DVRStage.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 DVRSTAGE_H_6014714286
#define DVRSTAGE_H_6014714286

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

namespace Carna
{

namespace presets
{



// ----------------------------------------------------------------------------------
// DVRStage
// ----------------------------------------------------------------------------------

class CARNA_LIB DVRStage : public VolumeRenderingStage
{

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

public:

    const static unsigned int ROLE_INTENSITIES = 0;
    
    const static unsigned int ROLE_NORMALS = 1;
    
    const static float DEFAULT_TRANSLUCENCE;
    
    const static float DEFAULT_DIFFUSE_LIGHT;
    
    explicit DVRStage( unsigned int geometryType, unsigned int colorMapResolution = ( 1 << 12 ) );

    virtual ~DVRStage();
    
    DVRStage* 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;

    void clearColorMap();
    
    void writeColorMap( const base::math::Span< float >& intensityRange, const base::math::Span< base::Color > colorRange );
    
    void writeColorMap( float intensityFirst, float intensityLast, const base::Color& colorFirst, const base::Color& colorLast );
    
    void setTranslucence( float translucence );
    
    float translucence() const;
    
    void setDiffuseLight( float diffuseLight );
    
    float diffuseLight() const;
    
    bool isLightingUsed() const;

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;

}; // DVRStage



}  // namespace Carna :: presets

}  // namespace Carna

#endif // DVRSTAGE_H_6014714286