Comment by mncharity

Sorry, I've not seen such.

And my own stuff was so very limited and crufty, before I rather burned out on the yak shaving of it all. Though two requests for demos just this evening... sigh.

Perhaps picture the cylindrical "big screen" someone here mentioned. Run 3D programs like CAD in some of the windows. Control the window manger with keystrokes. Use a trackpad, a mouse, a 3D mouse. These inputs aren't tightly coupled to the rendered 3D space. Add a 6DOF controller. There's still no need to introduce a tight coupling - it can sit beside your mouse, or on your knee, and twitch. Discard the gaming objective of immersion, and show the outside world. Use a non-standard VR rendering stack, or AR, so that's performant. Open up the HMD horse blinders. Add some "comfort mode" tricks, and now the outside world is being used for balance, and the rendered world is freed to be bizarre. When your head moves, move the cylinder twice as fast, to reduce the need for head motion. Turn it with keys or mouse and no head motion. It's not a real cylinder - there's no reason when you turn it and turn it back, the same thing has to be there - it can be whatever you want, whatever is helpful. The motivation for a surface is coplanarity for optical scanning, and living in some hardware/wetware sweet spot. But one is a task-specific constraint, and both are local to the region currently shown, not global constraints. So punt the cylinder, and use an arbitrary aphysical topology. So now, while do you have a 3D visual display, and 3D HIDs, the contents and inputs are no more constrained to some imagined reality than in any usual window manager an apps. Choosing how much resemblance to reality to exhibit, as with scrolling "physics", is simply a UI design choice. ... Ah well - it's late - FWIW.