Is it possible to extend the "Kind" registry in Omniverse?

[john172]

The Pixar documentation pointed to by the Omniverse documentation regarding the “Kind” property discusses the ability to extend the “Kind” registry.

https://graphics.pixar.com/usd/release/api/kind_page_front.html

I have been unable to find where to edit the Kind Registry in Omniverse. My search has lead me to:

• omni.usd.libs>pxr>Kind>kind.pyd, which is a binary file, and I don’t think there is a means for me to edit it.

• omni.usd.libs>pxr>Kind>init.pyi, which has definitions for the Classes: Registry and Tokens. This looks like a potential file to access the Kind definitions, but I think it is just a python wrapper pointing to the C++ compiled binary.

I would like to extend the base kinds to have unique Kinds in the hierarchy in Omniverse. Is this possible? If so, can anyone help point me in the right direction?

[mati-nvidia]

Hi @john172. I would follow the similar steps to what we recommend for custom schema extensions: USD Schema — kit-sdk 103.1 documentation

I put together a sample extension based on the example provided in the Kind documentation: GitHub - mati-nvidia/custom-kinds-example: An example Omniverse Kit Extension showing how to add custom USD Kinds.

Let me know if you have any more questions.

[john172]

Thank you mati! This worked well for me.