  A visualization method based on Unity engine is proposed for the Jiangmen
Underground Neutrino Observatory (JUNO) experiment. The method has been applied
in development of a new event display tool named ELAINA (Event Live Animation
with unIty for Neutrino Analysis), which provides an intuitive way for users to
observe the detector geometry, to tune the reconstruction algorithm and to
analyze the physics events. In comparison with the traditional ROOT-based event
display, ELAINA provides better visual effects with the Unity engine. It is
developed independently of the JUNO offline software but shares the same
detector description and event data model in JUNO offline with interfaces.
Users can easily download and run the event display on their local computers
with different operation systems.
