private void LUTHost_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
dragStart = null;
PointReleasedEvent?.Invoke();
this.ReleaseMouseCapture();
}
private void LUTHost_MouseLeave(object sender, MouseEventArgs e)
{
PointReleasedEvent?.Invoke();
dragStart = null;
this.ReleaseMouseCapture();
}