Oglmodel

[CorentinLanguepin]

Finalizing with changes mostly on scene and contactheader

[damienmarchal]

Hi @Younesssss and @CorentinLanguepin

Thanks for the PR. I do not merge it directly as this is currently part of a larger process composed:

• adding to SofaPython3 the missing functions to smooth the step between sofapython & sofapython3
• split what was in STLIB in two libraries :
  • SPLIB:
  • STLIB:
• For both libraries, adding unittest so that can be integrated into the sofa CI stack.
• For each library have a:
  • SPLIB/splib and SPLIB/splib3,
  • STLIB/stlib and STLIB/stlib3, splib/stlib will focus on implementing exactly the same feature as before but on top of SofaPython3 while the
    splib3/stlib3 version will be focused on providing new features or alternative design using the new special features of SofaPython3. The underlying idea of all that is to maximize the backward compatibility.

[EulalieCoevoet]

Hi Damien,

As you said this is a large process and a work in progress. Meanwhie, some of us are using the branch sofaPython3 as a temporary solution to have things working.

This PR is actually to merge the work of Corentin into the branch sofaPython3, and I don't see why we souldn't. I'll start to review the changes if it's okay with you.

[EulalieCoevoet]

I've made the changes and tested them. It's all good for me.