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