source file of the GNU LilyPond music typesetter
- (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "tie.hh"
-#include <math.h>
-
-#include "spanner.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 "rhythmic-head.hh"
-#include "bezier.hh"
#include "paper-column.hh"
-#include "warn.hh"
+#include "rhythmic-head.hh"
+#include "spanner.hh"
#include "staff-symbol-referencer.hh"
-#include "directional-element-interface.hh"
-#include "bezier.hh"
#include "stem.hh"
-#include "note-head.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"
-/*
- 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 (Grob *me, Direction d, Grob *h)
+bool
+Tie::less (Grob *const &s1,
+ Grob *const &s2)
{
- assert (!head (me, d));
- index_set_cell (me->get_property ("head-pair"), d, h->self_scm ());
-
- dynamic_cast<Spanner *> (me)->set_bound (d, h);
- me->add_dependency (h);
+ return Tie::get_position (s1) < Tie::get_position (s2);
}
void
-Tie::set_interface (Grob *me)
+Tie::set_head (Grob *me, Direction d, Grob *h)
{
- me->set_property ("head-pair", scm_cons (SCM_EOL, SCM_EOL));
+ dynamic_cast<Spanner *> (me)->set_bound (d, h);
}
Grob *
Tie::head (Grob *me, Direction d)
{
- SCM c = me->get_property ("head-pair");
-
- if (scm_is_pair (c))
- return unsmob_grob (index_get_cell (c, d));
+ 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;
+ }
+
+ Item *it = dynamic_cast<Spanner*> (me)->get_bound (d);
+ if (Note_head::has_interface (it))
+ return it;
else
return 0;
}
return Paper_column::get_rank (col);
}
-Real
+int
Tie::get_position (Grob *me)
{
- Direction d = head (me, LEFT) ? LEFT : RIGHT;
- return Staff_symbol_referencer::get_position (head (me, d));
+ Direction d = LEFT;
+ do
+ {
+ Grob *h = head (me, d);
+ if (h)
+ return (int) rint (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;
}
/*
Direction
Tie::get_default_dir (Grob *me)
{
- 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)
+ Drul_array<Grob*> stems;
+ Direction d = LEFT;
+ do
+ {
+ Grob *stem = head (me, d) ? Rhythmic_head::get_stem (head (me, d)) : 0;
+ if (stem)
+ stem = Stem::is_invisible (stem) ? 0 : stem;
+
+ stems[d] = stem;
+ }
+ while (flip (&d)!= LEFT);
+
+ if (stems[LEFT] && stems[RIGHT])
{
- if (get_grob_direction (sl) == UP
- && get_grob_direction (sr) == UP)
+ if (get_grob_direction (stems[LEFT]) == UP
+ && get_grob_direction (stems[RIGHT]) == UP)
return DOWN;
}
- else if (sl || sr)
+ else if (stems[LEFT] || stems[RIGHT])
{
- Item *s = sl ? sl : sr;
+ Grob *s = stems[LEFT] ? stems[LEFT] : stems[RIGHT];
return -get_grob_direction (s);
}
-
+ else if (int p = get_position (me))
+ return Direction (sign (p));
+
return UP;
}
-void
-Tie::set_direction (Grob *me)
+
+MAKE_SCHEME_CALLBACK(Tie, calc_direction, 1);
+SCM
+Tie::calc_direction (SCM smob)
{
- if (!get_grob_direction (me))
+ 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
+ )
{
- if (Tie_column::has_interface (me->get_parent (Y_AXIS)))
- Tie_column::set_directions (me->get_parent (Y_AXIS));
- else
- set_grob_direction (me, Tie::get_default_dir (me));
+ /* trigger positioning. */
+ (void) yparent->get_property ("positioning-done");
+
+ return me->get_property_data ("direction");
}
+ else
+ return scm_from_int (Tie::get_default_dir (me));
}
SCM
-Tie::get_control_points (SCM smob)
+Tie::get_default_control_points (Grob *me_grob)
{
- Spanner *me = unsmob_spanner (smob);
- if (!head (me, LEFT) && !head (me, RIGHT))
- {
- programming_error ("tie without heads");
- me->suicide ();
- return SCM_EOL;
- }
-
- set_direction (me);
- int tie_position = (int) Tie::get_position (me);
+ 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);
- Direction dir = get_grob_direction (me);
-
- Real staff_space = Staff_symbol_referencer::staff_space (me);
- Real staff_position = tie_position;
-
- Grob *common[NO_AXES];
- for (int a = X_AXIS; a < NO_AXES; a++)
- {
- Axis ax ((Axis) a);
- common[ax] = me->get_bound (LEFT)->common_refpoint (me, ax);
- common[ax] = me->get_bound (RIGHT)->common_refpoint (common[a], ax);
- }
-
- Interval attachments;
-
- Direction d = LEFT;
- Real gap = robust_scm2double (me->get_property ("x-gap"), 0.2);
- do
- {
- attachments[d]
- = robust_relative_extent (me->get_bound (d),
- common[X_AXIS],
- X_AXIS)[-d]
- - gap * d;
- }
- while (flip (&d) != LEFT);
-
- bool in_between = true;
- if (attachments.length () < 0.6 * staff_space)
- {
- /*
- Let short ties start over note heads, instead of between.
