lily/rod.cc

   1 /*
   2   rod.cc -- implement Rod, Column_rod
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1998--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "rod.hh"
  10
  11 #include "paper-column.hh"
  12 #include "warn.hh"
  13 #include "dimensions.hh"
  14 #include "spaceable-grob.hh"
  15
  16 Rod::Rod ()
  17 {
  18   distance_ = 0.0;
  19   item_drul_[LEFT] = item_drul_[RIGHT] = 0;
  20 }
  21
  22 void
  23 Rod::columnize ()
  24 {
  25   if (!item_drul_[LEFT]
  26       || !item_drul_[RIGHT])
  27     return;
  28
  29   Direction d = LEFT;
  30   do
  31     {
  32       Paper_column *pc = item_drul_[d]->get_column ();
  33       distance_ += -d * item_drul_[d]->relative_coordinate (pc, X_AXIS);
  34       item_drul_[d] = pc;
  35     }
  36   while ((flip (&d)) != LEFT);
  37 }
  38
  39 void
  40 Rod::add_to_cols ()
  41 {
  42   columnize ();
  43   if (item_drul_[LEFT] != item_drul_[RIGHT]
  44       && item_drul_[LEFT] && item_drul_[RIGHT])
  45     Spaceable_grob::add_rod (item_drul_[LEFT],
  46                              item_drul_[RIGHT],
  47                              distance_);
  48 }
  49