/////////////////////////////////////////////////////////////////////////////////
//
//  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.
//
/////////////////////////////////////////////////////////////////////////////////

#pragma once

#include "cafEffectGenerator.h"

class RivTernaryScalarMapper;

namespace cvf
{
class TextureImage;
}

//==================================================================================================
//
// ScalarMapperEffectGenerator
//
//==================================================================================================
class RivTernaryScalarMapperEffectGenerator : public caf::EffectGenerator
{
public:
    RivTernaryScalarMapperEffectGenerator( const RivTernaryScalarMapper* scalarMapper, caf::PolygonOffset polygonOffset );

    void setOpacityLevel( float opacity );
    void setUndefinedColor( cvf::Color3f color );
    void setFaceCulling( caf::FaceCulling faceCulling );
    void enableDepthWrite( bool enableWrite );
    void disableLighting( bool disable );

public:
    static bool isImagesEqual( const cvf::TextureImage* texImg1, const cvf::TextureImage* texImg2 );

protected:
    bool                  isEqual( const caf::EffectGenerator* other ) const override;
    caf::EffectGenerator* copy() const override;

    void updateForShaderBasedRendering( cvf::Effect* effect ) const override;
    void updateForFixedFunctionRendering( cvf::Effect* effect ) const override;

private:
    void updateCommonEffect( cvf::Effect* effect ) const;

private:
    cvf::cref<RivTernaryScalarMapper>   m_scalarMapper;
    mutable cvf::ref<cvf::TextureImage> m_textureImage;
    caf::PolygonOffset                  m_polygonOffset;
    float                               m_opacityLevel;
    cvf::Color3f                        m_undefinedColor;
    caf::FaceCulling                    m_faceCulling;
    bool                                m_enableDepthWrite;
    bool                                m_disableLighting;
};