merge multible inputs

[arpu]

Hey,

would it be possible to have multiple inputs and merge all?
my use case is export a .vox file in MagicaVoxel to .obj Files -> multible .obj files
would be good to have a way to input all this in gltfpack and get all merged in one glb

[arpu]

found a good solution for this with @donmccurdy https://github.com/donmccurdy/glTF-Transform

[zeux]

Yeah I think it's probably better to use other tools for merging for now. We've discussed this on some other issue at some point, the summary is:

• There are some technical barriers in gltfpack implementation wrt making merging possible, as parts of the input tree are reused directly and merging complicates the situation with indexing
• While it would be easy to support merging just for .obj, gltfpack is a glTF-focused tool and this divergence in implementation wouldn't be desirable
• Additionally, merging often requires other scene transforms such as placing the objects at different locations, combining materials into variants, etc
• Some use cases want to merge multiple files as different scenes, not just as objects within one scene.

Depending on the requirements you could use https://github.com/donmccurdy/glTF-Transform, https://github.com/facebookincubator/glTFVariantMeld or other glTF processing tools before handing the input to gltfpack; gltfpack will try its best to give enough options to preserve semantics (e.g. it now preserves multiple scenes, preserves variants, etc.)