source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include "lookup.hh"
-#include "paper-def.hh"
#include "tie.hh"
-#include "note-head.hh"
+
+#include "main.hh"
#include "bezier.hh"
+#include "directional-element-interface.hh"
+#include "font-interface.hh"
+#include "grob-array.hh"
+#include "lookup.hh"
+#include "note-head.hh"
+#include "output-def.hh"
#include "paper-column.hh"
-#include "debug.hh"
+#include "rhythmic-head.hh"
+#include "spanner.hh"
#include "staff-symbol-referencer.hh"
-#include "directional-element-interface.hh"
-#include "molecule.hh"
-#include "bezier-bow.hh"
#include "stem.hh"
+#include "text-interface.hh"
+#include "tie-column.hh"
+#include "tie-configuration.hh"
+#include "tie-formatting-problem.hh"
+#include "warn.hh"
+#include "semi-tie-column.hh"
-void
-Tie::set_head (Direction d, Item * head_l)
-{
- assert (!head (d));
- index_set_cell (get_elt_property ("heads"), d, head_l->self_scm_);
-
- set_bounds (d, head_l);
- add_dependency (head_l);
-}
-Tie::Tie()
+bool
+Tie::less (Grob *const &s1,
+ Grob *const &s2)
{
- set_elt_property ("heads", gh_cons (SCM_EOL, SCM_EOL));
- dy_f_drul_[LEFT] = dy_f_drul_[RIGHT] = 0.0;
- dx_f_drul_[LEFT] = dx_f_drul_[RIGHT] = 0.0;
-
+ return Tie::get_position (s1) < Tie::get_position (s2);
}
-Note_head*
-Tie::head (Direction d) const
+void
+Tie::set_head (Grob *me, Direction d, Grob *h)
{
- SCM c = get_elt_property ("heads");
- c = index_cell (c, d);
-
- return dynamic_cast<Note_head*> (unsmob_element (c));
+ dynamic_cast<Spanner *> (me)->set_bound (d, h);
}
-
-/*
- ugh: direction of the Tie is more complicated. See [Ross] p136 and further
- */
-Direction
-Tie::get_default_dir () const
+Grob *
+Tie::head (Grob *me, Direction d)
{
- Stem * sl = head(LEFT) ? head (LEFT)->stem_l () :0;
- Stem * sr = head(RIGHT) ? head (RIGHT)->stem_l () :0;
-
- if (sl && directional_element (sl).get () == UP
- && sr && directional_element (sr).get () == UP)
- return DOWN;
- else
- return UP;
-
-#if 0
- Real p1 = Staff_symbol_referencer_interface (head (LEFT)).position_f () ;
- Real p2 = Staff_symbol_referencer_interface (head (RIGHT)).position_f () ;
+ if (is_direction (me->get_property ("head-direction")))
+ {
+ Direction hd = to_dir (me->get_property ("head-direction"));
+
+ return (hd == d)
+ ? unsmob_grob (me->get_object ("note-head"))
+ : 0;
+ }
- int m = int (p1 + p2);
-
- /*
- If dir is not determined: inverse of stem: down
- (see stem::get_default_dir ())
- */
- Direction neutral_dir = (Direction)(int)paper_l ()->get_var ("stem_default_neutral_direction");
- return (m == 0) ? other_dir (neutral_dir) : (m < 0) ? DOWN : UP;
-#endif
