…because it will only ever produce one output curve for each input curve, while the equivalent Rhino command creates all the relevant results : 250829_IMG_Pull fails.gh (68.8 KB) [250829_IMG_Pull fails]

I have just pushed a fix which should become available in the next Rhino 8 SRC. In order to implement this fix, I needed to change the output type to return a List instead of an Item. This change causes the output data structure to be different than the previous version of the component… which means…

250829_IMG_Pulls_jvs01.gh (77.7 KB) import Rhino.Geometry as rg pulled = iCurve.PullToBrepFace(iBrep.Faces[0], 0.001)

You can use Project Curve instead. [图片] 250829_IMG_Pull fails-v1.gh (80.1 KB)

How did you define the orientation of the strips? Or in other words, how did you decide where to place the split curves? How are you going to unroll the fabric?

Hi @osuire , A bug for sure - thanks for reporting. Pull component should return curve list : RH-89114 https://discourse.mcneel.com/t/gh-pull-curve-to-surface-is-a-pita/209090/3 GH's `Pull" , for "Pull a curve onto a surface", component returns a single curve. "Curve.PullToBrepFace", w…

[image] user454: You can use Project Curve instead. Dear User454, Pull and Project don’t do the same thing. I NEED to use Pull.

[image] martinsiegrist: How are you going to unroll the fabric? How is this relevant to my question ?

Sorry for asking something completely off topic. I was just curious.

as meanwhile solution, the Rhinocommon method is working fine: [image] Py_PullToSrf.gh (79.9 KB) I guess when the bug is solved you could just replace the Python script with the reworked component (which also offers a parallel computing option)

RH-89114 is fixed in Rhino 8 Service Release 24 Release Candidate

GH Pull curve to surface is a PITA

Grasshopper

martinsiegrist (Martin Siegrist) September 10, 2025, 11:49am 14

SRC …. Service Release Candidate

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GH Pull curve to surface is a PITA

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