Soft bodies early preview, legal?

[topcomer]

Thanks,

Yes, the solver itself is based on Matthias Muller's work, mainly because its simple to implement and provide velocities which are needed for some future features.

it may sound stupid since I'm not a lawyer but is that legal?

[Erwin Coumans]

All effort is made to avoid patented work in the soft body implementation.

As far as we know, the implementation should be fine to use.
If you have any concerns about a specific parts, please bring it up here.
Thanks,
Erwin