There is also my little library 
<http://package.elm-lang.org/packages/Zinggi/elm-webgl-math/latest>, you 
might find it useful.

On Thursday, 4 May 2017 15:56:05 UTC+2, Rupert Smith wrote:
>
> I need to implement some 2d geometry transformations, and would like to 
> use 3x3 matrices for this. Does anyone have some experience or recommend 
> one library over another? I don't really need maximum performance at this 
> stage, the drawing I am rendering will be relatively static and not consist 
> of a huge number of parts. The output will be SVG.
>
> There is elm-community/linear-algebra, but that only has 4x4 matrices and 
> is a native module, making it a little harder to add to and publish my own 
> additions. A 4x4 can always be used where a 3x3 can though.
>
> There is eeue56/elm-flat-matrix, which sounds as though it will be fairly 
> efficient as a pure Elm implementation.
>
> There is benansell/elm-geometric-transformation, which does what I need 
> for now. It hides the internal representation and I just had a peek at the 
> source and it is not a 3x3 matrix but 2x2 with transformation scalars held 
> separately. Might be nice to work more directly with matrices from the 
> point of view of being able to extend the work and I am pretty familiar 
> with linear algebra.
>
> Any others or thoughts?
>

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