Re: [Flightgear-devel] glTF object centers

[Richard H. <rj...@za...>]

> The glTF loader does not require filling out this <center> tag, 
> because by default it uses the object origin from Blender. This is not 
> backwards compatible because the previous behavior when a <center> tag 
> is not specified is to use the model origin (0,0,0).

Now I understand.

Lots of existing models, especially instruments, that have a single 
rotation will position the instrument so that the default <center> of 
0,0,0 works fine.

I would seem sensible (if possible) to keep the existing behaviour for 
AC3d models and use option (2) for glTF