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//                                               -*- C++ -*-
/**
 *  @file  LHS.hxx
 *  @brief LHS is an implementation of the hit or miss Monte Carlo simulation method
 *
 *  (C) Copyright 2005-2011 EDF-EADS-Phimeca
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License.
 *
 *  This library is distributed in the hope that it will be useful
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 *  @author: $LastChangedBy: schueller $
 *  @date:   $LastChangedDate: 2011-04-11 12:32:27 +0200 (Mon, 11 Apr 2011) $
 *  Id:      $Id: LHS.hxx 1866 2011-04-11 10:32:27Z schueller $
 */
#ifndef OPENTURNS_LHS_HXX
#define OPENTURNS_LHS_HXX

#include "Simulation.hxx"
#include "Collection.hxx"
#include "Distribution.hxx"
#include "Matrix.hxx"

namespace OpenTURNS
{

  namespace Uncertainty
  {

    namespace Algorithm
    {

      /**
       * @class LHS
       */

      class LHS: public Simulation
      {

        CLASSNAME;
      public:

        typedef Simulation::NumericalSample                 NumericalSample;
        typedef Simulation::InvalidArgumentException        InvalidArgumentException;
        typedef Base::Type::Collection<Model::Distribution> Marginals;
        typedef Base::Type::Matrix                          Matrix;

        /** Constructor with parameters */
        LHS(const Simulation::Event & event);


        /** Virtual constructor */
        virtual LHS * clone() const;

        /** Shuffle the cells. */
        void computeShuffle();

        /** Performs the actual computation. */
        void run();

        /** String converter */
        String __repr__() const;

      private:

        /** Compute the block sample */
        NumericalSample computeBlockSample(NumericalSample & realizedEventSample);

        /** Second antecedent dimension */
        UnsignedLong dimension_;

        /** Active block index */
        UnsignedLong blockIndex_;

        /** Cells shuffle */
        Matrix shuffle_;

        /** Marginal distributions */
        Marginals marginals_;

      } ; /* class LHS */

    } /* namespace Algorithm */
  } /* namespace Uncertainty */
} /* namespace OpenTURNS */

#endif /* OPENTURNS_LHS_HXX */