NLA Cyclic Strip Time does not work with keyframes not starting at one. #104483

New Issue

Cătălin George Feștilă · 2023-02-08T21:34:09+01:00

Cătălin George Feștilă commented

2023-02-08 21:34:09 +01:00

System Information
Operating system: Windows 10
Graphics card: NVIDIA GeForce GTS 450

Blender Version
blender-3.4.0-alpha+master.d1d2f002c7ca-windows.amd64-release
Broken in 2.80 as well

Short description of error

There seems to be no way to make NLA Cyclic Strip Time to work with keyfraames not starting at one.

Exact steps for others to reproduce the error

open repro.blend
strip time is animated (twice the length of the original animation)
cyclic strip time is checked
animation loops through twice (this is expected)
now open repro2.blend
same scenario (same anim length, keyframes are just offset a bit in time)
strip time is animated (twice the length of the original animation)
cyclic strip time is checked
no animation to be seen

Original Report

Short description of error

I used a material with a node and I insert some keys with the I key for some values in the node “compare”, you can see my blender file I add it.
This works but I want to use it cyclic for all animation frames … You can see I set Cyclic Animation, and not work.

I don't know if this is a bug or is a missing feature.

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).

add an object
create a material with node
use any settings , add an math compare just for testing and use I key to make changes for random values in order to see how this works.
try to create a cyclic animation with these values in nonlinear animation area

**System Information** Operating system: Windows 10 Graphics card: NVIDIA GeForce GTS 450 **Blender Version** blender-3.4.0-alpha+master.d1d2f002c7ca-windows.amd64-release Broken in 2.80 as well **Short description of error** There seems to be no way to make NLA Cyclic Strip Time to work with keyfraames not starting at one. **Exact steps for others to reproduce the error** - open `repro.blend` - strip time is animated (twice the length of the original animation) - cyclic strip time is checked - animation loops through twice (this is expected) - now open `repro2.blend` - same scenario (same anim length, keyframes are just offset a bit in time) - strip time is animated (twice the length of the original animation) - cyclic strip time is checked - no animation to be seen ----- ***Original Report*** ----- **Short description of error** I used a material with a node and I insert some keys with the I key for some values in the node “compare”, you can see my blender file I add it. This works but I want to use it cyclic for all animation frames … You can see I set Cyclic Animation, and not work. I don't know if this is a bug or is a missing feature. **Exact steps for others to reproduce the error** Based on the default startup or an attached .blend file (as simple as possible). 1. add an object 2. create a material with node 3. use any settings , add an math compare just for testing and use I key to make changes for random values in order to see how this works. 4. try to create a cyclic animation with these values in nonlinear animation area

laser_scan_bug_.blend

1.2 MiB

repro.blend

861 KiB

repro2.blend

863 KiB

Cătălin George Feștilă added the

labels 2023-02-08 21:34:10 +01:00

Brad Clark commented

2023-02-13 19:51:53 +01:00

That cyclic strip time setting is for cycling the retimed section controlled by strip time https://www.youtube.com/watch?v=khgEdfrapz8.

If you want to cycle a clip, you would use the action clip-repeat to extend the clip and repeat the action, assuming you cycled the animation before hand it will cycle.

That cyclic strip time setting is for cycling the retimed section controlled by strip time https://www.youtube.com/watch?v=khgEdfrapz8. If you want to cycle a clip, you would use the action clip-repeat to extend the clip and repeat the action, assuming you cycled the animation before hand it will cycle.

Cătălin George Feștilă commented

2023-02-13 21:11:25 +01:00

That cyclic strip time setting is for cycling the retimed section controlled by strip time https://www.youtube.com/watch?v=khgEdfrapz8.

If you want to cycle a clip, you would use the action clip-repeat to extend the clip and repeat the action, assuming you cycled the animation before hand it will cycle.

I find a solution but is a trick ...
Your solution not a works with clip-repeat with action ... because don't keep the material node changes ...

> That cyclic strip time setting is for cycling the retimed section controlled by strip time https://www.youtube.com/watch?v=khgEdfrapz8. > > If you want to cycle a clip, you would use the action clip-repeat to extend the clip and repeat the action, assuming you cycled the animation before hand it will cycle. I find a solution but is a trick ... Your solution not a works with clip-repeat with action ... because don't keep the material node changes ...

