NLA Strip influence slider doesn't respond to autokey correctly. #76549

New Issue

Tal Hershkovich · 2020-05-08T14:43:14+02:00

Tal Hershkovich commented

2020-05-08 14:43:14 +02:00

System Information
Operating system: Win 10
Graphics card: GeForce GTX 1070

Blender Version
Broken: 2.82 Release

Short description of error

The Influence property of the NLA's strip, has some strange behavior and something that might be a bug.
This was reported before in #63865, which was supposedly resolved, but the problem still exists

When changing the value of the influence slider with the autokey turned on, it jumps back to its previous value and does not update to the new one. After repeating it 2 or 3 times it applies the value. When applying the value numerically it works fine, it seems to be a problem with the update of the slider.
Moreover, when turning influence on it always adds a keyframe to the first frame of the action (where the action is on the timeline ). It sets a keyframe with the value 0, instead of the current value.

Exact steps for others to reproduce the error

Open attached file
Select one of the Action strips.
In the Sidebar, go to {nav Strip > Active Strip} and turn on Animated Influence. (Note that a keyframe is added to the first frame of the action).
Go to a new frame with the Autokey turned on, change the value of the influence slider.
Go to a new frame - the value should jump back to the previous one

I've made a short video which describes the errors
https://www.youtube.com/watch?v=Sh5MwYCH9T4

Sample file:

Influence_bugreport.blend

**System Information** Operating system: Win 10 Graphics card: GeForce GTX 1070 **Blender Version** Broken: 2.82 Release **Short description of error** The Influence property of the NLA's strip, has some strange behavior and something that might be a bug. This was reported before in #63865, which was supposedly resolved, but the problem still exists When changing the value of the influence slider with the autokey turned on, it jumps back to its previous value and does not update to the new one. After repeating it 2 or 3 times it applies the value. When applying the value numerically it works fine, it seems to be a problem with the update of the slider. Moreover, when turning influence on it always adds a keyframe to the first frame of the action (where the action is on the timeline ). It sets a keyframe with the value 0, instead of the current value. **Exact steps for others to reproduce the error** - Open attached file - Select one of the Action strips. - In the Sidebar, go to {nav Strip > Active Strip} and turn on `Animated Influence`. (Note that a keyframe is added to the first frame of the action). - Go to a new frame with the Autokey turned on, change the value of the influence slider. - Go to a new frame - the value should jump back to the previous one I've made a short video which describes the errors https://www.youtube.com/watch?v=Sh5MwYCH9T4 Sample file: [Influence_bugreport.blend](https://archive.blender.org/developer/F8520583/Influence_bugreport.blend)

Tal Hershkovich commented

2020-05-08 14:43:14 +02:00

Added subscriber: @TalHershkovich

Robert N. commented

2020-06-25 10:37:36 +02:00

Added subscriber: @RobertN

Wayde Moss commented

2020-10-29 18:13:49 +01:00

Added subscriber: @wbmoss_dev

Wayde Moss commented

2020-10-29 18:13:49 +01:00

This is tagged to the wrong module. It should be Animation & Rigging and User Interface. Separate bugs should be reported separately too.

Omar Emara commented

2022-03-09 12:31:22 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Brad Clark commented

2022-03-09 18:48:13 +01:00

Added subscriber: @BClark

Brad Clark commented

2022-03-09 19:09:53 +01:00

I can confirm there are some issues and or settings that make this seem like a bug.

The first time you turn on Animated Influence, there is an auto key of value 0 added to the first frame of the action, so not just frame 0 but where ever the action is on the timeline.
Animated Strip Time, doesn't have the same bug/issues as Animated Influnces so maybe the code there can be used to fix Animated Influence.
If you then delete the keys from Animated Influence, the next time you turn it on or of, there are not any keys created at 0 for the action. Now it waits to auto key it until the slider is moved.
Slider display - If you move the slider to set the value and the key is created, what ever that first value is that gets keyframed, is now the only value the slider displays when moving the playback head. even if you are on a key, the value shown in the slider isn't the value of the kefyrame unless you update that value by some other way (clicking key button next to the slider, enter the value in the fcurve editor etc) then the slider refreshes and shows the correct values.

I can confirm there are some issues and or settings that make this seem like a bug. 1. The first time you turn on Animated Influence, there is an auto key of value 0 added to the first frame of the action, so not just frame 0 but where ever the action is on the timeline. 2. Animated Strip Time, doesn't have the same bug/issues as Animated Influnces so maybe the code there can be used to fix Animated Influence. 3. If you then delete the keys from Animated Influence, the next time you turn it on or of, there are not any keys created at 0 for the action. Now it waits to auto key it until the slider is moved. 4. Slider display - If you move the slider to set the value and the key is created, what ever that first value is that gets keyframed, is now the only value the slider displays when moving the playback head. even if you are on a key, the value shown in the slider isn't the value of the kefyrame unless you update that value by some other way (clicking key button next to the slider, enter the value in the fcurve editor etc) then the slider refreshes and shows the correct values.

Brad Clark commented

2022-03-09 19:10:16 +01:00

Changed status from 'Confirmed' to: 'Needs Triage'

Omar Emara commented

2022-03-10 14:24:48 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Robert Sunny commented

2022-03-13 09:03:52 +01:00

Added subscriber: @robertsunny

Philipp Oeser removed the

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NLA Strip influence slider doesn't respond to autokey correctly. #76549