Bevel object from different scene won't automatically update generated bezier curve geometry #44213

New Issue

Duarte Farrajota Ramos · 2015-04-01T02:10:25+02:00

2015-04-01 02:10:25 +02:00

System Information
Windows 7 64bits NVidia GTX 580

Blender Version
Broken: Blender 2.74 RC4
Long standing bug, at least since 2.72, probably earlier

Short description of error
If the bevel object is in a different scene from the curve path scene it won't automatically update beveled geometry

Exact steps for others to reproduce the error
If the bevel object is in a different scene from the curve path it won't automatically update beveled geometry

Default new scene (Scene 1)
Add new bezier curve 'A'
Create new scene (Scene 2) in same blend file
Change to 'Scene 2'
Add a new bezier curve 'B'
Add bezier curve 'A' from previous scene 'Scene 1' as bevel object
Go back to first scene 'Scene 1'
Enter edit mode in first bezier 'A'
Introduce any random transformation (move some vertex around)
Exit edit mode and return to second scene 'Scene 2' where curve 'A' is used as bevel object on curve 'B'

Second curve's 'B' bevel geometry is not updated, to reflect the changes in curve 'A's shape one must manually enter edit mode to force update.

Check demo file: lazy_curve_updating.blend

Curiously upon creating demo file I discovered that if the file is first opened on Scene 1, curve A is changed and Scene 2 is then opened for the first time after changing curve A's geometry, the generated mesh is correctly updated.

**System Information** Windows 7 64bits NVidia GTX 580 **Blender Version** Broken: Blender 2.74 RC4 Long standing bug, at least since 2.72, probably earlier **Short description of error** If the bevel object is in a different scene from the curve path scene it won't automatically update beveled geometry **Exact steps for others to reproduce the error** If the bevel object is in a different scene from the curve path it won't automatically update beveled geometry - Default new scene (Scene 1) - Add new bezier curve 'A' - Create new scene (Scene 2) in same blend file - Change to 'Scene 2' - Add a new bezier curve 'B' - Add bezier curve 'A' from previous scene 'Scene 1' as bevel object - Go back to first scene 'Scene 1' - Enter edit mode in first bezier 'A' - Introduce any random transformation (move some vertex around) - Exit edit mode and return to second scene 'Scene 2' where curve 'A' is used as bevel object on curve 'B' # Second curve's 'B' bevel geometry is not updated, to reflect the changes in curve 'A's shape one must manually enter edit mode to force update. Check demo file: [lazy_curve_updating.blend](https://archive.blender.org/developer/F156946/lazy_curve_updating.blend) Curiously upon creating demo file I discovered that if the file is first opened on Scene 1, curve A is changed and Scene 2 is then opened for the first time after changing curve A's geometry, the generated mesh is correctly updated.

Duarte Farrajota Ramos commented

2015-04-01 02:10:25 +02:00

Changed status to: 'Open'

Duarte Farrajota Ramos commented

2015-04-01 02:10:25 +02:00

Added subscriber: @DuarteRamos

perfection cat commented

2015-04-02 10:05:42 +02:00

Added subscriber: @sindra1961

perfection cat commented

2015-04-02 10:05:42 +02:00

I think that the reason is the same as the following cases.
You make curve in separate layers one by one.
You set other curve in Bevel Object of one curve.
You choose only a layer of curve which you set in Bevel Object, and you edit curve.
As a result of having edited it, it is not reflected.
If you choose both layers and edit it, it is reflected.

I think that the reason is the same as the following cases. You make curve in separate layers one by one. You set other curve in Bevel Object of one curve. You choose only a layer of curve which you set in Bevel Object, and you edit curve. As a result of having edited it, it is not reflected. If you choose both layers and edit it, it is reflected.

Duarte Farrajota Ramos commented

2015-04-02 11:30:58 +02:00

True, I get that also in 2.72 32bits under Windows XP 64.
Now this is not a very concerning bug, just a small nuisance. It probably misses some sort of update flag or something, and this is probably done to improve performance by not updating or generating hidden geometry.

True, I get that also in 2.72 32bits under Windows XP 64. Now this is not a very concerning bug, just a small nuisance. It probably misses some sort of update flag or something, and this is probably done to improve performance by not updating or generating hidden geometry.

Antonis Ryakiotakis commented

2015-04-02 13:01:27 +02:00

Added subscriber: @Psy-Fi

Antonis Ryakiotakis commented

2015-04-02 13:01:27 +02:00

Confirmed. A dependency issue for sure. I'm not sure we support chains between scenes though.

Sergey Sharybin was assigned by Antonis Ryakiotakis

2015-04-02 13:08:01 +02:00

perfection cat commented

2015-04-03 03:02:21 +02:00

@DuarteRamos:
I did not write that this was bug to answer in the affirmative.
I intended to show that current blender did not support the method.
Because blender is a tool, there is an assembly operation to use it.
If you want to let you reflect a change result of the Bevel object, it will be reflected if you set object again.

