source file of the GNU LilyPond music typesetter
- (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "tie.hh"
-
-#include <cmath>
-using namespace std;
-
#include "spanner.hh"
#include "lookup.hh"
#include "output-def.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"
+
int
Tie::compare (Grob *const &s1,
Tie::set_head (Grob *me, Direction d, Grob *h)
{
dynamic_cast<Spanner *> (me)->set_bound (d, h);
- me->add_dependency (h);
}
Grob *
int
Tie::get_position (Grob *me)
{
- Direction d = head (me, LEFT) ? LEFT : RIGHT;
- return (int) Staff_symbol_referencer::get_position (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;
}
/*
return UP;
}
-void
-Tie::set_direction (Grob *me)
-{
- if (!get_grob_direction (me))
- {
- 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));
- }
-}
-
-Interval
-Tie::get_default_attachments (Spanner *me, Grob *common, Real gap,
- int *staff_position,
- bool *in_between
- )
-{
- Real staff_space = Staff_symbol_referencer::staff_space (me);
- Direction dir = get_grob_direction (me);
- Interval attachments;
- Direction d = LEFT;
- do
- {
- attachments[d]
- = robust_relative_extent (me->get_bound (d),
- common,
- X_AXIS)[-d]
- - gap * d;
- }
- while (flip (&d) != LEFT);
-
- 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);
-
- attachments[d] = extent.linear_combination (- 0.5 * d);
- *in_between = false;
- }
- }
- while (flip (&d) != LEFT);
- }
- }
- return attachments;
-}
-
-Interval
-get_skyline_attachment (Drul_array< Array < Skyline_entry > > const &skylines,
- Real y)
-{
- Interval attachments;
- Direction d = LEFT;
- do
- {
- attachments[d] = skyline_height (skylines[d], y, -d);
- }
- while (flip (&d) != LEFT);
-
- return attachments;
-}
-
-void
-Tie::get_configuration (Grob *me_grob, Grob *common,
- Tie_configuration *conf,
- Drul_array< Array < Skyline_entry > > const *skylines,
- Tie_details const &details
- )
+MAKE_SCHEME_CALLBACK(Tie, calc_direction, 1);
+SCM
+Tie::calc_direction (SCM smob)
{
- Spanner *me = dynamic_cast<Spanner*> (me_grob);
- if (!head (me, LEFT) && !head (me, RIGHT))
- {
- programming_error ("tie without heads");
- me->suicide ();
- return ;
- }
-
- /*
- UGH. Don't mirror Tie_configuration.
- */
- conf->head_position_ = (int) Tie::get_position (me);
- if (!conf->dir_)
- conf->dir_ = get_grob_direction (me);
- if (!conf->dir_)
- conf->dir_ = get_default_dir (me);
-
-
- Real staff_space = details.staff_space_;
- bool in_between = true;
- Real gap = robust_scm2double (me->get_property ("x-gap"), 0.2);
-
- if (conf->attachment_x_.is_empty())
- {
- if (!skylines)
- conf->attachment_x_ = get_default_attachments (me, common, gap,
- &conf->position_,
- &in_between);
- else
- {
- Real y = staff_space * 0.5 * conf->position_;
- conf->attachment_x_ = get_skyline_attachment (*skylines, y);
- conf->attachment_x_.widen (-gap);
- }
- }
-
- Bezier b = slur_shape (conf->attachment_x_.length(),
- details.height_limit_,
- details.ratio_);
- b.scale (1, conf->dir_);
-
- Offset middle = b.curve_point (0.5);
- Offset edge = b.curve_point (0.0);
-
- conf->position_ = int (rint (conf->position_));
-
- Real dy = fabs (middle[Y_AXIS] - edge[Y_AXIS]);
- bool in_space = !(Staff_symbol_referencer::on_staffline (me, (int) conf->position_));
- bool fits_in_space =
- (dy < 0.6 * staff_space);
-
- /*
- Avoid dot
- */
- Grob *left_dot = unsmob_grob (me->get_bound (LEFT)->get_object ("dot"));
- int dot_pos = left_dot
- ? int (Staff_symbol_referencer::get_position (left_dot))
- : 0;
- if (left_dot
- && (conf->position_ == dot_pos
- || conf->position_ + conf->dir_ == dot_pos))
- {
- conf->position_ += conf->dir_;
- in_space = !in_space;
-
- if (skylines)
- {
- Real y = staff_space * 0.5 * conf->position_;
- conf->attachment_x_ = get_skyline_attachment (*skylines, y);
- conf->attachment_x_.widen (-gap);
- Bezier b = slur_shape (conf->attachment_x_.length(),
- details.height_limit_,
- details.ratio_);
- Offset middle = b.curve_point (0.5);
- Offset edge = b.curve_point (0.0);
- dy = fabs (middle[Y_AXIS] - edge[Y_AXIS]);
- fits_in_space =
- (dy < 0.6 * staff_space);
- }
- }
-
- /*
- 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 = conf->position_ * staff_space * 0.5;
- if (flag.extent (Y_AXIS).contains (y))
- {
- conf->position_ += conf->dir_;
- in_space = !in_space;
- }
- }
-
- if (in_space != fits_in_space)
- {
- if (in_space)
- {
- conf->position_ += conf->dir_;
- }
- else
- {
- in_space = true;
- conf->position_ += conf->dir_;
- }
-
- /*
- ugh: code dup.
