Bug report #12441: topological editing broken(?) - QGIS Application - QGIS Issue Tracking

Bug report #12441

topological editing broken(?)

Added by Giovanni Manghi over 9 years ago. Updated about 9 years ago.

Status:	Closed
Priority:	Severe/Regression
Assignee:	-
Category:	Digitising
Affected QGIS version:	2.8.1	Regression?:	No
Operating System:	Ubuntu	Easy fix?:	No
Pull Request or Patch supplied:	No	Resolution:	not reproducable
Crashes QGIS or corrupts data:	No	Copied to github as #:	20610

Description

Please have a look at the attached screencast.

The very same project (so same data, same snapping options, etc.) is open under both Linux (Ubuntu 14.04) and Windows using QGIS 2.8.1 in both cases.

As you can see topological editing under Linux does not works, while under Windows is ok.

Under Linux is not always broken, sometimes it works others don't, is anyway pretty easy to replicate.

I also attach the sample project/data.

bug_topological_editing.mp4 (3.79 MB) Giovanni Manghi, 2015-03-24 12:57 PM

bug_topological_editing_take2.mp4 (2.7 MB) Giovanni Manghi, 2015-03-24 01:19 PM

teste_snapping.zip (96.9 KB) Giovanni Manghi, 2015-03-25 06:07 AM

vert15_right.png (255 KB) Giovanni Manghi, 2015-03-25 06:07 AM

vert45_left.png (262 KB) Giovanni Manghi, 2015-03-25 06:07 AM

History

#1 Updated by Giovanni Manghi over 9 years ago

File bug_topological_editing_take2.mp4 added

very odd, see also the second attached screencast: if before moving the node that does not respect the topological editing I move another one that works ok, then moving again the first one is ok... Sometimes it also seems that (working or not) depends just on the scale... Honestly I'm baffled by this bug, hope someone can sort it out.

#2 Updated by Jürgen Fischer over 9 years ago

Subject changed from topological editing broke under Linux to topological editing broken under Linux

#3 Updated by Giovanni Manghi over 9 years ago

File deleted (~~teste_snapping.zip~~)

#4 Updated by Giovanni Manghi over 9 years ago

File vert15_right.png added
File vert45_left.png added
File teste_snapping.zip added

it seems to depend on what vertex is dragged. If is dragged the one of the right polygon than all ok, if the one of the left polygon then not ok... but again this happen only on linux, not windows.