Mapping on a cylinder exported from rhino

[antoine_hansen]

Hi there!
This is my first post here, but i’ve looked around and didn’t find an answer to the issue i’m encountering…
I’m trying to put a rope mapping that i created on vray via a generic mapping on a cylinder that i exported from rhino.
But it looks like the surface is misunderstood by sketchup, so i tried to download fredo6 tools for meshmappings and it still doesn’t recognize the surface ; could the problem be related to the nurbs export? Should i try to draw my cylinder on sketchup or should i look for a way to convert the surface int triangles or quad meshes?
Any solution is welcome!

Cheers xx

[francisquitof]

Try with sketchUV plugin. Did you use thrupaint?

[antoine_hansen]

Yes, unfortunately it doesn’t work… so i might try create lines and work with clothwork, but it means that i have to recreate elements which is not ideal

[francisquitof]

Can you share the texture you created? I could make a video showing you how you can map the cylinder.

[Anssi]

As to exporting to SketchUp from Rhino, I have found it is wisest to first convert all model geometry to meshes inside Rhino, then to use the reducemesh command to make it a manageable size and to export to SketchUp after that. Exporting directly creates overly dense meshes that SketchUp has difficulty handling.

[antoine_hansen]

I managed to map it just as it should! But the bump and displacement maps don’t appear, the material stays flat . I changed the direction of the surface but nothing changes…

What could be the problem?

[antoine_hansen]

Thanks i’ll definitely give it a try!

[Anssi]

@antoine_hansen

But the bump and displacement maps don’t appear,

Where do you expect them to appear? SketchUp doesn’t have either feature. You must probably add them back in the renderer you use.

[antoine_hansen]

Here’s the link for the texture

https://we.tl/t-6PKRit2Wei

Cheers!

[antoine_hansen]

I apply all my mappings in vray

[antoine_hansen]

[DaveR]

Moved to the Vray category.

[Elmtec-Adam]

You should only really need 3 of those maps - this will help light react better to the flat surfaces of the cylinder.

• Albedo in the diffuse section

• roughness in the reflection section (change surface control to roughness)

• Normal in the bump section (change to normal map)

delete the displacement one - that shouldn’t be used anymore.

If you really have time and some memory to burn you could apply the height map as a 2d displacement in the geometries area of v-ray.
This is an expensive operation to perform, whilst it looks great up close it will slow you down - so maybe only use it if the whole image hinges on this rope.
Maybe you work for a rope manufactuer

[antoine_hansen]

Thank you very much! Very useful indeed I actually don’t but should work for a manufacturer, good idea
Cheeeers