[Haskell-cafe] Uniting graphics libraries

Tillmann Vogt Tillmann.Vogt at rwth-aachen.de
Sat Sep 18 10:52:21 EDT 2010

  Am 18.09.2010 16:16, schrieb Vo Minh Thu:
> Ok. I'll learn more about Collada then. Is your code already available
> somewhere?

I will upload it in a few days on hackage. It is not finished yet.

> Still, Collada seems to be on a far end of the spectrum of what could
> be unified. I mean, say your animation has to be rendered by some
> Haskell code, do you wish to go through Collada or that your animation
> code and the rendering code share some other data structures than
> Collada (Or maybe Collada is just a first step?) ? If the later, it
> would be useful to share what those other data structures should be.

Animations in Collada are streams of interpolated floats that are 
as time or output (i.e. angle of a rotation). The output is then 
channeled to the tags of the nodes.
One can do quite a lot with this. At the moment I can't image what else 
one could do.

>>> When I said I thought about solidifying things lately, I was thinking
>>> to the problem you describe but at a lower level: for instance there
>>> are many different representations for 3D vectors and transforms. Is
>>> it also a concern for you?
>> This is a problem. But I would accept a majority vote. At the moment I would
>> use the same vector library as gpipe.
> Why a majority vote? Maybe we can do better: state some desired
> properties, benchmark the existing libraries and see if something
> fits?
> Are there other people interested in unifying the efforts here?
> Cheers,
> Thu

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