Renderer atom position

Hi,

I am working on a project that uses Indigo renderer to render molecule images. I am wondering if there are any ways to access the atom/bond coordinates in the image, e.g. atom 0 is located at pixel (50, 60). The coordinates returned from `atom.xyz()` are correct in terms of their relative positions, but I couldn't find a way to align them to the exact pixels.

I understand there might not be an API for it, but could you please provide some suggestions that how I can get the pixel coordinates, or which part of the code I should be looking into. Thank you!