Hi All I used the BlendSrf to generate a surface, and I opened the record history. When I scale the input surface or turn on control points to change the input surface, the output surface is fine. [extendsrf] But when I extend the input surface edges, the output surface results in a problem [ex…

Thanks, I’ll check it. There is an update, but it stays put - that is, the surface stays attached at the original parameter on the edge. The difference is not between V6 and V7, it is in the state of the target edge - trimmed edges behave as in the first case above, unmtrimmed not - it looks like …

I see the same behavior. 7.19.22137.7001, 2022-05-17 History with Record=Yes Update=Yes BrokenHistoryWarning=Yes BlendSrf between two surfaces Modify one the surface by moving a control point, dragging the surface, etc. Do not use ExtendSrf The blend surface follows the modified input surface E…

@pascal If an untrimmed edge used as the target for BlendSrf is extended using ExtendSrf then the blend follows that edge. I understand the rationale that the parameterization of the edge does not change in that situation, but the difference in behavior may appear arbitrary to users who are not fam…

[image] David Cockey: I understand the rationale that the parameterization of the edge does not change in that situation, but the difference in behavior may appear arbitrary to users who are not familiar with the math behind NURBS. Yes. That is why I suggested we should use the normalized par…

Thanks for your help and feedback, cheers!

Rhino 7 ExtendSrf causes other problems

Rhino Rhino for Windows

brian (Brian Gillespie) March 21, 2023, 9:52pm 8

RH-53677 is fixed in the latest WIP

Topic		Replies	Views
Bug report: _ExtendSrf Rhino windows , bug	2	180	February 23, 2024
ExtendSrf display bug Serengeti (Rhino WIP)	14	802	May 15, 2016
Extend surface flips blend Rhino for Windows windows	16	848	November 23, 2024
ExtendSrf not working on trimmed edge Rhino windows	2	80	September 18, 2025
"_ExtendSrf" command weird behaviour in Rhino 8 WIP (Bug) Serengeti (Rhino WIP) windows , surface-extension	16	980	January 24, 2024

Rhino 7 ExtendSrf causes other problems

Related topics