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Re: [csswg-drafts] [css-transforms-1] Fix mistakes in Example 5 (closes #4767) (#5690)

From: afdw via GitHub <sysbot+gh@w3.org>
Date: Fri, 06 Nov 2020 19:33:05 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-723260762-1604691183-sysbot+gh@w3.org>
@mclegrand my PR was designed so that it corresponds to illustration. See http://web.cse.ohio-state.edu/~wang.3602/courses/cse5542-2013-spring/6-Transformation_II.pdf, there are 2 different ways to think about transformations. So I think my version is actually fully coherent if we think about it as post-multiplication / transform with respect to the local origin and basis. But [the canvas specification](https://html.spec.whatwg.org/multipage/canvas.html#current-transformation-matrix) implies the other variant (pre-multiplication / transform with respect to the global origin and basis). So what do you think? Which approach will be better?

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