Invoke((Action)UpdateChartData);
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80 | return;
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81 | }
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82 |
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83 | int xDimIndex = xAxisComboBox.SelectedIndex;
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84 | int yDimIndex = yAxisComboBox.SelectedIndex;
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85 |
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86 | if (Content.BestKnownFront != null && Content.BestKnownFront.Count > 0) {
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87 | if (bestKnownFrontRow == null) {
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88 | bestKnownFrontRow = new ScatterPlotDataRow("Best Known Pareto Front", string.Empty, Enumerable.Empty<Point2D<double>>()) {
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89 | VisualProperties = {
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90 | PointSize = 4,
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91 | PointStyle = ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Square,
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92 | Color = Color.Gray
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93 | }
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94 | };
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95 | scatterPlot.Rows.Add(bestKnownFrontRow);
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96 | }
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97 | bestKnownFrontRow.Points.Replace(CreatePoints(Content.BestKnownFront, null, xDimIndex, yDimIndex));
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98 | } else if (bestKnownFrontRow != null) {
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99 | scatterPlot.Rows.Remove(bestKnownFrontRow);
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100 | bestKnownFrontRow = null;
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101 | }
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102 |
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103 | if (Content.Fronts == null || Content.Fronts.Count == 0) {
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104 | if (frontsRow != null) {
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105 | foreach (var row in frontsRow) scatterPlot.Rows.Remove(row);
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106 | frontsRow = null;
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107 | }
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108 | } else {
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109 | if (frontsRow == null) frontsRow = new LinkedList<ScatterPlotDataRow>();
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110 | var row = frontsRow.First;
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111 | var front = 0;
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112 | while (front < Content.Fronts.Count) {
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113 | if (Content.Fronts[front].Length == 0) break;
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114 | if(row == null) {
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115 | row = frontsRow.AddLast(new ScatterPlotDataRow("Front " + front, "Points on Front #" + front, Enumerable.Empty<Point2D<double>>()) {
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116 | VisualProperties = {
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117 | PointSize = 8,
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118 | PointStyle = front == 0 ? ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Diamond : ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Circle,
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119 | Color = front == 0 ? Color.Goldenrod : Color.DodgerBlue
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120 | }
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121 | });
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122 | scatterPlot.Rows.Add(row.Value);
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123 | }
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124 | row.Value.Points.Replace(CreatePoints(Content.Fronts[front], Content.Items[front], xDimIndex, yDimIndex));
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125 | row = row.Next;
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126 | front++;
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127 | }
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128 | while (row != null) {
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129 | scatterPlot.Rows.Remove(row.Value);
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130 | var next = row.Next;
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131 | frontsRow.Remove(row);
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132 | row = next;
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133 | }
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134 | }
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135 | }
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136 |
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137 | private void UpdateAxisComboBoxes() {
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138 | try {
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139 | suppressEvents = true;
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140 |
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141 | string prevSelectedX = (string)xAxisComboBox.SelectedItem;
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142 | string prevSelectedY = (string)yAxisComboBox.SelectedItem;
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143 |
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144 | xAxisComboBox.Items.Clear();
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145 | yAxisComboBox.Items.Clear();
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146 |
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147 | // Add Objectives first
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148 | for (int i = 0; i < Content.Objectives; i++) {
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149 | xAxisComboBox.Items.Add("Objective " + i);
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150 | yAxisComboBox.Items.Add("Objective " + i);
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151 | }
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152 |
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153 | // Selection
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154 | int count = xAxisComboBox.Items.Count;
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155 | if (count > 0) {
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156 | if (prevSelectedX != null && xAxisComboBox.Items.Contains(prevSelectedX))
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157 | xAxisComboBox.SelectedItem = prevSelectedX;
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158 | else xAxisComboBox.SelectedIndex = 0;
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159 |
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160 | if (prevSelectedY != null && yAxisComboBox.Items.Contains(prevSelectedY))
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161 | yAxisComboBox.SelectedItem = prevSelectedY;
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162 | else yAxisComboBox.SelectedIndex = Math.Min(1, count - 1);
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163 | } else {
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164 | xAxisComboBox.SelectedIndex = -1;
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165 | yAxisComboBox.SelectedIndex = -1;
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166 | }
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167 |
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168 | UpdateAxisDescription();
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169 | } finally {
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170 | suppressEvents = false;
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171 | }
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172 | }
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173 |
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174 | private void UpdateAxisDescription() {
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175 | scatterPlot.VisualProperties.XAxisTitle = (string)xAxisComboBox.SelectedItem;
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176 | scatterPlot.VisualProperties.YAxisTitle = (string)yAxisComboBox.SelectedItem;
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177 | }
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178 |
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179 | private static Point2D<double>[] CreatePoints(IList<double[]> front, T[] solutions, int xDimIndex, int yDimIndex) {
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180 | if (front == null || front.Count == 0) return new Point2D<double>[0];
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181 |
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182 | var points = new Point2D<double>[front.Count];
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183 | for (int i = 0; i < front.Count; i++) {
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184 | points[i] = new Point2D<double>(front[i][xDimIndex], front[i][yDimIndex], solutions != null ? solutions[i] : null);
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185 | }
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186 | return points;
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187 | }
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188 |
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189 | #region Event Handler
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190 | private void axisComboBox_SelectedIndexChanged(object sender, EventArgs e) {
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191 | if (suppressEvents) return;
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192 | UpdateAxisDescription();
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193 | UpdateChartData();
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194 | }
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195 | #endregion
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196 | }
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197 | } |
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