Method ResetPropertiesToDefaults

Remoting/Views/vtkSMTransferFunctionProxy.cxx:1127–1174

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//----------------------------------------------------------------------------
void vtkSMTransferFunctionProxy::ResetPropertiesToDefaults(
  const char* arrayName, bool preserve_range)
{
  try
  {
    if (!preserve_range)
    {
      throw true;
    }

    vtkSMProperty* controlPointsProperty = GetControlPointsProperty(this);
    if (!controlPointsProperty)
    {
      throw true;
    }

    vtkSMPropertyHelper cntrlPoints(controlPointsProperty);
    unsigned int num_elements = cntrlPoints.GetNumberOfElements();
    if (num_elements == 0 || num_elements == 4)
    {
      // nothing to do, so restore without rescaling the range
      throw true;
    }

    std::vector<vtkTuple<double, 4>> points;
    points.resize(num_elements / 4);
    cntrlPoints.Get(points[0].GetData(), num_elements);

    // sort the points by x, just in case user didn't add them correctly.
    std::sort(points.begin(), points.end(), StrictWeakOrdering());

    double range[2] = { points.front().GetData()[0], points.back().GetData()[0] };

    this->RestoreFromSiteSettingsOrXML(arrayName);

    this->RescaleTransferFunction(range[0], range[1], false);
  }
  catch (bool val)
  {
    if (val)
    {
      this->RestoreFromSiteSettingsOrXML(arrayName);
    }
  }

  // Ensure the lookup table is rebuilt.
  this->UpdateVTKObjects();
}

//----------------------------------------------------------------------------
Json::Value vtkSMTransferFunctionProxy::ConvertLegacyColorMapXMLToJSON(vtkPVXMLElement* xml)