Method SetNumberOfEntries

Rendering/Annotation/vtkLegendBoxActor.cxx:220–373

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
void vtkLegendBoxActor::SetNumberOfEntries(int num)
{
  if (num == this->NumberOfEntries)
  {
    return;
  }

  else if (num < this->Size)
  {
    this->NumberOfEntries = num;
  }

  else // allocate space
  {
    int i;

    // Create internal actors, etc.
    vtkDoubleArray* colors = vtkDoubleArray::New();
    colors->SetNumberOfComponents(3);
    colors->SetNumberOfTuples(num);
    vtkTextMapper** textMapper = new vtkTextMapper*[num];
    vtkActor2D** textActor = new vtkActor2D*[num];

    // Symbol
    vtkPolyData** symbol = new vtkPolyData*[num];
    vtkTransform** transform = new vtkTransform*[num];
    vtkTransformPolyDataFilter** symbolTransform = new vtkTransformPolyDataFilter*[num];
    vtkPolyDataMapper2D** symbolMapper = new vtkPolyDataMapper2D*[num];
    vtkActor2D** symbolActor = new vtkActor2D*[num];

    // Icon.
    vtkPlaneSource** icon = new vtkPlaneSource*[num];
    vtkTransform** iconTransform = new vtkTransform*[num];
    vtkTransformPolyDataFilter** iconTransformFilter = new vtkTransformPolyDataFilter*[num];
    vtkPolyDataMapper2D** iconMapper = new vtkPolyDataMapper2D*[num];
    vtkTexturedActor2D** iconActor = new vtkTexturedActor2D*[num];
    vtkImageData** iconImage = new vtkImageData*[num];

    // copy old values
    for (i = 0; i < this->NumberOfEntries; i++)
    {
      colors->SetTuple(i, this->Colors->GetTuple(i));
      textMapper[i] = this->TextMapper[i];
      textMapper[i]->Register(this);
      textActor[i] = this->TextActor[i];
      textActor[i]->Register(this);

      // Symbol.
      symbol[i] = this->Symbol[i];
      if (symbol[i])
      {
        symbol[i]->Register(this);
      }

      transform[i] = this->Transform[i];
      transform[i]->Register(this);

      symbolTransform[i] = this->SymbolTransform[i];