(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 "stem.hh"
-#include "note-head.hh"
-#include "collision.hh"
+#include "rhythmic-head.hh"
#include "paper-def.hh"
#include "rest.hh"
#include "group-interface.hh"
+#include "staff-symbol-referencer.hh"
+#include "duration.hh"
-void
-Rest_collision::add_column (Note_column *nc_l)
+MAKE_SCHEME_CALLBACK(Rest_collision,force_shift_callback,2);
+SCM
+Rest_collision::force_shift_callback (SCM element_smob, SCM axis)
{
- add_dependency (nc_l);
- Group_interface gi (this);
- if (nc_l->rest_b ())
- gi.name_ = "rests";
- else
- gi.name_ = "notes";
+ Score_element *them = unsmob_element (element_smob);
+ Axis a = (Axis) gh_scm2int (axis);
+ assert (a == Y_AXIS);
+
+ Score_element * rc = unsmob_element (them->get_elt_property ("rest-collision"));
+
+ if (rc)
+ {
+ /*
+ Done: destruct pointers, so we do the shift only once.
+ */
+ SCM elts = rc->get_elt_property ("elements");
+ rc->set_elt_property ("elements", SCM_EOL);
+
+ do_shift (rc, elts);
+ }
- gi.add_element (nc_l);
+ return gh_double2scm (0.0);
}
void
-Rest_collision::do_pre_processing()
+Rest_collision::add_column (Score_element*me,Score_element *p)
+{
+ me->add_dependency (p);
+ Pointer_group_interface::add_element (me, "elements", p);
+
+ p->add_offset_callback (Rest_collision::force_shift_callback_proc, Y_AXIS);
+ p->set_elt_property ("rest-collision", me->self_scm ());
+}
+
+
+/*
+ Combination of dot-count and duration-log.
+ */
+static SCM
+head_characteristic (Score_element * col)
+{
+ Score_element * s = unsmob_element (col->get_elt_property ("rest"));
+
+ if (!s)
+ return SCM_BOOL_F;
+ else
+ return gh_cons (s->get_elt_property ("duration-log"),
+ gh_int2scm (Rhythmic_head::dot_count (s)));
+}
+
+/*
+ TODO: fixme, fucks up if called twice on the same set of rests.
+ */
+SCM
+Rest_collision::do_shift (Score_element *me, SCM elts)
{
- Link_array<Note_column> rest_l_arr =
- Group_interface__extract_elements (this, (Note_column*) 0, "rests");
- Link_array<Note_column> ncol_l_arr =
- Group_interface__extract_elements (this, (Note_column*) 0, "notes");
-
+ /*
+ ugh. -> score elt type
+ */
+ Link_array<Score_element> rests;
+ Link_array<Score_element> notes;
+
+ for (SCM s = elts; gh_pair_p (s); s = gh_cdr (s))
+ {
+ Score_element * e = unsmob_element (gh_car (s));
+ if (e && unsmob_element (e->get_elt_property ("rest")))
+ rests.push (e);
+ else
+ notes.push (e);
+ }
+
/*
handle rest-rest and rest-note collisions
*/
// no rests to collide
- if (!rest_l_arr.size())
- return;
+ if (!rests.size())
+ return SCM_UNSPECIFIED;
// no partners to collide with
- if (rest_l_arr.size() + ncol_l_arr.size () < 2)
- return;
+ if (rests.size() + notes.size () < 2)
+ return SCM_UNSPECIFIED;
// meisjes met meisjes
- if (!ncol_l_arr.size())
+ if (!notes.size())
{
+ SCM characteristic = head_characteristic (rests[0]);
+ int i = 1;
+ for (; i < rests.size (); i++)
+ {
+ if (!gh_equal_p (head_characteristic (rests[i]), characteristic))
+ break;
+ }
+
/*
- UGH. Should get dims from table. Should have minimum dist.
