* lily/main.cc (setup_guile_env): new function. Set GC min_yields

[lilypond.git] / lily / spaceable-grob.cc

diff --git a/lily/spaceable-grob.cc b/lily/spaceable-grob.cc
index 2695186b5d6685278bf72d5119666a74f3dd330f..a36fe3c175adfb905d657a3dc8df984ac5c7341c 100644 (file)
--- a/lily/spaceable-grob.cc
+++ b/lily/spaceable-grob.cc
@@ -1,87 +1,114 @@
-/*   
-  spaceable-grob.cc --  implement Spaceable_grob
-  
+/*
+  spaceable-grob.cc -- implement Spaceable_grob
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 2000--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
+
+  (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
 
 #include "spaceable-grob.hh"
-#include "grob.hh"
+
+#include <cstdio>
+#include <math.h>
+
 #include "warn.hh"
 #include "spring.hh"
-#include "group-interface.hh"
+#include "pointer-group-interface.hh"
+#include "grob.hh"
+#include "paper-column.hh"
 
 SCM
-Spaceable_grob::get_minimum_distances (Grob*me)
+Spaceable_grob::get_minimum_distances (Grob *me)
 {
-  return me->get_grob_property ("minimum-distances");
+  return me->get_object ("minimum-distances");
 }
 
 /*todo: merge code of spring & rod?
  */
 void
-Spaceable_grob::add_rod (Grob *me , Grob * p, Real d)
+Spaceable_grob::add_rod (Grob *me, Grob *p, Real d)
 {
+  //  printf ("rod %lf\n", d);
+  if (d < 0)
+    return;
+  
+  if (isinf (d))
+    programming_error ("infinite rod");
+
   SCM mins = get_minimum_distances (me);
-  SCM newdist = gh_double2scm (d);
-  for (SCM s = mins; gh_pair_p (s); s = ly_cdr (s))
+  SCM newdist = scm_from_double (d);
+  for (SCM s = mins; scm_is_pair (s); s = scm_cdr (s))
     {
-      SCM dist = ly_car (s);
-      if (ly_car (dist) == p->self_scm ())
+      SCM dist = scm_car (s);
+      if (scm_car (dist) == p->self_scm ())
        {
-         gh_set_cdr_x (dist, scm_max (ly_cdr (dist),
-                                      newdist));
-         return ;
+         scm_set_cdr_x (dist, scm_max (scm_cdr (dist),
+                                       newdist));
+         return;
        }
     }
 
-  mins = gh_cons (gh_cons (p->self_scm (), newdist), mins);
-  me->set_grob_property ("minimum-distances", mins);
+  if (Paper_column::get_rank (p) < Paper_column::get_rank (me))
+    {
+      programming_error ("Adding reverse rod");
+    }
+  
+  mins = scm_cons (scm_cons (p->self_scm (), newdist), mins);
+  me->set_object ("minimum-distances", mins);
 }
 
 void
-Spaceable_grob::add_spring (Grob*me, Grob * p, Real d, Real strength, bool expand_only)
+Spaceable_grob::add_spring (Grob *me, Grob *p, Real d, Real inverse_strength)
 {
-  if (d < 0.0 || strength <= 0.0)
+  if (d <= 0.0 || inverse_strength < 0.0)
     {
-      programming_error ("Adding reverse spring!");
+      programming_error ("adding reverse spring, setting to unit");
+      d = 1.0;
+      inverse_strength = 1.0;
     }
-  
+
+  if (isinf (d) || isnan (d)
+      || isnan (inverse_strength))
+    {
+      /* strength == INF is possible. It means fixed distance.  */
+      programming_error ("insane distance found");
+      d = 1.0;
+      inverse_strength = 1.0;
+    }
+
 #ifndef NDEBUG
-  SCM mins = me->get_grob_property ("ideal-distances");
-  for (SCM s = mins; gh_pair_p (s); s = ly_cdr (s))
+  SCM mins = me->get_object ("ideal-distances");
+  for (SCM s = mins; scm_is_pair (s); s = scm_cdr (s))
     {
-      Spring_smob * sp = unsmob_spring(ly_car (s));
+      Spring_smob *sp = unsmob_spring (scm_car (s));
       if (sp->other_ == p)
        {
          programming_error ("already have that spring");
-         return ;
+         return;
        }
     }
 #endif
-  
+
   Spring_smob spring;
-  spring.strength_f_ = strength;
-  spring.distance_f_ = d;
-  spring.expand_only_b_ = expand_only;
+  spring.inverse_strength_ = inverse_strength;
+  spring.distance_ = d;
   spring.other_ = p;
-  
-  Group_interface::add_thing (me, ly_symbol2scm ("ideal-distances"), spring.smobbed_copy ());
-}
 
+  SCM ideal = me->get_object ("ideal-distances");
+  ideal = scm_cons (spring.smobbed_copy (), ideal);
+  me->set_object ("ideal-distances", ideal);
+}
 
 void
-Spaceable_grob::remove_interface (Grob*me)
+Spaceable_grob::remove_interface (Grob *me)
 {
-  me->remove_grob_property ("minimum-distances");
-  me->remove_grob_property ("ideal-distances");
+  me->set_object ("minimum-distances", SCM_EOL);
+  me->set_object ("spacing-wishes", SCM_EOL);
+  me->set_object ("ideal-distances", SCM_EOL);
 }
 
+ADD_INTERFACE (Spaceable_grob, "spaceable-grob-interface",
+              "A layout object that takes part in the spacing problem. ",
+              "measure-length spacing-wishes penalty minimum-distances ideal-distances "
+              "keep-inside-line left-neighbors right-neighbors");
 
-void
-Spaceable_grob::set_interface (Grob*me)
-{
-  me->set_interface (ly_symbol2scm ("spaceable-grob-interface"));
-}