DRRStage.h

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/*
 *  Copyright (C) 2010 - 2015 Leonid Kostrykin
 *
 *  Chair of Medical Engineering (mediTEC)
 *  RWTH Aachen University
 *  Pauwelsstr. 20
 *  52074 Aachen
 *  Germany
 *
 */

#ifndef DRRSTAGE_H_6014714286
#define DRRSTAGE_H_6014714286

#include <Carna/presets/VolumeRenderingStage.h>
#include <Carna/Carna.h>
#include <memory>

namespace Carna
{

namespace presets
{



// ----------------------------------------------------------------------------------
// DRRStage
// ----------------------------------------------------------------------------------

class CARNA_LIB DRRStage : public VolumeRenderingStage
{

    struct Details;
    const std::unique_ptr< Details > pimpl;

public:

    const static float      DEFAULT_WATER_ATTENUATION;  
    const static float      DEFAULT_BASE_INTENSITY;     
    const static base::HUV  DEFAULT_LOWER_THRESHOLD;    
    const static base::HUV  DEFAULT_UPPER_THRESHOLD;    
    const static float      DEFAULT_UPPER_MULTIPLIER;   
    const static bool       DEFAULT_RENDER_INVERSE;     

    const static unsigned int ROLE_HU_VOLUME = 0;
    
    DRRStage( unsigned int geometryType );

    virtual ~DRRStage();
    
    DRRStage* clone() const override;

    virtual void reshape( base::FrameRenderer& fr, unsigned int width, unsigned int height ) override;

    virtual void renderPass
        ( const base::math::Matrix4f& viewTransform
        , base::RenderTask& rt
        , const base::Viewport& vp ) override;

    float waterAttenuation() const;

    float baseIntensity() const;
    
    base::HUV lowerThreshold() const;
    
    base::HUV upperThreshold() const;
    
    float upperMultiplier() const;

    bool isRenderingInverse() const;
    
    void setWaterAttenuation( float muWater );
    
    void setBaseIntensity( float baseIntensity );
    
    void setLowerThreshold( base::HUV lower );
    
    void setUpperThreshold( base::HUV upper );
    
    void setUpperMultiplier( float multiplier );

    void setRenderingInverse( bool inverse );

protected:

    virtual unsigned int loadVideoResources() override;

    virtual void createVolumeSamplers( const std::function< void( unsigned int, base::Sampler* ) >& registerSampler ) override;

    virtual const base::ShaderProgram& acquireShader() override;

    virtual const std::string& uniformName( unsigned int role ) const override;

    virtual void configureShader() override;

    virtual void configureShader( const base::Renderable& ) override;

}; // DRRStage



}  // namespace Carna :: presets

}  // namespace Carna

#endif // DRRSTAGE_H_6014714286