Best way to generate content on spatial meshes (Magic Leap & Hololens)

Hi

I'm playing around with Hololens and magic leap and would like to know the best approach to generate content on the spatial mesh?
For example: if you want some grass and rocks appear on the floor?

I'm considering doing raycasts into the space from the user's point of view, and where it hits the spatial mesh I could instantiate prefabs. But maybe there is a more intelligent and controlled way to do this?

Like this is my current setup:
- a particle system attached to the camera that shoots some particles and a scritp that creates gameobject when it hits the magic leap spatial mesh.. I guess it's fine as long as you don't need to many random objects.

 

Just curious, is that room with the furniture in it generated by magic leap? IE is that the spatial mesh? It's just so clean...

 

It's the spatial mesh from the magic leap emulator (they call it magic leap remote)

 

Oh, OK... so it's not the actual ML's spatial mesh. We actually have one here in the office but it hasn't gotten much interest from any of the devs.