// =========================================================================
// @author Leonardo Florez Valencia
// @email florez-l@javeriana.edu.co
// =========================================================================
#ifndef __fpa__Filters__RegionGrow__hxx__
#define __fpa__Filters__RegionGrow__hxx__

#include <limits>
#include <fpa/Functors/RegionGrow/Tautology.h>

// -------------------------------------------------------------------------
template< class _TDataInterface >
void fpa::Filters::RegionGrow< _TDataInterface >::
SetPredicate( TScalarPredicate* p )
{
  if( this->m_ScalarPredicate.GetPointer( ) != p )
  {
    this->_Deassociate( this->m_ScalarPredicate );
    this->m_ScalarPredicate = p;
    this->_Associate( this->m_ScalarPredicate );
    this->Modified( );

  } // fi
}

// -------------------------------------------------------------------------
template< class _TDataInterface >
void fpa::Filters::RegionGrow< _TDataInterface >::
SetPredicate( TVertexPredicate* p )
{
  if( this->m_VertexPredicate.GetPointer( ) != p )
  {
    this->_Deassociate( this->m_VertexPredicate );
    this->m_VertexPredicate = p;
    this->_Associate( this->m_VertexPredicate );
    this->Modified( );

  } // fi
}

// -------------------------------------------------------------------------
template< class _TDataInterface >
typename fpa::Filters::RegionGrow< _TDataInterface >::
TOutputValue fpa::Filters::RegionGrow< _TDataInterface >::
GetOutsideValue( ) const
{
  return( this->GetInitValue( ) );
}

// -------------------------------------------------------------------------
template< class _TDataInterface >
void fpa::Filters::RegionGrow< _TDataInterface >::
SetOutsideValue( const TOutputValue& v )
{
  this->SetInitValue( v );
}

// -------------------------------------------------------------------------
template< class _TDataInterface >
fpa::Filters::RegionGrow< _TDataInterface >::
RegionGrow( )
  : Superclass( false )
{
  this->SetOutsideValue( TOutputValue( 0 ) );
  this->m_InsideValue = std::numeric_limits< TOutputValue >::max( );
  this->SetPredicate(
    fpa::Functors::RegionGrow::Tautology< TInputValue >::New( )
    );
}

// -------------------------------------------------------------------------
template< class _TDataInterface >
fpa::Filters::RegionGrow< _TDataInterface >::
~RegionGrow( )
{
}

// -------------------------------------------------------------------------
template< class _TDataInterface >
void fpa::Filters::RegionGrow< _TDataInterface >::
_PostComputeOutputValue( TNode& n )
{
  TInputValue value = this->_GetInputValue( n.Vertex );
  bool inside = false;
  if( this->m_ScalarPredicate.IsNotNull( ) )
    inside = this->m_ScalarPredicate->Evaluate( value );
  if( this->m_VertexPredicate.IsNotNull( ) )
    inside &= this->m_VertexPredicate->Evaluate( n.Vertex, n.Parent );
  if( !inside )
  {
    n.Value = this->GetOutsideValue( );
    n.FrontId = 0;
  }
  else
    n.Value = this->GetInsideValue( );
}

// -------------------------------------------------------------------------
template< class _TDataInterface >
void fpa::Filters::RegionGrow< _TDataInterface >::
_PreComputeOutputValue( TNode& n )
{
  // Nothing to do with this algorithm
}

#endif // __fpa__Filters__RegionGrow__hxx__
// eof - $RCSfile$