How to use Plantgl for modeling apical meristem?

[330415Lzy]

Hi @fredboudon, and @pradal, I want to use PlantGL to model a 3D apical meristem and add a gene network into it, but I can't find how to model a tissue using it. Could you please tell me where I can find the guide to do that (example in the picture in your paper)

Thanks!

Best,
Ziyi