ImageReaderBase.h

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//============================================================================
//  Copyright (c) Kitware, Inc.
//  All rights reserved.
//  See LICENSE.txt 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.
//============================================================================
#ifndef vtk_m_io_ImageReaderBase_h
#define vtk_m_io_ImageReaderBase_h
 
#include <vtkm/cont/DataSet.h>
 
#include <vtkm/io/vtkm_io_export.h>
 
namespace vtkm
{
namespace io
{
 
class VTKM_IO_EXPORT ImageReaderBase
{
public:
  using ColorArrayType = vtkm::cont::ArrayHandle<vtkm::Vec4f_32>;
 
  explicit VTKM_CONT ImageReaderBase(const char* filename);
  explicit VTKM_CONT ImageReaderBase(const std::string& filename);
  virtual VTKM_CONT ~ImageReaderBase() noexcept;
  ImageReaderBase(const ImageReaderBase&) = delete;
  ImageReaderBase& operator=(const ImageReaderBase&) = delete;
 
  VTKM_CONT const vtkm::cont::DataSet& ReadDataSet();
 
  VTKM_CONT const vtkm::cont::DataSet& GetDataSet() const { return this->DataSet; }
 
  VTKM_CONT const std::string& GetPointFieldName() const { return this->PointFieldName; }
  VTKM_CONT void SetPointFieldName(const std::string& name) { this->PointFieldName = name; }
 
  VTKM_CONT const std::string& GetFileName() const { return this->FileName; }
  VTKM_CONT void SetFileName(const std::string& filename) { this->FileName = filename; }
 
protected:
  VTKM_CONT virtual void Read() = 0;
 
  void InitializeImageDataSet(const vtkm::Id& width,
                              const vtkm::Id& height,
                              const ColorArrayType& pixels);
 
  std::string FileName;
  std::string PointFieldName = "color";
  vtkm::cont::DataSet DataSet;
};
}
} // namespace vtkm::io
 
#endif //vtk_m_io_ImageReaderBase_h