How to read this code?

[JerryPW]

Hi! Thanks for your great work and it's very impressive!
However, it seems this repo is a plugin of nerfstudio, so there isn't a clearly pipeline for me to follow and understand the whole code, i.e. no train.py that start up training. Therefore, is there any other version of the code available for simple reading or could you please explain where the main structure (how to calculate the volume and how to determine the level) has been implemented in this repo. It will be better if it is convenient to provide a k-plane version of the pyNeRF.

Looking forward to your reply and this is my email: li-hao@sjtu.edu.cn