1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2013 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.Diagnostics;
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25 | using System.Linq;
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26 | using HeuristicLab.Analysis.AlgorithmBehavior.Analyzers;
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27 |
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28 | namespace PerformanceTests {
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29 | class Program {
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30 | static void Main(string[] args) {
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31 | // TestSimpleVolumeCalculation();
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32 | // TestVolCalc();
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33 | //TestQHullVolumeCalculation();
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34 | TestQhull();
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35 | }
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36 |
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37 | public static void TestQhull() {
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38 | var points = new List<double[]>();
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39 | points.Add(new double[] { -0.72045174, 1.44667601, -1.75159125 });
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40 | points.Add(new double[] { -0.67521503, 0.61127293, -0.33962646 });
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41 | points.Add(new double[] { 2.02392510, -0.41962562, -1.12211942 });
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42 | points.Add(new double[] { 0.02647963, -0.24983950, -0.47038916 });
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43 | points.Add(new double[] { 0.61548803, -0.25039511, 0.97745744 });
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44 | points.Add(new double[] { -1.65142294, -0.09537136, 1.93154268 });
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45 | points.Add(new double[] { 1.12618422, 0.49384888, 0.05286691 });
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46 | points.Add(new double[] { -0.12506782, -2.29161965, -0.09710301 });
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47 |
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48 | double volume = QhullWrapper.CalculateVolume(points);
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49 | volume = Math.Round(volume, 6);
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50 | Console.WriteLine("Volume is: " + volume);
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51 | }
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52 |
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53 |
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54 | public static void TestVolCalc() {
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55 | int dim = 3;
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56 | int size = 8;
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57 | var data = CreateRandomData(size, dim);
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58 | var dataList = data.ToList();
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59 | Stopwatch watch = new Stopwatch();
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60 |
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61 |
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62 | //calculate convex hull
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63 | watch.Start();
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64 | var convexHull = LPHull.Calculate(data);
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65 | watch.Stop();
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66 | Console.WriteLine("Convex hull calculation took : " + watch.Elapsed.TotalSeconds + " seconds.");
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67 |
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68 |
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69 | //calculate volume of convex hull
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70 | watch.Start();
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71 | double volume = ConvexHullMeasures.CalculateVolume(convexHull);
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72 | watch.Stop();
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73 | Console.WriteLine("Volume calculation of convex hull took : " + watch.Elapsed.TotalSeconds + " seconds.");
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74 | Console.WriteLine("Volume of convex hull is: " + volume);
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75 |
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76 |
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77 | //do volume calculation from the whole data set
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78 | watch.Start();
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79 | volume = ConvexHullMeasures.CalculateVolume(dataList);
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80 | watch.Stop();
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81 | Console.WriteLine("Volume calculation of whole data set took : " + watch.Elapsed.TotalSeconds + " seconds.");
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82 | Console.WriteLine("Volume of whole data is: " + volume);
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83 |
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84 |
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85 | //do volume calculation with lrs
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86 | watch.Start();
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87 | volume = LiblrsWrapper.CalculateVolume(dataList);
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88 | watch.Stop();
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89 | Console.WriteLine("Volume calculation of whole data set with lrs took : " + watch.Elapsed.TotalSeconds + " seconds.");
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90 | Console.WriteLine("Volume of whole data with lrs is: " + volume);
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91 | }
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92 |
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93 | private static void TestQHullVolumeCalculation() {
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94 | const int numPoints = 8;
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95 | const int dimension = 3;
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96 |
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97 | var points = new List<double[]>();
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98 |
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99 | points.Add(new double[] { -0.72045174, 1.44667601, -1.75159125 });
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100 | points.Add(new double[] { -0.67521503, 0.61127293, -0.33962646 });
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101 | points.Add(new double[] { 2.02392510, -0.41962562, -1.12211942 });
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102 | points.Add(new double[] { 0.02647963, -0.24983950, -0.47038916 });
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103 | points.Add(new double[] { 0.61548803, -0.25039511, 0.97745744 });
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104 | points.Add(new double[] { -1.65142294, -0.09537136, 1.93154268 });
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105 | points.Add(new double[] { 1.12618422, 0.49384888, 0.05286691 });
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106 | points.Add(new double[] { -0.12506782, -2.29161965, -0.09710301 });
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107 |
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108 | Stopwatch watch = new Stopwatch();
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109 | //calculate convex hull
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110 | watch.Start();
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111 | var convexHull = LPHull.Calculate(points.ToArray());
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112 | watch.Stop();
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113 | Console.WriteLine("Convex hull calculation took : " + watch.Elapsed.TotalSeconds + " seconds.");
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114 |
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115 |
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116 | //calculate volume of convex hull
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117 | watch.Start();
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118 | double volume = ConvexHullMeasures.CalculateVolume(convexHull);
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119 | watch.Stop();
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120 | Console.WriteLine("Volume calculation of convex hull took : " + watch.Elapsed.TotalSeconds + " seconds.");
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121 | Console.WriteLine("Volume of convex hull is: " + volume); //7.960698
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122 |
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123 |
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124 | //do volume calculation from the whole data set
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125 | watch.Start();
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126 | volume = ConvexHullMeasures.CalculateVolume(points);
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127 | watch.Stop();
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128 | Console.WriteLine("Volume calculation of whole data set took : " + watch.Elapsed.TotalSeconds + " seconds.");
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129 | Console.WriteLine("Volume of whole data is: " + volume);
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130 |
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131 |
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132 | //do volume calculation with lrs
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133 | watch = new Stopwatch();
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134 | watch.Start();
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135 | volume = LiblrsWrapper.CalculateVolume(points);
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136 | watch.Stop();
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137 | Console.WriteLine("Volume calculation of whole data set with lrs took : " + watch.Elapsed.TotalSeconds + " seconds.");
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138 | Console.WriteLine("Volume of whole data with lrs is: " + volume);
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139 | }
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140 |
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141 | private static void TestSimpleVolumeCalculation() {
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142 | const int numPoints = 4;
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143 | const int dimension = 3;
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144 |
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145 | double[] num1 = new double[dimension];
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146 | double[] num2 = new double[dimension];
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147 | double[] num3 = new double[dimension];
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148 | double[] num4 = new double[dimension];
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149 |
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150 | num1[0] = 1;
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151 | num1[1] = 2;
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152 | num1[2] = 2;
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153 |
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154 | num2[0] = 3;
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155 | num2[1] = 4;
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156 | num2[2] = 3;
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157 |
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158 | num3[0] = 3;
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159 | num3[1] = 6;
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160 | num3[2] = 3;
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161 |
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162 | num4[0] = 7;
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163 | num4[1] = 8;
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164 | num4[2] = 3;
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165 |
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166 | var points = new List<double[]>();
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167 | points.Add(num1);
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168 | points.Add(num2);
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169 | points.Add(num3);
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170 | points.Add(num4);
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171 |
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172 |
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173 | double volume = ConvexHullMeasures.CalculateSimplexVolume(points);
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174 |
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175 | }
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176 |
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177 | private static double[][] CreateRandomData(int n, int m) {
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178 | double[][] result = new double[n][];
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179 | Random rand = new Random();
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180 |
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181 | for (int i = 0; i < n; i++) {
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182 | result[i] = new double[m];
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183 | for (int j = 0; j < m; j++) {
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184 | result[i][j] = (double)rand.Next(1, 60);
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185 | }
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186 | }
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187 | return result;
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188 | }
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189 | }
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190 | }
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