1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2010 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.Windows.Forms;
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25 | using HeuristicLab.Core.Views;
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26 | using HeuristicLab.Data;
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27 | using HeuristicLab.MainForm;
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28 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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29 | using System.Collections.Generic;
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30 |
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31 | namespace HeuristicLab.Problems.ArtificialAnt.Views {
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32 | [View("AntTrail View")]
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33 | [Content(typeof(AntTrail), true)]
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34 | public sealed partial class AntTrailView : ItemView {
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35 | public new AntTrail Content {
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36 | get { return (AntTrail)base.Content; }
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37 | set { base.Content = value; }
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38 | }
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39 |
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40 | public AntTrailView() {
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41 | InitializeComponent();
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42 | }
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43 |
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44 | public AntTrailView(AntTrail content)
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45 | : this() {
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46 | Content = content;
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47 | }
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48 |
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49 | protected override void DeregisterContentEvents() {
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50 | Content.SymbolicExpressionTreeChanged -= new EventHandler(Content_SymbolicExpressionTreeChanged);
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51 | base.DeregisterContentEvents();
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52 | }
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53 | protected override void RegisterContentEvents() {
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54 | base.RegisterContentEvents();
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55 | Content.SymbolicExpressionTreeChanged += new EventHandler(Content_SymbolicExpressionTreeChanged);
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56 | }
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57 |
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58 | protected override void OnContentChanged() {
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59 | base.OnContentChanged();
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60 | if (Content == null) {
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61 | pictureBox.Image = null;
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62 | pictureBox.Enabled = false;
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63 | } else {
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64 | pictureBox.Enabled = true;
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65 | GenerateImage();
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66 | }
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67 | }
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68 |
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69 | private void GenerateImage() {
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70 | playButton.Enabled = this.Enabled;
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71 | animationTimer.Stop();
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72 | if ((pictureBox.Width > 0) && (pictureBox.Height > 0)) {
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73 | if (Content == null) {
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74 | pictureBox.Image = null;
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75 | playButton.Enabled = false;
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76 | } else {
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77 | var nodeStack = new Stack<SymbolicExpressionTreeNode>();
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78 | int rows = Content.World.Rows;
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79 | int columns = Content.World.Columns;
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80 | SymbolicExpressionTree expression = Content.SymbolicExpressionTree;
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81 |
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82 | DrawWorld();
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83 | using (Graphics graphics = Graphics.FromImage(pictureBox.Image)) {
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84 | float cellHeight = pictureBox.Height / (float)rows;
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85 | float cellWidth = pictureBox.Width / (float)columns;
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86 |
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87 | AntInterpreter interpreter = new AntInterpreter();
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88 | interpreter.MaxTimeSteps = Content.MaxTimeSteps.Value;
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89 | interpreter.Expression = Content.SymbolicExpressionTree;
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90 | interpreter.World = Content.World;
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91 | int currentAntLocationColumn;
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92 | int currentAntLocationRow;
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93 | // draw initial ant
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94 | interpreter.AntLocation(out currentAntLocationRow, out currentAntLocationColumn);
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95 | DrawAnt(graphics, currentAntLocationRow, currentAntLocationColumn, interpreter.AntDirection, cellWidth, cellHeight);
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96 | // interpret ant code and draw trail
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97 | while (interpreter.ElapsedTime < interpreter.MaxTimeSteps) {
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98 | interpreter.Step();
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99 | interpreter.AntLocation(out currentAntLocationRow, out currentAntLocationColumn);
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100 | DrawAnt(graphics, currentAntLocationRow, currentAntLocationColumn, interpreter.AntDirection, cellWidth, cellHeight);
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101 | }
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102 | }
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103 | pictureBox.Refresh();
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104 | }
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105 | }
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106 | }
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107 |
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108 | private void DrawWorld() {
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109 | int rows = Content.World.Rows;
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110 | int columns = Content.World.Columns;
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111 | Bitmap bitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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112 | using (Graphics graphics = Graphics.FromImage(bitmap)) {
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113 | float cellHeight = pictureBox.Height / (float)rows;
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114 | float cellWidth = pictureBox.Width / (float)columns;
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115 | // draw world
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116 | for (int i = 0; i < rows; i++) {
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117 | graphics.DrawLine(Pens.Black, 0, i * cellHeight, pictureBox.Width, i * cellHeight);
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118 | }
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119 | for (int j = 0; j < columns; j++) {
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120 | graphics.DrawLine(Pens.Black, j * cellWidth, 0, j * cellWidth, pictureBox.Height);
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121 | }
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122 | for (int i = 0; i < rows; i++) {
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123 | for (int j = 0; j < columns; j++) {
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124 | if (Content.World[i, j])
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125 | graphics.FillEllipse(Brushes.LightBlue, j * cellWidth, i * cellHeight, cellWidth, cellHeight);
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126 | }
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127 | }
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128 | pictureBox.Image = bitmap;
