lily/include/slur-scoring.hh

   1 /*
   2   slur-scoring.hh -- declare Slur_score_parameters
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2004--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7
   8 */
   9
  10 #ifndef SLUR_SCORING_HH
  11 #define SLUR_SCORING_HH
  12
  13 #include "box.hh"
  14 #include "lily-proto.hh"
  15 #include "parray.hh"
  16 #include "lily-guile.hh"
  17
  18 struct Slur_score_parameters
  19 {
  20   int region_size_;
  21   Real head_encompass_penalty_;
  22   Real stem_encompass_penalty_;
  23   Real closeness_factor_;
  24   Real edge_attraction_factor_;
  25   Real same_slope_penalty_;
  26   Real steeper_slope_factor_;
  27   Real non_horizontal_penalty_;
  28   Real max_slope_;
  29   Real max_slope_factor_;
  30   Real extra_object_collision_;
  31   Real accidental_collision_;
  32   Real free_slur_distance_;
  33   Real free_head_distance_;
  34   Real extra_encompass_free_distance_;
  35   Real absolute_closeness_measure_;
  36   Real edge_slope_exponent_;
  37   Real head_slur_distance_max_ratio_;
  38   Real head_slur_distance_factor_;
  39
  40   void fill (Grob *him);
  41 };
  42
  43
  44
  45 struct Extra_collision_info
  46 {
  47   Real idx_;
  48   Box extents_;
  49   Real penalty_;
  50   Grob * grob_;
  51
  52   Extra_collision_info (Grob *g, Real idx, Interval x, Interval y, Real p)
  53   {
  54     idx_ = idx;
  55     extents_[X_AXIS] = x;
  56     extents_[Y_AXIS] = y;
  57     penalty_ = p;
  58     grob_ = g;
  59   }
  60   Extra_collision_info ()
  61   {
  62     idx_ = 0.0;
  63     penalty_ = 0.;
  64     grob_ = 0;
  65   }
  66 };
  67
  68
  69 struct Encompass_info
  70 {
  71   Real x_;
  72   Real stem_;
  73   Real head_;
  74   Encompass_info ()
  75   {
  76     x_ = 0.0;
  77     stem_ = 0.0;
  78     head_ = 0.0;
  79   }
  80   Real get_point (Direction dir) const
  81   {
  82     Interval y;
  83     y.add_point (stem_);
  84     y.add_point (head_);
  85     return y[dir];
  86   }
  87 };
  88
  89 struct Bound_info
  90 {
  91   Box stem_extent_;
  92   Direction stem_dir_;
  93   Item *bound_;
  94   Grob *note_column_;
  95   Grob *slur_head_;
  96   Grob *staff_;
  97   Grob *stem_;
  98   Interval slur_head_extent_;
  99   Real staff_space_;
 100
 101   Bound_info ()
 102   {
 103     stem_ = 0;
 104     staff_ = 0;
 105     slur_head_ = 0;
 106     stem_dir_ = CENTER;
 107     note_column_ = 0;
 108   }
 109 };
 110
 111 struct Slur_score_state
 112 {
 113   Spanner *slur_;
 114   Grob *common_[NO_AXES];
 115   bool valid_;
 116   bool edge_has_beams_;
 117   bool is_broken_;
 118   bool has_same_beam_;
 119
 120   Real musical_dy_;
 121   Link_array<Grob> columns_;
 122   Array<Encompass_info> encompass_infos_;
 123   Array<Extra_collision_info> extra_encompass_infos_;
 124
 125   Direction dir_;
 126   Slur_score_parameters parameters_;
 127   Drul_array<Bound_info> extremes_;
 128   Drul_array<Offset> base_attachments_;
 129   Link_array<Slur_configuration> configurations_;
 130   Real staff_space_;
 131   Real thickness_;
 132
 133   Slur_score_state();
 134   ~Slur_score_state();
 135
 136   Bezier get_best_curve ();
 137   void fill (Grob*);
 138   void set_next_direction ();
 139
 140   Drul_array<Bound_info> get_bound_info () const;
 141   void generate_curves () const;
 142   Link_array<Slur_configuration> enumerate_attachments (Drul_array<Real> end_ys) const;
 143   Drul_array<Offset> get_base_attachments() const;
 144   Drul_array<Real> get_y_attachment_range() const;
 145   Encompass_info get_encompass_info (Grob *col) const;
 146   Array<Extra_collision_info> get_extra_encompass_infos () const;
 147   Real move_away_from_staffline (Real y, Grob *on_staff) const;
 148   int get_closest_index (SCM inspect_quants) const;
 149 };
 150
 151
 152 void set_slur_control_points (Grob *me);
 153
 154 #endif /* SLUR_SCORING_HH */