+ 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 dy = rest_l_arr.size() > 2 ? 6 : 4;
+ int display_count;
+ SCM s = me->get_elt_property ("maximum-rest-count");
+ if (i == rests.size ()
+ && gh_number_p (s) && gh_scm2int (s) < rests.size ())
+ {
+ display_count = gh_scm2int (s);
+ for (; i > display_count; i--)
+ {
+ Score_element* r = unsmob_element (rests[i-1]->get_elt_property ("rest"));
+ if (r)
+ r->suicide ();
+ rests[i-1]->suicide ();
+ }
+ }
+ else
+ display_count = rests.size ();
+
+ /*
+ Ugh. Should have minimum dist.
+
+ Ugh. What do we do if we have three different rests?
- rest_l_arr[0]->translate_rests (rest_l_arr[0]->dir () *dy);
- rest_l_arr.top()->translate_rests (rest_l_arr.top ()->dir ()* dy);
+ */
+ int dy = display_count > 2 ? 6 : 4; // FIXME Should get dims from table.
+ if (display_count > 1)
+ {
+ Direction d0 = Note_column::dir (rests[0]);
+ Direction d1 = Note_column::dir (rests[1]);
+
+ if (!d0 && !d1)
+ {
+ d0= UP;
+ d1 = DOWN;
+ }
+ else if (!d0)
+ d0 = - d1;
+ else if (!d1)
+ d1 = -d0;
+
+ Note_column::translate_rests (rests[0],d0 *dy);
+ Note_column::translate_rests (rests[1], d1 *dy);
+ }
}
// meisjes met jongetjes
else
{
- if (rest_l_arr.size () > 1)
+ if (rests.size () > 1)
{
warning (_("too many colliding rests"));
}
- if (ncol_l_arr.size () > 1)
+ if (notes.size () > 1)
{
warning (_("too many notes for rest collision"));
}
- Note_column * rcol = rest_l_arr[0];
+ Score_element * rcol = rests[0];
// try to be opposite of noteheads.
- Direction dir = - ncol_l_arr[0]->dir();
+ Direction dir = - Note_column::dir (notes[0]);
- Interval restdim = rcol->rest_dim ();
+ Interval restdim = Note_column::rest_dim (rcol);
if (restdim.empty_b ())
- return;
+ return SCM_UNSPECIFIED;
// staff ref'd?
- Real staff_space = paper_l()->get_var ("interline");
+ Real staff_space = 1.0;
/* FIXME
- staff_space = rcol->rest_l_arr[0]->staff_space ();
+ staff_space = rcol->rests[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;
+ Real minimum_dist = gh_scm2double (me->get_elt_property ("minimum-distance")) * staff_space;
/*
assumption: ref points are the same.
*/
Interval notedim;
- for (int i = 0; i < ncol_l_arr.size(); i++)
+ for (int i = 0; i < notes.size(); i++)
{
- notedim.unite (ncol_l_arr[i]->extent (Y_AXIS));
+ notedim.unite (notes[i]->extent (notes[i],Y_AXIS)); // refp?
}
Interval inter (notedim);
// FIXME
- int stafflines = 5; // rcol->rest_l_arr[0]->line_count;
-
+ //int stafflines = 5; // rcol->rests[0]->line_count;
+ int stafflines = Staff_symbol_referencer::line_count (me);
+ // hurg?
+ stafflines = stafflines != 0 ? stafflines : 5;
// move discretely by half spaces.
int discrete_dist = int (ceil (dist / (0.5 *staff_space)));
if (discrete_dist < stafflines+1)
discrete_dist = int (ceil (discrete_dist / 2.0)* 2.0);
- rcol->translate_rests (dir * discrete_dist);
+ Note_column::translate_rests (rcol,dir * discrete_dist);
}
+ return SCM_UNSPECIFIED;
}
-
-Rest_collision::Rest_collision()
+void
+Rest_collision::set_interface (Score_element*me)
{
- set_elt_property ("rests", SCM_EOL);
- set_elt_property ("notes", SCM_EOL);
- set_elt_property ("transparent", SCM_BOOL_T);
- set_empty (X_AXIS);
- set_empty (Y_AXIS);
+ me->set_extent_callback (SCM_EOL, X_AXIS);
+ me->set_extent_callback (SCM_EOL, Y_AXIS);
}
projects / lilypond.git / blobdiff