Difference between revisions of "Talk:Keyframe"

Revision as of 10:32, 11 October 2007

"Also it is a mark to a special frame where the information of every parameter in the animation is stored there in order to be reused later."

No information is stored at all if you don't edit any parameter values. For example, make a scene, set the slider to 0s, arrange things, change the slider to 10s, arrange things again. You'll have a bunch of waypoints at 0s and 10s.

Then add keyframes at 2, 4, 6, and 8s, save the file and look at the saved .sif. You'll not see any information at all about the values of the parameters at 2, 4, 6, or 8s; you'll only see information about the value at 0s and 10s. The values at 2, 4, 6, and 8s are calculated using interpolation, just like all other points in time between 0s and 10s.

It's only when you edit parameters _after_ making a keyframe that information is stored about the value of the parameter at the keyframe(s). -- dooglus 20:11, 10 October 2007 (EDT)

The meaning of this phrase is that you are storing the current interpolated values of the keyframes although there isn't any waypoint there. In your exaple wou can make a duplicate of any of the keyframes at 2, 4, 6 or 8s for example at 12s and then the interpolated values are stored with the duplicated keyframe, so in a way or other, the information of the frame (by waypoints or its interpolation) is retrieved in the duplicated keyframe and taken form the original keyframe. It would be a very cool feature that you could make not a copy of the original keyframe but a reference of the original keyframe. It would allow modify the original keyframe and all the referece keyframes would be modified as well.--Genete 04:32, 11 October 2007 (EDT)

"A keyframe could live all the time without any waypoint but it stores the information of the values of the parameters on that specific frame"

There, you said it again. I suppose you can think of it as storing the information if you like. It doesn't really though. It's just a note that the information must be stored if anyone ever tries to change it by editing in 'neighboring' frames. -- dooglus 20:15, 10 October 2007 (EDT)

"If there is a waypoint there then the waypoint information is stored also (I have to verify this)"

Waypoints are all that is stored to record animation information. The only thing stored about keyframes are their positions in time (2,4,6,8s) and their names. -- dooglus 20:18, 10 October 2007 (EDT)

I verified that after upload that wiki page section. If you duplicate a keyframe that has waypoints on it then the duplicate keyframe creates exatclty the same waypoints as the original.--Genete 04:32, 11 October 2007 (EDT)

"Anyway the creation of a waypoint implies possible creation of keyframes"

I think that's probably just a typo, rather than a misunderstanding. The creation of waypoints can cause the creation of other waypoints at keyframes. It doesn't cause the creation of keyframes themselves - they are only made directly by the user. -- dooglus 20:21, 10 October 2007 (EDT)

Yes it is a typo.--Genete 04:32, 11 October 2007 (EDT)

I'm going to have to stop reading this for now, I'm too tired. It looks like a very good basis for the page on keyframes, and it well overdue. Well done! dooglus 20:21, 10 October 2007 (EDT)

Thanks for the review. This evenning - night I'll add more. --Genete 04:32, 11 October 2007 (EDT)