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User documentation 2.1
An Image Processing Platform
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box_intersection.hh
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// Copyright (C) 2011 EPITA Research and Development Laboratory (LRDE)
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//
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// This file is part of Olena.
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//
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// Olena is free software: you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation, version 2 of the License.
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//
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// Olena is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Olena. If not, see <http://www.gnu.org/licenses/>.
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//
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// As a special exception, you may use this file as part of a free
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// software project without restriction. Specifically, if other files
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// instantiate templates or use macros or inline functions from this
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// file, or you compile this file and link it with other files to produce
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// an executable, this file does not by itself cause the resulting
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// executable to be covered by the GNU General Public License. This
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// exception does not however invalidate any other reasons why the
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// executable file might be covered by the GNU General Public License.
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#ifndef SCRIBO_UTIL_BOX_INTERSECTION_HH
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# define SCRIBO_UTIL_BOX_INTERSECTION_HH
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#include <mln/core/site_set/box.hh>
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#include <mln/math/min.hh>
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#include <mln/math/max.hh>
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namespace
scribo
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{
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namespace
util
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{
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using namespace
mln;
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template
<
typename
P>
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box<P>
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box_intersection(
const
box<P>
& lhs,
const
box<P>
& rhs);
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# ifndef MLN_INCLUDE_ONLY
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template
<
typename
P>
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box<P>
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box_intersection(
const
box<P>
& lhs,
const
box<P>
& rhs)
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{
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mln_trace(
"scribo::util::box_intersection"
);
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P pmin, pmax;
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for
(
unsigned
dim = 0; dim < P::dim; ++dim)
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{
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pmin[dim] =
math::max
(lhs.
pmin
()[dim], rhs.
pmin
()[dim]);
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pmax[dim] =
math::min
(lhs.
pmax
()[dim], rhs.
pmax
()[dim]);
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if
(pmin[dim] > pmax[dim])
// No intersection.
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return
box<P>
();
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}
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box<P>
output(pmin, pmax);
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return
output;
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}
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# endif // ! MLN_INCLUDE_ONLY
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}
// end of namespace scribo::util
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}
// end of namespace scribo
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#endif // ! SCRIBO_UTIL_BOX_INTERSECTION_HH
scribo
scribo
util
box_intersection.hh
Copyright (C) 2012 EPITA Research and Development Laboratory (LRDE)