Flow along curve on surface

Hello,
using “flow along curve”, I placed a profile (box) on a surface.

On the left, the profile (blue) follows the projected curve.

On the right, the profile (red) follows the projected curve and is perpendicular to the surface.
The surface solution is easy to find in Rhino´s “flow along curve”.

In grasshopper, it is not that easy.

How would you guys do it in grasshopper? Because I have more than just one curve on an organic surface.

Thanks.

you might want to use flow along surface, which is Sporph component in grasshopper

Hello inno,
thanks for your reply.
But “flow along surface” will not help, because it is not possible to create good base surface with a curve on it.
This looks like a bigger problem. The grasshopper experts do not react.
Thanks in advance.

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Hi,


to make my question very clear.
How to place an object (blue) on a curve (red) and perpendicular to the surface (green) on which the curve is projected on?
In Rhino this works with “flow along curve”.
How would it work for many than one curve in Grasshopper?

Thanks in advance.

Flow_along_curve.3dm (1.3 MB)

Hello inno,
flow along surface is not working for this problem.
Any ideas?

I don’t know how you transferred the lines to the surface.
You could use the same method to transfer the brep.
Try this definition but I don’t know if it meets your needs.
hexagon.gh (874.8 KB)

I think a different approach might be to use the part of definition you didn’t post, the one that generates those curves in first place, and then maybe use those to build offsets and create the final pattern not from small units but as a whole

Hello Leopoldomonzani,
thank you very, very much for your answer, time and work.
But you did not use the curves on the surface.
However, this is the best solution yet.

Hello inno,
this task is not about to make something easier than it is.
The task is to take what you have and work with it.

It is easy to make this for one, two and three curves in Rhino.

Grasshopper is a tool designed to help you avoid using the same tool hundreds of times in Rhino.

This is what I ask the grasshopper community for.

Thanks.

I can’t find any option for the equivalent of Rhino’s Flow along curveTargetsurface in Rhinocommon

https://developer.rhino3d.com/api/rhinocommon/rhino.geometry.morphs.flowspacemorph/flowspacemorph?version=8.x#(curve,curve,bool,bool,bool)

it would for sure be useful to have

Sporph v0.gh (28.4 KB)