On Sun, May 3, 2009 at 12:56 AM, Tillmann Vogt wrote: Now that you mention it. I just looked through haskell hierachical
libraries and there seems to be no standard data types for vector math. Am I
getting something wrong or is every library that is using linear algebra
stuff using its own data types? So if I use a numeric library for matrices
inside HOpenGL I have to convert around? I think it would be nice to have data types and functions for dot produkt,
scalar product, norms, ...
together with HOpenGL types. Currently I am trying to embed a triangulation library from a ten year old
diploma thesis (http://www.dinkla.net/fp/cglib.html) in my libary (I know
that glu has tesselation). The author has developed a quite big and abstract
type structure for all sorts of computer graphics algorithms and I didn't
wanted to copy this into my library just for triangulation. But it is
reasonable. It could be combined with HOpenGL types to maybe
Data.VectorMath or Data.LinearAlgebra . I would favour the second. The problem is, in my opinion, that the design space of linear algebra
libraries is big and complex;
thus I don't think a "canonical" linear algebra library is a good idea.
There are at least 4 linear algebra libraries on Hackage already:
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hmatrix
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/vector-space
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Vec
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/vect
and they are all very different, and I can easily imagine the usefulness of
some more.
Self-advertisement: The last of the above four is designed especially for
graphics use,
in particular with OpenGL; but I'm not really satisfied with its current
state, so feedback
is very welcome!
Balazs