Method UpdateGeometry

Charts/Core/vtkChartParallelCoordinates.cxx:464–514

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//------------------------------------------------------------------------------
void vtkChartParallelCoordinates::UpdateGeometry(vtkContext2D* painter)
{
  vtkVector2i geometry(this->GetScene()->GetSceneWidth(), this->GetScene()->GetSceneHeight());

  if (geometry.GetX() != this->Geometry[0] || geometry.GetY() != this->Geometry[1] ||
    !this->GeometryValid)
  {
    // Take up the entire window right now, this could be made configurable
    this->SetGeometry(geometry.GetData());

    vtkVector2i tileScale = this->Scene->GetLogicalTileScale();
    // if chart legend in not inlined, then we need to reserve space for it at the top right corner
    if (this->Legend->GetVisible() && !this->Legend->GetInline())
    {
      this->Legend->Update();
      constexpr int padding = 10;
      const vtkRectf rect = this->Legend->GetBoundingRect(painter);
      this->SetBorders(60 * tileScale.GetX(), 50 * tileScale.GetY(),
        (60 + static_cast<int>(rect.GetWidth()) + padding) * tileScale.GetX(),
        20 * tileScale.GetY());
    }
    else
    {
      this->SetBorders(
        60 * tileScale.GetX(), 50 * tileScale.GetY(), 60 * tileScale.GetX(), 20 * tileScale.GetY());
    }

    // Iterate through the axes and set them up to span the chart area.
    int xStep =
      (this->Point2[0] - this->Point1[0]) / (static_cast<int>(this->Storage->Axes.size()) - 1);
    int x = this->Point1[0];

    for (size_t i = 0; i < this->Storage->Axes.size(); ++i)
    {
      vtkAxis* axis = this->Storage->Axes[i];
      axis->SetPoint1(x, this->Point1[1]);
      axis->SetPoint2(x, this->Point2[1]);
      if (axis->GetBehavior() == 0)
      {
        axis->AutoScale();
      }
      axis->Update();
      x += xStep;
    }

    this->GeometryValid = true;
    // Cause the plot transform to be recalculated if necessary
    this->CalculatePlotTransform();
    this->Storage->Plot->Update();
  }
}

//------------------------------------------------------------------------------
void vtkChartParallelCoordinates::CalculatePlotTransform()