I am building an application that has a lot of requirement of the user to understand the world coordinate system, so I want to add in the bottom left corner of the screen a widget that shows the world axes and their rotations.
I've succeeded in attaching the axes lines to the camera however as expected the parenting caused the axes' rotation to be bound to the camera's local rotation, not the world coordinate system.
So my question is how to I attach the axes to the camera, BUT make sure their rotation is locked to the world coordinate system?
Demo here: http://www.babylonjs-playground.com/#V2FN42#1