Am 18.09.2010 15:14, schrieb Vo Minh Thu:
Hi,
This is a great goal! I've also been thinking in solidifying all
things 3D on hackage lately and forming a game and graphics strike
team. (The idea is that even if you're not interested in games, there
are still a lot of common things.)
Now it seems you see Collada as a good common starting point. I don't
know much about Collada and I can't really say if it is a good idea or
not. But by following the blender development mailing list, it seems
people don't really 'trust' it, in the sense that in practice, it is
still difficult to move things around between different programs
through Collada...
Maybe the format isn't properly implemented in some programs. I have
also experienced examples-files that didn't load.
But it think that collada is currently the best format and it's quite
powerful (shaders, physics, ...).
Also Collada is (I am not sure) just an interchange format and you
talk about data types. Can you be a bit more specific about what you
envision? Are they a direct representation of Collada?
Yes, pretty much a direct representation. But some things can be made
simpler. I.e. I replace the <instance_> tags with their value and have a
type garantee instead of trusting that a url referenced object exists.
The Collada people stress the point that its only an interchange format.
But Google is using it also for delivery (Google Earth).
If one can live with some seconds longer loading it is no problem.
By the way wonder why Collada isn't advocating binary XML?
That would make things faster.
You talk about combining the different libraries on Hackage, would you
like to do it through Collada?
Yes, the types . I currently don't see a better way.
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.
Cheers,
Thu
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
