[fxtf-drafts] [geometry] "Set pointVector to pointVector post-multiplied ..." (#589)

markusheukelom has just created a new issue for https://github.com/w3c/fxtf-drafts:

== [geometry] "Set pointVector to pointVector post-multiplied ..." ==
https://www.w3.org/TR/geometry-1/#transforming-a-point-with-a-matrix

> Set pointVector to pointVector post\-multiplied by matrix\.

I believe "post-multiplied" should either be "pre-multiplied" or be rephrased such that it is clear that the column vector is on the right side of the matrix when multiplied.  

(Multiplying vM, with v a [4x1] column vector and M a [4x4] matrix is not a valid vector-matrix multiplication. If v is a row-vector the product is defined by the result is incorrect).

 

Please view or discuss this issue at https://github.com/w3c/fxtf-drafts/issues/589 using your GitHub account


-- 
Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config

Received on Wednesday, 22 January 2025 10:43:12 UTC