Hello, I am looking for an option to create a 2 rail sweep in Grasshopper with an option to set curvature continuity to G2 for the rails. Is such a component available in a plugin or with custom code? The same goes for a Blendsrf component with inputs for G!/G2 like you can find in Rhino, is that …

G1 meaning tangency and G2 curvature? There is an api method that can be called. [image] ApiDocs.co I’ve put it in this for you. blendsrf.gh (51.2 KB) no idea about sweep2 tho

[image] Will_Wang: G1 meaning tangency and G2 curvature? There is an api method that can be called. ApiDocs.co I’ve put it in this for you. blendsrf.gh (51.2 KB) no idea about sweep2 tho That’s great! For the last 45 minutes I’ve been trying to rename the inputs, because I use full names …

Awsome, I am going to use this thing like crazy! :smile:

@Will_Wang if possible can you please have a look at this. I try to use blendsrf on this example but with didnt work as expected :frowning: [image] Any ideas how that can be solved usingyour script? Thanks in advance blendsrf_gsy.gh (10.4 KB)

it seems to me that the RhinoCommon call can’t handle singularities at the two ends where the edges meet. Not sure who would know better. Maybe @dale

Hi @g.synetos , If you bake your geometry to Rhino and then run the BlendSrf command, do you get the results you expect? – Dale

@Dale yes it works as expected. [image]

@Dale do you have any idea why that happens, and do you have any alternative solution how to achieve the desired result?

Hi @g.synetos , I am able repeat the problem, and I’ve opened an issue. https://mcneel.myjetbrains.com/youtrack/issue/RH-62323 The only alternative I can provide at this time is to use this version of Brep.CreateFromSweep . Include the points where the edge curves intersect. You’ll need to cook up…

Sweep2 rails: edge continuity and/ or Blendsrf component

Grasshopper Developer

Quan_Li (Quan Li) June 10, 2025, 11:19am 20

Maybe this can help.

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Sweep2 rails: edge continuity and/ or Blendsrf component

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