source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include <math.h>
-
+#include "tie.hh"
#include "spanner.hh"
#include "lookup.hh"
-#include "paper-def.hh"
-#include "tie.hh"
+#include "output-def.hh"
#include "rhythmic-head.hh"
#include "bezier.hh"
#include "paper-column.hh"
-#include "debug.hh"
+#include "warn.hh"
#include "staff-symbol-referencer.hh"
#include "directional-element-interface.hh"
-#include "molecule.hh"
-#include "bezier-bow.hh"
+#include "bezier.hh"
#include "stem.hh"
#include "note-head.hh"
+#include "tie-column.hh"
+#include "grob-array.hh"
+#include "tie-formatting-problem.hh"
+#include "tie-configuration.hh"
-/*
- tie: Connect two noteheads.
-
- What if we have
-
- c4 ~ \clef bass ; c4 or
- c4 \staffchange c4
-
- do we have non-horizontal ties then?
- */
-
-
-void
-Tie::set_head (Score_element*me,Direction d, Item * head_l)
+int
+Tie::compare (Grob *const &s1,
+ Grob *const &s2)
{
- assert (!head (me,d));
- index_set_cell (me->get_elt_property ("heads"), d, head_l->self_scm ());
-
- dynamic_cast<Spanner*> (me)->set_bound (d, head_l);
- me->add_dependency (head_l);
+ return sign (Tie::get_position (s1) - Tie::get_position (s2));
}
void
-Tie::set_interface (Score_element*me)
+Tie::set_head (Grob *me, Direction d, Grob *h)
{
- me->set_elt_property ("heads", gh_cons (SCM_EOL, SCM_EOL));
- me->set_interface (ly_symbol2scm ("tie-interface"));
+ dynamic_cast<Spanner *> (me)->set_bound (d, h);
}
-bool
-Tie::has_interface (Score_element*me)
+Grob *
+Tie::head (Grob *me, Direction d)
{
- return me->has_interface (ly_symbol2scm ("tie-interface"));
+ Item *it = dynamic_cast<Spanner*> (me)->get_bound (d);
+ if (Note_head::has_interface (it))
+ return it;
+ else
+ return 0;
}
-Score_element*
-Tie::head (Score_element*me, Direction d)
+int
+Tie::get_column_rank (Grob *me, Direction d)
{
- SCM c = me->get_elt_property ("heads");
- c = index_cell (c, d);
+ Spanner *span = dynamic_cast<Spanner *> (me);
+ Grob *h = head (me, d);
+ if (!h)
+ h = span->get_bound (d);
- return unsmob_element (c);
+ Grob *col = dynamic_cast<Item *> (h)->get_column ();
+ return Paper_column::get_rank (col);
}
-Real
-Tie::position_f (Score_element*me)
+int
+Tie::get_position (Grob *me)
{
- Direction d = head (me,LEFT) ? LEFT:RIGHT;
- return Staff_symbol_referencer::position_f (head (me,d));
-}
+ Direction d = LEFT;
+ do
+ {
+ Grob *h = head (me, d);
+ if (h)
+ return (int) Staff_symbol_referencer::get_position (h);
+ }
+ while (flip (&d) != LEFT);
+
+ /*
+ 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;
+}
/*
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).
+
+ (what about linebreaks? )
*/
Direction
-Tie::get_default_dir (Score_element*me)
+Tie::get_default_dir (Grob *me)
{
- Item * sl = head(me,LEFT) ? Rhythmic_head::stem_l (head (me,LEFT)) :0;
- Item * sr = head(me,RIGHT) ? Rhythmic_head::stem_l (head (me,RIGHT)) :0;
-
+ Item *sl = head (me, LEFT) ? Rhythmic_head::get_stem (head (me, LEFT)) : 0;
+ Item *sr = head (me, RIGHT) ? Rhythmic_head::get_stem (head (me, RIGHT)) : 0;
if (sl && sr)
{
- if (Directional_element_interface::get (sl) == UP
- && Directional_element_interface::get (sr) == UP)
+ if (get_grob_direction (sl) == UP
+ && get_grob_direction (sr) == UP)
return DOWN;
}
else if (sl || sr)
{
Item *s = sl ? sl : sr;
- return - Directional_element_interface::get (s);
+ return -get_grob_direction (s);
}
-
return UP;
}
+MAKE_SCHEME_CALLBACK(Tie, calc_direction, 1);
SCM
-Tie::get_control_points (SCM smob)
-{
- Spanner*me = dynamic_cast<Spanner*> (unsmob_element (smob));
- Direction headdir = CENTER;
- if (head (me,LEFT))
- headdir = LEFT;
- else if (head(me,RIGHT))
- headdir = RIGHT;
- else
+Tie::calc_direction (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+ Grob *yparent = me->get_parent (Y_AXIS);
+ if (Tie_column::has_interface (yparent)
+ && unsmob_grob_array (yparent->get_object ("ties"))
+ && unsmob_grob_array (yparent->get_object ("ties"))->size () > 1)
{
- programming_error ("Tie without heads.");
- me->suicide ();
- return SCM_UNSPECIFIED;
+ /* trigger positioning. */
+ (void) yparent->get_property ("positioning-done");
}
-
- if (!Directional_element_interface::get (me))
- Directional_element_interface::set (me, Tie::get_default_dir (me));
-
- Real staff_space = Staff_symbol_referencer::staff_space (me);
-
- Real x_gap_f = gh_scm2double (me->get_elt_property ("x-gap"));
-
- Score_element* l = me->get_bound (LEFT);
- Score_element* r = me->get_bound (RIGHT);
-
- Score_element* commonx = me->common_refpoint (l, X_AXIS);
- commonx = me->common_refpoint (r, X_AXIS);
-
- Real left_x;
-
- /*
- this is a kludge: the tie has to be long enough to be
- visible, but should not go through key sigs.