- */
- Drul_array<bool> allow (true, true);
-
- Direction d = LEFT;
- do {
- if (Note_head::has_interface (me->get_bound (d)))
- {
- Grob *stem = unsmob_grob (me->get_bound (d)->get_object ("stem"));
- if (get_grob_direction (stem) == dir
- && -d == dir)
- allow[d] = false;
- }
- } while (flip (&d) != LEFT);
-
- if (allow[LEFT] && allow[RIGHT])
- {
- staff_position += dir;
- do
- {
- if (Note_head::has_interface (me->get_bound (d)))
- {
- Interval extent
- = robust_relative_extent (me->get_bound (d),
- common[X_AXIS], X_AXIS);
-
- attachments[d] = extent.linear_combination (- 0.5 * d);
- in_between = false;
- }
- }
- while (flip (&d) != LEFT);
- }
- }
-
- SCM details = me->get_property ("details");
-
- SCM limit
- = scm_assq (ly_symbol2scm ("height-limit"), details);
-
- Real h_inf = robust_scm2double (scm_cdr (limit), 0.75) * staff_space;
- Real r_0 = robust_scm2double (scm_cdr (scm_assq (ly_symbol2scm ("ratio"), details)),
- .333);
-
- Bezier b = slur_shape (attachments.length(),
- h_inf, r_0);
- b.scale (1, dir);
+ Tie_formatting_problem problem;
+ problem.from_tie (me);
- Offset middle = b.curve_point (0.5);
- Offset edge = b.curve_point (0.0);
+ Tie_specification spec = problem.get_tie_specification (0);
+ if (!me->is_live ())
+ return SCM_EOL;
- staff_position = rint (staff_position);
- Real dy = fabs (middle[Y_AXIS] - edge[Y_AXIS]);
- bool in_space = !(Staff_symbol_referencer::on_staffline (me, (int) staff_position));
- bool fits_in_space =
- (dy < 0.6 * staff_space);
+ Ties_configuration conf
+ = problem.generate_optimal_configuration ();
- /*
- Avoid dot
- */
- Grob *left_dot = unsmob_grob (me->get_bound (LEFT)->get_object ("dot"));
- if (left_dot && in_space)
- {
- if (staff_position == Staff_symbol_referencer::get_position (left_dot))
- {
- staff_position += dir;
- in_space = false;
- }
- }
+ return get_control_points (me, problem.common_x_refpoint (),
+ conf[0], problem.details_);
+}
- /*
- Avoid flag.
- */
- Grob *left_stem = unsmob_grob (me->get_bound (LEFT)->get_object ("stem"));
- if (left_stem)
- {
- Stencil flag = Stem::get_translated_flag (left_stem);
- Real y = staff_position * staff_space * 0.5;
- if (flag.extent (Y_AXIS).contains (y))
- {
- staff_position += dir;
- in_space = !in_space;
- }
- }
+SCM
+Tie::get_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));
- /*
- Putting larger in-space ties next to the notes forces
- the edges to be opposite (Y-wise) to the tie direction.