+ Item *it = dynamic_cast<Spanner*> (me)->get_bound (d);
+ if (Note_head::has_interface (it))
+ return it;
+ else
+ return 0;
}
-void
-Tie::do_add_processing()
+int
+Tie::get_column_rank (Grob *me, Direction d)
{
- if (!(head (LEFT) && head (RIGHT)))
- warning (_ ("lonely tie"));
-
- Direction d = LEFT;
- Drul_array<Note_head *> new_head_drul;
- new_head_drul[LEFT] = head(LEFT);
- new_head_drul[RIGHT] = head(RIGHT);
- do {
- if (!head (d))
- new_head_drul[d] = head((Direction)-d);
- } while (flip(&d) != LEFT);
-
- index_set_cell (get_elt_property ("heads"), LEFT, new_head_drul[LEFT]->self_scm_ );
- index_set_cell (get_elt_property ("heads"), RIGHT, new_head_drul[LEFT]->self_scm_ );
+ Spanner *span = dynamic_cast<Spanner *> (me);
+ Grob *h = head (me, d);
+ if (!h)
+ h = span->get_bound (d);
+ Grob *col = dynamic_cast<Item *> (h)->get_column ();
+ return Paper_column::get_rank (col);
}
-void
-Tie::do_post_processing()
+int
+Tie::get_position (Grob *me)
{
- if (!head (LEFT) && !head (RIGHT))
+ Direction d = LEFT;
+ do
{
- programming_error ("Tie without heads.");
- set_elt_property ("transparent", SCM_BOOL_T);
- set_empty (X_AXIS);
- set_empty (Y_AXIS);
- return;
+ Grob *h = head (me, d);
+ if (h)
+ return (int) rint (Staff_symbol_referencer::get_position (h));
}
+ while (flip (&d) != LEFT);
- if (!directional_element (this).get ())
- directional_element (this).set (get_default_dir ());
-
- Real staff_space = paper_l ()->get_var ("interline");
- Real half_staff_space = staff_space / 2;
- Real x_gap_f = paper_l ()->get_var ("tie_x_gap");
- Real y_gap_f = paper_l ()->get_var ("tie_y_gap");
-
- /*
- Slur and tie placement [OSU]
+ /*
- Ties:
+ TODO: this is theoretically possible for ties across more than 2
+ systems.. We should look at the first broken copy.
+
+ */
+ programming_error ("Tie without heads. Suicide");
+ me->suicide ();
+ return 0;
+}
- * x = inner vertical tangent - d * gap
+/*
+ Default: Put the tie oppositie of the stem [Wanske p231]
- */
+ In case of chords: Tie_column takes over
+ The direction of the Tie is more complicated (See [Ross] p136 and
+ further).
- /*
- OSU: not different for outer notes, so why all this code?
- ie, can we drop this, or should it be made switchable.
- */
-#if 0
+ (what about linebreaks? )
+*/
+Direction
+Tie::get_default_dir (Grob *me)
+{
+ Drul_array<Grob*> stems;
Direction d = LEFT;
do
{
- Real head_width_f = head (d)
- ? head (d)->extent (X_AXIS).length ()
- : 0;
- /*
- side attached to outer (upper or lower) notehead of chord
- */
- if (head (d)
- /*
-
- a~a~a;
-
- to second tie, middle notehead seems not extremal
-
- Getting scared a bit by score-element's comment:
- // is this a good idea?
