Re: [Flightgear-devel] glTF object centers

[Fernando G. L. <fer...@fg...>]

On 11/2/25 14:47, Richard Harrison wrote:
> I'm not exactly sure what isn't backwards compatible and what the 
> options are?

Many animations require a <center> tag. A good example is the rotation 
animation, which uses the <center> tag to specify the rotation center.

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).

Option 1: Replicate the previous behavior using (0,0,0) when no <center> 
has been specified.

Option 2: Keep the current glTF behavior, i.e. use the object center 
from Blender as the default center.

-- 
Fernando