Method SetLabels

Rendering/Annotation/vtkAxisActor.cxx:1115–1150

------------------------------------------------------------------------------ Sets text string for label vectors. Allocates memory if necessary. ------------------------------------------------------------------------------

// Sets text string for label vectors.  Allocates memory if necessary.
//------------------------------------------------------------------------------
void vtkAxisActor::SetLabels(vtkStringArray* labels)
{
  //
  // If the number of labels has changed, re-allocate the correct
  // amount of memory.
  //
  int numLabels = labels->GetNumberOfValues();
  if (numLabels < 0)
  {
    vtkErrorMacro(<< "Number of labels " << numLabels << " is invalid");
    return;
  }
  if (this->NumberOfLabelsBuilt != numLabels)
  {
    this->LabelProps.clear();
    this->LabelProps.reserve(numLabels);

    for (int i = 0; i < numLabels; i++)
    {
      auto currentLabel = std::make_shared<vtkTextActorInterfaceInternal>();
      currentLabel->SetAxis(this);
      this->LabelProps.push_back(currentLabel);
    }
  }

  //
  // Set the label vector text.
  //
  for (int i = 0; i < numLabels; i++)
  {
    vtkTextActorInterfaceInternal* currentLabel = this->LabelProps[i].get();
    currentLabel->SetInputText(labels->GetValue(i));
  }
  this->NumberOfLabelsBuilt = numLabels;
  this->LabelBuildTime.Modified();
}

//-----------------------------------------------------------------------------*
// Creates Poly data (lines) from tickmarks (minor/major), gridlines, and axis.