[x3d-public] id attribute proposal

[Joe D Williams]

https://developer.mozilla.org/en-US/docs/Web/SVG/Element/script


----- Original Message ----- 
From: "Andreas Plesch" <andreasplesch at gmail.com>
To: "X3D Graphics public mailing list" <x3d-public at web3d.org>
Sent: Thursday, March 31, 2016 4:42 PM
Subject: Re: [x3d-public] id attribute proposal


> http://blogs.adobe.com/dreamweaver/2015/06/the-state-of-svg-animation.html
>
> has a lengthy discussion on SVG animation. It concludes that 
> animation via
> the DOM are in many cases the best option because SMIL is deprecated 
> and
> easily replaced by more powerful JavaScript.
>
> I was hoping that the article goes into how collisions between SMIL, 
> CSS
> and DOM based animation are resolved but it does not. Apparently it 
> is not
> a concern.
>
> Andreas
>
> It turns out that SVG uses the SMIL animation model:
>
> https://www.w3.org/TR/smil-animation/
>
> It defines that animation does not affect the DOM value of an 
> animated
> property but a separate presentation value which is only accessible 
> to the
> animation runtime, and not the DOM. The specification does not go 
> into what
> values are used for rendering but the idea is certainly that the
> presentation value is used. This would make it necessary for a 
> renderer to
> keep track of what attributes are currently animated by SVG and 
> which ones
> are not. Since the animate element is the only possible way to do 
> this in
> SVG, this is feasible. For the richer X3D scene graph, this would be 
> much
> harder and does not seem like a good model to follow at first 
> glance.
>
> Andreas
>


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