Clipped View Curve Creation

Hey there! Enjoying the WIP builds so far, particularly the improved performance when working with large point-cloud objects.

One issue I seem to have (and have been unable to track down here, or at least, am using the wrong terms when doing so) revolves around drawing curve objects in clipped views; for whatever reason, when drawing a line, arc, curve et. al. in a clipped view, the object under construction is not visible in that view – but it is in any other unclipped views. Moreover, the object is visible after creation.

Obviously this creates some headaches in object construction. Any ideas?

Hi Christopher - so far it’s the opposite (and expected, I would say) behavior here - in drawing a curve on the clipped side of a clipping plane, I can see the curve while drawing it but it is clipped (disappears) once the command ends.

Is the problem you’re reporting visible in any display mode?



Seemed to be all display modes for me, or at least wireframe and rendered.

Would providing an image/video of the problem help at all?

@Christopher_A_Daily Yes I believe it would.


An added wrinkle has surfaced – it turns out that 90% of the time when I am using clipping planes I am actively clipping point cloud objects. I noticed yesterday that when I have point clouds off, the behavior returns to normal. I have attached a link to a video showing the issue.

Clipping Plane Rendering

Hi Christopher - on a different machine (Intel graphics) , I see the curve drawing process is clipped but only on the clipped side of the plane. On my primary machine, it behaves as expected. What video card do you have - can you run SystemInfo at the Rhino command line and copy/paste the results here?


Rhino 6 SR0 2017-10-17 (Rhino WIP, 6.0.17290.10121, Git hash:master @ 9cecfdbffae762d841b794af05cfb5ebee39222a)

Windows 7 SP1 (Physical RAM: 16Gb)

GeForce GTX 760 Ti OEM/PCIe/SSE2 (OpenGL ver:4.5.0 NVIDIA 347.52)

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 8x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: Height

Vendor Name: NVIDIA Corporation
Render version: 4.5
Shading Language: 4.50 NVIDIA
Driver Date: NA
Driver Version: NA
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 2 GB

C:\Program Files\Rhino WIP\Plug-ins\Commands.rhp “Commands”
C:\Program Files\Rhino WIP\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino WIP\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI”
C:\Program Files\Rhino WIP\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino WIP\Plug-ins\CyclesForRhino.rhp “Cycles for Rhino”
C:\Program Files\Rhino WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles”
C:\Program Files\Rhino WIP\Plug-ins\Toolbars\Toolbars.rhp “Toolbars”
C:\Program Files\Rhino WIP\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino WIP\Plug-ins\Displacement.rhp “Displacement”

Hi Christopher - thanks - I cannot repeat this here, pointcloud or no pointcloud… I’m on Windows 10, I’ll see if I can get someone to test on 7.


Hi @Christopher_A_Daily,

When was the last time you updated your graphics drivers? It seems like SystemInfo wasn’t able to determine your driver date, but that might be related to running Windows 7.

I would strongly recommend going to the Nvidia website to download the very latest.