Method GoToNextElement

Charts/Core/vtkChartMatrix.cxx:219–257

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//------------------------------------------------------------------------------
void vtkChartMatrix::GoToNextElement(vtkVector2i& index, vtkVector2f& offset)
{
  const int& numRows = this->Size.GetY();
  int& i = this->Private->Index[0];
  int& j = this->Private->Index[1];
  constexpr int FIRST = 0;

  // increment j
  ++j;
  // reset j, increment i if necessary
  if (!(j % numRows))
  {
    j = 0;
    ++i;
    // Compute next column's x offset
    switch (i)
    {
      case FIRST:
        break;
      default:
        this->Private->Offset[0] += this->Private->Increment[0] + this->Gutter[0];
        break;
    }
  }

  // Compute next row's y offset
  switch (j)
  {
    case FIRST:
      this->Private->Offset[1] = this->Private->Start[1];
      break;
    default:
      this->Private->Offset[1] += this->Private->Increment[1] + this->Gutter[1];
      break;
  }

  index = this->Private->Index;
  offset = this->Private->Offset;
}

//------------------------------------------------------------------------------
bool vtkChartMatrix::IsDoneWithTraversal()