remove TEXMF from variables.

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

diff --git a/lily/spaceable-grob.cc b/lily/spaceable-grob.cc
index ec1e0430c008b26310594bacde440277dc59463d..13760ce36aa0abefee9ca35f5c2505b0fc72af64 100644 (file)
--- a/lily/spaceable-grob.cc
+++ b/lily/spaceable-grob.cc
@@ -1,78 +1,107 @@
-/*   
-  spaceable-grob.cc --  implement Spaceable_grob
-  
+/*
+  spaceable-grob.cc -- implement Spaceable_grob
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 2000--2001 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"
 
 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_property ("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 (isinf (d) || d < 0)
+    {
+      programming_error ("Weird 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_make_real (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);
+  mins = scm_cons (scm_cons (p->self_scm (), newdist), mins);
+  me->set_property ("minimum-distances", mins);
 }
 
 void
-Spaceable_grob::add_spring (Grob*me, Grob * p, Real d, Real strength)
+Spaceable_grob::add_spring (Grob *me, Grob *p, Real d, Real strength)
 {
-  SCM mins = me->get_grob_property ("ideal-distances");
-  
-  
-  SCM newdist= gh_double2scm (d);
-  for (SCM s = mins; gh_pair_p (s); s = ly_cdr (s))
+  //  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))
     {
-      SCM dist = ly_car (s);
-      if (ly_car (dist) == p->self_scm ())
+      /*
+       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))
+    {
+      Spring_smob *sp = unsmob_spring (scm_car (s));
+      if (sp->other_ == p)
        {
          programming_error ("already have that spring");
-         return ;
+         return;
        }
     }
-  SCM newstrength= gh_double2scm (strength);  
-  
-  mins = gh_cons (gh_cons (p->self_scm (), gh_cons (newdist, newstrength)), mins);
-  me->set_grob_property ("ideal-distances", mins);
-}
+#endif
 
+  Spring_smob spring;
+  spring.strength_ = strength;
+  spring.distance_ = d;
+  spring.other_ = p;
 
-void
-Spaceable_grob::remove_interface (Grob*me)
-{
-  me->remove_grob_property ("minimum-distances");
-  me->remove_grob_property ("ideal-distances");
-  me->remove_grob_property ("dir-list");
+  Group_interface::add_thing (me, ly_symbol2scm ("ideal-distances"), spring.smobbed_copy ());
 }
 
-
 void
-Spaceable_grob::set_interface (Grob*me)
+Spaceable_grob::remove_interface (Grob *me)
 {
-  me->set_interface (ly_symbol2scm ("spaceable-grob-interface"));
+  me->set_property ("minimum-distances", SCM_EOL);
+  me->set_property ("spacing-wishes", SCM_EOL);
+  me->set_property ("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 "
+              "allow-outside-line left-neighbors right-neighbors");
+