Metaball names with digits in the end are invisible (also issue with renaming/duplicating metaballs) #66715

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opened 2019-07-11 19:01:06 +02:00 by Vyacheslav Kobozev · 25 comments

Vyacheslav Kobozev commented

2019-07-11 19:01:06 +02:00

System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86

Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-10 23:46, hash: 676543d91f
Worked: (optional)

Short description of error
If you will try to use names like MetaballFamily2, Family will disappear.
Names like Aaaa1aa and 1aaaaa — checked too, causes no problem
2019-07-11_19-49-29.mp4
untitled.blend

Exact steps for others to reproduce the error
Make metaball, add 1 to the family name

**System Information** Operating system: Windows-7-6.1.7601-SP1 64 Bits Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86 **Blender Version** Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-10 23:46, hash: `676543d91f` Worked: (optional) **Short description of error** If you will try to use names like MetaballFamily2, Family will disappear. Names like Aaaa1aa and 1aaaaa — checked too, causes no problem [2019-07-11_19-49-29.mp4](https://archive.blender.org/developer/F7593985/2019-07-11_19-49-29.mp4) [untitled.blend](https://archive.blender.org/developer/F7593987/untitled.blend) **Exact steps for others to reproduce the error** Make metaball, add 1 to the family name

Vyacheslav Kobozev commented

2019-07-11 19:01:06 +02:00

Author

Added subscriber: @Vyach

Added subscriber: @Vyach

blender-admin commented

2019-07-11 19:01:06 +02:00

#72986 was marked as duplicate of this issue

#72986 was marked as duplicate of this issue

Germano Cavalcante commented

2019-07-11 19:32:03 +02:00

Member

Added subscriber: @mano-wii

Added subscriber: @mano-wii

Germano Cavalcante commented

2019-07-11 19:32:03 +02:00

Member

Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'

Germano Cavalcante closed this issue

2019-07-11 19:32:03 +02:00

Germano Cavalcante self-assigned this 2019-07-11 19:32:03 +02:00

Germano Cavalcante commented

2019-07-11 19:32:03 +02:00

Member

The code was made to work that way. See:
https://developer.blender.org/diffusion/B/browse/master/source/blender/blenkernel/intern/mball.c$287-311

If the last digit is not a number, it is not a mball basis (or motherball).
However we could check if it has a . before the digits.
But I don't think this change is worth it.
See the manual if there is any doubt about metaball names.

The code was made to work that way. See: https://developer.blender.org/diffusion/B/browse/master/source/blender/blenkernel/intern/mball.c$287-311 If the last digit is not a number, it is not a `mball basis` (or `motherball`). However we could check if it has a `.` before the digits. But I don't think this change is worth it. See [the manual ](http://www.blender.org/manual/modeling/metas/editing.html#object-families) if there is any doubt about metaball names.

Philipp Oeser commented

2019-07-11 19:45:39 +02:00

Member

Added subscriber: @lichtwerk

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-07-11 19:45:39 +02:00

Member

Changed status from 'Archived' to: 'Open'

Changed status from 'Archived' to: 'Open'

Philipp Oeser reopened this issue

2019-07-11 19:45:39 +02:00

Germano Cavalcante was unassigned by Philipp Oeser

2019-07-11 19:45:39 +02:00

Philipp Oeser self-assigned this 2019-07-11 19:45:39 +02:00

Philipp Oeser commented

2019-07-11 19:45:39 +02:00

Member

Well yes, those metaballs...

I would consider this a bug though, it is not what is written in the manual and there is other stuff going wrong as well:

you can rename a child from Mball.001 to foo [so it gets its own independent base], then rename it back to Mball.001 --> will never return into the family
or try renaming a child Mball.001 to its base Mball [which will then get renamed and real funny things start happening...]

