release: 1.5.29

[lilypond.git] / lily / stem-tremolo.cc

diff --git a/lily/stem-tremolo.cc b/lily/stem-tremolo.cc
index 45fe3dba7d5596478f8a1511bfb8aceeae2e414f..a4389db4819b3570c14883d8036482bb37ae1bc1 100644 (file)
--- a/lily/stem-tremolo.cc
+++ b/lily/stem-tremolo.cc
@@ -3,7 +3,7 @@
   
   source file of the GNU LilyPond music typesetter
   
-  (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 
@@ -23,46 +23,60 @@
  */
 
 void
-Stem_tremolo::set_interface (Score_element *me)
+Stem_tremolo::set_interface (Grob *me)
 {
   me->set_interface (ly_symbol2scm ("stem-tremolo"));
 }
 
 bool
-Stem_tremolo::has_interface (Score_element *me)
+Stem_tremolo::has_interface (Grob *me)
 {
   return me->has_interface (ly_symbol2scm ("stem-tremolo"));
 }
 
-MAKE_SCHEME_CALLBACK(Stem_tremolo,dim_callback,2);
+MAKE_SCHEME_CALLBACK (Stem_tremolo,dim_callback,2);
 
 /*
   todo: init with cons. 
  */
 SCM
-Stem_tremolo::dim_callback (SCM e, SCM )
+Stem_tremolo::dim_callback (SCM e, SCM)
 {
-  Score_element * se = unsmob_element (e);
+  Grob * se = unsmob_grob (e);
   
   Real space = Staff_symbol_referencer::staff_space (se);
-  return ly_interval2scm ( 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,1);
+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)
@@ -74,8 +88,8 @@ Stem_tremolo::brew_molecule (SCM smob)
     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;
   
@@ -83,7 +97,7 @@ Stem_tremolo::brew_molecule (SCM smob)
   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
@@ -91,7 +105,7 @@ Stem_tremolo::brew_molecule (SCM smob)
     tremolo_flags = 1;
 
   int mult = beam ? Beam::get_multiplicity (beam) : 0;
-  SCM space_proc = me->get_elt_property ("beam-space-function");
+  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;
 
@@ -108,9 +122,9 @@ Stem_tremolo::brew_molecule (SCM smob)
   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 - 
+      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
@@ -118,17 +132,17 @@ Stem_tremolo::brew_molecule (SCM smob)
       /*
        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 ))
+      if (Stem::invisible_b (stem))
        {
-         Score_element *hed = Stem::support_head (stem );
-         whole_note_correction = -Stem::get_direction (stem )
+         Grob *hed = Stem::support_head (stem);
+         whole_note_correction = -Stem::get_direction (stem)
            *hed->extent (hed, X_AXIS).length () / 2;
        }
       else
@@ -143,8 +157,8 @@ Stem_tremolo::brew_molecule (SCM smob)
 
 
 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 ());
 }