private void SetCenterRandomlyForEmptyCluster(ClusterPrototype cluster)
{
if (cluster.PointCount == 0)
{
cluster.SetCenter(this.random.Next(0, this.size.Width - 1), this.random.Next(0, this.size.Height - 1), this.random.Next((int)this.zRange.Min, (int)this.zRange.Max));
}
}