release: 1.1.62

[lilypond.git] / lily / include / music.hh

diff --git a/lily/include/music.hh b/lily/include/music.hh
index 41531a790218770701f6aa02855a7bc039e2b38b..0bd1e966d07330c1a066670649d844c5a3be10b5 100644 (file)
--- a/lily/include/music.hh
+++ b/lily/include/music.hh
@@ -3,7 +3,7 @@
 
   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>
 */
 
 
@@ -17,38 +17,38 @@
 #include "lily-proto.hh"
 #include "string.hh"
 
-/** In Lily, everything that has a length and a pitch (which can be
-  transposed) is considered "music", 
+/** 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: 
 
-  @seealso Music_list
+  @see Music_sequence
+
   */
 class Music:public Input {
 public:
-    Music_list * parent_music_l_;
     
-    /** what 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