Falloff for Shading on Splines

[RemoGambacciani]

Hello everyone
Im trying to shade unmeshed, cloned splines.
I need to have some kind of selection/falloff to be able to drive a blend material and blending between shaders.
The usual suspects (vertex map/fields, distance node) doesnt seem to work on plain splines.
Any idea how to solve that?

spline02.c4d

[Dr. Sassi]

Hi RemoGambacciani,

A blend along a Spline is not given as a spline rendering, AFAIK.

I checked again to see if any Hair combination might do… but sorry, no luck.

As in the other thread, a Sweep and Vertex-Color Tag are needed.

Please add your request to render Spline Vertex maps here (Share Your Ideas):

https://www.maxon.net/en/support-center

All the best

[RemoGambacciani]

Thanks a lot @Dr-Sassi !
Thats what I thought...too bad...sweeping is not an option since we are talking about thousands of splines/hair in my scene
I will request that....I'm sure im not the first one to ask for that

[Dr. Sassi]

Thanks for the reply, RemoGambacchiani.

Yes, this was even asked a few times during the "Ask The Trainer" live show.

Anyway, please try to minimize the geometry and let Redshift tessellate the results, which might be faster…

https://projectfiles.maxon.net/Cineversity_Forum_Support/2025_PROJECTS_DRS/20250416_CV4_2025_drs_25_RSvc_03.c4d.zip

As an alternative, could a plane with a texture/alpha help here out?

Cheers

[RemoGambacciani]

Thanks a lot for the follow up @Dr-Sassi with the additional infos!

[Dr. Sassi]

Thanks for your patience, RemoGambacciani,

How about this option:
CV4_2025_drs_25_MGwc_01.c4d

All the best