source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include <math.h>
+#include "lookup.hh"
#include "paper-def.hh"
#include "tie.hh"
#include "note-head.hh"
-#include "p-col.hh"
-
+#include "bezier.hh"
+#include "paper-column.hh"
+#include "debug.hh"
+#include "staff-symbol-referencer.hh"
+#include "directional-element-interface.hh"
+#include "molecule.hh"
+#include "bezier-bow.hh"
+#include "stem.hh"
void
-Tie::set_head(int x_pos, Note_head * head_l)
+Tie::set_head (Direction d, Item * head_l)
{
- if (x_pos >0) {
- assert(!right_head_l_);
- right_head_l_ = head_l;
- } else {
- assert(!left_head_l_);
- left_head_l_ = head_l;
- }
- add_dependency(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()
{
- right_head_l_ =0;
- left_head_l_ =0;
- same_pitch_b_ =false;
+ 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;
+
}
-void
-Tie::set_default_dir()
+Note_head*
+Tie::head (Direction d) const
{
- int m= (left_head_l_->position_i_ + right_head_l_->position_i_) /2 ;
- dir_i_ = (m < 5)? -1:1; // ugh
+ SCM c = get_elt_property ("heads");
+ c = index_cell (c, d);
+
+ return dynamic_cast<Note_head*> (unsmob_element (c));
+}
+
+
+/*
+ ugh: direction of the Tie is more complicated. See [Ross] p136 and further
+ */
+Direction
+Tie::get_default_dir () const
+{
+ 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;
}
-
void
Tie::do_add_processing()
{
- assert(left_head_l_ && right_head_l_);
- left_col_l_ = left_head_l_ -> pcol_l_;
- right_col_l_ = right_head_l_ -> pcol_l_;
+ 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_ );
+
}
-/**
- This is already getting hairy. Should use Note_head *heads[2]
- */
void
Tie::do_post_processing()
{
- assert(left_head_l_ || right_head_l_);
- left_pos_i_ = (left_head_l_)?
- left_head_l_->position_i_ : right_head_l_->position_i_;
- right_pos_i_ = (right_head_l_) ?
- right_head_l_->position_i_ : left_head_l_->position_i_;
+ if (!head (LEFT) && !head (RIGHT))
+ {
+ programming_error ("Tie without heads.");
+ set_elt_property ("transparent", SCM_BOOL_T);
+ set_empty (X_AXIS);
+ set_empty (Y_AXIS);
+ return;
+ }
+
+ 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:
+
+ * x = inner vertical tangent - d * gap
+
+ */
+
+
+ /*
+ OSU: not different for outer notes, so why all this code?
+ ie, can we drop this, or should it be made switchable.
+ */
+ 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:
+
+ * 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
+
+ for smal slurs
+ */
+
+
+ Real ypos = head (LEFT)
+ ? staff_symbol_referencer (head (LEFT)).position_f ()
+ : staff_symbol_referencer (head (RIGHT)).position_f () ;
+
+ Real y_f = half_staff_space * ypos;
+ int ypos_i = int (ypos);
- if ( right_head_l_ && right_head_l_->extremal_i_) {
- right_pos_i_ += 2*dir_i_;
- right_dx_f_ -= 0.25;
- } else
- right_dx_f_ -= 0.5;
-
- if (left_head_l_ && left_head_l_->extremal_i_) {
- left_pos_i_ += 2*dir_i_;
- left_dx_f_ += 0.25;
- } else
- left_dx_f_ += 0.5;
-
- if (!right_head_l_)
- right_pos_i_ = left_pos_i_;
- if (! left_head_l_)
- left_pos_i_ = right_pos_i_;
+ 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 (abs (ypos_i) % 2)
+ y_f += dir * half_staff_space;
+ y_f += dir * y_gap_f;
+ }
+ else
+ {
+ if (! (abs (ypos_i) % 2))
+ y_f += dir * half_staff_space;
+ y_f += dir * half_staff_space;
+ y_f -= dir * y_gap_f;
+ }
+
+ dy_f_drul_[LEFT] = dy_f_drul_[RIGHT] = y_f;
}
-void
-Tie::do_substitute_dependency(Score_elem*o, Score_elem*n)
+Array<Rod>
+Tie::get_rods () const
+{
+ 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;
+}
+
+
+
+
+Molecule*
+Tie::do_brew_molecule_p () const
+{
+ 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);
+
+ return new Molecule (a);
+}
+
+
+
+Bezier
+Tie::get_curve () const
+{
+ Direction d (directional_element (this).get ());
+ Bezier_bow b (get_encompass_offset_arr (), d);
+
+ 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");
+
+ b.calculate ();
+ Bezier c (b.get_curve ());
+
+ /* should do this for slurs as well. */
+ Array<Real> horizontal (c.solve_derivative (Offset (1,0)));
+
+ if (horizontal.size ())
+ {
+ /*
+ ugh. Doesnt work for non-horizontal curves.
+ */
+ Real space = staff_symbol_referencer (this).staff_space ();
+ Real y = c.curve_point (horizontal[0])[Y_AXIS];
+
+ Real ry = rint (y/space) * space;
+ Real diff = ry - y;
+ Real newy = y;
+ if (fabs (diff) < paper_l ()->get_var ("tie_staffline_clearance"))
+ {
+ newy = ry - 0.5 * 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 / y) + y0;
+ }
+ else
+ programming_error ("Tie is nowhere horizontal");
+ return c;
+}
+
+
+Array<Offset>
+Tie::get_encompass_offset_arr () const
{
- Note_head *new_l =n?(Note_head*)n->item():0;
- if (o->item() == left_head_l_)
- left_head_l_ = new_l;
- else if (o->item() == right_head_l_)
- right_head_l_ = new_l;
+ 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;
}
-IMPLEMENT_STATIC_NAME(Tie);
projects / lilypond.git / blobdiff