RorrKonn posted at 10:14PM Sun, 07 February 2016 - #4253763

Antonia is Public Domain but if we modify her .can we copyright n sell are modify part ?

Public Domain ,CopyRights ,Patents are complicated matters of law.

the patents/US20150002517 is dated 2013 dual quaternion rigging math has been around a lot longer. Might be older then the invention of CGI even.

I don't recall what license Antonia is published under, but I recall that you can sell derivative product. One can buy all sorts of public domain books at any bookstore; anything from before 1923 in the US.

The math has been around for over a century, which is why Shane commented about Algebra.....

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