-
- (please fixme)
- */
- Real lambda = 0.5;
-
- if (Note_head::has_interface (me->get_bound (LEFT)))
- left_x = l->extent (l, X_AXIS)[RIGHT] + x_gap_f;
else
- left_x = l->extent (l, X_AXIS).linear_combination (lambda);
-
+ set_grob_direction (me, Tie::get_default_dir (me));
- Real width;
- if (Note_head::has_interface (me->get_bound (LEFT))
- && Note_head::has_interface (me->get_bound (RIGHT)))
- {
- width =
- + r->extent (commonx,X_AXIS)[LEFT]
- - l->extent (commonx, X_AXIS)[RIGHT]
- -2 * x_gap_f;
- }
- else
- {
- if (Note_head::has_interface (me->get_bound (LEFT)))
- width = r->relative_coordinate (commonx, X_AXIS)
- - l->extent (commonx, X_AXIS)[RIGHT]
- - 2 * x_gap_f;
- else
- width =
- - l->extent (commonx, X_AXIS).linear_combination (lambda)
- + r->extent (commonx, X_AXIS)[LEFT]
- - 2 * x_gap_f;
- }
-
- Direction dir = Directional_element_interface::get(me);
+ return SCM_UNSPECIFIED;
+}
- SCM details = me->get_elt_property ("details");
- SCM lim // groetjes aan de chirurgendochter.
- = scm_assq (ly_symbol2scm ("height-limit"),details);
+void
+Tie::set_default_control_points (Grob *me_grob)
+{
+ 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);
- Real h_inf = gh_scm2double (gh_cdr (lim)) * staff_space;
- Real r_0 = gh_scm2double (gh_cdr (scm_assq (ly_symbol2scm ("ratio"),details)));
-
- Bezier b = slur_shape (width, h_inf, r_0);
+ Tie_formatting_problem problem;
+ problem.from_tie (me);
- Offset leave_dir = b.control_[1] - b.control_[0];
-
- Score_element *hed =head (me, headdir);
- Real dx = (hed->extent (hed, X_AXIS).length () + x_gap_f)/2.0;
- Real max_gap = leave_dir[Y_AXIS] * dx / leave_dir[X_AXIS];
-
- /*
- for small ties (t small) we want to start in the Y-center (so dy = 0), for
- large ties, the tie should appear to come from the center of the
- head, so dy = max_gap
-
- maybe use a different formula?
-
- TODO: what if 2 heads have different size.
-
- TODO: for small ties, it is better to start over the heads
- iso. next to the heads.
- */
- Real t = (width / staff_space - 5.0); // ugh.
- Real dy = t > 0 ? max_gap * sqr (t / (1 + t)) : 0.0;
-
- Real ypos = Tie::position_f (me) * staff_space/2 + dir * dy;
-
- /*
- todo: prevent ending / staffline collision.
+ // get_configuration (me, &conf, problem);
+ int tie_position = (int) Tie::get_position (me);
+ Tie_configuration conf
+ = problem.find_optimal_tie_configuration (tie_position, get_grob_direction (me));
+ set_control_points (me, problem.common_x_refpoint (),
+ conf, problem.details_);
+}
- todo: tie / stem collision
- */
+void
+Tie::set_control_points (Grob *me,
+ Grob *common,
+ Tie_configuration const &conf,
+ Tie_details const &details
+ )
+{
+ Bezier b = conf.get_transformed_bezier (details);
+ b.translate (Offset (- me->relative_coordinate (common, X_AXIS), 0));
- b = slur_shape(width,h_inf, r_0);
- b.scale (1, dir);
- b.translate (Offset (left_x, ypos));
-
+ 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);
+ }
+ me->set_property ("control-points", controls);
+}
- /*
- Avoid colliding of the horizontal part with stafflines.
+MAKE_SCHEME_CALLBACK(Tie, calc_control_points, 1);
+SCM
+Tie::calc_control_points (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
-
- TODO: redo this, heuristic is half-baken, and ties often look ugly
- as a result.
+ // trigger Tie-column
+ (void) get_grob_direction (me);
- TODO: doesn't work when on staff with even number of lines.
