git.gag.com Git - debian/openrocket/blob - core/test/net/sf/openrocket/optimization/TestSearchPattern.java

   1 package net.sf.openrocket.optimization;
   2
   3 import static org.junit.Assert.*;
   4
   5 import java.util.List;
   6
   7 import net.sf.openrocket.optimization.general.Point;
   8 import net.sf.openrocket.optimization.general.multidim.SearchPattern;
   9
  10 import org.junit.Test;
  11
  12 public class TestSearchPattern {
  13
  14         @Test
  15         public void testRegularSimplex() {
  16                 for (int dim = 1; dim < 20; dim++) {
  17                         List<Point> points = SearchPattern.regularSimplex(dim);
  18                         assertEquals(dim, points.size());
  19
  20                         for (int i = 0; i < dim; i++) {
  21                                 // Test dot product
  22                                 for (int j = i + 1; j < dim; j++) {
  23                                         double[] x = points.get(i).asArray();
  24                                         double[] y = points.get(j).asArray();
  25                                         double dot = 0;
  26                                         for (int k = 0; k < dim; k++) {
  27                                                 dot += x[k] * y[k];
  28                                         }
  29                                         assertEquals(0.5, dot, 0.000000001);
  30                                 }
  31
  32                                 // Test positive coordinates
  33                                 for (int j = 0; j < dim; j++) {
  34                                         assertTrue(points.get(i).get(j) >= 0);
  35                                 }
  36
  37                                 // Test length
  38                                 assertEquals(1.0, points.get(i).length(), 0.000000001);
  39                         }
  40                 }
  41         }
  42
  43 }