private void DrawRest(DurationCFugue duration, bool dot, byte partIndex)
{
Image image = new Image();
image.HorizontalAlignment = HorizontalAlignment.Left;
image.Source = LayoutController.GetRest(duration, dot);
image.Height = LayoutController.ElementHeight["R" + duration];
double top = LayoutController.GetRestTopMargin(image.Height, duration, partIndex);
image.Margin = new Thickness(leftMargin, top, 0, 0);
staffGrid.Children.Add(image);
Grid.SetRow(image, partIndex);
}