/*=========================================================================

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkPLinearExtrusionFilter.cxx,v $

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#include "vtkPLinearExtrusionFilter.h"

#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPolyData.h"
#include "vtkStreamingDemandDrivenPipeline.h"

vtkCxxRevisionMacro(vtkPLinearExtrusionFilter, "$Revision: 1.6 $");
vtkStandardNewMacro(vtkPLinearExtrusionFilter);

//----------------------------------------------------------------------------
vtkPLinearExtrusionFilter::vtkPLinearExtrusionFilter()
{
  // Since I do not thing the visual impact of invariance is significant, 
  // we will default to not spend the extra effort to get the 
  // extra layer of ghost cells.
  this->PieceInvariant = 0;
}

//----------------------------------------------------------------------------
int vtkPLinearExtrusionFilter::RequestData(
  vtkInformation *request,
  vtkInformationVector **inputVector,
  vtkInformationVector *outputVector)
{
  // get the info object
  vtkInformation *outInfo = outputVector->GetInformationObject(0);

  // get the ouptut
  vtkPolyData *output = vtkPolyData::SafeDownCast(
    outInfo->Get(vtkDataObject::DATA_OBJECT()));

  if (!this->vtkLinearExtrusionFilter::RequestData(request,
                                                   inputVector, outputVector))
    {
    return 0;
    }

  if (this->PieceInvariant)
    {
    output->RemoveGhostCells(
      outInfo->Get(
        vtkStreamingDemandDrivenPipeline::UPDATE_NUMBER_OF_GHOST_LEVELS())+1);
    }

  return 1;
}

//--------------------------------------------------------------------------
int vtkPLinearExtrusionFilter::RequestUpdateExtent(
  vtkInformation *vtkNotUsed(request),
  vtkInformationVector **inputVector,
  vtkInformationVector *outputVector)
{
  vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
  vtkInformation *outInfo = outputVector->GetInformationObject(0);

  inInfo->Set(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER(),
              outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER()));
  inInfo->Set(vtkStreamingDemandDrivenPipeline::UPDATE_NUMBER_OF_PIECES(),
              outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_NUMBER_OF_PIECES()));

  int ghostLevel = outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_NUMBER_OF_GHOST_LEVELS());

  if (this->PieceInvariant)
    {
    inInfo->Set(vtkStreamingDemandDrivenPipeline::UPDATE_NUMBER_OF_GHOST_LEVELS(),
                ghostLevel + 1);
    }
  else
    {
    inInfo->Set(vtkStreamingDemandDrivenPipeline::UPDATE_NUMBER_OF_GHOST_LEVELS(),
                ghostLevel);
    }

  return 1;
}

//----------------------------------------------------------------------------
void vtkPLinearExtrusionFilter::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os,indent);

  os << indent << "PieceInvariant: "
     << this->PieceInvariant << "\n";
}