/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) Statoil ASA
//  Copyright (C) Ceetron Solutions AS
//
//  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 "RivSingleCellPartGenerator.h"

#include "RigEclipseCaseData.h"
#include "RigFemPartCollection.h"
#include "RigGeoMechCaseData.h"
#include "RigGridBase.h"

#include "RimGeoMechCase.h"

#include "RivFemPartGeometryGenerator.h"
#include "RivPartPriority.h"

#include "cafEffectGenerator.h"
#include "cvfPart.h"
#include "cvfRenderStateDepth.h"
#include "cvfStructGridGeometryGenerator.h"

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RivSingleCellPartGenerator::RivSingleCellPartGenerator( RigEclipseCaseData* rigCaseData,
                                                        size_t              gridIndex,
                                                        size_t              cellIndex,
                                                        const cvf::Vec3d&   displayModelOffset )
    : m_rigCaseData( rigCaseData )
    , m_gridIndex( gridIndex )
    , m_cellIndex( cellIndex )
    , m_geoMechCase( nullptr )
    , m_displayModelOffset( displayModelOffset )
{
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RivSingleCellPartGenerator::RivSingleCellPartGenerator( RimGeoMechCase*   rimGeoMechCase,
                                                        size_t            gridIndex,
                                                        size_t            cellIndex,
                                                        const cvf::Vec3d& displayModelOffset )
    : m_geoMechCase( rimGeoMechCase )
    , m_gridIndex( gridIndex )
    , m_cellIndex( cellIndex )
    , m_rigCaseData( nullptr )
    , m_displayModelOffset( displayModelOffset )
{
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
cvf::ref<cvf::Part> RivSingleCellPartGenerator::createPart( const cvf::Color3f color )
{
    cvf::ref<cvf::Part> part = new cvf::Part;
    part->setName( cvf::String( "Hightlight part for cell index " ) + cvf::String( (cvf::int64)m_cellIndex ) );
    part->setDrawable( createMeshDrawable().p() );

    cvf::ref<cvf::Effect>    eff;
    caf::MeshEffectGenerator effGen( color );
    eff = effGen.generateUnCachedEffect();

    cvf::ref<cvf::RenderStateDepth> depth = new cvf::RenderStateDepth;
    depth->enableDepthTest( false );
    eff->setRenderState( depth.p() );

    part->setEffect( eff.p() );

    part->setPriority( RivPartPriority::PartType::Highlight );

    return part;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
cvf::ref<cvf::DrawableGeo> RivSingleCellPartGenerator::createMeshDrawable()
{
    if ( m_rigCaseData && m_cellIndex != cvf::UNDEFINED_SIZE_T )
    {
        return cvf::StructGridGeometryGenerator::createMeshDrawableFromSingleCell( m_rigCaseData->grid( m_gridIndex ),
                                                                                   m_cellIndex,
                                                                                   m_displayModelOffset );
    }
    else if ( m_geoMechCase && m_cellIndex != cvf::UNDEFINED_SIZE_T )
    {
        CVF_ASSERT( m_geoMechCase->geoMechData() );
        CVF_ASSERT( m_geoMechCase->geoMechData()->femParts()->partCount() > static_cast<int>( m_gridIndex ) );

        RigFemPart* femPart = m_geoMechCase->geoMechData()->femParts()->part( m_gridIndex );
        CVF_ASSERT( femPart );

        return RivFemPartGeometryGenerator::createMeshDrawableFromSingleElement( femPart, m_cellIndex, m_displayModelOffset );
    }

    return nullptr;
}