Dependency cycle detected even when the constraint is inactive #105790

New Issue

3DBear · 2023-03-15T12:59:20+01:00

3DBear commented

2023-03-15 12:59:20 +01:00

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 527.56

Blender Version
Broken: version: 3.3.0, branch: master, commit date: 2022-09-06 15:39, hash: rB0759f671ce1f
Worked: Never

Short description of error
Blender complains on inactive (disabled) dependency cycles each time when I bake animation.
Unfortunately it affects the baking process (the keys are baked with the delay in one frame).
I know it might not be considered as the bug, but it is a problem:
For instance: I'd use empties to fix feet sliding the ground during the complex character root motion movements.
To make it work first I constraint empties to feets, bake the animation, delete the constraints, then clean up the empties animation so they keep stable toward the surface and finaly constraint the feets to the empties to bake fixed animation.
Defenetly I would not want to create and delete the constraints over and over again: it is much easier to turn them on and off during the work. Same goes with objects that can guide a character or be guided by one during the same scene. We might just want to choose when the object is constrained to the character and when the character should be constrained to the object.

So when the constraint is disabled it should not be considered as the dependency cycles. (It should not be considered in general)
Exact steps for others to reproduce the error

Create some bone and an empty
Add a Copy Transforms constraint to the bone. Choose the empty as the target.
Add a Copy Transforms constraint to the empty. Choose the bone as the target and disable the constraint to break the loop.
Animate empty and try to bake this animation to the bone in a pose mode.
Once you press Bake Action (with Visual Keying On) you'll have a warning: Dependency cycle detected like if you have both constraints enabled.
The animation will be baked with the delay in one frame.

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 527.56 **Blender Version** Broken: version: 3.3.0, branch: master, commit date: 2022-09-06 15:39, hash: `rB0759f671ce1f` Worked: Never **Short description of error** Blender complains on inactive (disabled) dependency cycles each time when I bake animation. Unfortunately it affects the baking process (the keys are baked with the delay in one frame). I know it might not be considered as the bug, but it is a problem: For instance: I'd use empties to fix feet sliding the ground during the complex character root motion movements. To make it work first I constraint empties to feets, bake the animation, delete the constraints, then clean up the empties animation so they keep stable toward the surface and finaly constraint the feets to the empties to bake fixed animation. Defenetly I would not want to create and delete the constraints over and over again: it is much easier to turn them on and off during the work. Same goes with objects that can guide a character or be guided by one during the same scene. We might just want to choose when the object is constrained to the character and when the character should be constrained to the object. So when the constraint is disabled it should not be considered as the dependency cycles. (It should not be considered in general) **Exact steps for others to reproduce the error** 1. Create some bone and an empty 2. Add a Copy Transforms constraint to the bone. Choose the empty as the target. 3. Add a Copy Transforms constraint to the empty. Choose the bone as the target and **disable the constraint to break the loop.** 4. Animate empty and try to bake this animation to the bone in a pose mode. Once you press Bake Action (with Visual Keying On) you'll have a warning: Dependency cycle detected like if you have both constraints enabled. The animation will be baked with the delay in one frame.

3DBear added the

labels 2023-03-15 12:59:21 +01:00

Iliya Katushenock commented

2023-03-15 13:02:57 +01:00

You see a message that there is a cycle, even without baking. It seems that something similar has already been discussed (about the visibility of collections with drivers?)
Not sure if this is a know limitation or just a bug.

![image](/attachments/936e9d80-c9b5-42f1-820a-75ef8ecb2073) You see a message that there is a cycle, even without baking. It seems that something similar has already been discussed (about the visibility of collections with drivers?) Not sure if this is a know limitation or just a bug.

image.png

522 KiB

Iliya Katushenock added the

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Dependency cycle detected even when the constraint is inactive #105790