itkScalableAffineTransform.h

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 *  Copyright Insight Software Consortium
 *
 *  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 __itkScalableAffineTransform_h
#define __itkScalableAffineTransform_h

#include "itkAffineTransform.h"

namespace itk
{
template<
  class TScalarType = double,   // Data type for scalars (e.g. float or double)
  unsigned int NDimensions = 3 >
// Number of dimensions in the input space
class ITK_EXPORT ScalableAffineTransform:
  public AffineTransform< TScalarType, NDimensions >
{
public:
  typedef ScalableAffineTransform                     Self;
  typedef AffineTransform< TScalarType, NDimensions > Superclass;
  typedef SmartPointer< Self >                        Pointer;
  typedef SmartPointer< const Self >                  ConstPointer;

  itkTypeMacro(ScalableAffineTransform, AffineTransform);

  itkNewMacro(Self);

  itkStaticConstMacro(InputSpaceDimension, unsigned int, NDimensions);
  itkStaticConstMacro(OutputSpaceDimension, unsigned int, NDimensions);
  itkStaticConstMacro(SpaceDimension, unsigned int, NDimensions);
  itkStaticConstMacro( ParametersDimension, unsigned int,
                       NDimensions * ( NDimensions + 1 ) );

  typedef typename Superclass::ParametersType            ParametersType;
  typedef typename Superclass::ParametersValueType       ParametersValueType;
  typedef typename Superclass::JacobianType              JacobianType;
  typedef typename Superclass::ScalarType                ScalarType;
  typedef typename Superclass::InputVectorType           InputVectorType;
  typedef typename Superclass::OutputVectorType          OutputVectorType;
  typedef typename Superclass::InputCovariantVectorType  InputCovariantVectorType;
  typedef typename Superclass::OutputCovariantVectorType OutputCovariantVectorType;
  typedef typename Superclass::InputVnlVectorType        InputVnlVectorType;
  typedef typename Superclass::OutputVnlVectorType       OutputVnlVectorType;
  typedef typename Superclass::InputPointType            InputPointType;
  typedef typename Superclass::OutputPointType           OutputPointType;
  typedef typename Superclass::MatrixType                MatrixType;
  typedef typename Superclass::MatrixValueType           MatrixValueType;
  typedef typename Superclass::InverseMatrixType         InverseMatrixType;
  typedef typename Superclass::CenterType                CenterType;
  typedef typename Superclass::OffsetType                OffsetType;
  typedef typename Superclass::TranslationType           TranslationType;

  typedef typename Superclass::InverseTransformBaseType InverseTransformBaseType;
  typedef typename InverseTransformBaseType::Pointer    InverseTransformBasePointer;

  void SetIdentity(void);

  virtual void SetScale(const InputVectorType & scale);

  virtual void SetScaleComponent(const InputVectorType & scale)
  { this->SetScale(scale); }

  virtual void SetScale(const double scale[NDimensions]);

  virtual void SetScaleComponent(const double scale[NDimensions])
  { this->SetScale(scale); }

  virtual const double * GetScale() const
  { return m_Scale; }
  virtual const double * GetScaleComponent() const
  { return m_Scale; }

  bool GetInverse(Self *inverse) const;

  virtual InverseTransformBasePointer GetInverseTransform() const;

  itkLegacyMacro(void SetMatrixComponent(const MatrixType & matrix));

  itkLegacyMacro(const MatrixType & GetMatrixComponent() const);

  itkLegacyMacro(void SetOffsetComponent(const OffsetType & offset) );

  itkLegacyMacro(const OffsetType & GetOffsetComponent(void) const );

protected:
  ScalableAffineTransform(const MatrixType & matrix,
                          const OutputVectorType & offset);
  ScalableAffineTransform(unsigned int outputSpaceDimension,
                          unsigned int parametersDimension);
  ScalableAffineTransform(unsigned int parametersDimension);
  ScalableAffineTransform();

  void ComputeMatrix();

  virtual ~ScalableAffineTransform();

  void PrintSelf(std::ostream & s, Indent indent) const;

  void SetVarScale(const double *scale)
  { for ( int i = 0; i < InputSpaceDimension; i++ ) { m_Scale[i] = scale[i]; } }
private:

  ScalableAffineTransform(const Self & other);
  const Self & operator=(const Self &);

  double          m_Scale[NDimensions];
  InputVectorType m_MatrixScale;
}; //class ScalableAffineTransform
}  // namespace itk

// Define instantiation macro for this template.
#define ITK_TEMPLATE_ScalableAffineTransform(_, EXPORT, TypeX, TypeY)     \
  namespace itk                                                           \
  {                                                                       \
  _( 2 ( class EXPORT ScalableAffineTransform< ITK_TEMPLATE_2 TypeX > ) ) \
  namespace Templates                                                     \
  {                                                                       \
  typedef ScalableAffineTransform< ITK_TEMPLATE_2 TypeX >                 \
  ScalableAffineTransform##TypeY;                                       \
  }                                                                       \
  }

#if ITK_TEMPLATE_EXPLICIT
#include "Templates/itkScalableAffineTransform+-.h"
#endif

#if ITK_TEMPLATE_TXX
#include "itkScalableAffineTransform.hxx"
#endif

#endif /* __itkScalableAffineTransform_h */