Method ComputeCurrentElementSceneRect

Charts/Core/vtkChartMatrix.cxx:163–193

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//------------------------------------------------------------------------------
vtkRectf vtkChartMatrix::ComputeCurrentElementSceneRect(
  const vtkVector2i& index, const vtkVector2f& offset, const vtkVector2f& increment)
{
  const std::size_t flatIndex = this->GetFlatIndex(index);
  vtkVector2f resize(0., 0.);

  if (this->SpecificResize.find(index) != this->SpecificResize.end())
  {
    resize = this->SpecificResize[index];
  }

  const float x =
    offset[0] + this->Gutter.GetX() * this->Private->GutterCompensation[flatIndex][vtkAxis::LEFT];
  const float y =
    offset[1] + this->Gutter.GetX() * this->Private->GutterCompensation[flatIndex][vtkAxis::BOTTOM];

  vtkVector2i& span = this->Private->Spans[flatIndex];
  float left = x + resize.GetX();
  float bottom = y + resize.GetY();
  float width = increment.GetX() * span.GetX() - resize.GetX() +
    this->Gutter.GetX() *
      (span.GetX() - 1 + this->Private->GutterCompensation[flatIndex][vtkAxis::RIGHT]);
  float height = increment.GetY() * span.GetY() - resize.GetY() +
    this->Gutter.GetY() *
      (span.GetY() - 1 + this->Private->GutterCompensation[flatIndex][vtkAxis::TOP]);

  width = vtkMath::ClampValue(width, 0.f, VTK_FLOAT_MAX);
  height = vtkMath::ClampValue(height, 0.f, VTK_FLOAT_MAX);

  return { left, bottom, width, height };
}

//------------------------------------------------------------------------------
void vtkChartMatrix::InitLayoutTraversal(