2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1996--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
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.
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.
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/>.
23 Box::translate (Offset o)
25 for (Axis i = X_AXIS; i < NO_AXES; incr (i))
26 interval_a_[i] += o[i];
32 for (Axis i = X_AXIS; i < NO_AXES; incr (i))
33 interval_a_[i].unite (b[i]);
39 return interval_a_[X_AXIS].length ()
40 * interval_a_[Y_AXIS].length ();
50 interval_a_[X_AXIS].set_empty ();
51 interval_a_[Y_AXIS].set_empty ();
55 Box::is_empty () const
57 return is_empty (X_AXIS) && is_empty (Y_AXIS);
61 Box::is_empty (Axis a) const
65 return interval_a_[a][LEFT] == empty[LEFT]
66 && interval_a_[a][RIGHT] == empty[RIGHT];
69 Box::Box (Interval ix, Interval iy)
76 Box::operator [] (Axis a)
78 return interval_a_[a];
82 Box::operator [] (Axis a) const
84 return interval_a_[a];
90 interval_a_[X_AXIS] *= s;
91 interval_a_[Y_AXIS] *= s;
95 Box::add_point (Offset o)
97 interval_a_[X_AXIS].add_point (o[X_AXIS]);
98 interval_a_[Y_AXIS].add_point (o[Y_AXIS]);
104 return Offset (interval_a_[X_AXIS].center (),
105 interval_a_[Y_AXIS].center ());
109 Box::widen (Real x, Real y)
111 interval_a_[X_AXIS].widen (x);
112 interval_a_[Y_AXIS].widen (y);
116 Box::intersect (Box b)
118 interval_a_[X_AXIS].intersect (b[X_AXIS]);
119 interval_a_[Y_AXIS].intersect (b[Y_AXIS]);
127 printf ("X left %4.4f right %4.4f Y down %4.4f up %4.4f\n",
128 interval_a_[X_AXIS][LEFT], interval_a_[X_AXIS][RIGHT],
129 interval_a_[Y_AXIS][DOWN], interval_a_[Y_AXIS][UP]);
132 /****************************************************************/
134 #include "ly-smobs.icc"
136 IMPLEMENT_SIMPLE_SMOBS (Box);
137 IMPLEMENT_TYPE_P (Box, "ly:box?");
138 IMPLEMENT_DEFAULT_EQUAL_P (Box);
141 Box::mark_smob (SCM /* x */)
147 Box::print_smob (SCM /* x */, SCM p, scm_print_state *)
149 scm_puts ("#<Box>", p);