- */
- // FIXME extremal deprecated
- && (head (d)->get_elt_property ("extremal")
- != SCM_UNDEFINED))
- {
- if (d == LEFT)
- dx_f_drul_[d] += head_width_f;
- dx_f_drul_[d] += -d * x_gap_f;
- }
- /*
- side attached to inner notehead
- */
- else
- {
- dx_f_drul_[d] += -d * head_width_f;
- }
- } while (flip (&d) != LEFT);
-
-#else
-
- if (head (LEFT))
- dx_f_drul_[LEFT] = head (LEFT)->extent (X_AXIS).length ();
- else
- dx_f_drul_[LEFT] = get_broken_left_end_align ();
- dx_f_drul_[LEFT] += x_gap_f;
- dx_f_drul_[RIGHT] -= x_gap_f;
-
-#endif
-
- /*
- Slur and tie placement [OSU] -- check this
-
- Ties:
-
- * y = dx < 5ss: horizontal tangent
- y = dx >= 5ss: y next interline - d * 0.25 ss
-
- which probably means that OSU assumes that
-
- dy <= 5 dx
+ Grob *stem = head (me, d) ? Rhythmic_head::get_stem (head (me, d)) : 0;
+ if (stem)
+ stem = Stem::is_invisible (stem) ? 0 : stem;
- for smal slurs
- */
-
-
- Real ypos = head (LEFT)
- ? Staff_symbol_referencer_interface (head (LEFT)).position_f ()
- : Staff_symbol_referencer_interface (head (RIGHT)).position_f () ;
-
- Real y_f = half_staff_space * ypos;
- int ypos_i = int (ypos);
-
- Real dx_f = extent (X_AXIS).length () + dx_f_drul_[RIGHT] - dx_f_drul_[LEFT];
- Direction dir = directional_element (this).get();
- if (dx_f < paper_l ()->get_var ("tie_staffspace_length"))
+ stems[d] = stem;
+ }
+ while (flip (&d)!= LEFT);
+
+ if (stems[LEFT] && stems[RIGHT])
{
- if (abs (ypos_i) % 2)
- y_f += dir * half_staff_space;
- y_f += dir * y_gap_f;
+ if (get_grob_direction (stems[LEFT]) == UP
+ && get_grob_direction (stems[RIGHT]) == UP)
+ return DOWN;
}
- else
+ else if (stems[LEFT] || stems[RIGHT])
{
- if (! (abs (ypos_i) % 2))
- y_f += dir * half_staff_space;
- y_f += dir * half_staff_space;
- y_f -= dir * y_gap_f;
+ Grob *s = stems[LEFT] ? stems[LEFT] : stems[RIGHT];
+ return -get_grob_direction (s);
}
+ else if (int p = get_position (me))
+ return Direction (sign (p));
- dy_f_drul_[LEFT] = dy_f_drul_[RIGHT] = y_f;
+ return UP;
}
-
-Array<Rod>
-Tie::get_rods () const
+MAKE_SCHEME_CALLBACK (Tie, calc_direction, 1);
+SCM
+Tie::calc_direction (SCM smob)
{
- Array<Rod> a;
- Rod r;
- r.item_l_drul_ = spanned_drul_;
- r.distance_f_ = paper_l ()->get_var ("tie_x_minimum");
- a.push (r);
- return a;
-}
-
+ Grob *me = unsmob_grob (smob);
+ Grob *yparent = me->get_parent (Y_AXIS);
+ if ((Tie_column::has_interface (yparent)
+ || Semi_tie_column::has_interface (yparent))
+ && unsmob_grob_array (yparent->get_object ("ties"))
+ // && unsmob_grob_array (yparent->get_object ("ties"))->size () > 1
+ )
+ {
+ /* trigger positioning. */
+ (void) yparent->get_property ("positioning-done");
+ return me->get_property_data ("direction");
+ }
+ else
+ return scm_from_int (Tie::get_default_dir (me));
+}
-Molecule*
-Tie::do_brew_molecule_p () const
+SCM
+Tie::get_default_control_points (Grob *me_grob)
{
- Real thick = paper_l ()->get_var ("tie_thickness");
- Bezier one = get_curve ();
+ Spanner *me = dynamic_cast<Spanner*> (me_grob);
+ Grob *common = me;
+ common = me->get_bound (LEFT)->common_refpoint (common, X_AXIS);
+ common = me->get_bound (RIGHT)->common_refpoint (common, X_AXIS);
+
+ Tie_formatting_problem problem;
+ problem.from_tie (me);
+
+ Tie_specification spec = problem.get_tie_specification (0);
+ if (!me->is_live ())
+ return SCM_EOL;
- Molecule a;
- SCM d = get_elt_property ("dashed");
- if (gh_number_p (d))
- a = lookup_l ()->dashed_slur (one, thick, gh_scm2int (d));
- else
- a = lookup_l ()->slur (one, directional_element (this).get () * thick, thick);
- return new Molecule (a);
+ Ties_configuration conf
+ = problem.generate_optimal_configuration ();
+
+ return get_control_points (me, problem.common_x_refpoint (),
+ conf[0], problem.details_);
}
-
-
-Bezier
-Tie::get_curve () const
+SCM
+Tie::get_control_points (Grob *me,
+ Grob *common,
+ Tie_configuration const &conf,
+ Tie_details const &details
+ )
{
- Bezier_bow b (get_encompass_offset_arr (), directional_element (this).get ());
-
- b.ratio_ = paper_l ()->get_var ("slur_ratio");
- b.height_limit_ = paper_l ()->get_var ("slur_height_limit");
- b.rc_factor_ = paper_l ()->get_var ("slur_rc_factor");
+ Bezier b = conf.get_transformed_bezier (details);
+ b.translate (Offset (- me->relative_coordinate (common, X_AXIS), 0));
- b.calculate ();
- return b.get_curve ();
+ SCM controls = SCM_EOL;
+ for (int i = 4; i--;)
+ {
+ if (!b.control_[i].is_sane ())
+ programming_error ("Insane offset");
+ controls = scm_cons (ly_offset2scm (b.control_[i]), controls);
+ }
+ return controls;
}
-#if 0
-
-/*
- TODO: FIXME.
