/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 2011 Mike Solomon <mike@apollinemike.com>
+ Copyright (C) 2011--2015 Mike Solomon <mike@mikesolomon.org>
LilyPond is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "pure-from-neighbor-interface.hh"
#include "engraver.hh"
+#include "translator.icc"
+
class Pure_from_neighbor_engraver : public Engraver
{
- vector<Grob *> items_then_;
- vector<Grob *> items_now_;
- vector<Grob *> pures_then_;
- vector<Grob *> pures_now_;
+ vector<Grob *> pure_relevants_;
+ vector<Grob *> need_pure_heights_from_neighbors_;
public:
TRANSLATOR_DECLARATIONS (Pure_from_neighbor_engraver);
protected:
- DECLARE_ACKNOWLEDGER (pure_from_neighbor);
- DECLARE_ACKNOWLEDGER (item);
- void stop_translation_timestep ();
+ void acknowledge_pure_from_neighbor (Grob_info);
+ void acknowledge_item (Grob_info);
+ void finalize ();
};
-Pure_from_neighbor_engraver::Pure_from_neighbor_engraver ()
+Pure_from_neighbor_engraver::Pure_from_neighbor_engraver (Context *c)
+ : Engraver (c)
{
}
void
Pure_from_neighbor_engraver::acknowledge_item (Grob_info i)
{
- SCM pure_relevant_p = ly_lily_module_constant ("pure-relevant?");
- if (!Pure_from_neighbor_interface::has_interface (i.grob ())
- && to_boolean (scm_call_1 (pure_relevant_p, i.item ()->self_scm ())))
- items_now_.push_back (i.item ());
+ if (!has_interface<Pure_from_neighbor_interface> (i.item ()))
+ pure_relevants_.push_back (i.item ());
}
-// note that this can get out of hand if there are lots of vertical axis groups...
+bool
+in_same_column (Grob *g1, Grob *g2)
+{
+ return (g1->spanned_rank_interval ()[LEFT]
+ == g2->spanned_rank_interval ()[LEFT])
+ && (g1->spanned_rank_interval ()[RIGHT]
+ == g2->spanned_rank_interval ()[RIGHT])
+ && (g1->spanned_rank_interval ()[LEFT]
+ == g1->spanned_rank_interval ()[RIGHT]);
+}
void
Pure_from_neighbor_engraver::acknowledge_pure_from_neighbor (Grob_info i)
{
- pures_now_.push_back (i.item ());
+ need_pure_heights_from_neighbors_.push_back (i.item ());
}
void
-Pure_from_neighbor_engraver::stop_translation_timestep ()
+Pure_from_neighbor_engraver::finalize ()
{
- if (pures_now_.size ())
- {
- for (vsize i = 0; i < pures_now_.size (); i++)
- for (vsize j = 0; j < items_then_.size (); j++)
- Pointer_group_interface::add_grob (pures_now_[i], ly_symbol2scm ("elements"), items_then_[j]);
+ if (!need_pure_heights_from_neighbors_.size ())
+ return;
- for (vsize i = 0; i < pures_then_.size (); i++)
- for (vsize j = 0; j < items_now_.size (); j++)
- Pointer_group_interface::add_grob (pures_then_[i], ly_symbol2scm ("elements"), items_now_[j]);
+ vector_sort (need_pure_heights_from_neighbors_, Grob::less);
+ vector_sort (pure_relevants_, Grob::less);
- items_then_.clear ();
- items_then_.insert (items_then_.end (), items_now_.begin (), items_now_.end ());
- items_now_.clear ();
+ /*
+ first, clump need_pure_heights_from_neighbors into
+ vectors of grobs that have the same column.
+ */
- pures_then_.clear ();
- pures_then_.insert (pures_then_.end (), pures_now_.begin (), pures_now_.end ());
- pures_now_.clear ();
+ vsize l = 0;
+ vector<vector<Grob *> > need_pure_heights_from_neighbors;
+ do
+ {
+ vector<Grob *> temp;
+ temp.push_back (need_pure_heights_from_neighbors_[l]);
+ for (;
+ (l < need_pure_heights_from_neighbors_.size () - 1
+ && ((need_pure_heights_from_neighbors_[l]
+ ->spanned_rank_interval ()[LEFT])
+ == (need_pure_heights_from_neighbors_[l + 1]
+ ->spanned_rank_interval ()[LEFT])));
+ l++)
+ temp.push_back (need_pure_heights_from_neighbors_[l + 1]);
+ need_pure_heights_from_neighbors.push_back (temp);
+ l++;
}
+ while (l < need_pure_heights_from_neighbors_.size ());
+
+ /*
+ then, loop through the pure_relevants_ list, adding the items
+ to the elements of need_pure_heights_from_neighbors_ on either side.
+ */
+
+ int pos[2] = { -1, 0};
+ for (vsize i = 0; i < pure_relevants_.size (); i++)
+ {
+ while (pos[1] < (int) need_pure_heights_from_neighbors.size ()
+ && (pure_relevants_[i]->spanned_rank_interval ()[LEFT]
+ > (need_pure_heights_from_neighbors[pos[1]][0]
+ ->spanned_rank_interval ()[LEFT])))
+ {
+ pos[0] = pos[1];
+ pos[1]++;
+ }
+ for (int j = 0; j < 2; j++)
+ if (pos[j] >= 0 && pos[j]
+ < (int) need_pure_heights_from_neighbors.size ())
+ for (vsize k = 0;
+ k < need_pure_heights_from_neighbors[pos[j]].size ();
+ k++)
+ if (!in_same_column (need_pure_heights_from_neighbors[pos[j]][k],
+ pure_relevants_[i]))
+ Pointer_group_interface::add_grob
+ (need_pure_heights_from_neighbors[pos[j]][k],
+ ly_symbol2scm ("neighbors"),
+ pure_relevants_[i]);
+ }
+
+ need_pure_heights_from_neighbors_.clear ();
+ pure_relevants_.clear ();
}
-#include "translator.icc"
+void
+Pure_from_neighbor_engraver::boot ()
+{
+ ADD_ACKNOWLEDGER (Pure_from_neighbor_engraver, item);
+ ADD_ACKNOWLEDGER (Pure_from_neighbor_engraver, pure_from_neighbor);
+}
-ADD_ACKNOWLEDGER (Pure_from_neighbor_engraver, item);
-ADD_ACKNOWLEDGER (Pure_from_neighbor_engraver, pure_from_neighbor);
ADD_TRANSLATOR (Pure_from_neighbor_engraver,
/* doc */
"Coordinates items that get their pure heights from their neighbors.",
projects / lilypond.git / blobdiff