- */
- if (staff_position == tie_position
- && in_space
- && dy > 0.3 * staff_space)
+ SCM controls = SCM_EOL;
+ for (int i = 4; i--;)
{
- staff_position += 2 * dir;
+ if (!b.control_[i].is_sane ())
+ programming_error ("Insane offset");
+ controls = scm_cons (ly_offset2scm (b.control_[i]), controls);
}
+ return controls;
+}
- if (in_space != fits_in_space)
- {
- if (in_space)
- {
- staff_position += dir;
- }
- else
- {
- in_space = true;
- staff_position += dir;
- }
- }
- if (!in_between
- && in_space
- && fabs (staff_position - tie_position) <= 1)
- staff_position += 2*dir;
-
-
- if (in_space)
+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
+ )
{
- if (fabs (dy) < 0.4 * staff_space)
- {
- /*
- vertically center in space.
- */
- Offset middle = b.curve_point (0.5);
- Offset edge = b.curve_point (0.0);
-
- Real center = (edge[Y_AXIS] + middle[Y_AXIS])/2.0;
- b.translate (Offset (0,
- staff_position * staff_space * 0.5
- - center));
- }
- else
- {
- b.translate (Offset (0,
- (staff_position - dir) * staff_space * 0.5
- + dir * 0.2 * staff_space));
- }
+ /* trigger positioning. */
+ (void) yparent->get_property ("positioning-done");
}
- else
+
+ SCM cp = me->get_property_data ("control-points");
+ if (!scm_is_pair (cp))
{
- Real where = 0.5 * dir;
-
- Real rounding_dy = (where - middle[Y_AXIS]);
- b.translate (Offset (0,
- 0.5 * staff_position * staff_space + rounding_dy));
-
- if (dir * b.curve_point (0.0)[Y_AXIS] <
- dir * tie_position * 0.5 * staff_space)
- b.translate (Offset (0, staff_space * dir));
+ cp = get_default_control_points (me);
}
-
- b.translate (Offset (attachments[LEFT]
- - me->relative_coordinate (common[X_AXIS], X_AXIS), 0));
-
- SCM controls = SCM_EOL;
- for (int i = 4; i--;)
- controls = scm_cons (ly_offset2scm (b.control_[i]), controls);
- return controls;
-}
-
+ return cp;
+}
+/*
+ TODO: merge with Slur::print.
+ */
MAKE_SCHEME_CALLBACK (Tie, print, 1);
SCM
Tie::print (SCM smob)
{
Grob *me = unsmob_grob (smob);
-
+
SCM cp = me->get_property ("control-points");
- if (!scm_is_pair (cp)) // list is more accurate
- {
- cp = get_control_points (smob);
- me->set_property ("control-points", cp);
- }
-
- if (!scm_is_pair (cp))
- return Stencil ().smobbed_copy ();
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;
+ 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);
Bezier b;
int i = 0;
- for (SCM s = cp; s != SCM_EOL; s = scm_cdr (s))
+ for (SCM s = cp; scm_is_pair (s); s = scm_cdr (s))
{
b.control_[i] = ly_scm2offset (scm_car (s));
i++;
SCM f = me->get_property ("dash-fraction");
if (scm_is_number (p) && scm_is_number (f))
a = Lookup::dashed_slur (b,
- thick,
+ line_thick,
robust_scm2double (p, 1.0),
robust_scm2double (f, 0));
else
a = Lookup::slur (b,
- get_grob_direction (me) * staff_thick,
- thick);
+ 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))
+ {
+ string str;
+ SCM properties = Font_interface::text_font_alist_chain (me);
+
+ 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);
+
+ /*
+ 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,
- "tie-interface",
- "A tie connecting two noteheads.\n",
+ "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 "
+
+ );
+
+
+
+
- "y-offset dash-period dash-fraction "
- "staffline-clearance control-points head-pair "
- "details thickness x-gap direction minimum-length");