source: branches/PerformanceComparison/HeuristicLab.OptimizationExpertSystem/3.3/Views/UnderstandingProblemInstanceView.cs @ 13751

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using HeuristicLab.Core;
using HeuristicLab.MainForm;
using HeuristicLab.OptimizationExpertSystem.Common;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Windows.Forms.DataVisualization.Charting;

namespace HeuristicLab.OptimizationExpertSystem {
  [View("Understanding Problem Instance")]
  [Content(typeof(KnowledgeCenter), IsDefaultView = false)]
  public sealed partial class UnderstandingProblemInstanceView : KnowledgeCenterViewBase {
    private bool SuppressEvents { get; set; }

    public UnderstandingProblemInstanceView() {
      InitializeComponent();
    }

    protected override void OnContentChanged() {
      base.OnContentChanged();
      if (Content == null) {
        problemInstancesView.Content = null;
        instanceMapChart.Series["InstancesSeries"].Points.Clear();
        instanceMapChart.Series["CurrentInstanceSeries"].Points.Clear();
      } else {
        problemInstancesView.Content = Content.ProblemInstances;
        UpdateProjectionComboBox();
        UpdateSizeComboBox();
      }
    }

    #region Content Event Handlers
    protected override void OnProblemChanged() {
      base.OnProblemChanged();
      SetEnabledStateOfControls();
    }

    protected override void OnProblemInstancesChanged() {
      base.OnProblemInstancesChanged();
      if (Content.ProblemInstances.UpdateOfRunsInProgress) return;
      UpdateProjectionComboBox();
      UpdateSizeComboBox();
      UpdateProjection();
    }
    #endregion

    private void UpdateProjectionComboBox() {
      try {
        SuppressEvents = true;
        var selected = projectionComboBox.SelectedIndex >= 0 ? (string)projectionComboBox.SelectedItem : null;
        projectionComboBox.Items.Clear();
        foreach (var str in GetProjections()) {
          projectionComboBox.Items.Add(str);
          if (selected == str) projectionComboBox.SelectedItem = str;
        }
        if (selected == null && projectionComboBox.Items.Count > 0)
          projectionComboBox.SelectedIndex = 0;
      } finally { SuppressEvents = false; }
    }

    private void UpdateSizeComboBox() {
      try {
        SuppressEvents = true;
        var selected = sizeComboBox.SelectedIndex >= 0 ? (string)sizeComboBox.SelectedItem : null;
        sizeComboBox.Items.Clear();
        sizeComboBox.Items.Add(string.Empty);
        foreach (var str in Content.ProblemInstances.ResultNames.Where(x => !(x.StartsWith("Projection.") && (x.EndsWith(".X") || x.EndsWith(".Y"))))) {
          sizeComboBox.Items.Add(str);
          if (selected == str) sizeComboBox.SelectedItem = str;
        }
        if (selected == null && sizeComboBox.Items.Count > 0)
          sizeComboBox.SelectedIndex = 0;
      } finally { SuppressEvents = false; }
    }
    
    private IEnumerable<string> GetProjections() {
      return Content.ProblemInstances
        .SelectMany(x => x.Results.Where(y => Regex.IsMatch(y.Key, "^Projection[.].*[.][XY]$")))
        .Select(x => Regex.Match(x.Key, "Projection[.](?<g>.*)[.][XY]").Groups["g"].Value)
        .Distinct();
    }

    private void UpdateProjection() {
      if (InvokeRequired) { Invoke((Action)UpdateProjection); return; }

      var instancesSeries = instanceMapChart.Series["InstancesSeries"];
      var currentInstanceSeries = instanceMapChart.Series["CurrentInstanceSeries"];

      if (projectionComboBox.SelectedIndex < 0) {
        instancesSeries.Points.Clear();
        currentInstanceSeries.Points.Clear();
        return;
      }

      var projection = (string)projectionComboBox.SelectedItem;
      var size = sizeComboBox.SelectedIndex >= 0 ? (string)sizeComboBox.SelectedItem : string.Empty;

      DoProjectProblemInstances(instancesSeries, currentInstanceSeries, projection, size, invPropCheckBox.Checked);
    }

    private void DoProjectProblemInstances(Series instancesSeries, Series currentInstanceSeries, string projection, string size, bool invProp) {
      instancesSeries.Points.Clear();
      currentInstanceSeries.Points.Clear();

      double maxSize = 0, minSize = 0;
      if (!string.IsNullOrEmpty(size)) {
        var sizes = Content.ProblemInstances.Where(x => x.Results.ContainsKey(size)).Select(x => x.Results[size]).OfType<Data.DoubleValue>().Where(x => !double.IsNaN(x.Value)).ToList();
        if (sizes.Count > 0) {
          maxSize = sizes.Max(x => x.Value);
          minSize = sizes.Min(x => x.Value);
        }
      }
      foreach (var run in Content.ProblemInstances) {
        var xKey = "Projection." + projection + ".X";
        var yKey = "Projection." + projection + ".Y";
        if (!run.Results.ContainsKey(xKey) || !run.Results.ContainsKey(yKey)
            || !(run.Results[xKey] is Data.DoubleValue) || !(run.Results[yKey] is Data.DoubleValue)) continue;
        var x = ((Data.DoubleValue)run.Results[xKey]).Value;
        var y = ((Data.DoubleValue)run.Results[yKey]).Value;
        var dataPoint = new DataPoint(x, y) {
          Label = run.Name,
        };
        IItem item;
        if (maxSize > minSize && run.Results.TryGetValue(size, out item)) {
          var dItem = item as Data.DoubleValue;
          if (dItem != null) {
            if (double.IsNaN(dItem.Value))
              dataPoint.MarkerSize = 1;
            else {
              if (invProp) dataPoint.MarkerSize = (int)Math.Round(5 + 15 * (maxSize - dItem.Value) / (maxSize - minSize));
              else dataPoint.MarkerSize = (int)Math.Round(5 + 15 * (dItem.Value - minSize) / (maxSize - minSize));
            }
          }
        } else if (maxSize == minSize) {
          dataPoint.MarkerSize = instancesSeries.MarkerSize;
        } else dataPoint.MarkerSize = 1;

        if (Content.IsCurrentInstance(run)) currentInstanceSeries.Points.Add(dataPoint);
        else instancesSeries.Points.Add(dataPoint);
      }
    }

    #region Control Event Handlers
    private void ProjectionComboBoxOnSelectedIndexChanged(object sender, EventArgs e) {
      UpdateProjection();
    }

    private void SizeComboBoxOnSelectedIndexChanged(object sender, EventArgs e) {
      UpdateProjection();
    }

    private void InvPropCheckBoxOnCheckedChanged(object sender, EventArgs e) {
      UpdateProjection();
    }
    #endregion
  }
}