-//------ for whole note chord tremolos
-
-bool
-Beam::whole_note_close_chord_tremolo (Grob *me)
-{
- if (!scm_is_integer (me->get_property ("gap-count")))
- return false;
-
- extract_grob_set (me, "stems", stems);
- for (vsize i = 0; i < stems.size (); i++)
- if (Stem::duration_log (stems[i]))
- return false;
-
- Grob *staff = Staff_symbol_referencer::get_staff_symbol (me);
- if (staff)
- {
- Grob *outside_stems[2] = {Stem::extremal_heads (stems[0])[DOWN],
- Stem::extremal_heads (stems.back ())[DOWN]};
-
- Interval lines = Staff_symbol::line_span (staff);
- for (int i = 0; i < 2; i++)
- {
- Real my_pos = Staff_symbol_referencer::get_position (outside_stems[i]);
- if (my_pos > lines[UP] + 1)
- return false;
- else if (my_pos < lines[DOWN] - 1)
- return false;
- }
- }
-
- return (Staff_symbol_referencer::get_position (Stem::extremal_heads (stems.back ())[DOWN])
- - Staff_symbol_referencer::get_position (Stem::extremal_heads (stems[0])[DOWN]))
- < 2;
-}
-
-MAKE_SCHEME_CALLBACK (Beam, calc_beam_gap, 1);
-SCM
-Beam::calc_beam_gap (SCM smob)
-{
- Spanner *me = unsmob_spanner (smob);
- SCM default_value = scm_cons (scm_from_double (0.8), scm_from_double (0.8));
- if (!whole_note_close_chord_tremolo (me))
- return default_value;
-
- Interval left = Note_column::accidental_width
- (me->get_bound (RIGHT)->get_parent (X_AXIS));
-
- if (left.length () > 0.4)
- return scm_cons (scm_from_double (0.8), scm_from_double (1.3 + left.length ()));
- else
- return default_value;
-}
-
-MAKE_SCHEME_CALLBACK (Beam, calc_springs_and_rods, 1);
-SCM
-Beam::calc_springs_and_rods (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
-
- if (!whole_note_close_chord_tremolo (me))
- return SCM_BOOL_F;
-
- return scm_call_1 (Spanner::set_spacing_rods_proc, smob);
-}
-
-MAKE_SCHEME_CALLBACK (Beam, calc_minimum_length, 1);
-SCM
-Beam::calc_minimum_length (SCM smob)
-{
- Spanner *me = unsmob_spanner (smob);
- SCM default_value = scm_from_double (0.0);
-
- if (!whole_note_close_chord_tremolo (me))
- return SCM_BOOL_F;
-
- Interval left = Note_column::accidental_width
- (me->get_bound (RIGHT)->get_parent (X_AXIS));
-
- if (left.length () > 0.4)
- return scm_from_double (left.length () + 4.0);
- else
- return default_value;
-}
-
-//------ and everything else
-