2 music.hh -- declare Music
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
14 #include "virtual-methods.hh"
15 #include "minterval.hh"
16 #include "lily-proto.hh"
20 /** Music is anything that has duration and supports both time compression and
23 In Lily, everything that can be thought to have a length and a pitch
24 (which has a duration which can be transposed) is considered "music",
26 Music is hierarchical:
31 TODO: make a equalp function for general music.
35 Input *origin () const;
36 void set_spot (Input);
38 SCM get_mus_property (const char*) const;
39 SCM get_mus_property (SCM) const;
40 void set_mus_property (const char * , SCM val);
41 void set_immutable_mus_property (const char * , SCM val);
42 void set_immutable_mus_property (SCM key, SCM val);
43 void set_mus_property (SCM , SCM val);
44 void set_mus_pointer (const char*, SCM val);
45 SCM remove_mus_property (const char* nm);
47 virtual Pitch to_relative_octave (Pitch);
49 /// The duration of this piece of music
50 virtual Moment length_mom () const;
53 /// Transpose, with the interval central C to #p#
54 virtual void transpose (Pitch p);
56 /// Scale the music in time by #factor#.
57 virtual void compress (Moment factor);
58 VIRTUAL_COPY_CONS(Music);
59 Music (Music const &m);
62 DECLARE_SMOBS(Music,);
63 SCM immutable_property_alist_;
64 SCM mutable_property_alist_;
68 Music * unsmob_music (SCM);