#include <cpInstances/DataObjects/BoundingBox.h>
#include <limits>
#include <vtkDataSet.h>

// -------------------------------------------------------------------------
void cpInstances::DataObjects::BoundingBox::
SetDataObject( DataObject* o )
{
  auto i = o->GetITK< itk::LightObject >( );
  auto v = o->GetVTK< vtkObjectBase >( );
  if( v != NULL )      this->SetVTK( v );
  else if( i != NULL ) this->SetITK( i );
  this->_UpdateVTK( );
}

// -------------------------------------------------------------------------
void cpInstances::DataObjects::BoundingBox::
Copy( Self* other )
{
  this->m_Points[ 0 ] = other->m_Points[ 0 ];
  this->m_Points[ 1 ] = other->m_Points[ 1 ];
  this->Modified( );
}

// -------------------------------------------------------------------------
void cpInstances::DataObjects::BoundingBox::
Blend( Self* other )
{
  if( this->m_Points[ 0 ].size( ) < other->m_Points[ 0 ].size( ) )
    this->m_Points[ 0 ].resize(
      other->m_Points[ 0 ].size( ),
      std::numeric_limits< double >::max( )
      );
  if( this->m_Points[ 1 ].size( ) < other->m_Points[ 1 ].size( ) )
    this->m_Points[ 1 ].resize(
      other->m_Points[ 1 ].size( ),
      -std::numeric_limits< double >::max( )
      );
  for( unsigned int d = 0; d < this->m_Points[ 0 ].size( ); ++d )
    if( other->m_Points[ 0 ][ d ] < this->m_Points[ 0 ][ d ] )
      this->m_Points[ 0 ][ d ] = other->m_Points[ 0 ][ d ];
  for( unsigned int d = 0; d < this->m_Points[ 1 ].size( ); ++d )
    if( other->m_Points[ 1 ][ d ] > this->m_Points[ 1 ][ d ] )
      this->m_Points[ 1 ][ d ] = other->m_Points[ 1 ][ d ];
  this->Modified( );
  this->_UpdateVTK( );
}

// -------------------------------------------------------------------------
cpInstances::DataObjects::BoundingBox::
BoundingBox( )
  : Superclass( )
{
  this->m_Points[ 0 ].push_back( double( 0 ) );
  this->m_Points[ 1 ].push_back( double( 0 ) );
  this->m_Outline = vtkSmartPointer< vtkOutlineSource >::New( );
  this->_UpdateVTK( );
}

// -------------------------------------------------------------------------
cpInstances::DataObjects::BoundingBox::
~BoundingBox( )
{
}

// -------------------------------------------------------------------------
void cpInstances::DataObjects::BoundingBox::
_UpdateVTK( )
{
  auto dobj = this->GetVTK< vtkDataSet >( );
  if( dobj == NULL )
    return;

  // Get bounds
  double bounds[ 6 ];
  dobj->GetBounds( bounds );

  this->m_Points[ 0 ].clear( );
  this->m_Points[ 1 ].clear( );
  this->m_Points[ 0 ].push_back( bounds[ 0 ] );
  this->m_Points[ 0 ].push_back( bounds[ 2 ] );
  this->m_Points[ 0 ].push_back( bounds[ 4 ] );
  this->m_Points[ 1 ].push_back( bounds[ 1 ] );
  this->m_Points[ 1 ].push_back( bounds[ 3 ] );
  this->m_Points[ 1 ].push_back( bounds[ 5 ] );

  // Update vtk objects
  this->m_Outline->SetBounds( bounds );
  this->m_Outline->Update( );
  this->m_VTK = this->m_Outline->GetOutput( );
}

// eof - $RCSfile$