source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+
+#include "tie.hh"
+
#include <math.h>
+#include "spanner.hh"
#include "lookup.hh"
-#include "paper-def.hh"
-#include "tie.hh"
-#include "note-head.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"
+
+/*
+ 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 (Direction d, Item * head_l)
+Tie::set_head (Grob *me, Direction d, Grob *h)
{
- assert (!head (d));
- index_set_cell (get_elt_pointer ("heads"), d, head_l->self_scm_);
-
- set_bound (d, head_l);
- add_dependency (head_l);
+ dynamic_cast<Spanner *> (me)->set_bound (d, h);
+ me->add_dependency (h);
}
-Tie::Tie()
+Grob *
+Tie::head (Grob *me, Direction d)
{
- set_elt_pointer ("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;
-
+ Item *it = dynamic_cast<Spanner*> (me)->get_bound (d);
+ if (Note_head::has_interface (it))
+ return it;
+ else
+ return 0;
}
-Note_head*
-Tie::head (Direction d) const
+int
+Tie::get_column_rank (Grob *me, Direction d)
{
- SCM c = get_elt_pointer ("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 dynamic_cast<Note_head*> (unsmob_element (c));
+ Grob *col = dynamic_cast<Item *> (h)->get_column ();
+ return Paper_column::get_rank (col);
}
-Real
-Tie::position_f () const
+int
+Tie::get_position (Grob *me)
{
- return head (LEFT)
- ? staff_symbol_referencer (head (LEFT)).position_f ()
- : staff_symbol_referencer (head (RIGHT)).position_f () ;
+ Direction d = head (me, LEFT) ? LEFT : RIGHT;
+ return (int) Staff_symbol_referencer::get_position (head (me, d));
}
-
/*
- ugh: direction of the Tie is more complicated. See [Ross] p136 and further
- */
+ 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 () const
+Tie::get_default_dir (Grob *me)
{
- Stem * sl = head(LEFT) ? head (LEFT)->stem_l () :0;
- Stem * sr = head(RIGHT) ? head (RIGHT)->stem_l () :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 (get_grob_direction (sl) == UP
+ && get_grob_direction (sr) == UP)
+ return DOWN;
+ }
+ else if (sl || sr)
+ {
+ Item *s = sl ? sl : sr;
+ return -get_grob_direction (s);
+ }
- if (sl && directional_element (sl).get () == UP
- && sr && directional_element (sr).get () == UP)
- return DOWN;
- else
- return UP;
+ return UP;
}
void
-Tie::do_add_processing()
+Tie::set_direction (Grob *me)
{
- if (!(head (LEFT) && head (RIGHT)))
- warning (_ ("lonely tie"));
+ 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
+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;
- 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_pointer ("heads"), LEFT, new_head_drul[LEFT]->self_scm_ );
- index_set_cell (get_elt_pointer ("heads"), RIGHT, new_head_drul[RIGHT]->self_scm_ );
-}
+ 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::after_line_breaking ()
+Tie::get_configuration (Grob *me_grob, Grob *common,
+ Tie_configuration *conf,
+ Drul_array< Array < Skyline_entry > > const *skylines,
+ Tie_details const &details
+ )
{
- if (!head (LEFT) && !head (RIGHT))
+ Spanner *me = dynamic_cast<Spanner*> (me_grob);
+ if (!head (me, LEFT) && !head (me, RIGHT))
{
- programming_error ("Tie without heads.");
- set_elt_property ("transparent", SCM_BOOL_T);
- set_extent_callback (0, X_AXIS);
- set_extent_callback (0, Y_AXIS);
- return;
+ programming_error ("tie without heads");
+ me->suicide ();
+ return ;
}
- if (!directional_element (this).get ())
