lily/pitch-interval.cc

   1 /*
   2   pitch-interval.cc -- implement Pitch_interval
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2004--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "pitch-interval.hh"
  10
  11 #include "interval.tcc"
  12
  13 Pitch_interval::Pitch_interval (Pitch p1, Pitch p2)
  14 {
  15   at (LEFT) = p1;
  16   at (RIGHT) = p2;
  17 }
  18
  19 Pitch_interval::Pitch_interval ()
  20 {
  21   at (LEFT) = Pitch (100, 0, 0);
  22   at (RIGHT) = Pitch (-100, 0, 0);
  23 }
  24
  25 bool
  26 Pitch_interval::is_empty () const
  27 {
  28   return at (LEFT) > at (RIGHT);
  29 }
  30
  31 Drul_array<bool>
  32 Pitch_interval::add_point (Pitch p)
  33 {
  34   Drul_array<bool> expansions(false,false);
  35   if (at (LEFT).tone_pitch () > p.tone_pitch ())
  36     {
  37       at (LEFT) = p;
  38       expansions [LEFT] = true;
  39     }
  40   if (at (RIGHT).tone_pitch () < p.tone_pitch ())
  41     {
  42       at (RIGHT) = p;
  43       expansions [RIGHT] = true;
  44     }
  45   return expansions;
  46 }
  47
  48
  49 Pitch_lexicographic_interval::Pitch_lexicographic_interval (Pitch p1, Pitch p2)
  50 {
  51   at (LEFT) = p1;
  52   at (RIGHT) = p2;
  53 }
  54
  55 Pitch_lexicographic_interval::Pitch_lexicographic_interval ()
  56 {
  57   at (LEFT) = Pitch (100, 0, 0);
  58   at (RIGHT) = Pitch (-100, 0, 0);
  59 }
  60
  61 bool
  62 Pitch_lexicographic_interval::is_empty () const
  63 {
  64   return at (LEFT) > at (RIGHT);
  65 }
  66
  67 Drul_array<bool>
  68 Pitch_lexicographic_interval::add_point (Pitch p)
  69 {
  70   Drul_array<bool> expansions(false,false);
  71   if (at (LEFT) > p)
  72     {
  73       at (LEFT) = p;
  74       expansions [LEFT] = true;
  75     }
  76   if (at (RIGHT) < p)
  77     {
  78       at (RIGHT) = p;
  79       expansions [RIGHT] = true;
  80     }
  81   return expansions;
  82 }