- */
-/*
- Clipping
+MAKE_SCHEME_CALLBACK (Tie, calc_control_points, 1);
+SCM
+Tie::calc_control_points (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+
+ Grob *yparent = me->get_parent (Y_AXIS);
+ if ((Tie_column::has_interface (yparent)
+ || Semi_tie_column::has_interface (yparent))
+ && unsmob_grob_array (yparent->get_object ("ties"))
+ // && unsmob_grob_array (yparent->get_object ("ties"))->size () > 1
+ )
+ {
+ /* trigger positioning. */
+ (void) yparent->get_property ("positioning-done");
+ }
- This function tries to address two issues:
- * the tangents of the slur should always point inwards
- in the actual slur, i.e. *after rotating back*.
+ SCM cp = me->get_property_data ("control-points");
+ if (!scm_is_pair (cp))
+ {
+ cp = get_default_control_points (me);
+ }
- * slurs shouldn't be too high
- let's try : h <= 1.2 b && h <= 3 staffheight?
+ return cp;
+}
- We could calculate the tangent of the bezier curve from
- both ends going inward, and clip the slur at the point
- where the tangent (after rotation) points up (or inward
- with a certain maximum angle).
-
- However, we assume that real clipping is not the best
- answer. We expect that moving the outer control point up
- if the slur becomes too high will result in a nicer slur
- after recalculation.
-
- Knowing that the tangent is the line through the first
- two control points, we'll clip (move the outer control
- point upwards) too if the tangent points outwards.
+/*
+ TODO: merge with Slur::print.
*/
-
-bool
-Bezier_Tie::calc_clipping ()
+MAKE_SCHEME_CALLBACK (Tie, print, 1);
+SCM
+Tie::print (SCM smob)
{
- Real clip_height = paper_l_->get_var ("slur_clip_height");
- Real clip_ratio = paper_l_->get_var ("slur_clip_ratio");
- Real clip_angle = paper_l_->get_var ("slur_clip_angle");
-
- Real b = curve_.control_[3][X_AXIS] - curve_.control_[0][X_AXIS];
- Real clip_h = clip_ratio * b <? clip_height;
- Real begin_h = curve_.control_[1][Y_AXIS] - curve_.control_[0][Y_AXIS];
- Real end_h = curve_.control_[2][Y_AXIS] - curve_.control_[3][Y_AXIS];
- Real begin_dy = 0 >? begin_h - clip_h;
- Real end_dy = 0 >? end_h - clip_h;
+ Grob *me = unsmob_grob (smob);
- Real pi = M_PI;
- Real begin_alpha = (curve_.control_[1] - curve_.control_[0]).arg () + dir_ * alpha_;
- Real end_alpha = pi - (curve_.control_[2] - curve_.control_[3]).arg () - dir_ * alpha_;
+ SCM cp = me->get_property ("control-points");
- Real max_alpha = clip_angle / 90 * pi / 2;
- if ((begin_dy < 0) && (end_dy < 0)
- && (begin_alpha < max_alpha) && (end_alpha < max_alpha))
- return false;
+ Real staff_thick = Staff_symbol_referencer::line_thickness (me);
