Strange snapping behaviour #109346

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opened 2023-06-25 18:57:12 +02:00 by Ian Jones · 8 comments

Ian Jones commented

2023-06-25 18:57:12 +02:00

System Information
Operating system: macOS-14.0-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 Max 1.2

Blender Version
Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-06-24 19:39, hash: c8f434e685e5
Worked: 4.0 pre 25 June.

Short description of error

Snapping to vertex is not working and placing it in strange locations.

Try to snap a mesh element to another vertex using snap to active. Depending on which vertex is chosen as the destination it appears in strange locations outside of the mesh. See screen recording. Used factory setting.

at version e0e3650495, it breaks in a way that's consistent with the attached video

at version 39386175e1, it "sort of breaks": looks like it will eventually snap correctly if the pointer is closer to a vertex. If slightly away from the vertex it appears to be snapping to somewhere else, not entirely consistent with what's shown in the video, but can still see it's broken.

Exact steps for others to reproduce the error

Open attached file
Edit more, select the "wire" part.
Try to snap the "wire" part to vertices on the cube
The "wire" part jumps to some other places

**System Information** Operating system: macOS-14.0-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M1 Max 1.2 **Blender Version** Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-06-24 19:39, hash: `c8f434e685e5` Worked: 4.0 pre 25 June. **Short description of error** Snapping to vertex is not working and placing it in strange locations. Try to snap a mesh element to another vertex using snap to active. Depending on which vertex is chosen as the destination it appears in strange locations outside of the mesh. See screen recording. Used factory setting. at version e0e3650495, it breaks in a way that's consistent with the attached video at version 39386175e1, it "sort of breaks": looks like it will eventually snap correctly if the pointer is closer to a vertex. If slightly away from the vertex it appears to be snapping to somewhere else, not entirely consistent with what's shown in the video, but can still see it's broken. **Exact steps for others to reproduce the error** - Open attached file - Edit more, select the "wire" part. - Try to snap the "wire" part to vertices on the cube - The "wire" part jumps to some other places

Snap error.blend

839 KiB

Snap error.mp4

2.2 MiB

Ian Jones added the

labels 2023-06-25 18:57:13 +02:00

Iliya Katushenock added the

label 2023-06-25 19:07:06 +02:00

YimingWu commented

2023-06-26 04:33:32 +02:00

Member

Can confirm 39386175e1 is broken.

From testing, looks like it will eventually snap correctly if the pointer is closer to a vertex. If slightly away from the vertex it appears to be snapping to somewhere else, not entirely consistent with what's shown in the video, but can still see it's broken.

Can confirm 39386175e1f7 is broken. From testing, looks like it will eventually snap correctly if the pointer is closer to a vertex. If slightly away from the vertex it appears to be snapping to somewhere else, not entirely consistent with what's shown in the video, but can still see it's broken.

YimingWu added

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labels 2023-06-26 05:13:36 +02:00

YimingWu added

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labels 2023-06-26 05:18:44 +02:00

Pratik Borhade commented

2023-06-26 05:40:39 +02:00

Member

Unable to replicate this.
Perhaps affected by f2fb22b94b

Unable to replicate this. Perhaps affected by f2fb22b94b8499422483708f55c3ec053b322976

YimingWu commented

2023-06-26 05:48:01 +02:00

Member

From here it seems to be caused by 9cbe156d6a , that's the only one I reverted and works fine now.

Seems that I can't stably reproduce the issue, will test more and see what's the problem

From here it seems to be caused by 9cbe156d6a938c6464fa4219a8 , that's the only one I reverted and works fine now. Seems that I can't stably reproduce the issue, will test more and see what's the problem

Pratik Borhade commented

2023-06-26 05:53:52 +02:00

Member

From here it seems to be caused by 9cbe156d6a , that's the only one I reverted and works fine now.

Strange. In commit history, 9cbe156d6a is after c8f434e685e5 (hash mentioned in the report)

> From here it seems to be caused by 9cbe156d6a938c6464fa4219a8 , that's the only one I reverted and works fine now. Strange. In commit history, `9cbe156d6a` is after `c8f434e685e5` (hash mentioned in the report) [image](/attachments/a11d3a11-9b61-4a31-9c47-def6cbf44bfe)

182 KiB

YimingWu commented

2023-06-26 06:04:01 +02:00

Member

@PratikPB2123 Nope it's not 9cbe156d6a , it just seems I'm not able to replicate the issue in a stable way...

@PratikPB2123 Nope it's not 9cbe156d6a , it just seems I'm not able to replicate the issue in a stable way...

YimingWu commented

2023-06-26 06:24:44 +02:00

Member

e0e3650495 breaks in a way that's consistent with the attached video

39386175e1 "sort of breaks" in the way described above

e0e36504950e breaks in a way that's consistent with the attached video 39386175e1f7b841c7450365defbe2caece4ad9b "sort of breaks" in the way [described above](https://projects.blender.org/blender/blender/issues/109346#issuecomment-966273)

Pratik Borhade commented

2023-06-26 07:07:36 +02:00

Member

e0e3650495 breaks in a way that's consistent with the attached video

That commit includes changes in UV operator. Not sure whether it introduced the issue :/
@ChengduLittleA , btw, could you update reproducing steps in report description? :)

> e0e3650495 breaks in a way that's consistent with the attached video That commit includes changes in UV operator. Not sure whether it introduced the issue :/ @ChengduLittleA , btw, could you update reproducing steps in report description? :)

YimingWu commented

2023-06-26 12:47:26 +02:00

Member

cc @mano-wii

Germano Cavalcante referenced this issue

2023-06-26 14:04:26 +02:00

Snap Base wonky on official builds #109368

Germano Cavalcante referenced this issue from a commit

2023-06-26 16:04:01 +02:00

Fix #109346: Strange snapping behaviour

Germano Cavalcante closed this issue

2023-06-26 16:04:02 +02:00

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