[BUG] Changing OSnap with AutoCPlane on changes the view orientation

Rhino Rhino for Windows
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1

I have noticed that when using the AutoCPlane, changing the OSnap settings will make the views jump around

I can consistently reproduce the bug using these steps:

-Draw a random box
-Rotate it a bit(not sure if needed)
-Turn on AutoCPlane and set it to any side of the box
-Locking the AutoCPlane dose not seem to change anything.
-Change any of the OSnap checkboxes

This makes the Top and Front view jump around and centers the view (see video)

PS: i had written a whole different post, thinking it was the radius command that had the bug, until i noticed the radius command toggles the “cen” OSnap checkbox and tried changing it manually.

Regards,
Aske

2

Hi Aske Garling,

Can you run the SystemInfo command in Rhino and post the results. So far I am unable to repeat in a recent daily build (8.18)

1 Like
3

Rhino 8 SR17 2025-3-7 (Rhino 8, 8.17.25066.07001, Git hash:master @ b14fcd901289f8715631debb308bc919a4988e07)
License type: Commercial, build 2025-03-07
License details: Cloud Zoo

Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 31GB)
.NET 7.0.0

Computer platform: LAPTOP - Plugged in [95% battery remaining]

Standard graphics configuration.
Primary display and OpenGL: Intel(R) Arc™ Graphics (Intel) Memory: 2GB, Driver date: 6-10-2024 (M-D-Y). OpenGL Ver: 4.6.0 - Build 31.0.101.5590
> Integrated graphics device with 4 adapter port(s)
- Secondary monitor is laptop’s integrated screen or built-in port
- Windows Main Display attached to adapter port #1
- Secondary monitor attached to adapter port #2
Primary OpenGL: Intel(R) Arc™ Graphics (Intel) Memory: 2GB, Driver date: 6-10-2024 (M-D-Y). OpenGL Ver: 4.6.0 - Build 31.0.101.5590
> Integrated (slow!) graphics device with 4 adapter port(s)
- Secondary monitor is laptop’s integrated screen or built-in port
- Windows Main Display attached to adapter port #1
- Secondary monitor attached to adapter port #2

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
GPU Tessellation is: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: Intel
Render version: 4.6
Shading Language: 4.60 - Build 31.0.101.5590
Driver Date: 6-10-2024
Driver Version: 31.0.101.5590
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 2097148 KB

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.17.25066.7001
C:\Program Files\Rhino 8\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 8\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.17.25066.7001
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.17.25066.7001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.17.25066.7001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.17.25066.7001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.17.25066.7001
C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp “SectionTools”

4

Just remembered i have “Universal construction planes” turned on in modeling aids,
Turning it of makes the bug go away. so it may have something to do with that.

1 Like
5

That is key, i can repeat now. Its moving the plane around in those views for no apparent reason.

Thanks for reporting RH-86535!

1 Like
6

In Rhino 9 WIP it centers the CPlane in the active view

7

Glad to contribute, I’ll keep an eye on the bug rapport :slight_smile:

8

RH-86535 is fixed in Rhino 8 Service Release 19 Release Candidate