+ Real base_thick = staff_thick * robust_scm2double (me->get_property ("thickness"), 1);
+ Real line_thick = staff_thick * robust_scm2double (me->get_property ("line-thickness"), 1);
- transform_back ();
-
- if ((begin_dy > 0) || (end_dy > 0))
+ Bezier b;
+ int i = 0;
+ for (SCM s = cp; scm_is_pair (s); s = scm_cdr (s))
{
- Real dy = (begin_dy + end_dy) / 4;
- dy *= cos (alpha_);
- encompass_[0][Y_AXIS] += dir_ * dy;
- encompass_.top ()[Y_AXIS] += dir_ * dy;
+ b.control_[i] = ly_scm2offset (scm_car (s));
+ i++;
}
+
+ Stencil a;
+
+ SCM p = me->get_property ("dash-period");
+ SCM f = me->get_property ("dash-fraction");
+ if (scm_is_number (p) && scm_is_number (f))
+ a = Lookup::dashed_slur (b,
+ line_thick,
+ robust_scm2double (p, 1.0),
+ robust_scm2double (f, 0));
else
+ a = Lookup::slur (b,
+ get_grob_direction (me) * base_thick,
+ line_thick);
+
+#if DEBUG_TIE_SCORING
+ SCM quant_score = me->get_property ("quant-score");
+
+ if (to_boolean (me->layout ()
+ ->lookup_variable (ly_symbol2scm ("debug-tie-scoring")))
+ && scm_is_string (quant_score))
{
- //ugh
- Real c = 0.4;
- if (begin_alpha >= max_alpha)
- begin_dy = 0 >? c * begin_alpha / max_alpha * begin_h;
- if (end_alpha >= max_alpha)
- end_dy = 0 >? c * end_alpha / max_alpha * end_h;
-
- encompass_[0][Y_AXIS] += dir_ * begin_dy;
- encompass_.top ()[Y_AXIS] += dir_ * end_dy;
-
- Offset delta = encompass_.top () - encompass_[0];
- alpha_ = delta.arg ();
- }
+ string str;
+ SCM properties = Font_interface::text_font_alist_chain (me);
- to_canonic_form ();
+ Stencil tm = *unsmob_stencil (Text_interface::interpret_markup
+ (me->layout ()->self_scm (), properties,
+ quant_score));
+ tm.translate (Offset (b.control_[3][X_AXIS] + 0.5,
+ b.control_[0][Y_AXIS] * 2));
+ tm = tm.in_color (1, 0, 0);
- return true;
-}
+ /*
+ It would be nice if we could put this in a different layer,
+ but alas, this must be done with a Tie override.
+ */
+ a.add_stencil (tm);
+ }
#endif
+ return a.smobbed_copy ();
+}
+
+ADD_INTERFACE (Tie,
+ "A horizontal curve connecting two noteheads. \n\n"
+ ,
+
+
+ /* properties */
+ "avoid-slur " // UGH.
+ "control-points "
+ "dash-fraction "
+ "dash-period "
+ "details "
+ "direction "
+ "separation-item "
+ "head-direction "
+ "line-thickness "
+ "quant-score "
+ "staff-position "
+ "thickness "
+
+ );
+
-Array<Offset>
-Tie::get_encompass_offset_arr () const
-{
- Array<Offset> offset_arr;
- offset_arr.push (Offset (dx_f_drul_[LEFT], dy_f_drul_[LEFT]));
- offset_arr.push (Offset (spanner_length () + dx_f_drul_[RIGHT],
- dy_f_drul_[RIGHT]));
-
- return offset_arr;
-}
projects / lilypond.git / blobdiff