Active Element Scales from last active face position if no active vert #121135

New Issue

Daniel Gryningstjerna · 2024-04-26T16:50:42+02:00

2024-04-26 16:50:42 +02:00

Blender Version
Broken: version: 4.1.0, branch: blender-v4.1-release, commit date: 2024-03-25 20:42, hash: 40a5e739e270

Short description of error
If no active vert is selected and active element is on, it will scale from a completely random and nonsensical position instead of doing it from the median point of the selected in some cases.

This only happens sometimes on some meshes, most of the time it works correctly.

Wrong:

Correct:

Exact steps for others to reproduce the error

Select the inner circle and scale it using S (from the attached .blend)
Notice that the scale position is scales from is completely random and not reflective of the current selection.
Now try make the circle just a plane like in the correct .gif and notice that it correctly scales from the median like intended.

**Blender Version** Broken: version: 4.1.0, branch: blender-v4.1-release, commit date: 2024-03-25 20:42, hash: `40a5e739e270` **Short description of error** If no active vert is selected and active element is on, it will scale from a completely random and nonsensical position instead of doing it from the median point of the selected in some cases. This only happens sometimes on some meshes, most of the time it works correctly. ![image](/attachments/0a5c74ae-af7e-4326-9dea-a3c2509ec1cf) Wrong: ![Wrong](/attachments/e0db4288-c904-4108-99b1-dfb86f8bfec9) Correct: ![Correct](/attachments/96ff89b0-8898-4c38-a278-0794d814c082) **Exact steps for others to reproduce the error** 1. Select the inner circle and scale it using S (from the attached .blend) 2. Notice that the scale position is scales from is completely random and not reflective of the current selection. 3. Now try make the circle just a plane like in the correct .gif and notice that it correctly scales from the median like intended.

image.png

13 KiB

Correct.gif

1.2 MiB

Active Element Scales Wrong1.blend

881 KiB

Wrong.gif

948 KiB

Daniel Gryningstjerna added the

labels 2024-04-26 16:50:43 +02:00

Max Mustermann commented

2024-04-26 18:36:49 +02:00

I can confirm this behavior. After switching Select Mode from face to edge or vertex, the pivot point seems to be at the last selected face when all vertices/edges of that last active face are selected.

I can confirm this behavior. After switching `Select Mode` from face to edge or vertex, the pivot point seems to be at the last selected face when all vertices/edges of that last active face are selected.

👍 1

Daniel Gryningstjerna commented

2024-04-26 19:56:08 +02:00

I can confirm this behavior. After switching Select Mode from face to edge or vertex, the pivot point seems to be at the last selected face when all vertices/edges of that last active face are selected.

Thanks, but there is literally nothing that indicates or explains it in the UI or viewport, it's just super confusing behavior to be frank. It should just scale to the median point in all casese if no active vertex is selected, like it does most of the time.

> I can confirm this behavior. After switching `Select Mode` from face to edge or vertex, the pivot point seems to be at the last selected face when all vertices/edges of that last active face are selected. Thanks, but there is literally nothing that indicates or explains it in the UI or viewport, it's just super confusing behavior to be frank. It should just scale to the median point in all casese if no active vertex is selected, like it does most of the time.

Max Mustermann commented

2024-04-27 01:03:43 +02:00

I also think that this is unexpected behavior, but what if you want to scale (or rotate) vertices/edges to the center of the active face? Selecting the face as active and then choosing the vertices to scale would be the only way to do that.

Maybe it's best to have the active element visible regardless of select mode? Or should this happen only when the pivot point is active element?

Or maybe the active element should depend on the current select mode, like you said. Faces can only be the active element in face select mode, edges can only be active element in edge select mode etc.

This is probably a UI issue and a modeling issue. Has it always been this way or is this a regression?

I also think that this is unexpected behavior, but what if you want to scale (or rotate) vertices/edges to the center of the active face? Selecting the face as active and then choosing the vertices to scale would be the only way to do that. Maybe it's best to have the active element visible regardless of select mode? Or should this happen only when the pivot point is active element? Or maybe the active element should depend on the current select mode, like you said. Faces can only be the active element in face select mode, edges can only be active element in edge select mode etc. This is probably a UI issue and a modeling issue. Has it always been this way or is this a regression?

Max Mustermann commented

2024-04-27 01:13:51 +02:00

Can you confirm that the following line is true, and the pivot point is not random?

The pivot point seems to be at the last selected face when all vertices/edges of that last active face are selected.

Can you confirm that the following line is true, and the pivot point is not random? > The pivot point seems to be at the last selected face when all vertices/edges of that last active face are selected.

Daniel Gryningstjerna commented

2024-04-29 14:47:06 +02:00

Can you confirm that the following line is true, and the pivot point is not random?

I do not think the pivot point is random, but it feels random to the user since there is zero indication in the view-port or UI that the pivot has been changde from median point to another location.

> Can you confirm that the following line is true, and the pivot point is not random? > I do not think the pivot point is random, but it feels random to the user since there is zero indication in the view-port or UI that the pivot has been changde from median point to another location.

Pratik Borhade commented

2024-05-07 08:01:01 +02:00

Hi, thanks for the report. Can confirm.

The pivot point seems to be at the last selected face when all vertices/edges of that last active face are selected.

seems so.

Hi, thanks for the report. Can confirm. > The pivot point seems to be at the last selected face when all vertices/edges of that last active face are selected. seems so.

Pratik Borhade added

and removed

labels 2024-05-07 08:01:12 +02:00

Philipp Oeser commented

2024-05-07 09:20:53 +02:00

As pointed out, this is not random, it just uses the , see calc_active_center_for_editmode / BM_select_history_active_get which falls back to the active face.

So in a way, code works as intended (though a bit unintuitive -- and could use the median as fallback as mentioned, which seems to make more sense, agreed)

As pointed out, this is not random, it just uses the , see `calc_active_center_for_editmode` / `BM_select_history_active_get` which falls back to the active face. So in a way, code works as intended (though a bit unintuitive -- and could use the median as fallback as mentioned, which seems to make more sense, agreed)

Philipp Oeser changed title from ~~Active Element Scales from random position if no active vert in some cases~~ to Active Element Scales from last active face position if no active vert

2024-05-07 09:21:32 +02:00

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Active Element Scales from last active face position if no active vert #121135