lily/rod.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1998--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "rod.hh"
  21
  22 #include "paper-column.hh"
  23 #include "warn.hh"
  24 #include "dimensions.hh"
  25 #include "spaceable-grob.hh"
  26
  27 Rod::Rod ()
  28 {
  29   distance_ = 0.0;
  30   item_drul_[LEFT] = item_drul_[RIGHT] = 0;
  31 }
  32
  33 void
  34 Rod::columnize ()
  35 {
  36   if (!item_drul_[LEFT]
  37       || !item_drul_[RIGHT])
  38     return;
  39
  40   Direction d = LEFT;
  41   do
  42     {
  43       Paper_column *pc = item_drul_[d]->get_column ();
  44       distance_ += -d * item_drul_[d]->relative_coordinate (pc, X_AXIS);
  45       item_drul_[d] = pc;
  46     }
  47   while ((flip (&d)) != LEFT);
  48 }
  49
  50 void
  51 Rod::add_to_cols ()
  52 {
  53   columnize ();
  54   if (item_drul_[LEFT] != item_drul_[RIGHT]
  55       && item_drul_[LEFT] && item_drul_[RIGHT])
  56     Spaceable_grob::add_rod (item_drul_[LEFT],
  57                              item_drul_[RIGHT],
  58                              distance_);
  59 }
  60