Brad Clark commented

2023-02-13 21:46:51 +01:00

I am explaining what the tools do based on what you asked, so it isn't a bug or a missing feature from what I am seeing the the file, to answer your original question

If I open the file, I see a pink line animating across the cube, when I set the repeat for the clip I see that animation loops, if I turn off the clip the line stops.

I am explaining what the tools do based on what you asked, so it isn't a bug or a missing feature from what I am seeing the the file, to answer your original question If I open the file, I see a pink line animating across the cube, when I set the repeat for the clip I see that animation loops, if I turn off the clip the line stops.

Cătălin George Feștilă commented

2023-02-13 21:59:43 +01:00

@BClark : No again , you don't understand my issue, thank you !!!

Philipp Oeser commented

2023-02-14 10:09:50 +01:00

@BClark : thx for the reference
My takeaways from this (for now):

Cyclic Strip Time is more or less only relevant if you have Animated Strip Time turned ON as well
I have an example similar to the video that works with material keyframes (see repro.blend)
however, I am still unable to make this work with actions not starting at frame 1 (see repro2.blend)
in regards to repeat: I can make that work, yes (see laser_scan_bug_repeat.blend)

@BClark : what am I missing with repro2.blend? (sorry if this is indeed a user error due to not understanding the feature, but it is surely under-documented...)

@mythcat : does repeat work for you?

@BClark : thx for the reference My takeaways from this (for now): - Cyclic Strip Time is more or less only relevant if you have Animated Strip Time turned ON as well - I have an example similar to the video that works with material keyframes (see `repro.blend`) - however, I am still unable to make this work with actions not starting at frame 1 (see `repro2.blend`) - in regards to repeat: I can make that work, yes (see `laser_scan_bug_repeat.blend`) @BClark : what am I missing with `repro2.blend`? (sorry if this is indeed a user error due to not understanding the feature, but it is surely under-documented...) @mythcat : does repeat work for you?

laser_scan_bug_repeat.blend

1.2 MiB

repro2.blend

863 KiB

repro.blend

861 KiB

Brad Clark commented

2023-02-14 18:15:43 +01:00

I see, no there is something strange/not working with both the display and the way stip time and cycle is interacting. It will need some deeper testing.

This is looking like a regression

I see, no there is something strange/not working with both the display and the way stip time and cycle is interacting. It will need some deeper testing. This is looking like a regression

Philipp Oeser commented

2023-02-15 10:21:25 +01:00

This is looking like a regression

2.80 behaves the same.

I will update the report description with my two examples (one working as expected, the other one not) and will confirm this for now.

> This is looking like a regression 2.80 behaves the same. I will update the report description with my two examples (one working as expected, the other one not) and will confirm this for now.

Philipp Oeser changed title from ~~cyclic nonlinear animation area based on material keyframe inserted.~~ to NLA Cyclic Strip Time does not work with keyframes not starting at one.

2023-02-15 10:29:23 +01:00

Philipp Oeser added

and removed

labels 2023-02-15 10:29:45 +01:00

Philipp Oeser commented

2023-02-15 10:50:15 +01:00

Tbh. I am either still not understanding the feature right, or it is just an obscure thing.

Why would we need a toggle to have this run cyclic if we could just put a FCurve modifier on the strip time curve?

Tbh. I am either still not understanding the feature right, or it is just an obscure thing. Why would we need a toggle to have this run cyclic if we could just put a FCurve modifier on the strip time curve?

laser_scan_bug_striptime_fmodifier.blend

1.2 MiB

Brad Clark commented

2023-02-20 18:59:16 +01:00

@lichtwerk I am not clear on what this is doing/supposed to do either.

@mythcat does putting a fcurve modifier on the strip time create a workaround for you, you can use for now?

@lichtwerk I am not clear on what this is doing/supposed to do either. @mythcat does putting a fcurve modifier on the strip time create a workaround for you, you can use for now?

Cătălin George Feștilă commented

2023-02-22 22:52:55 +01:00

@lichtwerk you solve the problem with FCurve modifier on the strip time curve
I haven't used this part of Blender 3D and Manual Frame Range and Cyclic Animation led me here...and I wasn't really sure. Thank you for help me.

@lichtwerk you solve the problem with FCurve modifier on the strip time curve I haven't used this part of Blender 3D and Manual Frame Range and Cyclic Animation led me here...and I wasn't really sure. Thank you for help me. ![image](/attachments/e3fcdc77-41a8-4c04-b03f-b016069f1eb3)

image.png

38 KiB

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NLA Cyclic Strip Time does not work with keyframes not starting at one. #104483