#define BEAM_HH
#include "lily-proto.hh"
-#include "spanner.hh"
+#include "lily-guile.hh"
/** a beam connects multiple stems.
beam and that point in the correct direction (urg?)
elt_properties:
- y-position: real (position of left edge)
- height: real (dy)
+
+ y-position -- real (position of left edge)
- damping: amount of beam slope damping. (int)
- should beam slope be damped? 0: no, 1: yes, 100000: horizontal beams
+ height -- real (dy)
+
+
+ Read-only
+ =========
+
+ flag-width-function --
+
+ damping -- amount of beam slope damping. (int)
+ should beam slope be damped? 0: no, 1: yes, 100000: horizontal beams
+
+ default-neutral-direction -- which direction to choose if we're in
+ the middle of the staff
+
+ thickness -- weight of beams, in staffspace
+
+ space-function -- function of type multiplicity -> real (in staffspace)
+
+ beamed-stem-shorten --
+
+ height-quants --
+
+ vertical-position-quant-function --
+
+ dir-function --
+
+ damping -- damping factor (real).
+
+ outer-stem-length-limit -- catch suspect beam slopes, set slope to zero if
+ outer stem is lengthened more than this (in staffspace)
+
+ slope-limit -- set slope to zero if slope is running away steeper than this.
*/
-class Beam : public Spanner
+class Beam
{
public:
- static SCM brew_molecule (SCM);
-
-
- int stem_count () const;
- Stem* stem (int) const;
- Stem* stem_top () const;
- int visible_stem_count () const;
- Stem* first_visible_stem () const;
- Stem* last_visible_stem () const;
- static Real rest_collision_callback (Score_element const*,Axis);
+ static int visible_stem_count (Score_element*);
+ static Item* first_visible_stem (Score_element*);
+ static Item* last_visible_stem (Score_element*);
+ static bool has_interface (Score_element*);
+ static void set_interface (Score_element*);
+ static Real rest_collision_callback (Score_element *,Axis);
Beam (SCM);
- void add_stem (Stem*);
- void set_grouping (Rhythmic_grouping def, Rhythmic_grouping current);
- void set_beaming (Beaming_info_list *);
- void set_stemlens ();
- VIRTUAL_COPY_CONS(Score_element);
-
- int get_multiplicity () const;
-
-public:
-
- SCM member_before_line_breaking ();
+ static void add_stem (Score_element*,Score_element*);
+ static void set_beaming (Score_element*,Beaming_info_list *);
+ static void set_stemlens (Score_element*);
+ static int get_multiplicity (Score_element*me);
+ static SCM brew_molecule (SCM);
static SCM before_line_breaking (SCM);
- SCM member_after_line_breaking ();
static SCM after_line_breaking (SCM);
- SCM member_brew_molecule () const;
+ static Molecule stem_beams (Score_element*,Item *here, Item *next, Item *prev);
- Molecule stem_beams (Stem *here, Stem *next, Stem *prev) const;
private:
- Direction get_default_dir () const;
- void set_stem_directions ();
- void auto_knees ();
- bool auto_knee (String gap_str, bool interstaff_b);
- void set_stem_shorten ();
- void calc_default_position_and_height (Real* y, Real* dy) const;
- bool suspect_slope_b (Real y, Real dy) const;
- Real calc_slope_damping_f (Real dy) const;
- Real calc_stem_y_f (Stem* s, Real y, Real dy) const;
- Real check_stem_length_f (Real y, Real dy) const;
- void set_stem_length (Real y, Real dy);
- Real quantise_dy_f (Real dy) const;
- Real quantise_y_f (Real y, Real dy, int quant_dir);
- int forced_stem_count () const;
+ static Direction get_default_dir (Score_element*);
+ static void set_stem_directions (Score_element*);
+ static void auto_knees (Score_element*);
+ static bool auto_knee (Score_element*,String gap_str, bool interstaff_b);
+ static void set_stem_shorten (Score_element*);
+ static void calc_default_position_and_height (Score_element*,Real* y, Real* dy);
+ static bool suspect_slope_b (Score_element*, Real y, Real dy);
+ static Real calc_slope_damping_f (Score_element*, Real dy);
+ static Real calc_stem_y_f (Score_element*, Item* s, Real y, Real dy);
+ static Real check_stem_length_f (Score_element*, Real y, Real dy);
+ static void set_stem_length (Score_element*, Real y, Real dy);
+ static Real quantise_dy_f (Score_element*, Real dy);
+ static Real quantise_y_f (Score_element*, Real y, Real dy, int quant_dir);
+ static int forced_stem_count (Score_element*);
};
#endif // BEAM_HH