source file of the GNU LilyPond music typesetter
- (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1999--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
TODO:
- add support for different stretch/shrink constants?
#include "rod.hh"
#include "warn.hh"
#include "column-x-positions.hh"
+#include "spaceable-element.hh"
#include "dimensions.hh"
Simple_spacer::Simple_spacer ()
if (conf < line_len_f_)
{
- force_f_ += (line_len_f_ - conf) * active_springs_stiffness ();
+ force_f_ += (line_len_f_ - conf) * active_springs_stiffness ();
break;
}
else
}
void
-Simple_spacer::add_columns (Link_array<Paper_column> cols)
+Simple_spacer::add_columns (Link_array<Grob> cols)
{
for (int i=0; i < cols.size () - 1; i++)
{
- Paper_column * c = cols [i];
- Column_spring *to_next = 0;
- for (int j =0; !to_next && j < c->springs_.size( ); j++)
+ SCM spring_params = SCM_UNDEFINED;
+ for (SCM s = Spaceable_grob::get_ideal_distances (cols[i]);
+ spring_params == SCM_UNDEFINED && gh_pair_p (s);
+ s = gh_cdr (s))
{
- Column_spring &sp = c->springs_ [j];
- if (sp.other_l_ != cols[i+1])
+ Grob *other = unsmob_grob (gh_caar (s));
+ if (other != cols[i+1])
continue;
- to_next = &sp;
+ spring_params = gh_cdar (s);
}
Spring_description desc;
- if (to_next)
+ if (spring_params != SCM_UNDEFINED)
{
- desc.hooke_f_ = to_next->strength_f_;
- desc.ideal_f_ = to_next->distance_f_;
+ desc.ideal_f_ = gh_scm2double (gh_car (spring_params));
+ desc.hooke_f_ = gh_scm2double (gh_cdr (spring_params));
}
else
{
+ programming_error ("No spring between adjacent columns");
desc.hooke_f_ = 1.0;
desc.ideal_f_ = default_space_f_;
}
}
desc.block_force_f_ = - desc.hooke_f_ * desc.ideal_f_; // block at distance 0
- springs_.push (desc);
+ springs_.push (desc);
}
for (int i=0; i < cols.size () - 1; i++)
{
- Array<Column_rod> * rods = &cols [i]->minimal_dists_;
- for (int j =0; j < rods->size( ); j++)
+ for (SCM s = Spaceable_grob::get_minimum_distances (cols[i]);
+ gh_pair_p (s); s = gh_cdr (s))
{
- int oi = cols.find_i (rods->elem (j).other_l_ );
+ Grob * other = unsmob_grob (gh_caar (s));
+ int oi = cols.find_i (other);
if (oi >= 0)
{
- add_rod (i, oi, rods->elem (j).distance_f_);
+ add_rod (i, oi, gh_scm2double (gh_cdar (s)));
}
}
}
positions->config_.push (positions->config_.top () + springs_[i].length (force_f_));
}
- positions->satisfies_constraints_b_ = (line_len_f_ < 0) || active_b ();
+ positions->satisfies_constraints_b_ = (line_len_f_ < 0) || active_b ();
}
-Spring_description::Spring_description( )
+Spring_description::Spring_description ()
{
ideal_f_ =0.0;
hooke_f_ =0.0;