Retrieving Texture-coordinates from point (clientX, clientY)

[BR14Nx]

So far the documentation describes methods to retrieve materials, 3D-coordinates and normals ''from the input pixel coordinates relative to the screen''. However, I want to retrieve the UV-coordinates of the 3D-model to test live painting. (In my case the model has only one texture).
Is there already such method implemented or is there a workaround?

[elalish]

You're the second user to ask for this now, so we should probably just implement it. It shouldn't be hard. In fact, if you'd be up for making a PR, I'll be happy to review and merge it. You should be able to follow the code for positionAndNormalFromPoint, since three.js already returns the information you desire.