Hi all. Rhino 7, Grasshopper component “Circle Fit” returns inaccurate/wrong results even with perfect input: [2023-12-14 14_02_29-Window] Circle Fit Bug.gh (7.5 KB) Instead, both Rhino command “_Circle _FitPoints” and rhinocommon method “Circle.TryFitCircleToPoints()” return correct results…

Hi @maje90 , Looks like V8 does a better job. – Dale

Cool. Strange. Sad. Not the kind of answer I expected. I own Rh8 but still am not able to use it because of the so many regressions, and I’ve sort of gave up explaining how frustrating the whole situation is :frowning_face: I understand new features pushed to last Rhino version, but this is a bug. …

I understand your frustration; I think it is a bug they have to correct has it could be done using some other Rhinocommon tool. CircleFit was introduced in SR2 in 2018 surely after Grasshopper component was done. See @dale answer here [image] Method for fitting a circe through a set…

[image] Riccardo Majewski: Cool. Strange. Sad. Yep, I get this. Fortunately, you’ve solved the problem in V7 - by using a C# component that calls Circle.TryFitCircleToPoints. Best, – Dale

Yes… something similar also here: [image] Is Grasshopper less accurate than Rhino? Grasshopper Definitively a bug. Rhino.Geometry.Sphere.FitSphereToPoints doesn’t work properly. [2023-10-24 11_17_49-Grasshopper - sphere fit bug] sphere fit bug.gh (31.0 KB) @DanielPike…

[image] Riccardo Majewski: hitting upon a bug like this (or similar others) would just think Rhino being a bad software. I’ve had that impression many times. Bugs (that shouldn’t be there with rigorous QA) go unfixed for years :exclamation: As if they just don’t care.

[image] Riccardo Majewski: SR2 … of Rhino 6, 5 years ago. This wish was for a method to fit a circle through a list of points, which we added to Rhino 6 SR2 6 years ago. This issue was about tuning up the method we added 6 years ago. This was fixed just 3 weeks ago. Hope the timeline helps. …

what regressions in rhino 8 are holding you back?

is there a reason you can’t cull some of the points that are packed close together?

[image] Max Allstadt: what regressions in rhino 8 are holding you back? … sorry I made enough mess in other threads. Most of the problems I mentioned are still there after months. Generally it feels I won’t be able to use 8 at all as most of the problems are already pushed to 9.

Circle Fit Bug

Grasshopper

maje90 (Riccardo Majewski) December 14, 2023, 6:08pm 6

Yes… something similar also here:

… btw, from what you linked:

SR2 … of Rhino 6, 5 years ago.

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Circle Fit Bug

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