Very useful feature, that should help with making animatable buttons etc..
When extending FlareControls and overriding setViewTransform, one should add call to "super.setViewTransform(viewTransform);" in order to make it work.
Example:
wrap your FlareActor with GestureDetector. add onTapDown Event, and ask the flare controller which nodes were clicked.
			GestureDetector(child: FlareActor(
                            "assets/Teddy.flr",
                            shouldClip: false,
                            alignment: Alignment.bottomCenter,
                            fit: BoxFit.contain,
                            controller: _teddyController,
                          ), onTapDown : (details){
                            print (_teddyController.deepHitTest(details.globalPosition));
                          }
                          )