source file of the GNU LilyPond music typesetter
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include <math.h> // ceil.
+#include "beam.hh"
#include "debug.hh"
#include "rest-collision.hh"
#include "note-column.hh"
#include "note-head.hh"
#include "collision.hh"
#include "paper-def.hh"
-
-
-IMPLEMENT_IS_TYPE_B1(Rest_collision,Item);
+#include "rest.hh"
+#include "group-interface.hh"
+#include "staff-symbol-referencer.hh"
+#include "duration.hh"
void
-Rest_collision::add (Note_column *nc_l)
+Rest_collision::add_column (Note_column *nc_l)
{
add_dependency (nc_l);
+ Pointer_group_interface gi (this);
if (nc_l->rest_b ())
- rest_l_arr_.push (nc_l);
+ gi.name_ = "rests";
else
- ncol_l_arr_.push (nc_l);
+ gi.name_ = "notes";
+
+ gi.add_element (nc_l);
}
-void
-Rest_collision::do_post_processing()
+static Duration
+to_duration (int type, int dots)
{
- /*
- 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
- */
+ Duration d;
+ d.durlog_i_ = type;
+ d.dots_i_ = dots;
+ return d;
+}
- // 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;
+static Moment
+rhythmic_head2mom (Rhythmic_head* r)
+{
+ return to_duration (r->balltype_i (), r->dot_count ()).length_mom ();
+}
- int dir_i = rest_l_arr_[0]->dir_;
- int midpos = 4;
-#if 1
- // ugh
- int stem_length_i = 7 - 2;
- // ugh, Stem::stem_start vs Stem::stem_end
- int pos = (int)(stem_l->stem_end_f() - midpos) - dir_i * stem_length_i;
-#else // nogo: stem_start not set for rests?
- int pos = (stem_l->stem_begin_f() - midpos) + dir_i * 2;
-#endif
- rest_l_arr_[0]->translate_rests (pos);
+/*
+ ugh
+ */
+static Rhythmic_head*
+col2rhythmic_head (Note_column* c)
+{
+ SCM s = c->get_elt_pointer ("rests");
+ assert (gh_pair_p (s));
+ Score_element* e = unsmob_element (gh_car (s));
+ return dynamic_cast<Rhythmic_head*> (e);
}
void
-Rest_collision::do_pre_processing()
+Rest_collision::before_line_breaking ()
{
+ Link_array<Note_column> rest_l_arr =
+ Pointer_group_interface__extract_elements (this, (Note_column*) 0, "rests");
+ Link_array<Note_column> ncol_l_arr =
+ Pointer_group_interface__extract_elements (this, (Note_column*) 0, "notes");
+
+
/*
handle rest-rest and rest-note collisions
[todo]
- decide not to print rest if too crowded?
+ * decide not to print rest if too crowded?
+
+ * ignore rests under beams.
*/
// no rests to collide
- if (!rest_l_arr_.size())
+ if (!rest_l_arr.size())
return;
// no partners to collide with
- if (rest_l_arr_.size() + ncol_l_arr_.size () < 2)
+ if (rest_l_arr.size() + ncol_l_arr.size () < 2)
return;
// meisjes met meisjes
- if (!ncol_l_arr_.size())
+ if (!ncol_l_arr.size())
{
- int dy = rest_l_arr_.size() > 2 ? 6 : 4;
-
- rest_l_arr_[0]->translate_rests (rest_l_arr_[0]->dir_ *dy);
- // top is last element...
- rest_l_arr_.top()->translate_rests (rest_l_arr_.top ()->dir_* dy);
+ Moment m = rhythmic_head2mom (col2rhythmic_head (rest_l_arr[0]));
+ int i = 1;
+ for (; i < rest_l_arr.size (); i++)
+ {
+ Moment me = rhythmic_head2mom (col2rhythmic_head (rest_l_arr[i]));
+ if (me != m)
+ break;
+ }
+
+ /*
+ If all durations are the same, we'll check if there are more
+ rests than maximum-rest-count.
+ Otherwise (different durations), we'll try to display them all
+ (urg: all 3 of them, currently).
+ */
+ int display_count;
+ SCM s = get_elt_property ("maximum-rest-count");
+ if (i == rest_l_arr.size ()
+ && gh_number_p (s) && gh_scm2int (s) < rest_l_arr.size ())
+ {
+ display_count = gh_scm2int (s);
+ for (; i > display_count; i--)
+ col2rhythmic_head (rest_l_arr[i-1])
+ ->set_elt_property ("molecule-callback", SCM_BOOL_T);
+ }
+ else
+ display_count = rest_l_arr.size ();
+
+ /*
+ UGH. Should get dims from table. Should have minimum dist.
+ */
+ int dy = display_count > 2 ? 6 : 4;
+ if (display_count > 1)
+ {
+ rest_l_arr[0]->translate_rests (dy);
+ rest_l_arr[1]->translate_rests (-dy);
+ }
}
// meisjes met jongetjes
else
{
- // int dir_i = - ncol_l_arr_[0]->dir_;
- int dir_i = rest_l_arr_[0]->dir_;
- // hope it's 4: if it works->doco
- int midpos = 0;
-
- // 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++)
+ if (rest_l_arr.size () > 1)
{
- // 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;
+ 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 = rcol->rest_dim ();
+ if (restdim.empty_b ())
+ return;
+
+ // staff ref'd?
+ Real staff_space = paper_l()->get_var ("interline");
+
+ /* FIXME
+ staff_space = rcol->rest_l_arr[0]->staff_space ();
+ */
+ Real half_staff_space_f = staff_space/2;
+ Real minimum_dist = paper_l ()->get_var ("restcollision_minimum_dist")
+ * half_staff_space_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));
}
- rest_l_arr_[0]->translate_rests (dir_i * minpos);
- }
-}
-void
-Rest_collision::do_print() const
-{
-#ifndef NPRINT
- DOUT << "rests: " << rest_l_arr_.size() << ", ";
- DOUT << "cols: " << ncol_l_arr_.size();
-#endif
-}
+ Interval inter (notedim);
+ inter.intersect (restdim);
-void
-Rest_collision::do_substitute_dependency (Score_elem*o,Score_elem*n)
-{
- Item*o_l = o->item();
-
+ Real dist =
+ minimum_dist + dir * (notedim[dir] - restdim[-dir]) >? 0;
- if (o_l&&o_l->is_type_b (Note_column::static_name ()))
- {
- Note_column *n_l = n?(Note_column*)n->item():0;
- rest_l_arr_.substitute ((Note_column*)o_l, n_l);
- ncol_l_arr_.substitute ((Note_column*)o_l, n_l);
+
+ // FIXME
+ //int stafflines = 5; // rcol->rest_l_arr[0]->line_count;
+ int stafflines = Staff_symbol_referencer_interface (this).line_count ();
+ // hurg?
+ stafflines = stafflines != 0 ? stafflines : 5;
+
+ // 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);
}
}
-Rest_collision::Rest_collision()
+
+Rest_collision::Rest_collision(SCM s)
+ : Item (s)
{
- transparent_b_ = true;
- set_empty (true);
+ set_elt_pointer ("rests", SCM_EOL);
+ set_elt_pointer ("notes", SCM_EOL);
+ set_extent_callback (0, X_AXIS);
+ set_extent_callback (0, Y_AXIS);
}
+
projects / lilypond.git / blobdiff