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[csswg-drafts] Make Rotation Less Weird

From: Simon Fraser via GitHub <sysbot+gh@w3.org>
Date: Thu, 12 Jan 2017 17:11:23 +0000
To: public-css-archive@w3.org
Message-ID: <issues.opened-200425967-1484241082-sysbot+gh@w3.org>
smfr has just created a new issue for 
https://github.com/w3c/csswg-drafts:

== Make Rotation Less Weird ==
https://www.w3.org/mid/CAGTfzwT8M0_c1Wnk5To1zRVtGXtuLzXbjkpDS55DC6T9dUTfKQ@mail.gmail.com

Hi list,

Here's how we currently define quaternion SLERPing during 
interpolation:
http://dev.w3.org/csswg/css-transforms/#interpolation-of-decomposed-3d-matrix-values

When quatA = [0, 1, 0, 0] and quatB = [0, -1, 0, 0], this has the
unfortunate side effect of setting product to -1, which means the
definition of 'w' has 0 in the denominator.

What do?

Cheers,
    -Shane

Please view or discuss this issue at 
https://github.com/w3c/csswg-drafts/issues/896 using your GitHub 
account
Received on Thursday, 12 January 2017 17:11:29 UTC

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