source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
*/
void
-Stem_tremolo::set_interface (Score_element *me)
+Stem_tremolo::set_interface (Grob *me)
{
-me->set_elt_property ("stem", SCM_EOL);
+ me->set_interface (ly_symbol2scm ("stem-tremolo"));
}
+bool
+Stem_tremolo::has_interface (Grob *me)
+{
+ return me->has_interface (ly_symbol2scm ("stem-tremolo"));
+}
-Interval
-Stem_tremolo::dim_callback (Score_element * se, Axis )
+MAKE_SCHEME_CALLBACK (Stem_tremolo,dim_callback,2);
+
+/*
+ todo: init with cons.
+ */
+SCM
+Stem_tremolo::dim_callback (SCM e, SCM)
{
+ Grob * se = unsmob_grob (e);
+
Real space = Staff_symbol_referencer::staff_space (se);
- return Interval (-space, space);
+ return ly_interval2scm (Interval (-space, space));
}
+/*
+ ugh ? --from Slur
+ */
+MAKE_SCHEME_CALLBACK (Stem_tremolo, height, 2);
+SCM
+Stem_tremolo::height (SCM smob, SCM ax)
+{
+ Axis a = (Axis)gh_scm2int (ax);
+ Grob * me = unsmob_grob (smob);
+ assert (a == Y_AXIS);
+ SCM mol = me->get_uncached_molecule ();
+ return ly_interval2scm (unsmob_molecule (mol)->extent (a));
+}
-MAKE_SCHEME_CALLBACK(Stem_tremolo,brew_molecule);
+
+MAKE_SCHEME_CALLBACK (Stem_tremolo,brew_molecule,1);
SCM
Stem_tremolo::brew_molecule (SCM smob)
{
- Score_element *me= unsmob_element (smob);
- Score_element * stem = unsmob_element (me->get_elt_property ("stem"));
- Score_element * beam = Stem::beam_l (stem);
+ Grob *me= unsmob_grob (smob);
+ Grob * stem = unsmob_grob (me->get_grob_property ("stem"));
+ Grob * beam = Stem::beam_l (stem);
Real dydx;
if (beam)
{
Real dy = 0;
- SCM s = beam->get_elt_property ("height");
+ SCM s = beam->get_grob_property ("dy");
if (gh_number_p (s))
dy = gh_scm2double (s);
Real dx = Beam::last_visible_stem (beam)->relative_coordinate (0, X_AXIS)
dydx = 0.25;
Real ss = Staff_symbol_referencer::staff_space (stem);
- Real thick = gh_scm2double (me->get_elt_property ("beam-thickness"));
- Real width = gh_scm2double (me->get_elt_property ("beam-width"));
+ Real thick = gh_scm2double (me->get_grob_property ("beam-thickness"));
+ Real width = gh_scm2double (me->get_grob_property ("beam-width"));
width *= ss;
thick *= ss;
- Molecule a (me->lookup_l ()->beam (dydx, width, thick));
+ Molecule a (Lookup::beam (dydx, width, thick));
a.translate (Offset (-width/2, width / 2 * dydx));
int tremolo_flags;
- SCM s = me->get_elt_property ("tremolo-flags");
+ SCM s = me->get_grob_property ("tremolo-flags");
if (gh_number_p (s))
tremolo_flags = gh_scm2int (s);
else
tremolo_flags = 1;
int mult = beam ? Beam::get_multiplicity (beam) : 0;
- Real interbeam_f = me->paper_l ()->interbeam_f (mult);
+ SCM space_proc = me->get_grob_property ("beam-space-function");
+ SCM space = gh_call1 (space_proc, gh_int2scm (mult));
+ Real interbeam_f = gh_scm2double (space) * ss;
+
+
Molecule mol;
for (int i = 0; i < tremolo_flags; i++)
{
if (beam)
{
// ugh, rather calc from Stem_tremolo_req
- int beams_i = Stem::beam_count(stem, RIGHT) >? Stem::beam_count (stem, LEFT);
- mol.translate (Offset(stem->relative_coordinate (0, X_AXIS) - me->relative_coordinate (0, X_AXIS),
- Stem::stem_end_position (stem ) * ss / 2 -
- Directional_element_interface (beam).get () * beams_i * interbeam_f));
+ int beams_i = Stem::beam_count (stem, RIGHT) >? Stem::beam_count (stem, LEFT);
+ mol.translate (Offset (stem->relative_coordinate (0, X_AXIS) - me->relative_coordinate (0, X_AXIS),
+ Stem::stem_end_position (stem) * ss / 2 -
+ Directional_element_interface::get (beam) * beams_i * interbeam_f));
}
else
{
/*
Beams should intersect one beamthickness below stem end
*/
- Real dy = Stem::stem_end_position (stem ) * ss / 2;
- dy -= mol.extent (Y_AXIS).length () / 2 * Stem::get_direction (stem );
+ Real dy = Stem::stem_end_position (stem) * ss / 2;
+ dy -= mol.extent (Y_AXIS).length () / 2 * Stem::get_direction (stem);
/*
uhg. Should use relative coords and placement
*/
Real whole_note_correction;
- if (Stem::invisible_b (stem ))
- whole_note_correction = -Stem::get_direction (stem )
- * Stem::support_head (stem )->extent (X_AXIS).length () / 2;
+ if (Stem::invisible_b (stem))
+ {
+ Grob *hed = Stem::support_head (stem);
+ whole_note_correction = -Stem::get_direction (stem)
+ *hed->extent (hed, X_AXIS).length () / 2;
+ }
else
whole_note_correction = 0;
whole_note_correction, dy));
}
- return mol.create_scheme();
+ return mol.smobbed_copy ();
}
void
-Stem_tremolo::set_stem (Score_element*me,Score_element *s)
+Stem_tremolo::set_stem (Grob*me,Grob *s)
{
- me->set_elt_property ("stem", s->self_scm_);
+ me->set_grob_property ("stem", s->self_scm ());
}