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 HeuristicLab.Common;
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25 | using HeuristicLab.Problems.TravelingSalesman.Views;
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26 |
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27 | namespace HeuristicLab.Problems.Orienteering.Views {
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28 | public class OrienteeringVisualizer : TSPVisualizer {
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29 | public IOrienteeringProblemData Data { get; set; }
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30 | public bool IsFeasible { get; set; }
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31 |
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32 | public override Bitmap Draw(int width, int height) {
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33 | var coordinates = Coordinates;
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34 | var integerVector = Tour;
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35 | var bitmap = new Bitmap(width, height);
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36 |
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37 | if ((coordinates != null) && (coordinates.Rows > 0) && (coordinates.Columns == 2)
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38 | && (coordinates.Rows == Data.Cities)) {
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39 | double xMin = double.MaxValue, yMin = double.MaxValue, xMax = double.MinValue, yMax = double.MinValue;
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40 | for (int i = 0; i < coordinates.Rows; i++) {
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41 | if (xMin > coordinates[i, 0]) xMin = coordinates[i, 0];
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42 | if (yMin > coordinates[i, 1]) yMin = coordinates[i, 1];
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43 | if (xMax < coordinates[i, 0]) xMax = coordinates[i, 0];
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44 | if (yMax < coordinates[i, 1]) yMax = coordinates[i, 1];
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45 | }
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46 |
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47 | int border = 20;
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48 | double xStep = xMax != xMin ? (width - 2 * border) / (xMax - xMin) : 1;
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49 | double yStep = yMax != yMin ? (height - 2 * border) / (yMax - yMin) : 1;
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50 |
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51 | Point[] points = new Point[coordinates.Rows];
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52 | for (int i = 0; i < coordinates.Rows; i++)
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53 | points[i] = new Point(border + ((int)((coordinates[i, 0] - xMin) * xStep)),
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54 | bitmap.Height - (border + ((int)((coordinates[i, 1] - yMin) * yStep))));
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55 |
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56 | using (Graphics graphics = Graphics.FromImage(bitmap)) {
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57 | if (integerVector != null && integerVector.Length > 1) {
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58 | Point[] tour = new Point[integerVector.Length];
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59 | for (int i = 0; i < integerVector.Length; i++) {
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60 | tour[i] = points[integerVector[i]];
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61 | }
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62 | bool visualizePenalty = !IsFeasible;
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63 | graphics.DrawLines(visualizePenalty ? Pens.Red : Pens.Black, tour);
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64 | }
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65 |
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66 | double scoreMin = double.MaxValue;
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67 | double scoreMax = double.MinValue;
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68 | for (int i = 0; i < points.Length; i++) {
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69 | var score = Data.GetScore(i);
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70 | if (score < scoreMin) scoreMin = score;
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71 | if (score > scoreMax) scoreMax = score;
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72 | }
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73 | double scoreRange = scoreMax - scoreMin;
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74 | for (int i = 0; i < points.Length; i++) {
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75 | double score = Data.GetScore(i);
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76 | int size = scoreRange.IsAlmost(0.0)
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77 | ? 6
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78 | : (int)Math.Round(((score - scoreMin) / scoreRange) * 8 + 2);
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79 | graphics.FillRectangle(Brushes.Red, points[i].X - size / 2, points[i].Y - size / 2, size, size);
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80 | }
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81 | int startingPoint = Data.StartingPoint;
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82 | int terminalPoint = Data.TerminalPoint;
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83 | Font font = new Font(FontFamily.GenericSansSerif, 10, FontStyle.Regular);
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84 | var beginSize = graphics.MeasureString("Begin", font);
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85 | if (startingPoint >= 0 && startingPoint < points.Length)
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86 | graphics.DrawString("Begin", font, Brushes.Black, points[startingPoint].X - beginSize.Width, points[startingPoint].Y - beginSize.Height);
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87 | if (terminalPoint >= 0 && terminalPoint < points.Length)
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88 | graphics.DrawString("End", font, Brushes.Black, points[terminalPoint].X, points[terminalPoint].Y);
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89 | }
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90 | } else {
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91 | using (Graphics graphics = Graphics.FromImage(bitmap)) {
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92 | graphics.Clear(Color.White);
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93 | Font font = new Font(FontFamily.GenericSansSerif, 12, FontStyle.Regular);
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94 | string text = "No coordinates defined or in wrong format.";
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95 | SizeF strSize = graphics.MeasureString(text, font);
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96 | graphics.DrawString(text, font, Brushes.Black, (float)(width - strSize.Width) / 2.0f, (float)(height - strSize.Height) / 2.0f);
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97 | }
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98 | }
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99 | return bitmap;
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100 | }
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101 | }
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102 | }
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