mesh.select_linked_pick "by Seam" produces random selections #48085

New Issue

James Guilford · 2016-04-08T09:14:38+02:00

James Guilford commented

2016-04-08 09:14:38 +02:00

This has happened for quite a while... mesh.select_linnked_pick (seams) will correctly select a UV island the first time, but subsequent selections will pick random UV islands without respecting seams. 1) Select Linked in edit mode (mesh.select_linked_pick) - hotkey L 2) Using F6 menu, switch the select mode to "Seams" 3) The mesh should have changed its selection to the UV island under mouse pointer 4) Now select more uv islands. usually it selects some random UV's after the first island is selected.

<Blender Version> This has happened for quite a while... <Description> mesh.select_linnked_pick (seams) will correctly select a UV island the first time, but subsequent selections will pick random UV islands without respecting seams. <Steps to Reproduce> 1) Select Linked in edit mode (mesh.select_linked_pick) - hotkey L 2) Using F6 menu, switch the select mode to "Seams" 3) The mesh should have changed its selection to the UV island under mouse pointer 4) Now select more uv islands. usually it selects some random UV's after the first island is selected.

James Guilford commented

2016-04-08 09:14:38 +02:00

Changed status to: 'Open'

James Guilford commented

2016-04-08 09:14:38 +02:00

Added subscriber: @fjg3d

Bastien Montagne commented

2016-04-08 16:08:22 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2016-04-08 16:08:22 +02:00

Please follow our submission template and guidelines and make a complete, valid bug report, with required info, precise description of the issue, precise steps to reproduce it, small and simple .blend and/or other files to do so if needed, etc.

Please follow our submission template and guidelines and make a complete, valid bug report, with required info, precise description of the issue, precise steps to reproduce it, **small and simple** .blend and/or other files to do so if needed, etc.

James Guilford commented

2016-04-12 18:01:09 +02:00

System Information
Windows 10
GeForce Titan

Blender Version
2.77 2050ecc

Short description of error
When using 'select linked' (hotkey L), its impossible to select only two regions (seams or uv), if they share a seam

Exact steps for others to reproduce the error
Select a seam region with 'select linked' (L) set to seams.
When a second seam region is selected (that shares an seam with the first), then all regions that share a seam with first selected region will also be selected.
select_by_seams_uvs_bug.blend

See attached file, I've used a white colored grease pencil to indicate the seam regions, and the order in which to select them. The unexpected behavior is indicated in green.

**System Information** Windows 10 GeForce Titan **Blender Version** 2.77 2050ecc **Short description of error** When using 'select linked' (hotkey L), its impossible to select only two regions (seams or uv), if they share a seam **Exact steps for others to reproduce the error** Select a seam region with 'select linked' (L) set to seams. When a second seam region is selected (that shares an seam with the first), then all regions that share a seam with first selected region will also be selected. [select_by_seams_uvs_bug.blend](https://archive.blender.org/developer/F302512/select_by_seams_uvs_bug.blend) ![blender_2016-04-12_08-25-21.jpg](https://archive.blender.org/developer/F302513/blender_2016-04-12_08-25-21.jpg) See attached file, I've used a white colored grease pencil to indicate the seam regions, and the order in which to select them. The unexpected behavior is indicated in green.

Vuk Gardašević commented

2016-04-12 19:07:51 +02:00

Added subscriber: @VukGardasevic

Vuk Gardašević commented

2016-04-12 19:07:51 +02:00

I can recreate the issue. Amd X3 455, R7 360, Win 7

Looks like pressing L on an already selected UV island works correctly only in Face selection mode. Both Vertex and Edge mode produce selections that are outside the initial island that share the selected edges/ vertices. By pressing L multiple times the selection grows until the connected geometry is selected.

I can recreate the issue. Amd X3 455, R7 360, Win 7 Looks like pressing L on an already selected UV island works correctly only in Face selection mode. Both Vertex and Edge mode produce selections that are outside the initial island that share the selected edges/ vertices. By pressing L multiple times the selection grows until the connected geometry is selected.

James Guilford commented

2016-04-13 23:56:02 +02:00

Well, maybe behaving differently depending on what is selected is intentional, I just didn't try face mode. I checked the manual online before posting this issue, but didn't see anything specific about whether a vertex, edge, or face is selected.

I wouldn't mind updating the manual if this behavior is actually intentional (although I'm not yet set up to do so).

Well, maybe behaving differently depending on what is selected is intentional, I just didn't try face mode. I checked the manual online before posting this issue, but didn't see anything specific about whether a vertex, edge, or face is selected. I wouldn't mind updating the manual if this behavior is actually intentional (although I'm not yet set up to do so).

Bastien Montagne commented

2016-04-22 19:25:48 +02:00

Added subscriber: @ideasman42

Bastien Montagne commented

2016-04-22 19:25:48 +02:00

This is indeed unexpected behavior, select linked uses active item, so it should only select island of new active item, not all around it… @ideasman42, think this one is for you?

Campbell Barton was assigned by Bastien Montagne

2016-04-22 19:26:05 +02:00

Campbell Barton commented

2016-04-25 10:41:40 +02:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2016-04-25 10:41:40 +02:00

blender-admin commented

2016-04-25 10:44:11 +02:00

This issue was referenced by 935998312c

This issue was referenced by 935998312c44300385588c466ef31fa9e85d385f

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mesh.select_linked_pick "by Seam" produces random selections #48085