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>
*/
#include "paper-def.hh"
#include "lookup.hh"
#include "stem.hh"
-#include "offset.hh"
-#include "dimension-cache.hh"
+#include "item.hh"
#include "staff-symbol-referencer.hh"
#include "directional-element-interface.hh"
lengthen stem if necessary
*/
-Stem_tremolo::Stem_tremolo ()
+void
+Stem_tremolo::set_interface (Grob *me)
{
- set_elt_property ("stem", SCM_EOL);
+ me->set_interface (ly_symbol2scm ("stem-tremolo"));
}
-
-Stem *
-Stem_tremolo::stem_l ()const
+bool
+Stem_tremolo::has_interface (Grob *me)
{
- SCM s = get_elt_property ("stem");
+ return me->has_interface (ly_symbol2scm ("stem-tremolo"));
+}
+
+MAKE_SCHEME_CALLBACK (Stem_tremolo,dim_callback,2);
- return dynamic_cast<Stem*> ( unsmob_element (s));
+/*
+ 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 ly_interval2scm (Interval (-space, space));
}
-Interval
-Stem_tremolo::dim_callback (Score_element * se, Axis a)
+/*
+ ugh ? --from Slur
+ */
+MAKE_SCHEME_CALLBACK (Stem_tremolo, height, 2);
+SCM
+Stem_tremolo::height (SCM smob, SCM ax)
{
- Stem_tremolo * s = dynamic_cast<Stem_tremolo*> (se);
- Real space = Staff_symbol_referencer_interface (s->stem_l ())
- .staff_space ();
- return Interval (-space, space);
+ 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));
}
-Molecule
-Stem_tremolo::do_brew_molecule () const
+MAKE_SCHEME_CALLBACK (Stem_tremolo,brew_molecule,1);
+SCM
+Stem_tremolo::brew_molecule (SCM smob)
{
- Stem * stem = stem_l ();
- Beam * beam = stem->beam_l ();
+ 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 ()->relative_coordinate (0, X_AXIS)
- - beam->first_visible_stem ()->relative_coordinate (0, X_AXIS);
+ Real dx = Beam::last_visible_stem (beam)->relative_coordinate (0, X_AXIS)
+ - Beam::first_visible_stem (beam)->relative_coordinate (0, X_AXIS);
dydx = dx ? dy/dx : 0;
}
else
// urg
dydx = 0.25;
- Real thick = gh_scm2double (get_elt_property ("beam-thickness"));
- Real width = gh_scm2double (get_elt_property ("beam-width"));
- Molecule a (lookup_l ()->beam (dydx, width, thick));
+ Real ss = Staff_symbol_referencer::staff_space (stem);
+ 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 (Lookup::beam (dydx, width, thick));
a.translate (Offset (-width/2, width / 2 * dydx));
int tremolo_flags;
- SCM s = get_elt_property ("tremolo-flags");
+ SCM s = me->get_grob_property ("tremolo-flags");
if (gh_number_p (s))
tremolo_flags = gh_scm2int (s);
else
// huh?
tremolo_flags = 1;
- int mult = beam ? beam->get_multiplicity () : 0;
- Real interbeam_f = paper_l ()->interbeam_f (mult);
+ int mult = beam ? Beam::get_multiplicity (beam) : 0;
+ 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 (tremolo_flags)
mol.translate_axis (-mol.extent (Y_AXIS).center (), Y_AXIS);
-
- Real half_space = Staff_symbol_referencer_interface (stem).staff_space ()
- / 2;
if (beam)
{
// ugh, rather calc from Stem_tremolo_req
- int beams_i = stem->beam_count(RIGHT) >? stem->beam_count (LEFT);
- mol.translate (Offset(stem->relative_coordinate (0, X_AXIS) - relative_coordinate (0, X_AXIS),
- stem->stem_end_position () * half_space -
- directional_element (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 () * half_space;
- dy -= mol.extent (Y_AXIS).length () / 2 * stem->get_direction ();
+ 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 ())
- whole_note_correction = -stem->get_direction ()
- * stem->support_head ()->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;
- mol.translate (Offset (stem->relative_coordinate (0, X_AXIS) - relative_coordinate (0, X_AXIS) +
+ mol.translate (Offset (stem->relative_coordinate (0, X_AXIS) - me->relative_coordinate (0, X_AXIS) +
whole_note_correction, dy));
}
- return mol;
+ return mol.smobbed_copy ();
}
void
-Stem_tremolo::set_stem (Stem *s)
+Stem_tremolo::set_stem (Grob*me,Grob *s)
{
- set_elt_property ("stem", s->self_scm_);
- add_dependency (s);
+ me->set_grob_property ("stem", s->self_scm ());
}
projects / lilypond.git / blobdiff