RenderStageSequence.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 RENDERSTAGESEQUENCE_H_0874895466
#define RENDERSTAGESEQUENCE_H_0874895466
 
#include <Carna/Carna.h>
#include <Carna/base/Aggregation.h>
#include <Carna/base/noncopyable.h>
#include <memory>
 
namespace Carna
{
 
namespace base
{
 
 
 
// ----------------------------------------------------------------------------------
// RenderStageSequence
// ----------------------------------------------------------------------------------
 
class CARNA_LIB RenderStageSequence
{
 
    NON_COPYABLE
    
    struct Details;
    const std::unique_ptr< Details > pimpl;
 
public:
 
    RenderStageSequence();
 
    virtual ~RenderStageSequence();
 
    std::size_t stages() const;
    
    void appendStage( RenderStage* stage );
    
    virtual void clearStages();
    
    RenderStage& stageAt( std::size_t position ) const;
 
    template< typename RenderStage >
    Aggregation< RenderStage > findStage() const;
    
protected:
 
    void releaseStages();
 
}; // RenderStageSequence
 
 
template< typename RenderStage >
Aggregation< RenderStage > RenderStageSequence::findStage() const
{
    for( std::size_t index = 0; index < stages(); ++index )
    {
        RenderStage* const rs = dynamic_cast< RenderStage* >( &stageAt( index ) );
        if( rs != nullptr )
        {
            return Aggregation< RenderStage >( *rs );
        }
    }
    return Aggregation< RenderStage >::NULL_PTR;
}
 
 
 
}  // namespace Carna :: base
 
}  // namespace Carna
 
#endif // RENDERSTAGESEQUENCE_H_0874895466