@DuarteRamos: I did not write that this was bug to answer in the affirmative. I intended to show that current blender did not support the method. Because blender is a tool, there is an assembly operation to use it. If you want to let you reflect a change result of the Bevel object, it will be reflected if you set object again.

Duarte Farrajota Ramos commented

2015-04-03 03:13:00 +02:00

Hum I see, I assumed that if it updated automatically in most other situations than this was some sort of bug or missing some update flag.
If this was incorrectly assumed and this is not supported or just the expected behavior for these cases than I guess we can close the report.

Hum I see, I assumed that if it updated automatically in most other situations than this was some sort of bug or missing some update flag. If this was incorrectly assumed and this is not supported or just the expected behavior for these cases than I guess we can close the report.

perfection cat commented

2015-04-03 04:12:11 +02:00

@DuarteRamos:
I am not a developer of blender.
I am a user same as you.
Possibly their opinion may be different from my thing.

@DuarteRamos: I am not a developer of blender. I am a user same as you. Possibly their opinion may be different from my thing.

blender-admin commented

2015-04-08 17:06:42 +02:00

This issue was referenced by 2d05466700

This issue was referenced by 2d054667001602cd9b15046190e09167d7951d89

Sergey Sharybin commented

2015-04-08 17:07:09 +02:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2015-04-08 17:07:09 +02:00

Sergey Sharybin commented

2015-04-08 17:07:09 +02:00

Closed by commit 2d05466700.

Closed by commit 2d05466700.

perfection cat commented

2015-04-09 04:51:32 +02:00

Added subscriber: @Sergey

perfection cat commented

2015-04-09 04:51:32 +02:00

@Sergey:
I tried it in the latest edition, but nothing changes.
Is it right that what happens?

version 2.74 (sub 4), branch b'master', commit date b'2015-04-08' b'19:59', hash b'aa24704', b'Release'

@Sergey: I tried it in the latest edition, but nothing changes. Is it right that what happens? version 2.74 (sub 4), branch b'master', commit date b'2015-04-08' b'19:59', hash b'aa24704', b'Release'

perfection cat commented

2015-04-09 05:04:45 +02:00

I'm sorry, a way of the confirmation was wrong.
However, I have a question toward your correction.
I attach a file.
A result is reflected when I edit curve of different layer of different scene.
However, a result is not reflected even if I edit curve of different layer of same scene.
You set BezierCurve in beziel object of BezierCurve.001, and you edit it.
what.blend
Edit it without choosing layer at the same time.

I'm sorry, a way of the confirmation was wrong. However, I have a question toward your correction. I attach a file. A result is reflected when I edit curve of different layer of different scene. However, a result is not reflected even if I edit curve of different layer of same scene. You set BezierCurve in beziel object of BezierCurve.001, and you edit it. [what.blend](https://archive.blender.org/developer/F159998/what.blend) Edit it without choosing layer at the same time.

perfection cat commented

2015-04-09 06:44:03 +02:00

Does it not ignore the setting of object>Relations>Layers?

Sergey Sharybin commented

2015-04-09 11:53:21 +02:00

You currently need to have both scene visible (same as in original file you submitted), otherwise layer visibility optimization will prevent flush from happening. This is being addressed in the depsgraph_refactor branch.

perfection cat commented

2015-04-10 01:13:49 +02:00

This comment was removed by @sindra1961

*This comment was removed by @sindra1961*

perfection cat commented

2015-04-11 04:46:57 +02:00

This comment was removed by @sindra1961

*This comment was removed by @sindra1961*

perfection cat commented

2015-04-11 05:51:43 +02:00

This comment was removed by @sindra1961

*This comment was removed by @sindra1961*

perfection cat commented

2015-04-11 07:12:46 +02:00

This comment was removed by @sindra1961

*This comment was removed by @sindra1961*

perfection cat commented

2015-04-11 08:03:16 +02:00

@Sergey:
My confirmation method seemed to be wrong.
I am sorry for making noise.

@Sergey: My confirmation method seemed to be wrong. I am sorry for making noise.

perfection cat commented

2015-04-11 09:07:44 +02:00

@Sergey:
I write only one having noticed.
I edit curve which I appointed in Bevel object, and the result is reflected by edit mode if I come back to original scene.
However, the result is not reflected when I come back to original scene after editing curve, and finishing edit mode.
It is written in the report that I come back to original scene after finishing edit mode.

@Sergey: I write only one having noticed. I edit curve which I appointed in Bevel object, and the result is reflected by edit mode if I come back to original scene. However, the result is not reflected when I come back to original scene after editing curve, and finishing edit mode. It is written in the report that I come back to original scene after finishing edit mode.

Sergey Sharybin commented

2015-04-13 13:00:10 +02:00

Edit mode is handled differently -- it does not really need to go via depsgraph update, because edit mode is displayed directly from the DNA. But if you'll have some modifiers applied on curve and enabled for edit mode then they might be displayed incorrectly after switching layers when editing the curve.

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Bevel object from different scene won't automatically update generated bezier curve geometry #44213

Second curve's 'B' bevel geometry is not updated, to reflect the changes in curve 'A's shape one must manually enter edit mode to force update.