Modifying second UV channel of a static mesh programmatically

Development Programming & Scripting C++
1

Hello,

I’ve spent the whole day looking at the forums but couldn’t find anything (yes, I looked into procedural mesh topic). I’m trying to modify the second (or third doesn’t matter) UV channel with C++.

Basically turn this

Z7T6HiA.jpg into this 2ylrdnE.jpg

Just need to change the UVs, mesh stays the same. Can somebody point me in the right direction?

2

Unreal has an auto unwrap for Lightmaps, if your mesh has only one UV. Have looked in that code?

3

Sorry, maybe I wasn’t very clear. I’m trying to do this in runtime. I’m basically trying to assign new UV coordinates to vertices in runtime for an arbitrary UV map slot.

4

Hey SolidAngle,
I think C++ programming section has more people who could answer your question so I’ll move your thread there :slight_smile:

5

Thanks a lot. I think you are right :slight_smile: Fingers crossed.