source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-
+#include "beam.hh"
#include "debug.hh"
#include "rest-collision.hh"
-#include "rest-column.hh"
#include "note-column.hh"
#include "stem.hh"
#include "note-head.hh"
#include "collision.hh"
#include "paper-def.hh"
-
-
-IMPLEMENT_IS_TYPE_B1(Rest_collision,Item);
+#include "rest.hh"
void
-Rest_collision::add (Note_column *nc_l)
+Rest_collision::add_column (Note_column *nc_l)
{
add_dependency (nc_l);
- ncol_l_arr_.push (nc_l);
-}
-
-void
-Rest_collision::add (Rest_column *rc_l)
-{
- add_dependency (rc_l);
- rest_l_arr_.push (rc_l);
-}
-
-void
-Rest_collision::do_post_processing()
-{
- /*
- handle rest under beam (do_post: beams are calculated now)
-
- [todo]
- i-d like to have access to the beam itself,
- iso only the (half-initialised?) stem
-
- what about combination of collisions and rest under beam
- */
-
- // no rests to collide
- if (!rest_l_arr_.size())
- return;
- // can this happen?
- Stem* stem_l = rest_l_arr_[0]->stem_l_;
- if (!stem_l)
- return;
- // no beam
- if (!(stem_l->beams_left_i_ || stem_l->beams_right_i_))
- return;
-
- int dir_i = rest_l_arr_[0]->dir_i_;
- int midpos = 4;
-#if 1
- // ugh
- int stem_length_i = 7 - 2;
- // ugh, Stem::stem_start vs Stem::stem_end
- int pos = (stem_l->stem_end_f() - midpos) - dir_i * stem_length_i;
-#else // nogo: stem_start not set for rests?
- int pos = (stem_l->stem_start_f() - midpos) + dir_i * 2;
-#endif
- rest_l_arr_[0]->translate_heads (pos);
+ if (nc_l->rest_b ())
+ rest_l_arr_.push (nc_l);
+ else
+ ncol_l_arr_.push (nc_l);
}
void
Rest_collision::do_pre_processing()
{
/*
- handle rest-rest and rest-note collisions
+ handle rest-rest and rest-note collisions
- [todo]
- decide not to print rest if too crowded?
+ [todo]
+ * decide not to print rest if too crowded?
+
+ * ignore rests under beams.
*/
// no rests to collide
if (!rest_l_arr_.size())
- return;
+ return;
// no partners to collide with
if (rest_l_arr_.size() + ncol_l_arr_.size () < 2)
- return;
+ return;
// meisjes met meisjes
if (!ncol_l_arr_.size())
{
- int dy = rest_l_arr_.size() > 2 ? 6 : 4;
+ /*
+ UGH. Should get dims from table. Should have minimum dist.
+ */
+ int dy = rest_l_arr_.size() > 2 ? 6 : 4;
- rest_l_arr_[0]->translate_heads (rest_l_arr_[0]->dir_i_ *dy);
- // top is last element...
- rest_l_arr_.top()->translate_heads (rest_l_arr_.top ()->dir_i_* dy);
+ rest_l_arr_[0]->translate_rests (rest_l_arr_[0]->dir () *dy);
+ rest_l_arr_.top()->translate_rests (rest_l_arr_.top ()->dir ()* dy);
}
// meisjes met jongetjes
else
{
-#if 0 // breendet: rests go always under
- // geen gemug, trug op je rug
- int dir_i = -1;
- rest_l_arr_[0]->translate_heads (dir_i * 3);
-#else
- // int dir_i = - ncol_l_arr_[0]->dir_i_;
- int dir_i = rest_l_arr_[0]->dir_i_;
- // hope it's 4: if it works->doco
- int midpos = 4;
-
- // minimum move
- int minpos = 4;
-
- // quart rest height
- // UGH Should get dims from table!
- int size_i = 6;
-
- int sep_i = 3 + size_i / 2;
- for (int i = 0; i < ncol_l_arr_.size(); i++)
- {
- // how to know whether to sort?
- ncol_l_arr_[i]->sort();
- for ( int j = 0; j < ncol_l_arr_[i]->head_l_arr_.size(); j++)
- minpos = minpos >? dir_i *
- (ncol_l_arr_[i]->head_l_arr_[j]->position_i_ -midpos) + sep_i;
- }
- rest_l_arr_[0]->translate_heads (dir_i * minpos);
-#endif
+ if (rest_l_arr_.size () > 1)
+ {
+ warning (_("Too many colliding rests."));
+ }
+ if (ncol_l_arr_.size () > 1)
+ {
+ warning (_("Too many notes for rest collision."));
+ }
+ Note_column * rcol = rest_l_arr_[0];
+
+ // try to be opposite of noteheads.
+ Direction dir = - ncol_l_arr_[0]->dir();
+
+ Interval restdim;
+ for (int i=0; i < rcol->rest_l_arr_.size(); i++)
+ restdim.unite (rcol->rest_l_arr_[i]->extent (Y_AXIS));
+
+ if (restdim.empty_b ())
+ return;
+
+ // staff ref'd?
+ Real staff_space = rcol->rest_l_arr_[0]->staff_line_leading_f ();
+ Real internote_f = staff_space/2;
+ Real minimum_dist = paper_l ()->get_var ("restcollision_minimum_dist")
+ * internote_f;
+
+ /*
+ assumption: ref points are the same.
+ */
+ Interval notedim;
+ for (int i = 0; i < ncol_l_arr_.size(); i++)
+ {
+ notedim.unite (ncol_l_arr_[i]->extent (Y_AXIS));
+ }
+
+ Interval inter (notedim);
+ inter.intersect (restdim);
+
+ Real dist =
+ minimum_dist + dir * (notedim[dir] - restdim[-dir]) >? 0;
+
+
+ int stafflines = rcol->rest_l_arr_[0]->lines_i ();
+
+
+ // move discretely by half spaces.
+ int discrete_dist = int (ceil (dist / (0.5 *staff_space)));
+
+ // move by whole spaces inside the staff.
+ if (discrete_dist < stafflines+1)
+ discrete_dist = int (ceil (discrete_dist / 2.0)* 2.0);
+
+ rcol->translate_rests (dir * discrete_dist);
}
}
}
void
-Rest_collision::do_substitute_dependency (Score_elem*o,Score_elem*n)
+Rest_collision::do_substitute_element_pointer (Score_element*o,Score_element*n)
{
- Item*o_l = o->item();
- Item*n_l = n?n->item():0;
-
- rest_l_arr_.substitute ((Rest_column*)o_l,(Rest_column*)n_l);
- ncol_l_arr_.substitute ((Note_column*)o_l,(Note_column*)n_l);
+ if (Note_column *onl = dynamic_cast<Note_column *> (o))
+ {
+ Note_column *n_l = n?dynamic_cast<Note_column *> (n):0;
+ rest_l_arr_.substitute (onl, n_l);
+ ncol_l_arr_.substitute (onl, n_l);
+ }
}
Rest_collision::Rest_collision()
{
- transparent_b_ = true;
- empty_b_ = true;
+ set_elt_property (transparent_scm_sym, SCM_BOOL_T);
+ set_empty (true);
}
projects / lilypond.git / blobdiff