Method ExecuteDataWithInformation

IO/Image/vtkHDRReader.cxx:129–150

------------------------------------------------------------------------------ This function reads a data from a file. The datas extent/axes are assumed to be the same as the file extent/order.

// This function reads a data from a file.  The datas extent/axes
// are assumed to be the same as the file extent/order.
void vtkHDRReader::ExecuteDataWithInformation(vtkDataObject* output, vtkInformation* outInfo)
{
  vtkImageData* data = this->AllocateOutputData(output, outInfo);

  if (this->UpdateExtentIsEmpty(outInfo, output))
  {
    return;
  }
  if (this->InternalFileName == nullptr)
  {
    vtkErrorMacro(<< "Either a FileName or FilePrefix must be specified.");
    return;
  }

  data->GetPointData()->GetScalars()->SetName("HDRImage");

  this->ComputeDataIncrements();

  // Only float value for RGBE data
  float* outPtr = reinterpret_cast<float*>(data->GetScalarPointer());
  this->HDRReaderUpdate(data, outPtr);
}

//------------------------------------------------------------------------------
void vtkHDRReader::HDRReaderUpdate(vtkImageData* data, float* outPtr)