2 music.hh -- declare Music
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
14 #include "virtual-methods.hh"
15 #include "minterval.hh"
16 #include "lily-proto.hh"
19 #include "music-constructor.hh"
22 #define is_mus_type(x) internal_is_music_type(ly_symbol2scm (x))
24 /** Music is anything that has duration and supports both time compression and
27 In Lily, everything that can be thought to have a length and a pitch
28 (which has a duration which can be transposed) is considered "music",
30 Music is hierarchical:
35 TODO: make a equalp function for general music.
41 Music (Music const &m);
42 VIRTUAL_COPY_CONSTRUCTOR (Music, Music);
44 Input *origin () const;
45 void set_spot (Input);
47 SCM internal_get_property (SCM) const;
48 void internal_set_property (SCM , SCM val);
49 SCM get_property_alist (bool mut) const;
50 bool internal_is_music_type (SCM) const;
52 virtual Pitch to_relative_octave (Pitch);
54 /// The duration of this piece of music
55 virtual Moment get_length () const;
56 virtual Moment start_mom () const;
58 /// Transpose, with the interval central C to #p#
59 virtual void transpose (Pitch p);
61 /// Scale the music in time by #factor#.
62 virtual void compress (Moment factor);
65 DECLARE_SMOBS (Music,);
66 SCM immutable_property_alist_;
67 SCM mutable_property_alist_;
68 friend SCM ly_extended_make_music(SCM,SCM);
72 DECLARE_UNSMOB(Music,music);
74 Music* make_music_by_name (SCM sym);