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129 | }
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130 | }
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131 |
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132 | private void DrawAnt(Graphics g, int row, int column, int direction, float cellWidth, float cellHeight) {
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133 | //g.FillRectangle(Brushes.White, column * cellWidth, row * cellHeight,
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134 | // cellWidth, cellHeight);
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135 | // draw ant body
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136 | g.FillRectangle(Brushes.Brown,
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137 | column * cellWidth + cellWidth * 0.25f, row * cellHeight + cellHeight * 0.25f,
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138 | cellWidth * 0.5f, cellHeight * 0.5f);
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139 | // show ant direction
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140 | float centerX = column * cellWidth + cellWidth * 0.5f;
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141 | float centerY = row * cellHeight + cellHeight * 0.5f;
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142 | float directionX = centerX;
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143 | float directionY = centerY;
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144 | switch (direction) {
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145 | case 0: { // EAST
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146 | directionX = centerX + cellWidth * 0.5f;
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147 | break;
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148 | }
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149 | case 1: { // SOUTH
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150 | directionY = directionY + cellHeight * 0.5f;
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151 | break;
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152 | }
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153 | case 2: { // WEST
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154 | directionX = centerX - cellWidth * 0.5f;
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155 | break;
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156 | }
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157 | case 3: { // NORTH
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158 | directionY = directionY - cellHeight * 0.5f;
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159 | break;
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160 | }
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161 | default: throw new InvalidOperationException();
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162 | }
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163 | g.DrawLine(Pens.Brown, centerX, centerY, directionX, directionY);
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164 | }
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165 |
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166 | void Content_SymbolicExpressionTreeChanged(object sender, EventArgs e) {
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167 | if (InvokeRequired)
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168 | Invoke(new EventHandler(Content_SymbolicExpressionTreeChanged), sender, e);
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169 | else
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170 | GenerateImage();
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171 | }
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172 |
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173 | private void pictureBox_SizeChanged(object sender, EventArgs e) {
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174 | GenerateImage();
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175 | }
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176 |
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177 | #region animation
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178 | private AntInterpreter animationInterpreter;
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179 | private void playButton_Click(object sender, EventArgs e) {
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180 | playButton.Enabled = false;
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181 | int rows = Content.World.Rows;
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182 | int columns = Content.World.Columns;
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183 | SymbolicExpressionTree expression = Content.SymbolicExpressionTree;
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184 | var nodeStack = new Stack<SymbolicExpressionTreeNode>();
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185 |
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186 | animationInterpreter = new AntInterpreter();
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187 | animationInterpreter.MaxTimeSteps = Content.MaxTimeSteps.Value;
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188 | animationInterpreter.Expression = Content.SymbolicExpressionTree;
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189 | animationInterpreter.World = Content.World;
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190 |
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191 | DrawWorld();
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192 | using (Graphics graphics = Graphics.FromImage(pictureBox.Image)) {
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193 | float cellHeight = pictureBox.Height / (float)Content.World.Rows;
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194 | float cellWidth = pictureBox.Width / (float)Content.World.Columns;
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195 | // draw initial ant
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196 | int currentAntLocationColumn;
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197 | int currentAntLocationRow;
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198 | animationInterpreter.AntLocation(out currentAntLocationRow, out currentAntLocationColumn);
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199 | DrawAnt(graphics, currentAntLocationRow, currentAntLocationColumn, animationInterpreter.AntDirection, cellWidth, cellHeight);
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200 | pictureBox.Refresh();
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201 | }
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202 |
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203 | animationTimer.Start();
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204 | }
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205 |
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206 | private void animationTimer_Tick(object sender, EventArgs e) {
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207 | using (Graphics graphics = Graphics.FromImage(pictureBox.Image)) {
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208 | float cellHeight = pictureBox.Height / (float)Content.World.Rows;
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209 | float cellWidth = pictureBox.Width / (float)Content.World.Columns;
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210 | int currentAntLocationColumn;
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211 | int currentAntLocationRow;
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212 | // interpret ant code and draw trail
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213 | animationInterpreter.Step();
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214 | animationInterpreter.AntLocation(out currentAntLocationRow, out currentAntLocationColumn);
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215 | DrawAnt(graphics, currentAntLocationRow, currentAntLocationColumn, animationInterpreter.AntDirection, cellWidth, cellHeight);
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216 | pictureBox.Refresh();
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217 | if (animationInterpreter.ElapsedTime < animationInterpreter.MaxTimeSteps) {
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218 | animationTimer.Start();
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219 | } else {
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220 | animationTimer.Stop();
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221 | playButton.Enabled = this.Enabled;
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222 | }
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223 | }
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224 | }
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225 | #endregion
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226 |
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227 | private void AntTrailView_EnabledChanged(object sender, EventArgs e) {
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228 | if (this.Enabled) playButton.Enabled = true;
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229 | else playButton.Enabled = false;
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230 | }
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231 | }
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232 | }
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