- From: Sigurd Lerstad <sigler@bredband.no>
- Date: Tue, 2 Sep 2003 14:25:28 +0200
- To: <cogit@ludicrum.org>, <www-svg@w3.org>, <www-smil@w3.org>
Hello, a long time since I asked this, but I haven't worked on it since so... I just need a simple clarification. You are talking about intervals and not the instance time lists? The spec is pretty clear about how to handle those. thanks again, -- Sigurd Lerstad > > Hi - > > I will jump in since I worked on the SMIL Timing stuff. Yes, you should keep > a list of historical intervals until you are reset (assuming you support > time containment at some point). Hyperlink navigation is an entirely valid > means of interaction and should not be dismissed as "just seeking". The > ability to seek backwards can be crucial to authors in some cases, and this > is why it was specifically included in SMIL 2 timing. The combination of > hyperlinking and indeterminate timing (e.g. event based timing) is somewhat > complex, but it is consistent. For the SVG 1 case without time containers, > it is actually fairly simple. > > Climbing out on a limb, I will comment that if you are considering not > keeping the historical intervals, you may be treading close to some more > serious problems in the implementation. If you are just considering a minor > optimization to toss out a few small objects, fine. If you are considering > departing from the model described in the spec, you are likely headed for > trouble. > > If you have other questions about the SMIL timing model, I would happy to > help clarify the spec. I know it is not entirely obvious - it is a spec and > not a tutorial. In some places, we attempted to clarify precisely what we > meant, but the detail can be bewildering on the first read. > > Good luck with it - Patrick > > > -----Original Message----- > > From: www-smil-request@w3.org [mailto:www-smil-request@w3.org]On Behalf > > Of Sigurd Lerstad > > Sent: Tuesday, April 29, 2003 1:14 AM > > To: www-svg@w3.org; www-smil@w3.org > > Subject: animations and intervals > > > > > > > > Hello, > > > > Reading up on intervals and current interval etc. in the SMIL > > timing model. > > > > Is it a good idea to keep a history of all the intervals created for an > > animation element? I'm looking into seeking backwards, and > > though the rules are not completely clear to me yet, is keeping a list of > > already happened intervals a good idea (or even necessery) to > > seek backwards? It is my understanding that this is not necessary when > > playing normally and when seeking forwards. > > > > As Thomas E Deweese said, it's a good thing to refer to the specs > > and saying > > why I think the spec isn't clear when asking a question, however, all this > > is very fuzzy at the moment, and I don't have a complete understanding of > > the spec yet, I'm simply asking for implementation advise on > > wether keeping > > a list of history intervals for the sake of seeking backwards is > > a good idea > > or not, a simple yes or no from someone with implementation > > experience will > > do, so I know I'm on the right track. > > > > thanks, > > > > -- > > Sigurd Lerstad > > > >
Received on Tuesday, 2 September 2003 08:23:01 UTC