Rotate with "R" key or using bpy.ops.transform.rotate produces inverted rotation. Effects Object, Mesh Edit and Pose Mode #83092

New Issue

Richard Rose · 2020-11-27T07:49:17+01:00

Richard Rose commented

2020-11-27 07:49:17 +01:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.38

Blender Version
Broken: version: 2.91.0, branch: master, commit date: 2020-11-25 08:34, hash: 0f45cab862
Worked: version: 2.90.1, branch: master, commit date: 2020-09-23 06:43, hash: 3e85bb34d0

Short description of error

If a numeric figure is entered after pressing "R" to rotate an object by a set amount in object mode or if bpy.ops.transform.rotate is called via a script or the console, objects rotate in the opposite direction to intended.

A similar bug was present in 2.80 https://developer.blender.org/T66527 but this had a workaround that if you set the orient matrix in a script it would force the rotation to be in the correct direction. This workaround no longer works.

This bug also effects mesh edit mode and pose mode!!!

Exact steps for others to reproduce the error

Launch startup file.
Go into top view
Go into orthographic mode.
Select default cube
Press "R" on the keyboard and enter 15

Result:
Cube rotates -15 degrees rather than +15 degrees.

Alternatively:

Launch startup file.
Go into top view
Go into orthographic mode.
Select default cube

then in the console:

bpy.ops.transform.rotate(value=0.261799)

Result:
Cube rotates -15 degrees rather than +15 degrees.

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.38 **Blender Version** Broken: version: 2.91.0, branch: master, commit date: 2020-11-25 08:34, hash: `0f45cab862` Worked: version: 2.90.1, branch: master, commit date: 2020-09-23 06:43, hash: `3e85bb34d0` **Short description of error** If a numeric figure is entered after pressing "R" to rotate an object by a set amount in object mode or if bpy.ops.transform.rotate is called via a script or the console, objects rotate in the opposite direction to intended. A similar bug was present in 2.80 https://developer.blender.org/T66527 but this had a workaround that if you set the orient matrix in a script it would force the rotation to be in the correct direction. This workaround no longer works. This bug also effects mesh edit mode and pose mode!!! **Exact steps for others to reproduce the error** Launch startup file. Go into top view Go into orthographic mode. Select default cube Press "R" on the keyboard and enter 15 Result: Cube rotates -15 degrees rather than +15 degrees. Alternatively: Launch startup file. Go into top view Go into orthographic mode. Select default cube then in the console: >>> bpy.ops.transform.rotate(value=0.261799) Result: Cube rotates -15 degrees rather than +15 degrees.

Richard Rose commented

2020-11-27 07:49:17 +01:00

Added subscriber: @richeyrose

blender-admin commented

2020-11-27 07:49:17 +01:00

#84858 was marked as duplicate of this issue

blender-admin commented

2020-11-27 07:49:17 +01:00

#83325 was marked as duplicate of this issue

Philipp Oeser commented

2020-11-27 13:44:01 +01:00

Added subscribers: @mano-wii, @lichtwerk

Philipp Oeser commented

2020-11-27 13:44:01 +01:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Philipp Oeser commented

2020-11-27 13:44:01 +01:00

Value-wise, this is actually the other way around:
In 2.90, if you type in {key R 15}, the cube would turn clockwise, but the value for Rotation Z would actually end up -15
In 2.91, if you type in {key R 15}, the cube would turn counter-clockwise, but the value for Rotation Z would actually end up 15

@mano-wii, you have done some changes here, I guess this is now expected behavior?

Value-wise, this is actually the other way around: In 2.90, if you type in {key R 15}, the cube would turn **clockwise**, but the value for Rotation Z would actually end up `-15` In 2.91, if you type in {key R 15}, the cube would turn **counter-clockwise**, but the value for Rotation Z would actually end up `15` @mano-wii, you have done some changes here, I guess this is now expected behavior?

Germano Cavalcante commented

2020-11-27 13:58:54 +01:00

Changed status from 'Needs Developer To Reproduce' to: 'Confirmed'

Germano Cavalcante commented

2020-11-27 13:58:54 +01:00

This change was intentional in order to maintain a standard for viewport orientation.
The Z axis of the viewport matrix points to the other side, so this negative angle is like expected.
Before there were conditions and adjustments depending on the transform mode and this was becoming a growing snowball.
But I'll take a look again and see if I can work around this problem in another way.

This change was intentional in order to maintain a standard for viewport orientation. The Z axis of the viewport matrix points to the other side, so this negative angle is like expected. Before there were conditions and adjustments depending on the transform mode and this was becoming a growing snowball. But I'll take a look again and see if I can work around this problem in another way.

blender-admin commented

2020-11-27 14:41:33 +01:00

This issue was referenced by 87310c0af1

This issue was referenced by 87310c0af164db5b7f3de33cf8612c4f490b112d

blender-admin commented

2020-11-27 14:41:33 +01:00

This issue was referenced by f9e994d0f4

This issue was referenced by f9e994d0f463abb87761591e30c47a9613be6cca

Germano Cavalcante commented

2020-11-27 14:52:25 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Germano Cavalcante closed this issue