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Re: [css3-3d-transforms] rotations, changes needed...

From: Daniel Glazman <daniel.glazman@disruptive-innovations.com>
Date: Sat, 26 Nov 2011 10:11:03 +0100
Message-ID: <4ED0AD27.6000305@disruptive-innovations.com>
To: www-style@w3.org
Le 25/11/11 20:46, L. David Baron a écrit :

> Does anything define what it means to be clockwise around an axis?
> Clockwise and counterclockwise make sense in terms of a plane and an
> observer on one side of that plane, but I don't know what they mean
> in terms of an axis.  Can we use the right-hand rule instead?  Or
> can we define that the relevant axis points from the plane to the
> observer or vice-versa?

The latter. Defining ckw rotation around an axis is trivial: place an
observer on a plane orthogonal to that axis, looking towards positive
axis values; then rotate the plan clockwise for the observer around the

Received on Saturday, 26 November 2011 09:11:28 UTC

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