Often I create some objects with planar surfaces and I assemble these on similar face (for example on the 2 following images, there are two tetrahedrons with a identical triangle) .
To better visualize the objects , I choose to use the option Color Backfaces but in this case there are many artefacts on the common face.
I want, in the following example, the common triangle to be a single color on both sides (color of the backface) !
I tried the command Join and Union and I tried to transform Nurbs to Mesh but without succes.
Is there a way to remove these artifacts ?
I suspect you have some small edge loops that are confusing the render mesh creation.
That is a guess without a small 3dm file with the problem.
Thank you for your answer .
In this example ( Test for colored backface.3dm (152.8 KB) ) there are only 2 pentagonal pyramids and there are no small edge loops.
Windows 10.0.19043 SR0.0 or greater (Physical RAM: 7.9Gb)
Computer platform: DESKTOP
Standard graphics configuration.
Primary display and OpenGL: Intel(R) HD Graphics (Intel) Memory: 2GB, Driver date: 5-19-2016 (M-D-Y). OpenGL Ver: 1.1.0
> Integrated graphics device with 2 adapter port(s)
- Windows Main Display attached to adapter port #0
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 0.0 (primary GPU’s maximum)
Anti-alias mode: None
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High
Vendor Name: Microsoft Corporation
Render version: 0.0
Shading Language: Not supported
Driver Date: 5-19-2016
Driver Version: 126.96.36.19959
Maximum Texture size: 1024 x 1024
Z-Buffer depth: 32 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 2108 MB
Your Intel display adapter and driver do not support Rhino’s minimum OpenGL requirements.
This may not be fixable.
If you’re serious about running Rhino, you’ll need a better setup.
Since it is a Desktop, you might be able to add a Nvidia GeForce RTX card to get it to work.
While you’re at it, add at least another 8GB System RAM
Before asking for help on the official Rhino forum, you really should buy yourself a legit version of Rhino…
But what you are seeing is called z-fighting - google it.