Help with Unroll SRF/ Flow along SRF Command

Hello, I am having an issue where I am trying to flow a wave curve along a srf using the flow along srf tool. I go through the process of unrolling my srf and positioning the crv on the srf ensuring it connects at both points. When I try to flow the crv, it begins in the correct target position, but it won’t curve around the object, like it is not mapping correctly.

I tried this process with a perfect rounded srf and it worked great, wondering if it is an issue with the surface shape or something else.

I’ve attached a screenshot with my rounded square srf and the round object I was able to perform the unroll/roll functions on.

Would appreciate any help on this one, thanks!


COPY.3dm (3.0 MB)

Are you trying to flow along srf or polysrf?

Just trying to flow along srf.

I meant is your unrolled surface is surface or polysurface?

I’m not 100% sure. I extruded the object from the crv, deleted the top and bottom planes and then unrolled the remaining shape if that helps clarify.

Try to unroll using UnrollSrfUV. AFAIK target surface should not be polysurface to be able to flow curve along surfaces the way you (I presume) expect.

Upload a .3dm file with you inputs and results. You can upload by clicking on the vertical arrow above where you type a post, or by dragging the file to where you type a post.

I’ve attached the file to the post David.

Izazix - I was able to successfully unroll the srf using that command, but I’ll have to test and see how to get the curve to flow on the separate pieces. It is on the attached file if you don’t mind taking a look.

You tried to flow along polysrf. In order to do that you have to split curve on each srf and flow them one by one.
COPYY.3dm (349.1 KB)

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Thank you for the example, that makes sense. Appreciate all the help on this one!