X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fspaceable-grob.cc;h=2088284412eca98598941367477a85e3145fb8e2;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=99b87cd24264bd526b7ed3548ffbbe13690ab0cc;hpb=b782f68f927fa02b3ea895dd1bd801082e5bda6e;p=lilypond.git

diff --git a/lily/spaceable-grob.cc b/lily/spaceable-grob.cc
index 99b87cd242..2088284412 100644
--- a/lily/spaceable-grob.cc
+++ b/lily/spaceable-grob.cc
@@ -1,109 +1,104 @@
-/*   
-  spaceable-grob.cc --  implement Spaceable_grob
-  
+/*
+  spaceable-grob.cc -- implement Spaceable_grob
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
+
+  (c) 2000--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
 
 #include "spaceable-grob.hh"
 
-#include <cstdio> 
-#include <math.h>
+#include <cstdio>
 
 #include "warn.hh"
 #include "spring.hh"
-#include "group-interface.hh"
+#include "pointer-group-interface.hh"
+#include "grob.hh"
+#include "paper-column.hh"
+#include "international.hh"
 
 SCM
-Spaceable_grob::get_minimum_distances (Grob*me)
+Spaceable_grob::get_minimum_distances (Grob *me)
 {
-  return me->get_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 = scm_make_real (d);
+  SCM newdist = scm_from_double (d);
   for (SCM s = mins; scm_is_pair (s); s = scm_cdr (s))
     {
       SCM dist = scm_car (s);
       if (scm_car (dist) == p->self_scm ())
 	{
 	  scm_set_cdr_x (dist, scm_max (scm_cdr (dist),
-				       newdist));
-	  return ;
+					newdist));
+	  return;
 	}
     }
 
+  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_property ("minimum-distances", mins);
+  me->set_object ("minimum-distances", mins);
 }
 
 void
-Spaceable_grob::add_spring (Grob*me, Grob * p, Real d, Real strength)
+Spaceable_grob::add_spring (Grob *me, Grob *other, Spring sp)
 {
-  //  printf ("dist %lf, str %lf\n", d, strength); 
-  if (d <= 0.0 || strength <= 0.0)
-    {
-      programming_error ("Adding reverse spring! Setting to unit spring");
-      d = 1.0;
-      strength = 1.0;
-    }
-  
-  if (isinf (d) || isnan(d)
-      || isnan (strength))
-    {
-      /*
-	strength == INF is possible. It means fixed distance.
-       */
-      programming_error ("Insane distance found.");
-      d = 1.0;
-      strength = 1.0;
-    }
-    
-#ifndef NDEBUG
-  SCM mins = me->get_property ("ideal-distances");
-  for (SCM s = mins; scm_is_pair (s); s = scm_cdr (s))
+  SCM ideal = me->get_object ("ideal-distances");
+
+  ideal = scm_cons (scm_cons (sp.smobbed_copy (), other->self_scm ()), ideal);
+  me->set_object ("ideal-distances", ideal);
+}
+
+Spring
+Spaceable_grob::get_spring (Grob *this_col, Grob *next_col)
+{
+  Spring *spring = 0;
+
+  for (SCM s = this_col->get_object ("ideal-distances");
+       !spring && scm_is_pair (s);
+       s = scm_cdr (s))
     {
-      Spring_smob * sp = unsmob_spring(scm_car (s));
-      if (sp->other_ == p)
-	{
-	  programming_error ("already have that spring");
-	  return ;
-	}
+      if (scm_is_pair (scm_car (s))
+	  && unsmob_grob (scm_cdar (s)) == next_col
+	  && unsmob_spring (scm_caar (s)))
+	spring = unsmob_spring (scm_caar (s));
     }
-#endif
-  
-  Spring_smob spring;
-  spring.strength_ = strength;
-  spring.distance_ = d;
-  spring.other_ = p;
-  
-  Group_interface::add_thing (me, ly_symbol2scm ("ideal-distances"), spring.smobbed_copy ());
-}
 
+  if (!spring)
+    programming_error (_f ("No spring between column %d and next one",
+			   Paper_column::get_rank (this_col)));
 
-void
-Spaceable_grob::remove_interface (Grob*me)
-{
-  me->set_property ("minimum-distances" , SCM_EOL);
-  me->set_property ("spacing-wishes", SCM_EOL);
-  me->set_property ("ideal-distances", SCM_EOL);
+  return spring ? *spring : Spring ();
 }
 
 
 
-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 "
-	       "allow-outside-line left-neighbors right-neighbors");
+ADD_INTERFACE (Spaceable_grob,
+	       "A layout object that takes part in the spacing problem.",
+
+	       /* properties */
+	       "allow-loose-spacing "
+	       "ideal-distances "
+	       "keep-inside-line "
+	       "left-neighbors "
+	       "measure-length "
+	       "minimum-distances "
+	       "right-neighbors "
+	       "spacing-wishes "
+	       );