NLA editor keeps resetting my extrapolation mode every time I edit a strip in the timeline #29869

New Issue

Chad Gleason · 2012-01-12T18:57:19+01:00

Chad Gleason commented

2012-01-12 18:57:19 +01:00

%%%If you have 2 stacked clips, each on their own track in the NLA editor, with extralopation set to hold on both (under active strip, not animation data), then slide the top clip over to another location on the timeline, the extrapolation mode will automatically reset to "hold forward" every time.

I'm using r43198 on OSX snow leopard.

%%%

%%%If you have 2 stacked clips, each on their own track in the NLA editor, with extralopation set to hold on both (under active strip, not animation data), then slide the top clip over to another location on the timeline, the extrapolation mode will automatically reset to "hold forward" every time. I'm using r43198 on OSX snow leopard. %%%

Chad Gleason commented

2012-01-12 18:57:19 +01:00

Changed status to: 'Open'

Chad Gleason commented

2012-01-12 19:11:59 +01:00

%%%After some more testing this seems to happen to all the upper tracks on multiple objects all at once if I edit even one clip. %%%

Brecht Van Lommel commented

2012-01-13 15:00:25 +01:00

%%%Please attach a simple .blend file to demonstrate the issue, thanks.%%%

Chad Gleason commented

2012-01-13 17:01:38 +01:00

%%%I'm attaching a blend. If you move either of the top 2 strips (all are set to hold), both of the top strips will change their extrapolation to "hold forward". If you move the bottom strip, then the the bottom and top will reset to "hold forward", but not the middle.%%%

Chad Gleason commented

2012-01-13 17:22:25 +01:00

%%%Ugh, I can't seem to upload a file? It keeps telling me I'm "missing parameters", which is strange since I just uploaded a file for another bug not 5 mins ago. Does anyone have an e-mail I can send the file directly to? Otherwise, this can be re-created easily. Just make a few nla layers with a box, set all the layers to "hold" and then move an upper strip on the timeline. It should show what I'm saying. But i can still send the file if the tracker will just let me.... Any ideas on what I'm doing wrong here? Thanks!%%%

Chad Gleason commented

2012-01-13 17:23:33 +01:00

%%%Ok, nevermind. File attached. :)

I guess I need to include a comment with a file at the same time? Sorry for the confusion.%%%

%%%Ok, nevermind. File attached. :) I guess I need to include a comment with a file at the same time? Sorry for the confusion.%%%

Brecht Van Lommel commented

2012-01-13 18:41:39 +01:00

%%%The attachment system is not great, but yes adding a comment as well usually makes it work.

Assigning bug to Joshua. This overwriting seems to be happening intentionally in BKE_nla_validate_state, I don't know enough about the NLA to judge if this is a bug or not.%%%

%%%The attachment system is not great, but yes adding a comment as well usually makes it work. Assigning bug to Joshua. This overwriting seems to be happening intentionally in BKE_nla_validate_state, I don't know enough about the NLA to judge if this is a bug or not.%%%

Joshua Leung commented

2012-01-22 05:19:11 +01:00

%%%The intention behind the code here is to make sure that only the very first strip in that animdata block (chronologically) gets to extrapolate backwards. This is to prevent situations where a single strip up the top blocks out everything below it occurring before it lower down in the stack. Now, this is only really a problem when the channels in each track are the same, AND we're using "replace" mode.

So perhaps some tweaks are in order here. Will fix after dealing with another change I've got lurking in my code base for months now :)%%%

%%%The intention behind the code here is to make sure that only the very first strip in that animdata block (chronologically) gets to extrapolate backwards. This is to prevent situations where a single strip up the top blocks out everything below it occurring before it lower down in the stack. Now, this is only really a problem when the channels in each track are the same, AND we're using "replace" mode. So perhaps some tweaks are in order here. Will fix after dealing with another change I've got lurking in my code base for months now :)%%%

Joshua Leung commented

2012-01-22 05:40:10 +01:00

%%%Fix in svn. r43597%%%

Joshua Leung commented

2012-01-22 05:40:11 +01:00

Changed status from 'Open' to: 'Resolved'

Joshua Leung closed this issue

2012-01-22 05:40:11 +01:00

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NLA editor keeps resetting my extrapolation mode every time I edit a strip in the timeline #29869