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include
fastjet
internal
TilingExtent.hh
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#ifndef __FASTJET_TILINGEXTENT_HH__
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#define __FASTJET_TILINGEXTENT_HH__
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#include "fastjet/ClusterSequence.hh"
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//FJSTARTHEADER
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// $Id: TilingExtent.hh 3433 2014-07-23 08:17:03Z salam $
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//
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// Copyright (c) 2005-2014, Matteo Cacciari, Gavin P. Salam and Gregory Soyez
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//
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//----------------------------------------------------------------------
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// This file is part of FastJet.
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//
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// FastJet is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// The algorithms that underlie FastJet have required considerable
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// development. They are described in the original FastJet paper,
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// hep-ph/0512210 and in the manual, arXiv:1111.6097. If you use
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// FastJet as part of work towards a scientific publication, please
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// quote the version you use and include a citation to the manual and
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// optionally also to hep-ph/0512210.
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//
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// FastJet 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
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// GNU 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 FastJet. If not, see <http://www.gnu.org/licenses/>.
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//----------------------------------------------------------------------
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//FJENDHEADER
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FASTJET_BEGIN_NAMESPACE
// defined in fastjet/internal/base.hh
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//----------------------------------------------------------------------
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/// class to perform a fast analysis of the appropriate rapidity range
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/// in which to perform tiling
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class
TilingExtent
{
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public
:
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/// constructor that takes a ClusterSequence in a state where the
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/// initial particles have been set up, but before clustering has
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/// started.
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TilingExtent
(
ClusterSequence
& cs);
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/// returns the suggested minimum rapidity for the tiling
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double
minrap
()
const
{
return
_minrap;}
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/// returns the suggested maximum rapidity for the tiling
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double
maxrap
()
const
{
return
_maxrap;}
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/// internally, the class bins the particle multiplicity versus
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/// rapidity, in bins of size 1 running roughly from minrap to maxrap
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/// (including overflows); this function returns the sum of squares
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/// of bin contents, which may be informative for deciding strategy
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/// choices.
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double
sum_of_binned_squared_multiplicity
()
const
{
return
_cumul2;}
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private
:
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double
_minrap, _maxrap, _cumul2;
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/// attempts to calculate a sensible rapidity extent for the tiling
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void
_determine_rapidity_extent(
const
std::vector<PseudoJet> & particles);
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};
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FASTJET_END_NAMESPACE
// defined in fastjet/internal/base.hh
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#endif // __FASTJET_TILINGEXTENT_HH__
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