You would usually need a 3D engine to do that. There are lots of products which can render 3D models including system libraries on a few systems, open source libraries and commercial 3D engines like Unity3D which we have official support.
Integrating such engines (in the samples only) would do the job, but it will also make the samples a little bit huge while the current samples would show API usages in the simplest way.
We are considering some changes, and your opinions are appreciated.
Would a sample with an open sourced 3D engine or 3D library be helpful?
It will give you a reference of how to make EasyAR Sense work together with one of tons of 3D libraries in the world. But it is an impossible work to choose a 3D library for everyone's flavor. So you may still use a different 3D library when it comes to commercial decision, with no samples.