source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "lily-proto.hh"
#include "string.hh"
-/**
- Anything which has length or pitch.
+/** Music is anything that has duration and supports both time compression and
+ transposition.
In Lily, everything that can be thought to have a length and a pitch
(which has a duration which can be transposed) is considered "music",
Music is hierarchical:
- @see Music_list
+ @see Music_sequence
*/
class Music:public Input {
public:
- Music_list * parent_music_l_;
- /** The kind of iterator needed to walk this music. This doesn't
- make sense for simple (ie non-list) music, but it does no harm
- here. Yes, it did harm Music_list: you can forget to copy it.
-
- */
- String type_str_;
-
- /// what name (or look for this name)
- String id_str_;
-
- virtual MInterval time_int()const;
- virtual ~Music(){}
- void print() const;
- virtual void transpose (Melodic_req const *);
- virtual void translate (Moment dt);
- VIRTUAL_COPY_CONS(Music,Music);
- DECLARE_MY_RUNTIME_TYPEINFO;
- Music();
-protected:
- virtual void do_print() const;
+
+ virtual Musical_pitch to_relative_octave (Musical_pitch);
+
+ /// The duration of this piece of music
+ virtual Moment length_mom () const;
+
+ virtual ~Music(){}
+ void print() const;
+ /// Transpose, with the interval central C to #p#
+ virtual void transpose (Musical_pitch p);
+
+ /// Scale the music in time by #factor#.
+ virtual void compress (Moment factor);
+ VIRTUAL_COPY_CONS(Music);
+ Music();
+protected:
+ virtual void do_print() const;
};
#endif // MUSIC_HH