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/* *****************************************************************
    MESQUITE -- The Mesh Quality Improvement Toolkit

    Copyright 2004 Sandia Corporation and Argonne National
    Laboratory.  Under the terms of Contract DE-AC04-94AL85000
    with Sandia Corporation, the U.S. Government retains certain
    rights in this software.

    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, or (at your option) any later version.

    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
    (lgpl.txt) along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    [email protected], [email protected], [email protected],
    [email protected], [email protected], [email protected]

  ***************************************************************** */
// -*- Mode : c++; tab-width: 3; c-tab-always-indent: t; indent-tabs-mode: nil; c-basic-offset: 3
// -*-
//
//   SUMMARY:
//     USAGE:
//
// ORIG-DATE: 19-Feb-02 at 10:57:52
//  LAST-MOD: 23-Jul-03 at 18:09:51 by Thomas Leurent
//
//
// DESCRIPTION:
// ============
/*! \file main.cpp

describe main.cpp here

 */
// DESCRIP-END.
//
#include <iostream>
using std::cout;
using std::endl;
#include <cstdlib>

#include "Mesquite.hpp"
#include "MeshImpl.hpp"
#include "MsqError.hpp"
#include "Vector3D.hpp"
#include "InstructionQueue.hpp"
#include "PatchData.hpp"
#include "TerminationCriterion.hpp"
#include "QualityAssessor.hpp"

// algorythms
#include "IdealWeightInverseMeanRatio.hpp"
#include "ConditionNumberQualityMetric.hpp"
#include "LPtoPTemplate.hpp"
#include "LInfTemplate.hpp"
#include "FeasibleNewton.hpp"
#include "ConjugateGradient.hpp"
#include "TestUtil.hpp"
using namespace MBMesquite;

int main()
{
    MsqPrintError err( cout );
    MBMesquite::MeshImpl mesh;

    std::string file_name = TestDir + "unittest/mesquite/3D/vtk/tets/untangled/tire.vtk";
    mesh.read_vtk( file_name.c_str(), err );
    if( err ) return 1;

    // creates an intruction queue
    InstructionQueue queue1;

    // creates a mean ratio quality metric ...
    IdealWeightInverseMeanRatio mean( err );
    if( err ) return 1;

    LPtoPTemplate obj_func( &mean, 1, err );
    if( err ) return 1;<--- If condition 'err' is true, the function will return/exit

    // creates the optimization procedures
    //   ConjugateGradient* pass1 = new ConjugateGradient( obj_func, err );
    FeasibleNewton pass1( &obj_func );

    // perform optimization globally
    pass1.use_global_patch();
    if( err ) return 1;<--- Testing identical condition 'err'

    QualityAssessor mean_qa = QualityAssessor( &mean );

    //**************Set termination criterion****************

    // perform 1 pass of the outer loop (this line isn't essential as it is
    // the default behavior).
    TerminationCriterion tc_outer;
    tc_outer.add_iteration_limit( 1 );
    pass1.set_outer_termination_criterion( &tc_outer );

    // perform the inner loop until a certain objective function value is
    // reached.  The exact value needs to be determined (about 18095).
    // As a safety, also stop if the time exceeds 10 minutes (600 seconds).
    TerminationCriterion tc_inner;
    tc_inner.add_absolute_quality_improvement( 13975 );
    //  tc_inner.add_absolute_quality_improvement( 13964.93818 );
    tc_inner.add_cpu_time( 1800 );

    pass1.set_inner_termination_criterion( &tc_inner );

    // used for cg to get some info
    //  pass1->set_debugging_level(2);

    // adds 1 pass of pass1 to mesh_set1
    queue1.add_quality_assessor( &mean_qa, err );
    if( err ) return 1;
    queue1.set_master_quality_improver( &pass1, err );
    if( err ) return 1;
    queue1.add_quality_assessor( &mean_qa, err );
    if( err ) return 1;
    mesh.write_vtk( "original_mesh.vtk", err );
    if( err ) return 1;

    // launches optimization on mesh_set1
    queue1.run_instructions( &mesh, err );
    if( err ) return 1;

    mesh.write_vtk( "smoothed_mesh.vtk", err );
    if( err ) return 1;
    print_timing_diagnostics( cout );
    return 0;
}