Method LoadVariableData

IO/Geometry/vtkWindBladeReader.cxx:528–574

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

// Load one variable data array of BLOCK structure into ParaView
//------------------------------------------------------------------------------
void vtkWindBladeReader::LoadVariableData(int var)
{
  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
  // not used? int byteCount;
  fseek(this->Internal->FilePtr, this->VariableOffset[var], SEEK_SET);

  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++)
  {
    // Read the block of data
    size_t cnt;
    if ((cnt = fread(block, sizeof(float), this->BlockSize, this->Internal->FilePtr)) !=
      this->BlockSize)
    {
      // This is really an error, but for the time being we report a
      // warning
      vtkWarningMacro("WindBladeReader error reading file: "
        << this->Filename << " Premature EOF while reading block of data."
        << " Expected " << this->BlockSize << " but got " << cnt);
    }

    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
    fseek(this->Internal->FilePtr, (2 * sizeof(int)), SEEK_CUR);
  }
  delete[] block;
}

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