protected override void OnRender(DrawingContext drawingContext)
{
base.OnRender(drawingContext);
var brushSwitcher = new WpfBrushSwitcher();
foreach (var cluster in this.dataSource.CurrentValue.Clusters)
{
this.DrawClusterPoints(cluster, brushSwitcher.GetNext(), drawingContext);
this.DrawCenter(cluster, drawingContext);
}
}