W3C home > Mailing lists > Public > public-css-archive@w3.org > November 2017

Re: [csswg-drafts] [css-transforms-1] Error in prose describing order of multiple transform function

From: Simon Fraser via GitHub <sysbot+gh@w3.org>
Date: Mon, 06 Nov 2017 02:33:30 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-342031005-1509935609-sysbot+gh@w3.org>
I'm lost in row-major vs. column-major and pre- vs post-multiply confusion here. I think, if we consider the matrices to be in column-major order (which is indicated by the order of arguments to matrix() and matrix3d() that "concatenate" means post-multiply.

I'm also confused by this figure in SVG: https://www.w3.org/TR/SVG/images/coords/MatrixMultiply.png where it talks about mapping from new to old coordinate systems with the column vector on the right.

-- 
GitHub Notification of comment by smfr
Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/909#issuecomment-342031005 using your GitHub account
Received on Monday, 6 November 2017 02:33:32 UTC

This archive was generated by hypermail 2.3.1 : Monday, 6 November 2017 02:33:32 UTC