Hi,
I noticed that the curve thickness in Wireframe mode thins when zooming in (images attached). Tried both Direct3D and OpenGL, updated Nvidia driver today and running the latest build of Rhino WIP, Rhino 9 SR0 2026-5-12 (Rhino WIP, 9.0.26132.12305.
In this file, I have set the Curve Settings>Scale to 3
Thanks,
Hi Sach -
From those images, it would appear that they thicken when zooming in.
At any rate, that’s not something I see on my end.
Please run the Rhino SystemInfo command and copy-paste its output here.
-wim
Rhino 9 SR0 2026-5-12 (Rhino WIP, 9.0.26132.12305, Git hash:master @ e4ca4a25a2667146cdb0b9e48607c637ec745bdb)
License type: Commercial, build 2026-05-12
License details: Cloud Zoo
Expires on: 2026-06-26
Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 32GB)
.NET 10.0.8
Computer platform: LAPTOP - Plugged in [99% battery remaining]
Hybrid graphics configuration using DirectX
Primary display: NVIDIA RTX A1000 Laptop GPU (NVidia) Memory: 4GB, Driver date: 4-23-2026 (M-D-Y).
> Integrated accelerated graphics device (shares primary device ports)
- Laptop’s primary display device
Secondary graphics devices.
Intel(R) Iris(R) Xe Graphics (Intel) Memory: 2GB, Driver date: 1-15-2026 (M-D-Y).
> Integrated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port
DirectX Settings
Safe mode: Off
OpenBLAS: OpenBLAS 0.3.30 DYNAMIC_ARCH NO_AFFINITY Haswell MAX_THREADS=64.
Rhino plugins that do not ship with Rhino
C:\Users\Sachin\AppData\Roaming\McNeel\Rhinoceros\9.0\Plug-ins\BoltGen_py (283dd9db-bcac-ab3c-9b9a-6f41eaf6160f)\1.0.6642.13019\BoltGen_py.rhp “BoltGen_py” 1.0.0.0
C:\Program Files\Common Files\McNeel\Rhinoceros\7.0\Plug-ins\KeyShotRhinoPlugin (78243fe3-17a0-4865-b713-88b4c224c48c)\1.5.0.0\KeyShotRhinoPlugin\KeyShotRhinoPlugin.rhp “KeyShotRhinoPlugin” 1.0.0.0
Rhino plugins that ship with Rhino
C:\Program Files\Rhino 9 WIP\Plug-ins\SolidTools.rhp “SolidTools”
C:\Program Files\Rhino 9 WIP\Plug-ins\Commands.rhp “Commands” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoBonusTools.rhp “Rhino Bonus Tools”
C:\Program Files\Rhino 9 WIP\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 9 WIP\Plug-ins\UpdatesAndStatistics\UpdatesAndStatistics.rhp “UpdatesAndStatistics” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 9 WIP\Plug-ins\MeshCommands.rhp “MeshCommands” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\export_STEP.rhp “STEP Export”
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 9 WIP\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 9 WIP\Plug-ins\Calc.rhp “Calc”
C:\Program Files\Rhino 9 WIP\Plug-ins\SectionTools.rhp “SectionTools”
C:\Program Files\Rhino 9 WIP\Plug-ins\NamedPositions.rhp “Named Position”
Hi Sach -
Grasping at straws, could you post a file in which you see this on your system and the custom display mode that you are using?
-wim
curve thickness issue.3dm (3.7 MB)
Thanks @wim
Hi Sach -
Just to make sure, did that make a difference here as well?
If not, please also post the custom display mode.
-wim
Hi Wim, the Video card update did not resolve this. It happens in Wireframe mode. Not sure what you mean by custom display mode, but I have the curve settings scale set at 3.
Hi Sach -
Is that the only difference that you made to the factory-default Wireframe display mode? To be sure, does anything change when you press the Restore Defaults button at the bottom with the Wireframe display mode selected in View -> Display Modes and then only change the Wireframe -> Objects -> Curves -> Scale setting?
This is what I see with that set at “3”:
-wim
I think so and the background colour.
I’ve restored to default and adjusted the curve scale back to 3. The problem persists in perspective view, although it seems okay in the elevation views..
Hi @wim
Do you have any further information about this? I’m working on a cross-section measuring around 25sqmm in another file and it just goes to a thin line quite soon when zooming closer.
I’ve checked the same file in Rhino 8 and the problem is not there.
Curve width = 3:
Curve width = 3 – but the lines becomes much thinner when zooming in:
Hi Sach -
I’ve had the display developers take an extra look here, and I’m afraid they don’t have any ideas about what might be going on.
Could you run the Reset command to reset Rhino to the factory defaults and see if that clears things up? When you use the Save Settings for Support… button, your settings will be saved and can then be restored using the OptionsMigrate command.
-wim
