adding testcase for meanshift clustering - not yet finished

VectoCore/VectoCore/Utils/MeanShiftClustering.cs

@@ -31,9 +31,9 @@ namespace TUGraz.VectoCore.Utils
 				clusters[i] = new Cluster(min + (i + 0.5) * clusterDistance);
 			}
 
-			var iterationCount = 0;
+			IterationCount = 0;
 			var updated = true;
-			while (iterationCount++ < MaxIterations && updated) {
+			while (IterationCount++ < MaxIterations && updated) {
 				for (var clusterIdx = 0; clusterIdx < ClusterCount; clusterIdx++) {
 					var minDist = double.MaxValue;
 					var minIdx = -1;
@@ -58,6 +58,8 @@ namespace TUGraz.VectoCore.Utils
 			return clusters.Select(c => c.Center).Distinct(new ClusterComparer(clusterTolerance)).ToArray();
 		}
 
+		public int IterationCount { get; protected set; }
+
 		public struct Cluster
 		{
 			private int _count;

VectoCore/VectoCoreTest/Algorithms/DelaunayMapTest.cs

@@ -43,6 +43,13 @@ namespace TUGraz.VectoCore.Tests.Algorithms
 	[TestFixture]
 	public class DelaunayMapTest
 	{
+		[OneTimeSetUp]
+		public void RunBeforeAnyTests()
+		{
+			Directory.SetCurrentDirectory(TestContext.CurrentContext.TestDirectory);
+		}
+
+
 		[TestCase]
 		public void Test_Simple_DelaunayMap()
 		{

VectoCore/VectoCoreTest/Algorithms/MeanShiftClusteringTest.cs

@@ -18,18 +18,29 @@ namespace TUGraz.VectoCore.Tests.Algorithms
 			var entries = new List<double>();
 			var rnd = new Random(centers.Length);
 			foreach (var center in centers) {
-				entries.Add(center + rnd.NextDouble() * 80 - 40);
+				var sum = 0.0;
+				for (var i = 0; i < 30; i++) {
+					var val = center + rnd.NextDouble() * 20 - 10;
+					sum += val;
+					entries.Add(val);
+				}
+				Console.WriteLine(sum / 30);
 			}
 
-			var clusterer = new MeanShiftClustering();
-			var clusters = clusterer.FindClusters(entries.ToArray(), 0.1);
+			Console.WriteLine(string.Join(", ", entries));
+
+			var clusterer = new MeanShiftClustering() {
+				ClusterCount = 8
+			};
+			var clusters = clusterer.FindClusters(entries.ToArray(), 10);
 
+			Console.WriteLine(clusterer.IterationCount);
 			Console.WriteLine(string.Join(", ",centers));
 			Console.WriteLine(string.Join(", ", clusters));
 
 			Assert.AreEqual(centers.Length, clusters.Length);
 			foreach (var center in centers) {
-				Assert.IsTrue(clusters.Any(x => Math.Abs(center - x) < 1));
+				Assert.IsTrue(clusters.Any(x => Math.Abs(center - x) < 5));
 			}
 		}