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source: branches/2521_ProblemRefactoring/HeuristicLab.Problems.Orienteering.Views/3.3/OrienteeringVisualizer.cs @ 17533

Last change on this file since 17533 was 17533, checked in by abeham, 4 years ago

#2521: Unified architecture

File size: 4.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Drawing;
24using HeuristicLab.Common;
25using HeuristicLab.Problems.TravelingSalesman.Views;
26
27namespace HeuristicLab.Problems.Orienteering.Views {
28  public class OrienteeringVisualizer : TSPVisualizer {
29    public IOrienteeringProblemData Data { get; set; }
30    public bool IsFeasible { get; set; }
31
32    public override Bitmap Draw(int width, int height) {
33      var coordinates = Coordinates;
34      var integerVector = Tour;
35      var bitmap = new Bitmap(width, height);
36
37      if ((coordinates != null) && (coordinates.Rows > 0) && (coordinates.Columns == 2)
38        && (coordinates.Rows == Data.Cities)) {
39        double xMin = double.MaxValue, yMin = double.MaxValue, xMax = double.MinValue, yMax = double.MinValue;
40        for (int i = 0; i < coordinates.Rows; i++) {
41          if (xMin > coordinates[i, 0]) xMin = coordinates[i, 0];
42          if (yMin > coordinates[i, 1]) yMin = coordinates[i, 1];
43          if (xMax < coordinates[i, 0]) xMax = coordinates[i, 0];
44          if (yMax < coordinates[i, 1]) yMax = coordinates[i, 1];
45        }
46
47        int border = 20;
48        double xStep = xMax != xMin ? (width - 2 * border) / (xMax - xMin) : 1;
49        double yStep = yMax != yMin ? (height - 2 * border) / (yMax - yMin) : 1;
50
51        Point[] points = new Point[coordinates.Rows];
52        for (int i = 0; i < coordinates.Rows; i++)
53          points[i] = new Point(border + ((int)((coordinates[i, 0] - xMin) * xStep)),
54                                bitmap.Height - (border + ((int)((coordinates[i, 1] - yMin) * yStep))));
55
56        using (Graphics graphics = Graphics.FromImage(bitmap)) {
57          if (integerVector != null && integerVector.Length > 1) {
58            Point[] tour = new Point[integerVector.Length];
59            for (int i = 0; i < integerVector.Length; i++) {
60              tour[i] = points[integerVector[i]];
61            }
62            bool visualizePenalty = !IsFeasible;
63            graphics.DrawLines(visualizePenalty ? Pens.Red : Pens.Black, tour);
64          }
65
66          double scoreMin = double.MaxValue;
67          double scoreMax = double.MinValue;
68          for (int i = 0; i < points.Length; i++) {
69            var score = Data.GetScore(i);
70            if (score < scoreMin) scoreMin = score;
71            if (score > scoreMax) scoreMax = score;
72          }
73          double scoreRange = scoreMax - scoreMin;
74          for (int i = 0; i < points.Length; i++) {
75            double score = Data.GetScore(i);
76            int size = scoreRange.IsAlmost(0.0)
77              ? 6
78              : (int)Math.Round(((score - scoreMin) / scoreRange) * 8 + 2);
79            graphics.FillRectangle(Brushes.Red, points[i].X - size / 2, points[i].Y - size / 2, size, size);
80          }
81          int startingPoint = Data.StartingPoint;
82          int terminalPoint = Data.TerminalPoint;
83          Font font = new Font(FontFamily.GenericSansSerif, 10, FontStyle.Regular);
84          var beginSize = graphics.MeasureString("Begin", font);
85          if (startingPoint >= 0 && startingPoint < points.Length)
86            graphics.DrawString("Begin", font, Brushes.Black, points[startingPoint].X - beginSize.Width, points[startingPoint].Y - beginSize.Height);
87          if (terminalPoint >= 0 && terminalPoint < points.Length)
88            graphics.DrawString("End", font, Brushes.Black, points[terminalPoint].X, points[terminalPoint].Y);
89        }
90      } else {
91        using (Graphics graphics = Graphics.FromImage(bitmap)) {
92          graphics.Clear(Color.White);
93          Font font = new Font(FontFamily.GenericSansSerif, 12, FontStyle.Regular);
94          string text = "No coordinates defined or in wrong format.";
95          SizeF strSize = graphics.MeasureString(text, font);
96          graphics.DrawString(text, font, Brushes.Black, (float)(width - strSize.Width) / 2.0f, (float)(height - strSize.Height) / 2.0f);
97        }
98      }
99      return bitmap;
100    }
101  }
102}
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