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

  Program:   Visualization Toolkit
  Module:    vtkUnstructuredGridVolumeMapper.cxx

  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 "vtkUnstructuredGridVolumeMapper.h"

#include "vtkDataSet.h"
#include "vtkExecutive.h"
#include "vtkInformation.h"
#include "vtkUnstructuredGrid.h"

// Construct a vtkUnstructuredGridVolumeMapper with empty scalar input and
// clipping off.
vtkUnstructuredGridVolumeMapper::vtkUnstructuredGridVolumeMapper()
{
  this->BlendMode = vtkUnstructuredGridVolumeMapper::COMPOSITE_BLEND;
}

vtkUnstructuredGridVolumeMapper::~vtkUnstructuredGridVolumeMapper() = default;

void vtkUnstructuredGridVolumeMapper::SetInputData(vtkDataSet* genericInput)
{
  vtkUnstructuredGridBase* input = vtkUnstructuredGridBase::SafeDownCast(genericInput);

  if (input)
  {
    this->SetInputData(input);
  }
  else
  {
    vtkErrorMacro("The SetInput method of this mapper requires "
                  "vtkUnstructuredGridBase as input");
  }
}

void vtkUnstructuredGridVolumeMapper::SetInputData(vtkUnstructuredGridBase* input)
{
  this->SetInputDataInternal(0, input);
}

vtkUnstructuredGridBase* vtkUnstructuredGridVolumeMapper::GetInput()
{
  if (this->GetNumberOfInputConnections(0) < 1)
  {
    return nullptr;
  }
  return vtkUnstructuredGridBase::SafeDownCast(this->GetExecutive()->GetInputData(0, 0));
}

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

  os << indent << "Blend Mode: " << this->BlendMode << endl;
}

//------------------------------------------------------------------------------
int vtkUnstructuredGridVolumeMapper::FillInputPortInformation(
  int vtkNotUsed(port), vtkInformation* info)
{
  info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkUnstructuredGridBase");
  return 1;
}