Page MenuHome

Bug with "Transfer: Edge Slide" with 2 edge loops selected
Open, Confirmed, MediumPublic

Description

System Information
Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86

Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-11 13:50, hash: rB06312c6d2db8
Worked: (optional)

Short description of error
[Please fill out a short description of the error here]
On sliding the 2 particular selected edge loops, both loops move unexpectedly while "Show Transparency/X-Ray" is disabled.

Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]

Based on:
[the attached "bug_report 2019_07_12 IST_23_00.blend" file and the auto-fetched system info]

Procedure:
1* Open the attached file (tested only on the mentioned PC+software configuration)


2* With cursor in either of the view, press 'g' twice or search for "Edge Slide" and select "Transfer: Edge Slide".
3* Move the cursor, and see the edge loops moving.
4* To come out of the Edge slide tool, press "Escape".
5* Repeat from step 2 with cursor in other view.

Observation:
In step 2, If the cursor was in:

  • the left hand view (X-ray/transparency disabled), both the edge loops move differently.
  • the right hand view (transparency enabled), both the loops move together as expected.

Details

Type
Bug

Event Timeline

Dalai Felinto (dfelinto) triaged this task as Confirmed, Medium priority.

Confirmed indeed.

For the records, if I change the view angle a bit this works.

I have never reported a bug before (for any project, ever), and I dont know if i should be or not, but I am a little bit excited that even after being such a newcomer to Blender and bug reporting in general, my report was understandable and not missing something. I was a little bit afraid to post it when I read the instructions saying to use latest "daily" build only.

Anyways, @Dalai Felinto (dfelinto) I would like to know, if possible, that what can cause a particular selection to behave differently? As far as I can guess, I think it is because the particular view angle and type is somehow being interpreted in a different context and then transformed accordingly. Can this be so, and is it so?

what can cause a particular selection to behave differently? As far as I can guess, I think it is because the particular view angle and type is somehow being interpreted in a different context and then transformed accordingly. Can this be so, and is it so?

Not sure, but based on mano-wii's patch the occluded geometry is handled differently than the non-occluded. So there is that.