/*=========================================================================
 *
 *  Copyright UMC Utrecht and contributors
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkGPUAffineTransform_h
#define __itkGPUAffineTransform_h

#include "itkAffineTransform.h"
#include "itkGPUMatrixOffsetTransformBase.h"

namespace itk
{
/** \class GPUAffineTransform
 * \brief GPU version of AffineTransform.
 *
 * \author Denis P. Shamonin and Marius Staring. Division of Image Processing,
 * Department of Radiology, Leiden, The Netherlands
 *
 * \note This work was funded by the Netherlands Organisation for
 * Scientific Research (NWO NRG-2010.02 and NWO 639.021.124).
 *
 * \ingroup GPUCommon
 */
template< typename TScalarType = float, unsigned int NDimensions = 3,
typename TParentTransform      = AffineTransform< TScalarType, NDimensions > >
class GPUAffineTransform :
  public TParentTransform,
  public GPUMatrixOffsetTransformBase< TScalarType, NDimensions, NDimensions >
{
public:

  /** Standard class typedefs. */
  typedef GPUAffineTransform Self;
  typedef TParentTransform   CPUSuperclass;
  typedef GPUMatrixOffsetTransformBase< TScalarType,
    NDimensions,
    NDimensions > GPUSuperclass;

  typedef SmartPointer< Self >       Pointer;
  typedef SmartPointer< const Self > ConstPointer;

  /** Method for creation through the object factory. */
  itkNewMacro( Self );

  /** Run-time type information (and related methods). */
  itkTypeMacro( GPUAffineTransform, CPUSuperclass );

  /** Typedefs from GPUSuperclass. */
  typedef typename GPUSuperclass::CPUMatrixType        CPUMatrixType;
  typedef typename GPUSuperclass::CPUInverseMatrixType CPUInverseMatrixType;
  typedef typename GPUSuperclass::CPUOutputVectorType  CPUOutputVectorType;

  /** Get CPU matrix of an MatrixOffsetTransformBase. */
  virtual const CPUMatrixType & GetCPUMatrix( void ) const { return this->GetMatrix(); }

  /** Get CPU inverse matrix of an MatrixOffsetTransformBase. */
  virtual const CPUInverseMatrixType & GetCPUInverseMatrix( void ) const { return this->GetInverseMatrix(); }

  /** Get CPU offset of an MatrixOffsetTransformBase. */
  virtual const CPUOutputVectorType & GetCPUOffset( void ) const { return this->GetOffset(); }

protected:

  GPUAffineTransform() {}
  virtual ~GPUAffineTransform() {}

private:

  GPUAffineTransform( const Self & other ); // purposely not implemented
  const Self & operator=( const Self & );   // purposely not implemented

};

} // end namespace itk

#endif /* __itkGPUAffineTransform_h */
