Is it possible to get the order of encoded points?

[lilleyse]

Using the C++ API is it possible to get the order of encoded points?

We have generic attributes that we don't want to store in the draco buffer and we need a way to reorder them in case points get ordered differently during encoding. Ideally the encoder would provide an array of the new point indices.

Workarounds that we're considering:

1. Use POINT_CLOUD_SEQUENTIAL_ENCODING. We're trying to avoid that.
2. Add an index attribute alongside position and other attributes, encode points, decode points, get new point indices from the index attribute and reorder non-draco attributes, re-encode without index attribute. I'm not sure if this actually works or is practical.

Is there another way that we're missing?

[lilleyse]

This was originally a blocker for an early version of CesiumGS/glTF#1 but we changed the design and this issue is no longer relevant.

I'm going to close this issue for now, but am happy to reopen if it's relevant to others.