G’day everyone, When rebuilding a surface, which colour corresponds to U direction and which to V direction? [image] regards, Nick.

Hi Nick, RGB = XYZ = UVW Red is X or U direction Green is Y or V direction Blue is Z or W direction c.

mmm, the colours didn’t come through well in that screenshot. They are supposed to be red and green.

Thanks @clement , that seems logical.

Hi Nick - the colors actually follow the CPlane X and Y axis colors as set in Options > Appearance > Colors. -Pascal

This is an old topic, but I’m running into this question as well. If the preview arrow colors follow the Cplane, does that mean that sometimes U can be red and sometimes V can be red, depending on your Cplane? If so, is there another way to know which way is U and which way is V when you do a Rebu…

Hello - Rebuild should show you the U and V on the input surface- [image] U and V colors do not depend on the CPlane. -Pascal

Thanks. Then I misunderstood your previous reply, sorry. My suggestion was this: [image]

A strong support for @eobet ’s suggestion. Please colourcode the UV values in the rebuild (and similar) dialogues! Without colourcoding the red/green arrows are virtually useless.

+1 from me on the colour coding in the rebuild box. I have the attached graphic pinned to the wall next to my monitor to remind me: [rgb-xyz-uvw]

Since any feature in Rhino seems to take about 10 years to implement, I thought I’d at least mitigate this problem for me. Here’s what I changed the SelU and SelV toolbar icon to: [Select%20UV] It’s vector based so I could have worked a bit more on making it less aliased, but it works for me for …

UV symbol colours

Rhino Rhino for Windows

brian (Brian Gillespie) November 19, 2025, 6:20pm 14

RH-56040 is fixed in Rhino WIP

Topic		Replies	Views
UV Directions in Rebuild Command Rhino for Windows	1	730	October 23, 2013
UV color code Rhino for Windows	1	948	November 25, 2014
UV Indicators Rhino for Windows windows , wish	71	4009	November 19, 2025
Feature request: Appearance adjustments for U and V selected control point indicators Serengeti (Rhino WIP)	14	1072	November 19, 2025
Enable rhino v7 uv colors Rhino for Windows windows , rhino7	8	292	May 6, 2024

UV symbol colours

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