1 files changed, 44 insertions, 0 deletions
diff --git a/hdr/beam.hh b/hdr/beam.hh
new file mode 100644
index 0000000000..4cbc2ea0c2
--- /dev/null
+++ b/hdr/beam.hh
@@ -0,0 +1,44 @@
+/*
+  beam.hh -- part of LilyPond
+
+  (c) 1996 Han-Wen Nienhuys
+*/
+
+#ifndef BEAM_HH
+#define BEAM_HH
+#include "proto.hh"
+#include "spanner.hh"
+#include "list.hh"
+
+/// a beam connects multiple stems 
+struct Beam: public Spanner {
+    List<Stem*> stems;
+    Real slope;
+    Real left_pos;
+    /// -1 below heads, +1 above heads.
+    int dir;   
+
+    /****************/
+    
+    virtual Interval width()const;    
+
+    Spanner *broken_at(const PCol *, const PCol *) const;
+    Beam();
+    void add(Stem*);
+    void process();
+    void calculate();
+    void set_default_dir();
+    void preprocess();
+    Interval height()const;
+    void print() const;
+    
+    void set_stemlens();
+private:
+    void solve_slope();
+    void brew_molecule();
+};
+/** Beam adjusts the stems its owns to make sure that they reach the
+  beam and that point in the correct direction */
+
+#endif // BEAM_HH
+