3D Viewport: Jump, when mouse crosses a window corner #74918

New Issue

Gabriel · 2020-03-19T10:35:06+01:00

Gabriel commented

2020-03-19 10:35:06 +01:00

System Information
Operating system: Windows 10, 64bit
Graphics card: none (CPU)

Blender Version
Broken: (v 2.82a) and also (v 2.83 Alpha, Date 2020-03-18 17:16, Hash c9c08dc7c8)
Worked: Never

Short description of error
Possibly any operation in 3D Viewport jumps, if the mouse pointer crosses a corner (not only an edge) of the 3D Viewport window.

Typical scenario: I have zoomed in a lot to edit a detail, and I'm moving an object to the screen center using the Move the view tool. If my mouse cursor crosses the 3D Viewport window corner, the object jumps out of sight (disappears).

Exact steps for others to reproduce the error

Start Blender
Choose 2D Animation on the splash screen (-> 2D Animation starts in camera view and draw mode)
Zoom out as far as possible (-> you'll see things jump, and not just dissapear)
Enable Display Cursor (-> seeing the cursor makes it easier to intentionally hit the corner)
Press the Move the view tool to move the camera view.
Drag the cursor across the window corner with reasonable speed (-> fast to easier hit the corner, slow to distinguish a jump from jerky mouse movement)
It's not quite easy to exactly hit the window corner. I correct my motion, if I see the cursor pass in the top left or bottom right corner. With practice, I get a jump about every 10th time, I pass the corner.
If a jump occurs, the (fully zoomed out) camera view suddenly jumps to one of the edges of the window.

Note:
This happens to me not only with draw mode, camera view and Move the view tool, but likely with any mode, view and tool of the 3D Viewport, that sometimes makes me cross the window corner. I did observe it using

Move the view tool
Zoom in/out the view tool
G-key command to move things
in
camera view
3d view
draw mode
edit mode
maybe object mode

**System Information** Operating system: Windows 10, 64bit Graphics card: none (CPU) **Blender Version** Broken: (v 2.82a) and also (v 2.83 Alpha, Date 2020-03-18 17:16, Hash c9c08dc7c873) Worked: Never **Short description of error** Possibly any operation in 3D Viewport jumps, if the mouse pointer crosses a corner (not only an edge) of the 3D Viewport window. Typical scenario: I have zoomed in a lot to edit a detail, and I'm moving an object to the screen center using the `Move the view` tool. If my mouse cursor crosses the 3D Viewport window corner, the object jumps out of sight (disappears). **Exact steps for others to reproduce the error** - Start Blender - Choose 2D Animation on the splash screen (-> 2D Animation starts in camera view and draw mode) - Zoom out as far as possible (-> you'll see things jump, and not just dissapear) - Enable Display Cursor (-> seeing the cursor makes it easier to intentionally hit the corner) ![Display Cursor.png](https://archive.blender.org/developer/F8415334/Display_Cursor.png) - Press the `Move the view` tool to move the camera view. - Drag the cursor across the window corner with reasonable speed (-> fast to easier hit the corner, slow to distinguish a jump from jerky mouse movement) ![Produce Jump.png](https://archive.blender.org/developer/F8415349/Produce_Jump.png) - It's not quite easy to exactly hit the window corner. I correct my motion, if I see the cursor pass in the top left or bottom right corner. With practice, I get a jump about every 10th time, I pass the corner. ![Cursor Motion.png](https://archive.blender.org/developer/F8415408/Cursor_Motion.png) - If a jump occurs, the (fully zoomed out) camera view suddenly jumps to one of the edges of the window. Note: This happens to me not only with `draw mode`, `camera view` and `Move the view` tool, but likely with any mode, view and tool of the 3D Viewport, that sometimes makes me cross the window corner. I did observe it using - Move the view tool - Zoom in/out the view tool - G-key command to move things in - camera view - 3d view - draw mode - edit mode - maybe object mode

Gabriel commented

2020-03-19 10:35:06 +01:00

Added subscriber: @gabi2002

blender-admin commented

2020-03-19 10:35:06 +01:00

#80418 was marked as duplicate of this issue

Richard Antalik commented

2020-03-23 14:14:44 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Hans Goudey commented

2020-09-08 20:28:34 +02:00

Added subscribers: @iss, @HooglyBoogly

Hans Goudey commented

2020-09-08 20:28:34 +02:00

Thanks for the report!

I'm not sure I can reproduce this. Although maybe I don't understand the steps well enough.

@iss or @gabi2002, do you mind providing a short video of the issue?

Thanks for the report! I'm not sure I can reproduce this. Although maybe I don't understand the steps well enough. @iss or @gabi2002, do you mind providing a short video of the issue?

Richard Antalik commented

2020-09-09 02:40:18 +02:00

0001-5700.mp4

It is a bit tricky, but issue is still there.

[0001-5700.mp4](https://archive.blender.org/developer/F8856067/0001-5700.mp4) It is a bit tricky, but issue is still there.

Bastien Montagne commented

2020-10-14 13:39:05 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2020-10-14 13:39:05 +02:00

Here on linux I can even reproduce it on a single axis (any border, not only corners). I think this is related to hdpi mice, the current time check is a bit to strict in those cases and can still allow for double-wraps sometimes.

D9209 fixes the issues for me on Linux (X11).

Other OSs are still to be addressed, looks like X11 backend is the only one to use that time check on events to avoid doubles? Also curious whether e.g. OSX (cocoa backend) exhibits the same issue?

Here on linux I can even reproduce it on a single axis (any border, not only corners). I think this is related to hdpi mice, the current time check is a bit to strict in those cases and can still allow for double-wraps sometimes. [D9209](https://archive.blender.org/developer/D9209) fixes the issues for me on Linux (X11). Other OSs are still to be addressed, looks like X11 backend is the only one to use that time check on events to avoid doubles? Also curious whether e.g. OSX (cocoa backend) exhibits the same issue?

Philipp Oeser commented

2020-11-27 15:42:56 +01:00

Added subscribers: @ajaybiswas, @lichtwerk, @ankitm

Samuel Sebastian Tekrenius commented

2021-04-30 20:38:17 +02:00

Added subscriber: @AgentSam-2

Gary christopher commented

2022-01-06 18:08:16 +01:00

Added subscriber: @blenderenjoyer22

Gary christopher commented

2022-01-06 18:08:16 +01:00

issue still happens on windows 10 21h1 19043.1415 montior resolution 1440p/1080 didnt make a difference, mouse dpi 1600/400 didnt make a difference, mouse polling rate from 1000hz-> 125hz seemed to make it happen less frequently

edit: newest blender alpha build:
https://builder.blender.org/download/daily/blender-3.1.0-alpha+master.1d9bac7d921f-windows.amd64-release.zip

issue still happens on windows 10 21h1 19043.1415 montior resolution 1440p/1080 didnt make a difference, mouse dpi 1600/400 didnt make a difference, mouse polling rate from 1000hz-> 125hz seemed to make it happen less frequently edit: newest blender alpha build: https://builder.blender.org/download/daily/blender-3.1.0-alpha+master.1d9bac7d921f-windows.amd64-release.zip

Beorn Leonard commented

2022-05-18 10:44:19 +02:00

Added subscriber: @BeornLeonard

Beorn Leonard commented

2022-05-18 10:45:27 +02:00

Is there any progress on this? Why is it a low priority?
It's seriously irritating!!

Is there any progress on this? Why is it a low priority? It's seriously irritating!!

Philipp Oeser removed the

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3D Viewport: Jump, when mouse crosses a window corner #74918