Will put on my desk with low prio (for when there is time for it), but just throwing it away seems wrong, too [if you dont mind @mano-wii]

Well yes, those metaballs... I would consider this a bug though, it is not what is written in the manual and there is other stuff going wrong as well: - you can rename a child from `Mball.001` to `foo` [so it gets its own independent base], then rename it back to `Mball.001` --> will never return into the family - or try renaming a child `Mball.001` to its base `Mball` [which will then get renamed and real funny things start happening...] Will put on my desk with low prio (for when there is time for it), but just throwing it away seems wrong, too [if you dont mind @mano-wii]

Campbell Barton commented

2019-07-12 03:49:52 +02:00

Owner

Added subscriber: @ideasman42

Added subscriber: @ideasman42

Campbell Barton commented

2019-07-12 03:49:52 +02:00

Owner

Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'

Campbell Barton closed this issue

2019-07-12 03:49:52 +02:00

Campbell Barton commented

2019-07-12 03:49:52 +02:00

Owner

Closing since this is intended behavior, matching 2.7x

Closing since this is intended behavior, matching 2.7x

Vyacheslav Kobozev commented

2019-07-12 07:52:04 +02:00

Author

@ideasman42 But WHY such behaviour is intended? It is behavior, that have no purpose and confusing users.
Am I wrong? Should users avoid names JUST BECAUSE?

@ideasman42 But WHY such behaviour is intended? It is behavior, that have no purpose and confusing users. Am I wrong? Should users avoid names JUST BECAUSE?

Campbell Barton commented

2019-07-12 08:02:42 +02:00

Owner

See: https://docs.blender.org/manual/en/dev/modeling/metas/editing.html#object-families

See: https://docs.blender.org/manual/en/dev/modeling/metas/editing.html#object-families

Campbell Barton commented

2019-07-12 08:10:01 +02:00

Owner

Changed status from 'Archived' to: 'Open'

Changed status from 'Archived' to: 'Open'

Campbell Barton reopened this issue

2019-07-12 08:10:01 +02:00

Campbell Barton commented

2019-07-12 08:10:01 +02:00

Owner

While the issue of meta-families isn't a bug, the issues @lichtwerk mentions are.

Opening, although I can't redo @lichtwerk's bugs, exactly, I can still get errors renaming.

Delete everything
Add a metaball
Name it A
Duplicate it.
Name it B

... so far so good ..

Rename B to A

There is some strange overlapping geometry effect.

While the issue of meta-families isn't a bug, the issues @lichtwerk mentions are. Opening, although I can't redo @lichtwerk's bugs, exactly, I can still get errors renaming. - Delete everything - Add a metaball - Name it `A` - Duplicate it. - Name it `B` *... so far so good ..* - Rename `B` to `A` There is some strange overlapping geometry effect.

Vyacheslav Kobozev commented

2019-07-12 10:52:31 +02:00

Author

@ideasman42 read docs before I made this.

So I am not a newb, I like work with metapotentials, know how work with em,
But, perhaps, I am blind, or there is no info about restrictions/warnings for A1 naming.

About A.001->B->A
If you rename first A (that was A from start) back to A again (initial A becomes A.001 when you renamed B to A) you will fix the problem
2019-07-12_11-47-57.mp4
So after switching names between initial Mball and chinldren there saved something on initial ball, that prevents secon ball become main, I think.
Or something that conflicts because first ball was head from start and second become head after remaining to B.

@ideasman42 read docs before I made this. ![7772516.jpg](https://archive.blender.org/developer/F7601787/7772516.jpg) So I am not a newb, I like work with metapotentials, know how work with em, But, perhaps, I am blind, or there is no info about restrictions/warnings for A1 naming. About A.001->B->A If you rename first A (that was A from start) back to A again (initial A becomes A.001 when you renamed B to A) you will fix the problem [2019-07-12_11-47-57.mp4](https://archive.blender.org/developer/F7602010/2019-07-12_11-47-57.mp4) So after switching names between initial Mball and chinldren there saved something on initial ball, that prevents secon ball become main, I think. Or something that conflicts because first ball was head from start and second become head after remaining to B.

