#ifndef __cpExtensions__Algorithms__ImageBlender__h__
#define __cpExtensions__Algorithms__ImageBlender__h__

#include <cpExtensions/Config.h>
#include <vtkThreadedImageAlgorithm.h>
#include <vector>

namespace cpExtensions
{
  namespace Algorithms
  {
    /**
     * @note: Based on vtkImageWeightedSum
     */
    class cpExtensions_EXPORT ImageBlender
      : public vtkThreadedImageAlgorithm
    {
    public:
      typedef ImageBlender Self;
      vtkTypeMacro( ImageBlender, vtkThreadedImageAlgorithm );

    public:
      static Self* New( );

      unsigned int GetNumberOfInputs( );

    protected:
      ImageBlender( );
      virtual ~ImageBlender( );

      int RequestInformation(
        vtkInformation* request,
        vtkInformationVector** inputVector,
        vtkInformationVector* outputVector
        );
      int RequestData(
        vtkInformation* request,
        vtkInformationVector** inputVector,
        vtkInformationVector* outputVector
        );
      void ThreadedRequestData(
        vtkInformation* request,
        vtkInformationVector** inputVector,
        vtkInformationVector* outputVector,
        vtkImageData*** inData, vtkImageData** outData,
        int outExt[ 6 ], int id
        );
      int FillInputPortInformation( int i, vtkInformation* info );

    private:
      // Purposely not implemented.
      ImageBlender( const Self& other );
      void operator=( const Self& other );

    protected:
      std::vector< double > m_Ranges;
    };

  } // ecapseman

} // ecapseman

#endif // __cpExtensions__Algorithms__ImageBlender__h__

// eof - $RCSfile$