Shapekey Datablocks Unable to be Deleted #106058

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Haggets · 2023-03-23T20:56:41+01:00

Haggets commented

2023-03-23 20:56:41 +01:00

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: AMD Radeon(TM) Graphics ATI Technologies Inc. 4.5.0 Core Profile Context 23.3.1.230305

Blender Version
Broken: version: 3.4.1, branch: blender-v3.4-release, commit date: 2022-12-19 17:00, hash: rB55485cb379f7

Short description of error
bpy.context.object.shape_key_clear() clears the object of its shapekeys and also removes the shapekey datablock in the process, but for some reason, when shape_key_clear() is used in this chain of commands it seemingly separates the shapekey datablock from their mesh datablock which causes them to remain in the scene without any way to delete them (As bpy.data.shape_keys.remove does not currently exist unlike other data types), which increases the size of the blend file dramatically with objects that have a lot of shapekeys.

Exact steps for others to reproduce the error

Select an object with some shapekeys and modifiers.
Run the script.

Now if you click on Purge it will show the shapekey datablocks on the "Proceed" pop up even though they're not in the list and don't have any mesh connected to them anymore, without a way to individually remove them through code (Aside from using bpy.ops.outliner.orphans_purge() which is not ideal).

Through testing i've found out that if shape_key_clear() is commented out no shapekey datablocks will show up in the purge list, but will cause the plugin to not do its intended purpose. I've attached a blend file that contains everything already setup.

Finally, i'd like to comment that this script is not mine, i've only repurposed bits of it for the purposes of another addon, the github page can be found here.

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: AMD Radeon(TM) Graphics ATI Technologies Inc. 4.5.0 Core Profile Context 23.3.1.230305 **Blender Version** Broken: version: 3.4.1, branch: blender-v3.4-release, commit date: 2022-12-19 17:00, hash: `rB55485cb379f7` **Short description of error** bpy.context.object.shape_key_clear() clears the object of its shapekeys and also removes the shapekey datablock in the process, but for some reason, when shape_key_clear() is used in this chain of commands it seemingly separates the shapekey datablock from their mesh datablock which causes them to remain in the scene without any way to delete them (As bpy.data.shape_keys.remove does not currently exist unlike other data types), which increases the size of the blend file dramatically with objects that have a lot of shapekeys. **Exact steps for others to reproduce the error** 1. Select an object with some shapekeys and modifiers. 2. Run the script. Now if you click on Purge it will show the shapekey datablocks on the "Proceed" pop up even though they're not in the list and don't have any mesh connected to them anymore, without a way to individually remove them through code (Aside from using bpy.ops.outliner.orphans_purge() which is not ideal). Through testing i've found out that if shape_key_clear() is commented out no shapekey datablocks will show up in the purge list, but will cause the plugin to not do its intended purpose. I've attached a blend file that contains everything already setup. Finally, i'd like to comment that this script is not mine, i've only repurposed bits of it for the purposes of another addon, the github page [can be found here.](https://github.com/greisane/gret)

ShapekeyDatablocks.blend

3.5 MiB

Haggets added the

labels 2023-03-23 20:56:42 +01:00

Pratik Borhade commented

2023-03-24 05:59:14 +01:00

Hi, thanks for the report. If I run C.active_object.shape_key_clear() directly in python console, it removes all shape key data from the object and they neither appear when Purge operation is called.
So some code in the script is not deleting shape-key data entirely which is not the scope of bug tracker.
For help, please try one of the community websites: https://www.blender.org/community/
If you think you found a bug, please submit a new report and carefully follow the instructions. Be sure to provide system information, Blender version, and a .blend file with exact steps to reproduce the problem.
Feel free to comment if there is misunderstanding

Hi, thanks for the report. If I run `C.active_object.shape_key_clear()` directly in python console, it removes all shape key data from the object and they neither appear when Purge operation is called. So some code in the script is not deleting shape-key data entirely which is not the scope of bug tracker. For help, please try one of the community websites: https://www.blender.org/community/ If you think you found a bug, please submit a new report and carefully follow the instructions. Be sure to provide system information, Blender version, and a .blend file with exact steps to reproduce the problem. Feel free to comment if there is misunderstanding

👍 1

Pratik Borhade closed this issue

2023-03-24 05:59:15 +01:00

Blender Bot added

and removed

labels 2023-03-24 05:59:16 +01:00

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