Philipp Oeser commented

2019-07-12 11:12:26 +02:00

Member

@Vyach : yes, that was the "real funny things" I was talking about earlier... will look into it... [it is not super high prio though, since knowing the quirks should enable you to work around...]

@Vyach : yes, that was the "real funny things" I was talking about earlier... will look into it... [it is not super high prio though, since knowing the quirks should enable you to work around...]

Vyacheslav Kobozev commented

2019-07-12 11:22:56 +02:00

Author

@lichtwerk yep, nothing serious, that prevents to work with.

So I leave two warnings for those, who will search info here:

Do not name Metafamilies with digits in the end, Like Aaaa1 (Aaaa1a is ok)
Do not name duplicates the same name as one of families already have (any name before index, Like initial Mball for example)

@lichtwerk yep, nothing serious, that prevents to work with. So I leave two warnings for those, who will search info here: 1. **Do not name** Metafamilies with digits in the end, Like **Aaaa1** (Aaaa1a is ok) 2. **Do not name** duplicates the same name **as one of families** already have (any name before index, Like initial Mball for example)

Wouter Stomp commented

2019-09-18 13:31:20 +02:00

Added subscriber: @blenderrocket

Added subscriber: @blenderrocket

Wouter Stomp commented

2019-09-18 13:31:20 +02:00

I just discovered that metaballs names cannot end in digits the hard way. Can there at least be a clear warning added to the manual about this? The only thing I see written in the manual is about digits after the dot for the families. There is nothing written about no digits in the base name, these being hidden is very confusing and unexpected behavior. Even better, a simple check for a dot being present before the digits would fix this.

I just discovered that metaballs names cannot end in digits the hard way. Can there at least be a clear warning added to the manual about this? The only thing I see written in the manual is about digits after the dot for the families. There is nothing written about no digits in the base name, these being hidden is very confusing and unexpected behavior. Even better, a simple check for a dot being present before the digits would fix this.

Philipp Oeser was unassigned by Dalai Felinto

2019-12-23 16:33:48 +01:00

Philipp Oeser changed title from ~~Metaball names with digits in the end are invisible~~ to Metaball names with digits in the end are invisible (also issue with renaming metaballs)

2020-01-09 12:03:20 +01:00

Philipp Oeser changed title from ~~Metaball names with digits in the end are invisible (also issue with renaming metaballs)~~ to Metaball names with digits in the end are invisible (also issue with renaming/duplicating metaballs)

2020-01-09 12:29:21 +01:00

Philipp Oeser commented

2020-01-09 16:30:34 +01:00

Member

Added subscriber: @renaissance_man

Added subscriber: @renaissance_man

Jeroen Bakker commented

2020-01-21 12:44:28 +01:00

Member

Added subscriber: @Jeroen-Bakker

Added subscriber: @Jeroen-Bakker

Jeroen Bakker commented

2020-01-21 12:44:28 +01:00

Member

Metaballs has no active maintainer/developer. Will mark this issue as Known Issue as we don't know if it will be picked up in the next 6 months.

Metaballs has no active maintainer/developer. Will mark this issue as Known Issue as we don't know if it will be picked up in the next 6 months.

Philipp Oeser removed the

label 2023-02-09 15:29:43 +01:00

Wouter Stomp commented

2023-11-03 17:06:03 +01:00

In recent Blender versions this seems to work correctly.

In recent Blender versions this seems to work correctly.

Vyacheslav Kobozev commented

2023-11-16 12:27:49 +01:00

Author

just jested with 4.0.0, 878f71061b8e, 2023-11-13 17:26
Issue is gone, so I will close report

just jested with 4.0.0, `878f71061b8e`, 2023-11-13 17:26 Issue is gone, so I will close report

Vyacheslav Kobozev closed this issue

2023-11-16 12:28:00 +01:00

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