- */
- Array<Real> horizontal (b.solve_derivative (Offset (1,0)));
- if (horizontal.size ())
+ Grob *yparent = me->get_parent (Y_AXIS);
+ if (Tie_column::has_interface (yparent)
+ && unsmob_grob_array (yparent->get_object ("ties"))
+ && unsmob_grob_array (yparent->get_object ("ties"))->size () > 1)
{
- /*
- ugh. Doesnt work for non-horizontal curves.
- */
- Real y = b.curve_point (horizontal[0])[Y_AXIS];
-
- Real ry = rint (y/staff_space) * staff_space;
- Real diff = ry - y;
- Real newy = y;
-
- Real clear = staff_space * gh_scm2double (me->get_elt_property ("staffline-clearance"));
-
- if (fabs (y) <= Staff_symbol_referencer::staff_radius (me)
- && fabs (diff) < clear)
- {
- Real y1 = ry + clear;
- Real y2 = ry - clear;
-
- newy = (fabs (y1 - y) < fabs (y2 - y)) ? y1 : y2;
-
- // newy = ry - 0.5 * staff_space * sign (diff) ;
-
- /*
- we don't want horizontal ties
- */
- if (fabs (newy - b.control_[0][Y_AXIS]) < 1e-2)
- {
- newy = newy + dir * staff_space;
- }
- }
-
- Real y0 = b.control_ [0][Y_AXIS];
- b.control_[2][Y_AXIS] =
- b.control_[1][Y_AXIS] =
- (b.control_[1][Y_AXIS] - y0) * ((newy - y0) / (y - y0)) + y0;
+ /* trigger positioning. */
+ (void) yparent->get_property ("positioning-done");
}
- else
- programming_error ("Tie is nowhere horizontal");
-
+ if (!scm_is_pair (me->get_property ("control-points")))
+ {
+ set_default_control_points (me);
+ }
- SCM controls = SCM_EOL;
- for (int i= 4; i--;)
- controls = gh_cons ( ly_offset2scm (b.control_[i]), controls);
- return controls;
+ return SCM_UNSPECIFIED;
}
-MAKE_SCHEME_CALLBACK(Tie,set_spacing_rods,1);
-/*
- TODO: set minimum distances for begin/end of line
- */
+MAKE_SCHEME_CALLBACK (Tie, print, 1);
SCM
-Tie::set_spacing_rods (SCM smob)
+Tie::print (SCM smob)
{
- Score_element*me = unsmob_element (smob);
- Spanner*sp = dynamic_cast<Spanner*> (me);
- Rod r;
-
- r.item_l_drul_ [LEFT]=sp->get_bound (LEFT);
- r.item_l_drul_ [RIGHT]=sp->get_bound (RIGHT);
+ Grob *me = unsmob_grob (smob);
- r.distance_f_
- = gh_scm2double (me->get_elt_property ("minimum-length"))
- * 1.0;
- r.add_to_cols ();
- return SCM_UNSPECIFIED;
-}
-
-MAKE_SCHEME_CALLBACK(Tie,brew_molecule,1);
-SCM
-Tie::brew_molecule (SCM smob)
-{
- Score_element*me = unsmob_element (smob);
+ SCM cp = me->get_property ("control-points");
- SCM cp = me->get_elt_property ("control-points");
- if (cp == SCM_EOL)
- {
- cp = get_control_points (smob);
- me->set_elt_property ("control-points", cp);
- }
-
- Real thick =
- gh_scm2double (me->get_elt_property ("thickness"))
- * me->paper_l ()->get_var ("stafflinethickness");
+ Real staff_thick = Staff_symbol_referencer::line_thickness (me);
+ Real base_thick = robust_scm2double (me->get_property ("thickness"), 1);
+ Real thick = base_thick * staff_thick;
Bezier b;
int i = 0;
- for (SCM s= cp; s != SCM_EOL; s = gh_cdr (s))
+ for (SCM s = cp; s != SCM_EOL; s = scm_cdr (s))
{
- b.control_[i] = ly_scm2offset (gh_car (s));
+ b.control_[i] = ly_scm2offset (scm_car (s));
i++;
}
-
- Molecule a = Lookup::slur (b, Directional_element_interface::get (me) * thick, thick);
-
- return a.smobbed_copy ();
+
+ 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,
+ thick,
+ robust_scm2double (p, 1.0),
+ robust_scm2double (f, 0));
+ else
+ a = Lookup::slur (b,
+ get_grob_direction (me) * staff_thick,
+ thick);
+
+ return a.smobbed_copy ();
}
+ADD_INTERFACE (Tie,
+ "tie-interface",
+
+ "A tie connecting two noteheads. \n\n"
+ ,
+
+
+ /* properties */
+ "avoid-slur " // UGH.
+ "control-points "
+ "dash-fraction "
+ "dash-period "
+ "details "
+ "direction "
+ "thickness "
+ "x-gap ");
+
+
+
projects / lilypond.git / blobdiff