- directional_element (this).set (get_default_dir ());
+ Direction dir = CENTER;
- Real staff_space = staff_symbol_referencer (this).staff_space ();
- Real half_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");
+ int tie_position = (int) Tie::get_position (me);
+ int staff_position = (int) conf->position_;
- /*
- Slur and tie placement [OSU]
-
- Ties:
+ if (conf->dir_)
+ {
+ dir = conf->dir_;
+ }
+ else
+ {
+ dir = get_grob_direction (me);
+ if (!dir)
+ dir = get_default_dir (me);
+ }
- * x = inner vertical tangent - d * gap
+ Real staff_space = details.staff_space_;
- */
+ bool in_between = true;
+ Interval attachments = conf->attachment_x_;
+ Real gap = robust_scm2double (me->get_property ("x-gap"), 0.2);
+ if (attachments.is_empty())
+ {
+ if (!skylines)
+ attachments = get_default_attachments (me, common, gap,
+ &staff_position,
+ &in_between);
+ else
+ {
+ Real y = staff_space * 0.5 * staff_position;
+ attachments = get_skyline_attachment (*skylines, y);
+ attachments.widen (-gap);
+ }
+ }
+ Bezier b = slur_shape (attachments.length(),
+ details.height_limit_,
+ details.ratio_);
+ b.scale (1, dir);
+
+ Offset middle = b.curve_point (0.5);
+ Offset edge = b.curve_point (0.0);
+ staff_position = int (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);
+
/*
- OSU: not different for outer notes, so why all this code?
- ie, can we drop this, or should it be made switchable.
+ Avoid dot
*/
- 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;
-
- /*
- Slur and tie placement [OSU] -- check this
-
- Ties:
+ 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;
+ }
+ }
- * y = dx < 5ss: horizontal tangent
- y = dx >= 5ss: y next interline - d * 0.25 ss
+ /*
+ 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;
+ }
+ }
- which probably means that OSU assumes that
+ if (in_space != fits_in_space)
+ {
+ if (in_space)
+ {
+ staff_position += dir;
+ }
+ else
+ {
+ in_space = true;
+ staff_position += dir;
+ }
+ }
- dy <= 5 dx
- for smal slurs
+ /*
+ 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)
+ {
+ staff_position += 2 * dir;
+ }
-
- Real ypos = position_f ();
-
- Real y_f = half_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"))
+ if (!in_between
+ && in_space
+ && fabs (staff_position - tie_position) <= 1)
+ staff_position += 2*dir;
+
+
+ if (in_space)
{
- if (abs (ypos_i) % 2)
- y_f += dir * half_space;
- y_f += dir * y_gap_f;
+ if (fabs (dy) < 0.45 * staff_space)
+ {
+ /*
+ vertically center in space.
+ */
+ conf->attachment_x_ = attachments;
+ conf->center_tie_vertically(details);
+ }
+ else
+ {
+ conf->delta_y_ =
+ dir * staff_space * (- 0.3);
+ }
}
else
{
- if (! (abs (ypos_i) % 2))
- y_f += dir * half_space;
- y_f += dir * half_space;
- y_f -= dir * y_gap_f;
+ Real where = 0.5 * dir;
+
+ Real rounding_dy = (where - middle[Y_AXIS]);
+ conf->delta_y_ = rounding_dy;
+
+ if (dir * b.curve_point (0.0)[Y_AXIS] <
+ dir * tie_position * 0.5 * staff_space)
+ conf->delta_y_ += staff_space * dir;
}
-
- dy_f_drul_[LEFT] = dy_f_drul_[RIGHT] = y_f;
-}
+ conf->dir_ = dir;
+ conf->position_ = staff_position;
+ if (skylines)
+ {
+ Real y = staff_space * 0.5 * staff_position;
+ attachments = get_skyline_attachment (*skylines, y);
+ attachments.widen (-gap);
+ }
+ conf->attachment_x_ = attachments;
+}
-Array<Rod>
-Tie::get_rods () const
+
+void
