+ /*
+ we use thickness because the stem end of the glyph
+ "noteheads.sM2ligmensural" is round.
+ */
+ Real blotdiameter = thickness;
+ /*
+ instead of 2.5 the length of a longa stem should be used
+ Font_interface::get_default_font (???)->find_by_name
+ ("noteheads.sM2ligmensural").extent (Y_AXIS).length () * 0.5
+ */
+ Real stem_length = 2.5 * staff_space;