Bug when working with the Child Of constraint and the Selection to Cursor command #91079

New Issue

Petr · 2021-08-31T10:38:06+02:00

Petr commented

2021-08-31 10:38:06 +02:00

Blender Version
Broken: version: 3.0.0 Alpha, branch: arcpatch-D6110, commit date: 2021-08-25 13:28, hash: 6e57bc2a4e
Worked: Never

Short description of error
When working with the Child Of constraint the Select To Cursor command does not work correctly.

Exact steps for others to reproduce the error

Open attached file
In the 3d View press {key Shift S} and Select To Cursor
Bug_ChildOf_Selection2Cursor.blend

Original Report:
When working with the Child Of constraint, it is impossible to use it several times by enabling and disabling the influence of the constraint.
He second time the offset is different and the child object jumps away from the desired position.
It's hard to put it in the right place. I tried to use a 3D cursor for this, but the Select To Cursor command does not work correctly when working with this the Child Of constraints.

**Blender Version** Broken: version: 3.0.0 Alpha, branch: arcpatch-[D6110](https://archive.blender.org/developer/D6110), commit date: 2021-08-25 13:28, hash: `6e57bc2a4e` Worked: Never **Short description of error** When working with the Child Of constraint the `Select To Cursor` command does not work correctly. **Exact steps for others to reproduce the error** - Open attached file - In the 3d View press {key Shift S} and `Select To Cursor` [Bug_ChildOf_Selection2Cursor.blend](https://archive.blender.org/developer/F10356452/Bug_ChildOf_Selection2Cursor.blend) --- **Original Report:** When working with the Child Of constraint, it is impossible to use it several times by enabling and disabling the influence of the constraint. He second time the offset is different and the child object jumps away from the desired position. It's hard to put it in the right place. I tried to use a 3D cursor for this, but the Select To Cursor command does not work correctly when working with this the Child Of constraints.

Petr commented

2021-08-31 10:38:06 +02:00

Added subscriber: @bel.petr

Richard Antalik commented

2021-09-01 04:55:49 +02:00

Added subscriber: @iss

Richard Antalik commented

2021-09-01 04:55:49 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Richard Antalik commented

2021-09-01 04:55:49 +02:00

This sounds more like workflow issue than a bug.

If you think this is bug, please provide steps to reproduce the bug.
If this is workflow issue please consult this issue in community websites: https://www.blender.org/community/

This sounds more like workflow issue than a bug. If you think this is bug, please provide steps to reproduce the bug. If this is workflow issue please consult this issue in community websites: https://www.blender.org/community/

Petr commented

2021-09-01 09:58:47 +02:00

I have uploaded a blender file. Try to bind the pyramid in frame 175 so that it does not roll to the side. I could not. Also, I could not set it off either to the 3D cursor, or to an empty object.
I also uploaded a video file in it showing the process and the problem associated with it.

https://youtu.be/2BSLMw14JTA
Bug_ChildOf_Selection2Cursor.mp4

I have uploaded a blender file. Try to bind the pyramid in frame 175 so that it does not roll to the side. I could not. Also, I could not set it off either to the 3D cursor, or to an empty object. I also uploaded a video file in it showing the process and the problem associated with it. https://youtu.be/2BSLMw14JTA [Bug_ChildOf_Selection2Cursor.mp4](https://archive.blender.org/developer/F10359947/Bug_ChildOf_Selection2Cursor.mp4)

Richard Antalik commented

2021-09-02 10:03:28 +02:00

Changed status from 'Needs User Info' to: 'Needs Triage'

Richard Antalik commented

2021-09-02 10:03:28 +02:00

Added subscriber: @mano-wii

Richard Antalik commented

2021-09-02 10:03:28 +02:00

Ok I understand now what you are trying to do. In video you keyed visual location with modifier disabled, then when you enable modifier it will jump. that is not a bug because visual location is same as actual location with modifier disabled.

I think, that snapping should work in this case, but not sure. @mano-wii can you check?

Ok I understand now what you are trying to do. In video you keyed visual location with modifier disabled, then when you enable modifier it will jump. that is not a bug because visual location is same as actual location with modifier disabled. I think, that snapping should work in this case, but not sure. @mano-wii can you check?

Alexey commented

2021-09-02 12:05:40 +02:00

Added subscriber: @ThirtysixLab

Alexey commented

2021-09-02 12:05:40 +02:00

Hi. May I take part in the discussion? ...

The 3D cursor must always be in a visually correct position in the world - otherwise, for what need (3Dcursor to selected) !!!

Ideally, the cursor should also receive angles degrees, so that later the object can be positioned with angles by (selected to 3Dcursor). - but it will probably be in version 4.00 ))

Hi. May I take part in the discussion? ... The 3D cursor must always be in a visually correct position in the world - otherwise, for what need (3Dcursor to selected) !!! Ideally, the cursor should also receive angles degrees, so that later the object can be positioned with angles by (selected to 3Dcursor). - but it will probably be in version 4.00 ))

Germano Cavalcante commented

2021-09-02 21:26:25 +02:00

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

Germano Cavalcante commented

2021-09-02 21:26:25 +02:00

In #91079#1215060, @iss wrote:
Ok I understand now what you are trying to do. In video you keyed visual location with modifier disabled, then when you enable modifier it will jump. that is not a bug because visual location is same as actual location with modifier disabled.

I think, that snapping should work in this case, but not sure. @mano-wii can you check?

This is indeed a bug.
D7780: Transform: Replace View3d Snap operators with a transform ops version is a patch that would solve this problem.

> In #91079#1215060, @iss wrote: > Ok I understand now what you are trying to do. In video you keyed visual location with modifier disabled, then when you enable modifier it will jump. that is not a bug because visual location is same as actual location with modifier disabled. > > I think, that snapping should work in this case, but not sure. @mano-wii can you check? This is indeed a bug. [D7780: Transform: Replace View3d Snap operators with a transform ops version](https://archive.blender.org/developer/D7780) is a patch that would solve this problem.

Petr commented

2021-09-03 09:03:32 +02:00

This function does not work for me in version 2.9

Philipp Oeser removed the

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Bug when working with the Child Of constraint and the Selection to Cursor command #91079