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Added spherical harmonics class #16187
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Well of course I support merging this in. :) |
Thanks @WestLangley |
Merged this for now so we can continue to press forward. :) |
Thanks @WestLangley! |
I'm sorry it takes me so long to understand all these things. I'm slowly getting there... this week I bumped into an issue where I needed |
We'll get there. :-) |
BTW I found this interesting SH paper that Unity 3D references: http://www.ppsloan.org/publications/StupidSH36.pdf |
Yes, that is referenced in a comment at the top of the file. :-) |
@bhouston and I worked on this in 2015, I think. I subsequently modified it.
The code is different from other versions of this file I have seen floating around the net, but in my testing, this code appears to work as expected.
I'll add this file to the build in a follow-up PR.