lily/box.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1996--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 "box.hh"
  21
  22 void
  23 Box::translate (Offset o)
  24 {
  25   for (Axis i = X_AXIS; i < NO_AXES; incr (i))
  26     interval_a_[i] += o[i];
  27 }
  28
  29 void
  30 Box::unite (Box b)
  31 {
  32   for (Axis i = X_AXIS; i < NO_AXES; incr (i))
  33     interval_a_[i].unite (b[i]);
  34 }
  35
  36 Box::Box ()
  37 {
  38 }
  39
  40 void
  41 Box::set_empty ()
  42 {
  43   interval_a_[X_AXIS].set_empty ();
  44   interval_a_[Y_AXIS].set_empty ();
  45 }
  46
  47 Box::Box (Interval ix, Interval iy)
  48 {
  49   x () = ix;
  50   y () = iy;
  51 }
  52
  53 Interval &
  54 Box::operator [] (Axis a)
  55 {
  56   return interval_a_[a];
  57 }
  58
  59 Interval
  60 Box::operator [] (Axis a) const
  61 {
  62   return interval_a_[a];
  63 }
  64
  65 void
  66 Box::scale (Real s)
  67 {
  68   interval_a_[X_AXIS] *= s;
  69   interval_a_[Y_AXIS] *= s;
  70 }
  71
  72 void
  73 Box::add_point (Offset o)
  74 {
  75   interval_a_[X_AXIS].add_point (o[X_AXIS]);
  76   interval_a_[Y_AXIS].add_point (o[Y_AXIS]);
  77 }
  78
  79 Offset
  80 Box::center () const
  81 {
  82   return Offset (interval_a_[X_AXIS].center (),
  83                  interval_a_[Y_AXIS].center ());
  84 }
  85
  86 void
  87 Box::widen (Real x, Real y)
  88 {
  89   interval_a_[X_AXIS].widen (x);
  90   interval_a_[Y_AXIS].widen (y);
  91 }
  92
  93 /****************************************************************/
  94
  95 #include "ly-smobs.icc"
  96
  97 IMPLEMENT_SIMPLE_SMOBS (Box);
  98 IMPLEMENT_TYPE_P (Box, "ly:box?");
  99 IMPLEMENT_DEFAULT_EQUAL_P (Box);
 100
 101 SCM
 102 Box::mark_smob (SCM /* x */)
 103 {
 104   return SCM_EOL;
 105 }
 106
 107 int
 108 Box::print_smob (SCM /* x */, SCM p, scm_print_state*)
 109 {
 110   scm_puts ("#<Box>", p);
 111   return 1;
 112 }