/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2020-     Equinor ASA
//
//  ResInsight is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  ResInsight 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 General Public License at <http://www.gnu.org/licenses/gpl.html>
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#include "RigFemPartResultCalculatorPrincipalStrain.h"

#include "RigFemPart.h"
#include "RigFemPartCollection.h"
#include "RigFemPartResultsCollection.h"
#include "RigFemResultAddress.h"
#include "RigFemScalarResultFrames.h"

#include "cafProgressInfo.h"

#include <QString>

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RigFemPartResultCalculatorPrincipalStrain::RigFemPartResultCalculatorPrincipalStrain( RigFemPartResultsCollection& collection )
    : RigFemPartResultCalculator( collection )
{
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RigFemPartResultCalculatorPrincipalStrain::~RigFemPartResultCalculatorPrincipalStrain()
{
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
bool RigFemPartResultCalculatorPrincipalStrain::isMatching( const RigFemResultAddress& resVarAddr ) const
{
    return ( ( resVarAddr.fieldName == "NE" ) && ( resVarAddr.componentName == "E1" || resVarAddr.componentName == "E2" ||
                                                   resVarAddr.componentName == "E3" ) );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RigFemScalarResultFrames* RigFemPartResultCalculatorPrincipalStrain::calculate( int                        partIndex,
                                                                                const RigFemResultAddress& resVarAddr )
{
    CVF_ASSERT( resVarAddr.componentName == "E1" || resVarAddr.componentName == "E2" || resVarAddr.componentName == "E3" );

    caf::ProgressInfo frameCountProgress( m_resultCollection->frameCount() * 7, "" );
    frameCountProgress.setProgressDescription(
        "Calculating " + QString::fromStdString( resVarAddr.fieldName + ": " + resVarAddr.componentName ) );
    frameCountProgress.setNextProgressIncrement( m_resultCollection->frameCount() );

    RigFemScalarResultFrames* s11Frames =
        m_resultCollection->findOrLoadScalarResult( partIndex,
                                                    RigFemResultAddress( resVarAddr.resultPosType,
                                                                         resVarAddr.fieldName,
                                                                         "E11" ) );
    frameCountProgress.incrementProgress();
    frameCountProgress.setNextProgressIncrement( m_resultCollection->frameCount() );
    RigFemScalarResultFrames* s22Frames =
        m_resultCollection->findOrLoadScalarResult( partIndex,
                                                    RigFemResultAddress( resVarAddr.resultPosType,
                                                                         resVarAddr.fieldName,
                                                                         "E22" ) );
    frameCountProgress.incrementProgress();
    frameCountProgress.setNextProgressIncrement( m_resultCollection->frameCount() );
    RigFemScalarResultFrames* s33Frames =
        m_resultCollection->findOrLoadScalarResult( partIndex,
                                                    RigFemResultAddress( resVarAddr.resultPosType,
                                                                         resVarAddr.fieldName,
                                                                         "E33" ) );
    frameCountProgress.incrementProgress();
    frameCountProgress.setNextProgressIncrement( m_resultCollection->frameCount() );
    RigFemScalarResultFrames* s12Frames =
        m_resultCollection->findOrLoadScalarResult( partIndex,
                                                    RigFemResultAddress( resVarAddr.resultPosType,
                                                                         resVarAddr.fieldName,
                                                                         "E12" ) );
    frameCountProgress.incrementProgress();
    frameCountProgress.setNextProgressIncrement( m_resultCollection->frameCount() );
    RigFemScalarResultFrames* s13Frames =
        m_resultCollection->findOrLoadScalarResult( partIndex,
                                                    RigFemResultAddress( resVarAddr.resultPosType,
                                                                         resVarAddr.fieldName,
                                                                         "E13" ) );
    frameCountProgress.incrementProgress();
    frameCountProgress.setNextProgressIncrement( m_resultCollection->frameCount() );
    RigFemScalarResultFrames* s23Frames =
        m_resultCollection->findOrLoadScalarResult( partIndex,
                                                    RigFemResultAddress( resVarAddr.resultPosType,
                                                                         resVarAddr.fieldName,
                                                                         "E23" ) );

    RigFemScalarResultFrames* s1Frames =
        m_resultCollection->createScalarResult( partIndex,
                                                RigFemResultAddress( resVarAddr.resultPosType, resVarAddr.fieldName, "E1" ) );
    RigFemScalarResultFrames* s2Frames =
        m_resultCollection->createScalarResult( partIndex,
                                                RigFemResultAddress( resVarAddr.resultPosType, resVarAddr.fieldName, "E2" ) );
    RigFemScalarResultFrames* s3Frames =
        m_resultCollection->createScalarResult( partIndex,
                                                RigFemResultAddress( resVarAddr.resultPosType, resVarAddr.fieldName, "E3" ) );

    frameCountProgress.incrementProgress();

    int frameCount = s11Frames->frameCount();
    for ( int fIdx = 0; fIdx < frameCount; ++fIdx )
    {
        const std::vector<float>& s11 = s11Frames->frameData( fIdx );
        const std::vector<float>& s22 = s22Frames->frameData( fIdx );
        const std::vector<float>& s33 = s33Frames->frameData( fIdx );
        const std::vector<float>& s12 = s12Frames->frameData( fIdx );
        const std::vector<float>& s13 = s13Frames->frameData( fIdx );
        const std::vector<float>& s23 = s23Frames->frameData( fIdx );

        std::vector<float>& s1 = s1Frames->frameData( fIdx );
        std::vector<float>& s2 = s2Frames->frameData( fIdx );
        std::vector<float>& s3 = s3Frames->frameData( fIdx );

        size_t valCount = s11.size();

        s1.resize( valCount );
        s2.resize( valCount );
        s3.resize( valCount );

#pragma omp parallel for
        for ( long vIdx = 0; vIdx < static_cast<long>( valCount ); ++vIdx )
        {
            caf::Ten3f T( s11[vIdx], s22[vIdx], s33[vIdx], s12[vIdx], s23[vIdx], s13[vIdx] );
            cvf::Vec3f principalDirs[3];
            cvf::Vec3f principals = T.calculatePrincipals( principalDirs );
            s1[vIdx]              = principals[0];
            s2[vIdx]              = principals[1];
            s3[vIdx]              = principals[2];
        }

        frameCountProgress.incrementProgress();
    }

    RigFemScalarResultFrames* requestedPrincipal = m_resultCollection->findOrLoadScalarResult( partIndex, resVarAddr );

    return requestedPrincipal;
}