- */
- if (skylines)
- {
- Real y = staff_space * 0.5 * conf->position_;
- conf->attachment_x_ = get_skyline_attachment (*skylines, y);
- conf->attachment_x_.widen (-gap);
-
- Bezier b = slur_shape (conf->attachment_x_.length(),
- details.height_limit_,
- details.ratio_);
- Offset middle = b.curve_point (0.5);
- Offset edge = b.curve_point (0.0);
- dy = fabs (middle[Y_AXIS] - edge[Y_AXIS]);
- fits_in_space =
- (dy < 0.6 * staff_space);
- }
- }
-
-
- /*
- Putting larger in-space ties next to the notes forces
- the edges to be opposite (Y-wise) to the tie direction.
- */
- if (conf->position_ == conf->head_position_
- && in_space
- && Staff_symbol_referencer::staff_radius (me) > fabs (conf->position_) / 2
- && dy > 0.3 * staff_space)
- {
- conf->position_ += 2 * conf->dir_;
- }
-
- if (!in_between
- && in_space
- && fabs (conf->position_ - conf->head_position_) <= 1)
- conf->position_ += 2*conf->dir_;
-
-
- if (in_space)
+ 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)
{
- if ((fabs (conf->position_ - conf->head_position_) <= 1
- && fabs (dy) < 0.45 * staff_space)
- || fabs (dy) < 0.6 * staff_space)
- {
- /*
- vertically center in space.
- */
- conf->center_tie_vertically (details);
- }
- else
- {
- conf->delta_y_ =
- conf->dir_ * staff_space * (- 0.3);
- }
+ /* trigger positioning. */
+ (void) yparent->get_property ("positioning-done");
}
else
- {
- Real where = 0.5 * conf->dir_;
-
- Real rounding_dy = (where - middle[Y_AXIS]);
- conf->delta_y_ = rounding_dy;
-
- if (conf->dir_ * (b.curve_point (0.0)[Y_AXIS]
- + conf->position_ * staff_space * 0.5
- + conf->delta_y_) <
- conf->dir_ * conf->head_position_ * 0.5 * staff_space)
- {
- if (Staff_symbol_referencer::staff_radius (me) > fabs (conf->head_position_) / 2)
- conf->position_ += 2 * conf->dir_;
- else
- conf->position_ += conf->dir_;
- }
- }
-
+ set_grob_direction (me, Tie::get_default_dir (me));
- if (skylines)
- {
- Real half_space = 0.5 * staff_space;
- Real y = conf->position_ * half_space;
-
- conf->attachment_x_ = get_skyline_attachment (*skylines, y);
- conf->attachment_x_.widen (-gap);
- }
+ return SCM_UNSPECIFIED;
}
common = me->get_bound (LEFT)->common_refpoint (common, X_AXIS);
common = me->get_bound (RIGHT)->common_refpoint (common, X_AXIS);
- Tie_configuration conf;
- if (!get_grob_direction (me))
- set_grob_direction (me, get_default_dir (me));
-
- int tie_position = (int) Tie::get_position (me);
- conf.position_ = tie_position;
+ Tie_formatting_problem problem;
+ problem.from_tie (me);
- Tie_details details;
- details.init (me);
- get_configuration (me, common, &conf, 0, details);
- set_control_points (me, common, conf, details);
+ // 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_);
}
void
Tie_details const &details
)
{
- Bezier b = conf.get_bezier (details);
- b.scale (1, conf.dir_);
- b.translate (Offset (conf.attachment_x_[LEFT]
- - me->relative_coordinate (common, X_AXIS),
- 0.5 * conf.position_ * details.staff_space_
- + conf.delta_y_
- ));
-
+ Bezier b = conf.get_transformed_bezier (details);
+ b.translate (Offset (- me->relative_coordinate (common, X_AXIS), 0));
+
SCM controls = SCM_EOL;
for (int i = 4; i--;)
{
me->set_property ("control-points", controls);
}
-
-
-MAKE_SCHEME_CALLBACK (Tie, print, 1);
+MAKE_SCHEME_CALLBACK(Tie, calc_control_points, 1);
SCM
-Tie::print (SCM smob)
+Tie::calc_control_points (SCM smob)
{
Grob *me = unsmob_grob (smob);
- if (CENTER == get_grob_direction (me))
- set_direction (me);
+ // trigger Tie-column
+ (void) get_grob_direction (me);
- if (!get_grob_direction (me))
- me->programming_error ("Tie direction not set.");
-
- SCM cp = me->get_property ("control-points");
- if (!scm_is_pair (cp))
+ 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. dependency tracking!
- */
- if (Tie_column::has_interface (me->get_parent (Y_AXIS)))
- {
- Tie_column::set_directions (me->get_parent (Y_AXIS));
- }
-
- cp = me->get_property ("control-points");
+ /* trigger positioning. */
+ (void) yparent->get_property ("positioning-done");
}
-
- if (!scm_is_pair (cp))
+
+ if (!scm_is_pair (me->get_property ("control-points")))
{
set_default_control_points (me);
- cp = me->get_property ("control-points");
}
- if (!scm_is_pair (cp))
- return Stencil ().smobbed_copy ();
+ return SCM_UNSPECIFIED;
+}
+
+
+MAKE_SCHEME_CALLBACK (Tie, print, 1);
+SCM
+Tie::print (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+
+ SCM cp = me->get_property ("control-points");
Real staff_thick = Staff_symbol_referencer::line_thickness (me);
Real base_thick = robust_scm2double (me->get_property ("thickness"), 1);
ADD_INTERFACE (Tie,
"tie-interface",
- "A tie connecting two noteheads.\n",
+ "A tie connecting two noteheads. \n\n"
+ ,
+
/* properties */
+ "avoid-slur " // UGH.
"control-points "
"dash-fraction "
"dash-period "
"direction "
"thickness "
"x-gap ");
+
+
+
+
projects / lilypond.git / blobdiff