- From: Chris Lilley <chris@w3.org>
- Date: Fri, 6 Jan 2012 15:23:07 +0100
- To: Patrick Dengler <patd@microsoft.com>
- CC: FX <public-fx@w3.org>, Dean Jackson <dino@apple.com>
On Thursday, January 5, 2012, 8:49:58 PM, Patrick wrote: PD> For azimuth and elevation these are trickier and would like some PD> input. I?m not familiar enough with aural stylesheets to PD> understand the frequency or usage patterns of azimuth and PD> elevation. Ignore those CSS properties. No-one uses them. I say that with (a little) sadness since I played a part in specifying them, back in the day (and based on what VRML was doing at the time for positional audio) but aural stylesheets never took of or saw any adoption. New work in that area [1] takes a different approach (one that is more likely to be implemented), separates speech styling from other auditory styling and does not use azimuth or elevation. PD> While on the surface they appear to be innovative, I PD> don?t have the data to understand their usage pattern or PD> frequency. For the original use case see above. The frequency of use is easy - zero. PD> If they were used frequently enough I would propose a PD> name change to the SVG azimuth and elevation attributes in a way PD> that is backward compatible; and in fact that is the path I was by PD> default going to take. But if they are not, I would prefer to PD> preserve the SVG name. Which is actually used in content. PD> I think that of all of the filter PD> attributes, azimuth and elevation are the most relevant and prime PD> for transitions and animations and which is why I am hesitant to change their names. Right. PD> Option #1 PD> PD> Deprecate azimuth and elevation from aural stylesheets and PD> preserve azimuth and elevation as is in SVG. PD> PD> Issue: I have neither knowledge nor wisdom as to whether this is PD> wise, agreeable, feasible or reasonable J Its the only sensible option. [1] http://dev.w3.org/csswg/css3-speech/ -- Chris Lilley Technical Director, Interaction Domain W3C Graphics Activity Lead, Fonts Activity Lead Co-Chair, W3C Hypertext CG Member, CSS, WebFonts, SVG Working Groups
Received on Friday, 6 January 2012 14:23:48 UTC