Somewhat a follow-up of this thread . When a circle is trimmed the remaining arc is sometimes split ; this happens when the remaining arc contains the former circle’s seam point. Now I can understand the nerdy explanation of why this is the case, but it simply is nothing but a pain in the butt for…

I seem to remember this being discussed a long time ago… and some action was taken. It does actually work for trimming single circles, the seam point goes away. But CurveBoolean looks like it’s not optimized to do this. SimplyCrv should fix it - mostly - but the exception will be if Rhino decide…

[image] Helvetosaur: SimplyCrv should fix it I want McNeel to fix it because it is a bug. @wim ?

No it’s not a “bug.” You’re requesting that Rhino automatically modify geometry. Not automatically changing the user’s geometry is not a “bug.” 99.9% of the time no one’s going to care, but you can bet someone won’t like this for some reason.

[image] JimCarruthers: No it’s not a “bug.” Dear Jim, circles only have an endpoint in the NURBS fairytale land. I would argue that 99.9% of the time in practical geometric constructions, circles are abstract objects which, when trimmed should produce one arc, not two. If you can give me an…

[image] JimCarruthers: One word: scripting. Well… I don’t quite see how this is a practical example. As Mitch mentionned, the issue is already solved in most contexts : no broken arcs are produced anymore, except with “CurveBoolean”. Therefore, even if it’s only for consistence, this should…

[image] JimCarruthers: One word: scripting Two words: commercial software.

I would have a tendency to agree with Olivier on this point, best would be CurveBoolean gets a SimplifyResult=Yes/No option (default: yes). I would go even further to say that the SimplifyCrv function also needs to be improved for closed curves, the segments on either side of the start/end points n…

https://mcneel.myjetbrains.com/youtrack/issue/RH-60147

WISH : Avoid unsollicited arc splits

Serengeti (Rhino WIP)

brian (Brian Gillespie) October 1, 2020, 1:22am 11

RH-60147 is fixed in the latest BETA

Topic		Replies	Views
BUG? Trimming produces weird results Rhino for Windows windows , rhino7	8	377	June 6, 2024
Circle candidates that don't simplify Rhino for Windows	34	3845	October 20, 2016
Rectangle with rounded corners Rhino for Windows	2	5161	January 10, 2019
BUG?: SimplyCrv not simplifying Rhino for Mac	2	380	January 11, 2020
Curve won't simplify to arc Rhino for Windows	2	708	April 1, 2015

WISH : Avoid unsollicited arc splits

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