Method RenderOpaqueGeometry

Rendering/Label/vtkLabeledTreeMapDataMapper.cxx:311–477

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//------------------------------------------------------------------------------
void vtkLabeledTreeMapDataMapper::RenderOpaqueGeometry(vtkViewport* viewport, vtkActor2D* actor)
{
  int i, numComp = 0, pointIdLabels, activeComp = 0;
  int numVertices;
  double x[3];
  vtkAbstractArray* abstractData;
  vtkDataArray *numericData, *tempData;
  vtkStringArray* stringData;
  vtkTree* input = this->GetInputTree();
  if (!input)
  {
    vtkErrorMacro(<< "Need input tree to render labels (2)");
    return;
  }

  vtkTextProperty* tprop = this->GetLabelTextProperty();
  if (!tprop)
  {
    vtkErrorMacro(<< "Need text property to render labels");
    return;
  }

  this->GetInputAlgorithm()->Update();

  // Input might have changed
  input = this->GetInputTree();
  vtkDataSetAttributes* pd = input->GetVertexData();
  // Get the treeMap info
  tempData = this->GetInputArrayToProcess(0, input);
  if (!tempData)
  {
    vtkErrorMacro(<< "Input Tree does not have box information.");
    return;
  }
  vtkFloatArray* boxInfo = vtkArrayDownCast<vtkFloatArray>(tempData);

  // Check to see whether we have to rebuild everything
  if (this->UpdateWindowInfo(viewport) || this->CurrentViewPort != viewport ||
    this->GetMTime() > this->BuildTime || input->GetMTime() > this->BuildTime ||
    tprop->GetMTime() > this->BuildTime)
  {
    vtkDebugMacro(<< "Rebuilding labels");

    // See if we have to recalculate fonts sizes
    if (this->CurrentViewPort != viewport)
    {
      this->CurrentViewPort = viewport;
      this->UpdateFontSizes();
    }

    // figure out what to label, and if we can label it
    pointIdLabels = 0;
    abstractData = nullptr;
    numericData = nullptr;
    stringData = nullptr;
    switch (this->LabelMode)
    {
      case VTK_LABEL_IDS: