Is this old mesh problem being addressed?
Perhaps there’s something wrong with the surfaces (the model was drawn two years ago, I think) causing the “rays” in the picture above when I opened it in R6.12 (version downloaded today) but, I have any idea how to track down the cause of these artefacts.
I made a copy of the vertical surface-slice from the item on the left and extruded it (the item to the right) and the problem multiplied…
Since this is a a fairly isolated problem in the model I post the failing part here, if it can help tracking down the problem:
Mesh Problem - L70.3dm (240.7 KB)
I see these kind of crazy artefacts in Grasshopper too all the time. It’s not very entertaining.
Rhino 6 SR12 2019-1-29 (Rhino 6, 6.12.19029.6381, Git hash:master @ ae9d7fba5fda0b43002dc44a34e059a9a382db04) License type: Commercial, build 2019-01-29 License details: Stand-Alone Windows 10.0 SR0.0 or greater (Physical RAM: 32Gb) Machine name: RIL-POWER Non-hybrid graphics. Primary display and OpenGL: NVIDIA GeForce GTX 980 Ti (NVidia) Memory: 6GB, Driver date: 11-2-2018 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 416.81 OpenGL Settings Safe mode: Off Use accelerated hardware modes: On Redraw scene when viewports are exposed: On Anti-alias mode: 4x Mip Map Filtering: Linear Anisotropic Filtering Mode: Height Vendor Name: NVIDIA Corporation Render version: 4.6 Shading Language: 4.60 NVIDIA Driver Date: 11-2-2018 Driver Version: 220.127.116.111 Maximum Texture size: 16384 x 16384 Z-Buffer depth: 24 bits Maximum Viewport size: 16384 x 16384 Total Video Memory: 6 GB Rhino plugins C:\Program Files\Rhino 6\Plug-ins\Commands.rhp "Commands" 6.12.19029.6381 C:\Program Files\Rhino 6\Plug-ins\rdk.rhp "Renderer Development Kit" C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp "Rhino Render" C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp "RDK_EtoUI" 6.12.19029.6381 C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp "Renderer Development Kit UI" C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp "Snapshots" E:\__Install\_install_local\XNurbsRhino\XNurbsRhino.rhp "XNurbs" C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp "RhinoCycles" 6.12.19029.6381 C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp "Toolbars" 6.12.19029.6381 C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp "Displacement"