+Tie::set_default_control_points (Grob *me_grob)
{
- Array<Rod> a;
- Rod r;
+ 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_configuration conf;
+ if (!get_grob_direction (me))
+ set_grob_direction (me, get_default_dir (me));
- r.item_l_drul_ [LEFT]=get_bound (LEFT);
- r.item_l_drul_ [RIGHT]=get_bound (RIGHT);
+ int tie_position = (int) Tie::get_position (me);
+ conf.position_ = tie_position;
- r.distance_f_ = paper_l ()->get_var ("tie_x_minimum");
- a.push (r);
- return a;
+ Tie_details details;
+ details.init (me);
+ get_configuration (me, common, &conf, 0, details);
+ set_control_points (me, common, conf, details);
}
-
-
-
-Molecule
-Tie::do_brew_molecule () const
+void
+Tie::set_control_points (Grob *me,
+ Grob *common,
+ Tie_configuration const &conf,
+ Tie_details const &details
+ )
{
- Real thick = paper_l ()->get_var ("tie_thickness");
- Bezier one = get_curve ();
-
- 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);
+ 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_
+ ));
- return a;
+ SCM controls = SCM_EOL;
+ for (int i = 4; i--;)
+ controls = scm_cons (ly_offset2scm (b.control_[i]), controls);
+
+ me->set_property ("control-points", controls);
}
-Bezier
-Tie::get_curve () const
+MAKE_SCHEME_CALLBACK (Tie, print, 1);
+SCM
+Tie::print (SCM smob)
{
- Direction d (directional_element (this).get ());
- Bezier_bow b (get_encompass_offset_arr (), d);
+ Grob *me = unsmob_grob (smob);
- Real staff_space = staff_symbol_referencer (this).staff_space ();
- Real h_inf = paper_l ()->get_var ("tie_height_limit_factor") * staff_space;
- Real r_0 = paper_l ()->get_var ("tie_ratio");
+ if (CENTER == get_grob_direction (me))
+ set_direction (me);
+
+ SCM cp = me->get_property ("control-points");
+ if (!scm_is_pair (cp))
+ {
+ set_default_control_points (me);
+ cp = me->get_property ("control-points");
+ }
- b.set_default_bezier (h_inf, r_0);
- Bezier c = b.get_bezier ();
+ if (!scm_is_pair (cp))
+ return Stencil ().smobbed_copy ();
- /* should do this for slurs as well. */
- Array<Real> horizontal (c.solve_derivative (Offset (1,0)));
+ 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;
- if (horizontal.size ())
+ Bezier b;
+ int i = 0;
+ for (SCM s = cp; s != SCM_EOL; s = scm_cdr (s))
{
- /*
- ugh. Doesnt work for non-horizontal curves.
- */
- Real y = c.curve_point (horizontal[0])[Y_AXIS];
-
- Real ry = rint (y/staff_space) * staff_space;
- Real diff = ry - y;
- Real newy = y;
- if (fabs (y) <= 2.0
- && fabs (diff) < paper_l ()->get_var ("tie_staffline_clearance"))
- {
- newy = ry - 0.5 * staff_space * sign (diff) ;
- }
-
- Real y0 = c.control_ [0][Y_AXIS];
- c.control_[2][Y_AXIS] =
- c.control_[1][Y_AXIS] =
- (c.control_[1][Y_AXIS] - y0) * ((newy - y0) / (y - y0)) + y0;
+ 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,
+ thick,
+ robust_scm2double (p, 1.0),
+ robust_scm2double (f, 0));
else
- programming_error ("Tie is nowhere horizontal");
- return c;
-}
+ a = Lookup::slur (b,
+ get_grob_direction (me) * staff_thick,
+ thick);
-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;
+ return a.smobbed_copy ();
}
-
+ADD_INTERFACE (Tie,
+ "tie-interface",
+
+ "A tie connecting two noteheads.\n",
+
+ "control-points "
+ "dash-fraction "
+ "dash-period "
+ "details "
+ "direction "
+ "thickness "
+ "x-gap ");
projects / lilypond.git / blobdiff