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accu/shape/volume.hh
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// Copyright (C) 2007, 2008, 2009 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 MLN_ACCU_SHAPE_VOLUME_HH
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# define MLN_ACCU_SHAPE_VOLUME_HH
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# include <mln/accu/internal/base.hh>
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# include <mln/core/concept/meta_accumulator.hh>
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# include <mln/math/diff_abs.hh>
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# include <mln/util/pix.hh>
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# include <mln/literal/zero.hh>
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namespace
mln
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{
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namespace
accu
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{
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namespace
shape
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{
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template
<
typename
I>
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struct
volume
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:
public
mln::accu::internal::base
< unsigned , volume<I> >
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{
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typedef
util::pix<I>
argument
;
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typedef
typename
argument::value
value
;
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volume
();
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void
init
();
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void
take
(
const
argument
&
pixel
);
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void
take
(
const
volume<I>
& other);
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void
set_value
(
unsigned
v);
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unsigned
to_result
()
const
;
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bool
is_valid
()
const
;
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protected
:
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value
ref_level__
;
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unsigned
area__
;
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unsigned
volume_
;
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};
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}
// end of mln::accu::shape
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namespace
meta
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{
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namespace
shape
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{
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struct
volume
:
public
Meta_Accumulator
< volume >
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{
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template
<
typename
I>
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struct
with
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{
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typedef
accu::shape::volume<I>
ret
;
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};
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};
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}
// end of namespace mln::accu::meta::shape
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}
// end of namespace mln::accu::meta
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# ifndef MLN_INCLUDE_ONLY
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namespace
shape
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{
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template
<
typename
I>
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inline
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volume<I>::volume
()
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{
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init();
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}
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template
<
typename
I>
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inline
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void
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volume<I>::init
()
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{
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ref_level__ =
literal::zero
;
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volume_ = 0;
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area__ = 0;
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}
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template
<
typename
I>
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inline
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void
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volume<I>::take
(
const
argument& pixel)
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{
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/* FIXME: Growing a component using this particular `take'
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routine won't work, since the update does not take care of
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the reference level to compute the new volume. Maybe we
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could distinguish two cases:
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1. the empty accumulator case (which corresponds to the
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following code);
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2. the non-empty accumulator case (which sohuld act as in
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`take(const volume<I>& other)').
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Currently, the implementation is only valid if the
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accumulator was initialy empty before the call to
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`take(const argument&)'. */
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ref_level__ = pixel.v();
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++area__;
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++volume_;
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}
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template
<
typename
I>
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inline
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void
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volume<I>::take
(
const
volume<I>& other)
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{
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area__ += other.area__;
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/* FIXME: Is it `t.area__' or `area__' ? Théo said it was
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the latter, but both the ISMM 2005 paper and Olena 0.11 use
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the former. */
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volume_ +=
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other.volume_ +
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other.area__ *
mln::math::diff_abs
(other.ref_level__, ref_level__);
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// Member ref_level__ is not touched.
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}
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template
<
typename
I>
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inline
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unsigned
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volume<I>::to_result
()
const
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{
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return
volume_;
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}
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template
<
typename
I>
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inline
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void
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volume<I>::set_value
(
unsigned
v)
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{
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volume_ = v;
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// Reset the other members.
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ref_level__ =
literal::zero
;
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area__ = 0;
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}
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template
<
typename
I>
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inline
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bool
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volume<I>::is_valid
()
const
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{
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return
true
;
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}
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}
// end of namespace mln::accu::shape
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# endif // ! MLN_INCLUDE_ONLY
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}
// end of namespace mln::accu
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}
// end of namespace mln
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#endif // ! MLN_ACCU_SHAPE_VOLUME_HH
mln
accu
shape
volume.hh
Copyright (C) 2012 EPITA Research and Development Laboratory (LRDE)