Method LoadVariableData

IO/MPIParallel/vtkPWindBladeReader.cxx:200–245

------------------------------------------------------------------------------ Load one variable data array of BLOCK structure into ParaView ------------------------------------------------------------------------------

// Load one variable data array of BLOCK structure into ParaView
//------------------------------------------------------------------------------
void vtkPWindBladeReader::LoadVariableData(int var)
{
  if (!vtkMPIController::GetGlobalController()->IsA("vtkMPIController"))
  {
    this->Superclass::LoadVariableData(var);
    return;
  }

  this->Data[var]->Delete();
  this->Data[var] = vtkFloatArray::New();
  this->Data[var]->SetName(VariableName[var].c_str());

  // Skip to the appropriate variable block and read byte count
  char native[7] = "native";
  MPICall(MPI_File_set_view(this->PInternal->FilePtr, this->VariableOffset[var], MPI_BYTE, MPI_BYTE,
    native, MPI_INFO_NULL));

  int numberOfComponents = 0, planeSize = 0, rowSize;
  float* varData = nullptr;
  float* block = new float[this->BlockSize];
  this->InitVariableData(var, numberOfComponents, varData, planeSize, rowSize);
  for (int comp = 0; comp < numberOfComponents; comp++)
  {
    MPI_Status status;
    MPICall(
      MPI_File_read_all(this->PInternal->FilePtr, block, this->BlockSize, MPI_FLOAT, &status));

    int pos = comp;
    for (int k = this->SubExtent[4]; k <= this->SubExtent[5]; k++)
    {
      for (int j = this->SubExtent[2]; j <= this->SubExtent[3]; j++)
      {
        for (int i = this->SubExtent[0]; i <= this->SubExtent[1]; i++)
        {
          int index = (k * planeSize) + (j * rowSize) + i;
          varData[pos] = block[index];
          pos += numberOfComponents;
        }
      }
    }

    // Skip closing and opening byte sizes
    MPICall(MPI_File_seek(this->PInternal->FilePtr, (2 * sizeof(int)), MPI_SEEK_CUR));
  }
  delete[] block;
}

//------------------------------------------------------------------------------
// Load one variable data array of BLOCK structure into ParaView