Mirroring in Object Mode is inconsistent #44401

New Issue

Philip Holzmann · 2015-04-15T18:35:19+02:00

Philip Holzmann commented

2015-04-15 18:35:19 +02:00

Blender Version
Broken: (example: 2.74 000dfc0)

Short description of error
When mirroring in Object Mode, either by using the mirror operator or by scaling, the result is sometimes wrong.
But when the object is mirrored by parenting it to an empty, which is then scaled and the transformation is applied (so the empty can be deleted), the result is right.

Exact steps for others to reproduce the error
mirror operator:
Select both arrows. (Make sure not to move to move the 3D-Cursor, which is centered and serves as pivot center)
Press Ctrl+M to mirror, select the 'X'-Axis.
Now the arrows are pointing in different directions.

empty mirroring:
Add an empty. Parent both arrows to the empty.
Select (only) the empty. Press Ctrl+M to mirror, select the 'X'-Axis.
Press Ctrl+A to apply the empty's transform, select 'Scale'. Now delete the empty.
Now the arrows are pointing in the same direction. Which I had expected for the mirror operator as well.

[bug.blend](https://archive.blender.org/developer/F162319/bug.blend) **Blender Version** Broken: (example: 2.74 000dfc0) **Short description of error** When mirroring in Object Mode, either by using the mirror operator or by scaling, the result is sometimes wrong. But when the object is mirrored by parenting it to an empty, which is then scaled and the transformation is applied (so the empty can be deleted), the result is right. **Exact steps for others to reproduce the error** *mirror operator:* Select both arrows. (Make sure not to move to move the 3D-Cursor, which is centered and serves as pivot center) Press Ctrl+M to mirror, select the 'X'-Axis. Now the arrows are pointing in different directions. *empty mirroring:* Add an empty. Parent both arrows to the empty. Select (only) the empty. Press Ctrl+M to mirror, select the 'X'-Axis. Press Ctrl+A to apply the empty's transform, select 'Scale'. Now delete the empty. Now the arrows are pointing in the same direction. Which I had expected for the mirror operator as well.

Philip Holzmann commented

2015-04-15 18:35:19 +02:00

Changed status to: 'Open'

Philip Holzmann commented

2015-04-15 18:35:19 +02:00

Added subscriber: @Foaly

Julian Eisel commented

2015-04-16 17:54:41 +02:00

Changed status from 'Open' to: 'Archived'

Julian Eisel closed this issue

2015-04-16 17:54:41 +02:00

Julian Eisel self-assigned this 2015-04-16 17:54:41 +02:00

Julian Eisel commented

2015-04-16 17:54:41 +02:00

Hey @Foaly,
they don't behave the same because one arrow's rotation is different than the other's. If you apply it's rotation so that both have a rotation of 0 and repeat the mirroring, everything should work fine.

So thanks for the report, but for now I don't see a bug here (luckily ;) )

Hey @Foaly, they don't behave the same because one arrow's rotation is different than the other's. If you apply it's rotation so that both have a rotation of 0 and repeat the mirroring, everything should work fine. So thanks for the report, but for now I don't see a bug here (luckily ;) )

Philip Holzmann commented

2015-04-16 21:35:05 +02:00

I did not know that this behaviour was intended.
But I think there is no point in having a mirror operator, if it can't mirror rotated objects.
I sometimes create objects wich are linked copies (so I can't just apply the rotation) and having to parent them to an empty to mirror them correctly is a bit weird.

I did not know that this behaviour was intended. But I think there is no point in having a mirror operator, if it can't mirror rotated objects. I sometimes create objects wich are linked copies (so I can't just apply the rotation) and having to parent them to an empty to mirror them correctly is a bit weird.

Julian Eisel commented

2015-04-16 21:48:58 +02:00

Well I bet there are artist around using this behaviour to do crazy things, sometimes things just aren't that obvious ;) But in this case I guess this is mostly due to the internal handling of the data.

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Mirroring in Object Mode is inconsistent #44401