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