#include <VTKFilters/MarchingCubes.h>
#include <cpInstances/DataObjects/Image.h>
#include <cpInstances/DataObjects/Mesh.h>

#include <vtkImageData.h>
#include <vtkMarchingCubes.h>
#include <vtkMarchingSquares.h>

// -------------------------------------------------------------------------
cpPluginsVTKFilters::MarchingCubes::
MarchingCubes( )
  : Superclass( )
{
  this->_ConfigureInput< cpInstances::DataObjects::Image >( "Input", true, false );
  this->_ConfigureOutput< cpInstances::DataObjects::Mesh >( "Output" );
  this->m_Parameters.ConfigureAsRealList( "Thresholds" );
}

// -------------------------------------------------------------------------
cpPluginsVTKFilters::MarchingCubes::
~MarchingCubes( )
{
}

// -------------------------------------------------------------------------
void cpPluginsVTKFilters::MarchingCubes::
_GenerateData( )
{
  // Get input
  auto image = this->GetInput( "Input" );
  vtkImageData* vtk_image = image->GetVTK< vtkImageData >( );
  if( vtk_image == NULL )
    this->_Error( "Input does not have a valid VTK conversion." );

  std::vector< double > values =
    this->m_Parameters.GetRealList( "Thresholds" );
  vtkPolyData* pd = NULL;
  if( vtk_image->GetDataDimension( ) == 2 )
  {
    vtkMarchingSquares* ms = this->_CreateVTK< vtkMarchingSquares >( );
    ms->SetInputData( vtk_image );
    for( unsigned int i = 0; i < values.size( ); ++i )
      ms->SetValue( i, values[ i ] );
    ms->Update( );
    pd = ms->GetOutput( );
  }
  else if( vtk_image->GetDataDimension( ) == 3 )
  {
    vtkMarchingCubes* mc = this->_CreateVTK< vtkMarchingCubes >( );
    mc->ComputeNormalsOff( );
    mc->SetInputData( vtk_image );
    for( unsigned int i = 0; i < values.size( ); ++i )
      mc->SetValue( i, values[ i ] );
    mc->Update( );
    pd = mc->GetOutput( );
  }
  else
    this->_Error( "Input data does not have a valid dimension." );

  // Connect output
  this->GetOutput( "Output" )->SetVTK( pd );
}

// eof - $RCSfile$