lib/cpExtensions/Algorithms/GradientImageFunctionBase.hxx

   1 #ifndef __CPEXTENSIONS__ALGORITHMS__GRADIENTIMAGEFUNCTIONBASE__HXX__
   2 #define __CPEXTENSIONS__ALGORITHMS__GRADIENTIMAGEFUNCTIONBASE__HXX__
   3
   4 // -------------------------------------------------------------------------
   5 template< class _TGradient, class _TMask >
   6 void
   7 cpExtensions::Algorithms::GradientImageFunctionBase< _TGradient, _TMask >::
   8 Prepare( ) const
   9 {
  10 }
  11
  12 // -------------------------------------------------------------------------
  13 template< class _TGradient, class _TMask >
  14 typename
  15 cpExtensions::Algorithms::GradientImageFunctionBase< _TGradient, _TMask >::
  16 TOutput
  17 cpExtensions::Algorithms::GradientImageFunctionBase< _TGradient, _TMask >::
  18 Evaluate( const TPoint& p ) const
  19 {
  20   TIndex i;
  21   this->GetInputImage( )->TransformPhysicalPointToIndex( p, i );
  22   return( this->EvaluateAtIndex( i ) );
  23 }
  24
  25 // -------------------------------------------------------------------------
  26 template< class _TGradient, class _TMask >
  27 typename
  28 cpExtensions::Algorithms::GradientImageFunctionBase< _TGradient, _TMask >::
  29 TOutput
  30 cpExtensions::Algorithms::GradientImageFunctionBase< _TGradient, _TMask >::
  31 EvaluateAtIndex( const TIndex& i ) const
  32 {
  33   bool eval = true;
  34   if( this->m_Mask.IsNotNull( ) )
  35     eval = ( ( unsigned long )( this->m_Mask->GetPixel( i ) ) > 0 );
  36   if( eval )
  37     return( this->_Evaluate( i ) );
  38   else
  39     return( TOutput( -1 ) );
  40 }
  41
  42 // -------------------------------------------------------------------------
  43 template< class _TGradient, class _TMask >
  44 typename
  45 cpExtensions::Algorithms::GradientImageFunctionBase< _TGradient, _TMask >::
  46 TOutput
  47 cpExtensions::Algorithms::GradientImageFunctionBase< _TGradient, _TMask >::
  48 EvaluateAtContinuousIndex( const TContIndex& i ) const
  49 {
  50   TPoint p;
  51   this->GetInputImage( )->TransformContinuousIndexToPhysicalPoint( i, p );
  52   return( this->Evaluate( p ) );
  53 }
  54
  55 // -------------------------------------------------------------------------
  56 template< class _TGradient, class _TMask >
  57 cpExtensions::Algorithms::GradientImageFunctionBase< _TGradient, _TMask >::
  58 GradientImageFunctionBase( )
  59   : Superclass( )
  60 {
  61 }
  62
  63 // -------------------------------------------------------------------------
  64 template< class _TGradient, class _TMask >
  65 cpExtensions::Algorithms::GradientImageFunctionBase< _TGradient, _TMask >::
  66 ~GradientImageFunctionBase( )
  67 {
  68 }
  69
  70 #endif // __CPEXTENSIONS__ALGORITHMS__GRADIENTIMAGEFUNCTIONBASE__HXX__
  71
  72 // eof - $RCSfile$