+// -------------------------------------------------------------------------
+// @author Leonardo Florez-Valencia (florez-l@javeriana.edu.co)
+// -------------------------------------------------------------------------
+
+#ifndef __CPPLUGINS__EXTENSIONS__ALGORITHMS__ISOIMAGESLICER__HXX__
+#define __CPPLUGINS__EXTENSIONS__ALGORITHMS__ISOIMAGESLICER__HXX__
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+unsigned long cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+GetMTime( ) const
+{
+ unsigned long t = this->Superclass::GetMTime( );
+ unsigned long sT = this->m_Slicer->GetMTime( );
+ unsigned long cT = this->m_Collapsor->GetMTime( );
+ unsigned long tT = this->m_Transform->GetMTime( );
+ t = ( sT > t )? sT: t;
+ t = ( cT > t )? cT: t;
+ t = ( tT > t )? tT: t;
+ return( t );
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+const typename cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+TInterpolateFunction*
+cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+GetInterpolator( ) const
+{
+ return( this->m_Slicer->GetInterpolator( ) );
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+const typename cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+TMatrix& cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+GetRotation( ) const
+{
+ return( this->m_Transform->GetMatrix( ) );
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+const typename cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+TVector& cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+GetTranslation( ) const
+{
+ return( this->m_Transform->GetOffset( ) );
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+void cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+SetInterpolator( TInterpolateFunction* f )
+{
+ this->m_Slicer->SetInterpolator( f );
+ this->Modified( );
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+template< class M >
+void cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+SetRotation( const M& r )
+{
+ TMatrix rotation;
+ for( unsigned int i = 0; i < Self::Dim; ++i )
+ for( unsigned int j = 0; j < Self::Dim; ++j )
+ rotation[ i ][ j ] = r[ i ][ j ];
+ this->m_Transform->SetMatrix( rotation );
+ this->Modified( );
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+template< class V >
+void cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+SetTranslation( const V& t )
+{
+ TVector off;
+ for( unsigned int i = 0; i < Self::Dim; ++i )
+ off[ i ] = t[ i ];
+ this->m_Transform->SetOffset( off );
+ this->Modified( );
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+void cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+SetSize( TScalar s )
+{
+ this->m_Size.Fill( s );
+ this->Modified( );
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+BaseImageSlicer( )
+ : Superclass( ),
+ m_SizeFromMaximum( false ),
+ m_SizeFromMinimum( false ),
+ m_Spacing( TSpacingValue( 1 ) ),
+ m_SpacingFromMaximum( false ),
+ m_SpacingFromMinimum( false )
+{
+ this->m_Size.Fill( TScalar( 1 ) );
+
+ // Slicer
+ this->m_Slicer = TSlicer::New( );
+
+ TIndex idx;
+ idx.Fill( 0 );
+ this->m_Slicer->SetOutputStartIndex( idx );
+
+ // Dimension collapsor
+ this->m_Collapsor = TCollapsor::New( );
+ this->m_Collapsor->SetInput( this->m_Slicer->GetOutput( ) );
+
+ this->m_Transform = TTransform::New( );
+ this->m_Transform->SetIdentity( );
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+~BaseImageSlicer( )
+{
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+void cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+GenerateOutputInformation( )
+{
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+void cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+GenerateInputRequestedRegion( )
+{
+ TImage* input = const_cast< TImage* >( this->GetInput( ) );
+ if( input != NULL )
+ input->SetRequestedRegionToLargestPossibleRegion( );
+}
+
+// -------------------------------------------------------------------------
+template< class R, class I >
+void cpPlugins::Extensions::Algorithms::BaseImageSlicer< R, I >::
+GenerateData( )
+{
+ const TImage* input = this->GetInput( );
+
+ // Spacing
+ TSpacing spac;
+ if( this->m_SpacingFromMaximum || this->m_SpacingFromMinimum )
+ {
+ spac = input->GetSpacing( );
+ TSpacingValue minIso = spac[ 0 ];
+ TSpacingValue maxIso = spac[ 0 ];
+ for( unsigned int i = 1; i < Self::Dim; i++ )
+ {
+ minIso = ( spac[ i ] < minIso )? spac[ i ]: minIso;
+ maxIso = ( spac[ i ] > maxIso )? spac[ i ]: maxIso;
+
+ } // rof
+ this->m_Spacing = ( this->m_SpacingFromMinimum )? minIso: maxIso;
+
+ } // fi
+ spac.Fill( this->m_Spacing );
+
+ // Size and origin
+ if( this->m_SizeFromMaximum || this->m_SizeFromMinimum )
+ {
+ TSize iSize = input->GetRequestedRegion( ).GetSize( );
+ TSpacing iSpac = input->GetSpacing( );
+ TScalar minSize = TScalar( iSize[ 0 ] ) * TScalar( iSpac[ 0 ] );
+ TScalar maxSize = minSize;
+ for( unsigned int i = 1; i < Self::Dim; i++ )
+ {
+ TScalar v = TScalar( iSize[ i ] ) * TScalar( iSpac[ i ] );
+ minSize = ( v < minSize )? v: minSize;
+ maxSize = ( v > maxSize )? v: maxSize;
+
+ } // rof
+ if( this->m_SizeFromMaximum )
+ this->m_Size.Fill( maxSize );
+ else
+ this->m_Size.Fill( minSize );
+
+ } // fi
+
+ TSize size;
+ typename TSlicer::OriginPointType origin;
+ size[ 0 ] = 1;
+ origin[ 0 ] = 0;
+ for( unsigned int i = 1; i < Self::Dim; i++ )
+ {
+ double s = double( this->m_Size[ i ] ) / double( spac[ i ] );
+ size[ i ] = ( unsigned int )( s );
+ origin[ i ] = -( 0.5 * this->m_Size[ i ] );
+
+ } // rof
+
+ // Prepare slicer
+ this->m_Slicer->SetInput( input );
+ this->m_Slicer->SetTransform( this->m_Transform );
+ this->m_Slicer->SetOutputSpacing( spac );
+ this->m_Slicer->SetOutputOrigin( origin );
+ this->m_Slicer->SetSize( size );
+ this->m_Slicer->SetDefaultPixelValue( this->m_DefaultValue );
+
+ // Slice!
+ // Note: UpdateLargestPossibleRegion( ) is used since we need the
+ // output regions to be updated at each filter call.
+ this->m_Slicer->UpdateLargestPossibleRegion( );
+
+ // Collapse result
+ TRegion region = this->m_Slicer->GetOutput( )->GetRequestedRegion( );
+ TSize regionSize = region.GetSize( );
+ regionSize[ 0 ] = 0;
+ region.SetSize( regionSize );
+ this->m_Collapsor->SetExtractionRegion( region );
+
+ this->m_Collapsor->GraftOutput( this->GetOutput( ) );
+ this->m_Collapsor->UpdateLargestPossibleRegion( );
+ this->GraftOutput( this->m_Collapsor->GetOutput( ) );
+}
+
+#endif // __CPPLUGINS__EXTENSIONS__ALGORITHMS__ISOIMAGESLICER__HXX__
+
+// eof - $RCSfile$