text: /*=========================================================================
   *
   *  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 __itkAffineGeometryFrame_h
  #define __itkAffineGeometryFrame_h
  
  #include "itkObject.h"
  #include "itkMacro.h"
  #include "itkScalableAffineTransform.h"
  #include "itkBoundingBox.h"
  
  namespace itk
  {
  /** \class AffineGeometryFrame
   * \brief Describes the geometry of a data object
   * \ingroup ITKSpatialObjects
   */
  template< typename TScalar = double, unsigned int NDimensions = 3 >
  class AffineGeometryFrame:public Object
  {
  public:
    typedef AffineGeometryFrame        Self;
    typedef Object                     Superclass;
    typedef SmartPointer< Self >       Pointer;
    typedef SmartPointer< const Self > ConstPointer;
  
    typedef ScalableAffineTransform< TScalar, NDimensions >     TransformType;
    typedef BoundingBox< IdentifierType, NDimensions, TScalar > BoundingBoxType;
    typedef typename BoundingBoxType::BoundsArrayType           BoundsArrayType;
    typedef typename BoundingBoxType::Pointer                   BoundingBoxPointer;
  
    /** Method for creation through the object factory. */
    itkNewMacro(Self);
  
    /** Method for creation through the object factory. */
    itkTypeMacro(AffineGeometryFrame, Object);
  
    /** Get the bounding box */
    itkGetModifiableObjectMacro(BoundingBox, BoundingBoxType);
  
    const BoundsArrayType GetBounds() const
    {
      itkAssertInDebugAndIgnoreInReleaseMacro( m_BoundingBox.IsNotNull() );
      return m_BoundingBox->GetBounds();
    }
  
    /** Set the bounding box Only possible via the BoundsArray
     * to make clear that a copy of the bounding-box is stored,
     * not a reference to it. */
    virtual void SetBounds(const BoundsArrayType & bounds);
  
    /** Get the extent of the bounding box */
    TScalar GetExtent(unsigned int direction) const
    {
      itkAssertInDebugAndIgnoreInReleaseMacro(direction < NDimensions);
      itkAssertInDebugAndIgnoreInReleaseMacro( m_BoundingBox.IsNotNull() );
      BoundsArrayType bounds = m_BoundingBox->GetBounds();
      return bounds[direction * 2 + 1] - bounds[direction * 2];
    }
  
    /** Set/Get the IndexToObjectTransform */
    itkSetObjectMacro(IndexToObjectTransform, TransformType);
    itkGetModifiableObjectMacro(IndexToObjectTransform, TransformType);
  
    /** Set/Get the ObjectToNodeTransform */
    itkSetObjectMacro(ObjectToNodeTransform, TransformType);
    itkGetModifiableObjectMacro(ObjectToNodeTransform, TransformType);
  
    /** Set/Get the IndexToWorldTransform */
    itkSetObjectMacro(IndexToWorldTransform, TransformType);
    itkGetModifiableObjectMacro(IndexToWorldTransform, TransformType);
  
    /** Get the IndexToNodeTransform
     *  This Transform cannot be set, and is just computed internally */
    itkGetModifiableObjectMacro(IndexToNodeTransform, TransformType);
  
    /** Initialize the geometry frame */
    virtual void Initialize();
  
    /** Clone the geometry frame */
    virtual LightObject::Pointer InternalClone() const;
  
  protected:
  
    AffineGeometryFrame();
    virtual ~AffineGeometryFrame();
    void PrintSelf(std::ostream & os, Indent indent) const;
  
    /** used in clone to initialize the newly created geometry */
    virtual void InitializeGeometry(Self *newGeometry) const;
  
    void SetBoundsArray(const BoundsArrayType & bounds,
                        BoundingBoxPointer & boundingBox);
  
    mutable BoundingBoxPointer m_BoundingBox;
  
    /** Transform from unit coordinates to object coordinates */
    typename TransformType::Pointer m_IndexToObjectTransform;
    typename TransformType::Pointer m_ObjectToNodeTransform;
    typename TransformType::Pointer m_IndexToNodeTransform;
    typename TransformType::Pointer m_IndexToWorldTransform;
  
  private:
    AffineGeometryFrame(const Self &); //purposely not implemented
    void operator=(const Self &);      //purposely not implemented
  };
  } // namespace itk
  
  #ifndef ITK_MANUAL_INSTANTIATION
  #include "itkAffineGeometryFrame.hxx"
  #endif
  
  #endif /* __itkAffineGeometryFrame_h */
  