2 music.hh -- declare Music
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 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:
34 SCM immutable_property_alist_;
35 SCM mutable_property_alist_;
37 Input *origin () const;
38 void set_spot (Input);
40 SCM get_mus_property (const char*) const;
41 SCM get_mus_property (SCM) const;
42 void set_mus_property (const char * , SCM val);
43 void set_immutable_mus_property (const char * , SCM val);
44 void set_immutable_mus_property (SCM key, SCM val);
45 void set_mus_property (SCM , SCM val);
46 void set_mus_pointer (const char*, SCM val);
47 SCM remove_mus_property (const char* nm);
49 virtual SCM do_derived_mark ();
50 virtual Musical_pitch to_relative_octave (Musical_pitch);
52 /// The duration of this piece of music
53 virtual Moment length_mom () const;
57 /// Transpose, with the interval central C to #p#
58 virtual void transpose (Musical_pitch p);
60 /// Scale the music in time by #factor#.
61 virtual void compress (Moment factor);
62 VIRTUAL_COPY_CONS(Music);
63 Music (Music const &m);
66 virtual void do_print() const;
70 Music * unsmob_music (SCM);