When I use vtkLineWidget2, when it rotates, its handle does not follow its rotation

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1

When I use vtkLineWidget2, when it rotates, its handle does not follow its rotation

2

3

This is the core codeļ¼š
{ vtkNew line;

    line->SetInteractor(Interactor);
    line->SetCurrentRenderer(renderer);
    //mLine->SetPlaceFactor(1.0); 
    line->SetEnabled(1);
  
    
    vtkNew<vtkLineRepresentation> lineRep;
    lineRep->SetPoint1WorldPosition(picked);
    lineRep->SetPlaceFactor(1.0);

    vtkNew<vtkActorCollection> actors;
    lineRep->GetActors(actors);
    lineRep->SetLineColor(0, 1, 0);
    actors->InitTraversal();

    vtkNew<vtkTransform> transform;
     mLine2TransformMap[line.Get()] = transform.Get();
    while (vtkActor* actor = actors->GetNextActor())
    {
        actor->SetUserTransform(transform);
    }

    line->SetRepresentation(lineRep);
    line->On();

}
void CustomVtkInteractorStyleRuler::Rotate() {
if (!mPicked) {
CustomVtkInteractorStyleCtrlModel::Rotate();
int dx = this->Interactor->GetEventPosition()[0] - this->Interactor->GetLastEventPosition()[0];
int dy = this->Interactor->GetEventPosition()[1] - this->Interactor->GetLastEventPosition()[1];

    double angleX = dx * 0.5;  // Adjust sensitivity
    double angleY = dy * 0.5;
    for (auto kvp : mLine2TransformMap)
    {
        vtkTransform* transform = kvp.second;
        transform->PostMultiply();
        transform->RotateY(angleX);
        transform->RotateX(-angleY);
    }

}
else
{
    ......
}

}