Where did "Always use Y-Up axis" in Xcode 8 go?

Question

We used to have an option "Always use Y-Up axis" toggle in Xcode (until Xcode 7 at least, I think). It's gone in current Xcode 8.2.1, and probably gone since 8.1 or even 8.0. Why? Or is it hiding somewhere else? Any workarounds?

Update: I found a related quote from a WWDC speech, way back in 2014:

The way you add 3D assets to your game is just SceneKit asset catalogs.

SceneKit asset catalogs are new feature in Xcode 6, SceneKit asset catalogs are new feature in Xcode 6, and they allow you to organize and optimize your 3D assets.

The structure of SceneKit asset catalogs is preserved when they are copied into your target.

Also, they automatically track files that are added to them or removed from them on disc.

They are really convenient because they can optimize your 3D assets for you.

For instance, they help with up axis conversion.

SceneKit follows the up axis conversion, which means that the positive y axis is the one that looks up.

This is a convention that is followed by many other applications and frameworks, but some exporters do things differently and use a z up axis convention.

With SceneKit asset catalogs, you don't have to think about that.

We automatically and transparently convert all the animations and geometries in your scene so that they follow the up axis convention.

Taken from http://asciiwwdc.com/2014/sessions/610 Video at https://developer.apple.com/videos/play/wwdc2014/610/

The above seems to describe the scene kit asset catalog when it was introduced. It doesn't actually answer my question here; why that feature is removed from current Xcode. I can also confirm that no conversion happens behind the scenes. A model exported from Blender is always going to move closer to or away from camera if its Y position is changed. At run-time it is the same.

Answer 1

In Xcode 8, you can Ctrl-click on the .scnasset folder and Open As > SceneKit Catalog. If you make any changes, it will write out a Settings.json file. This may be what you are looking for.