lily/repeated-music.cc

   1 /*
   2   repeated-music.cc --  implement Repeated_music
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7
   8  */
   9
  10 #include "repeated-music.hh"
  11 #include "music-list.hh"
  12 #include "musical-pitch.hh"
  13 #include "debug.hh"
  14
  15 Music *
  16 Repeated_music::body ()const
  17 {
  18   return unsmob_music (get_mus_property ("body"));
  19 }
  20
  21 Music_sequence*
  22 Repeated_music::alternatives ()const
  23 {
  24   return dynamic_cast<Music_sequence*>  (unsmob_music (get_mus_property ("alternatives")));
  25 }
  26
  27 Repeated_music::Repeated_music(Music *beg, int times, Music_sequence * alts)
  28 {
  29   set_mus_property ("body", beg->self_scm ());
  30   fold_b_ = false;
  31   repeats_i_ = times;
  32   volta_fold_b_ = true;
  33   if (alts)
  34     {
  35       alts->truncate (times);
  36       set_mus_property ("alternatives", alts->self_scm ());
  37     }
  38 }
  39
  40 Repeated_music::Repeated_music (Repeated_music const &s)
  41   : Music (s)
  42 {
  43   repeats_i_ = s.repeats_i_;
  44   fold_b_ = s.fold_b_;
  45   volta_fold_b_ = s.volta_fold_b_;
  46   type_ = s.type_;
  47 }
  48
  49
  50 void
  51 Repeated_music::do_print () const
  52 {
  53 #ifndef NPRINT
  54   DEBUG_OUT << "Fold = " << fold_b_ << " reps: " << repeats_i_;
  55
  56   if (body ())
  57     body ()->print();
  58
  59   if (alternatives ())
  60     alternatives ()->print();
  61 #endif
  62 }
  63
  64 Musical_pitch
  65 Repeated_music::to_relative_octave (Musical_pitch p)
  66 {
  67   if (body ())
  68     p = body ()->to_relative_octave (p);
  69
  70   Musical_pitch last = p ;
  71   if (alternatives ())
  72     for (SCM s = alternatives ()->music_list (); gh_pair_p (s);  s = gh_cdr (s))
  73       unsmob_music (gh_car (s))->to_relative_octave (p);
  74
  75
  76   return last;
  77 }
  78
  79 void
  80 Repeated_music::transpose (Musical_pitch p)
  81 {
  82   if (body ())
  83     body ()->transpose (p);
  84
  85   if (alternatives ())
  86     alternatives ()->transpose (p);
  87 }
  88
  89 void
  90 Repeated_music::compress (Moment p)
  91 {
  92   if (body ())
  93     body ()->compress (p);
  94
  95   if (alternatives ())
  96     alternatives ()->compress (p);
  97 }
  98
  99 Moment
 100 Repeated_music::alternatives_length_mom () const
 101 {
 102   if (!alternatives () )
 103     return 0;
 104
 105   if  (fold_b_)
 106     return alternatives ()->maximum_length ();
 107
 108   Moment m =0;
 109   int done =0;
 110
 111   SCM p = alternatives ()->music_list ();
 112    while (gh_pair_p (p) && done < repeats_i_)
 113     {
 114       m = m + unsmob_music (gh_car (p))->length_mom ();
 115       done ++;
 116       if (volta_fold_b_
 117           || repeats_i_ - done < alternatives ()->length_i ())
 118       p = gh_cdr (p);
 119     }
 120   return m;
 121 }
 122
 123 Moment
 124 Repeated_music::body_length_mom () const
 125 {
 126   Moment m = 0;
 127   if (body ())
 128     {
 129       m = body ()->length_mom ();
 130       if (!fold_b_ && !volta_fold_b_)
 131         m *= Rational (repeats_i_);
 132     }
 133   return m;
 134 }
 135
 136 Moment
 137 Repeated_music::length_mom () const
 138 {
 139   return body_length_mom () + alternatives_length_mom ();
 140 }
 141