[Haskell-cafe] typeclass for transformation of Euclidean points

[Christopher Howard]

Hi. What I'd like to have for a program I am working on is a generic 
typeclass for objects that can be treated like points on a 2D plane, and 
a few simple transform functions (e.g., addition, rotation around an 
origin) which I could combine to make more complex transformations. Of 
course, it would be trivial to do this myself, but it seems like the 
sort of thing somebody would have thought of already. Does anybody know 
of a package providing this? (I didn't see an obvious one when searching 
with hoogle.)

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