SphereSensor { 
    exposedField SFBool     autoOffset        TRUE
    exposedField SFBool     enabled           TRUE
    exposedField SFRotation offset            0 1 0 0  # [-1,1],(-,)
    eventOut     SFBool     isActive
    eventOut     SFRotation rotation_changed
    eventOut     SFVec3f    trackPoint_changed
  }