Fillet curve at parameter

[hitenter]

Hi,

I have curves that need different sized fillets at certain edges. The “Fillet a curve at a parameter” component is supposed to do that but the result seems buggy. The problem ist, that it outputs one curve for each fillet. So in case of a rectangle I get four with a fillet applied at only one corner instead of one rectangle with four fillets.

Should I use the component in a different way to get a proper result or is this a bug?

curve-fillet-at-parameter-01.gh (10.2 KB)

[magicteddy]

Hello,

This is not a bug, the component has its inputs as item and not as list. It’s not supposed to accept several parameters at once with several radii.

Have a look at this thread for some solutions.

Grasshopper rectangle with 4 random fillets

Hi, Find attached two methods. One requires a custom C# component, it allows to define several fillets along a curve, providing a list of radii and a list of parameters. In your case though, since you actually want all the corners to be filleted, you can shatter the rectangle by the midpoints of all the edges, then fillet each corner and join the result. This only uses native components. Of course you can replace the panel by some random output as in your example file. [image] FilletMultip…

[hitenter]

Oh that’s disappointing. One would naturally assume that grasshopper should be able to do that, right? I hope McNeel will make the component handle list inputs. If not in an update then at least for GH2?

Thanks for pointing me to that other thread, I’ll check out that C# component.

[magicteddy]

(same code as the C#)

[hitenter]

OH, you mean that’s the native GH2 component? NICE!

[magicteddy]

No I mean I coded the component myself. Maybe it’s in GH2, I don’t know.

[hitenter]

well you did a great job!

Though I don’t get why the native gh component can only work on single values. I mean it’s grasshopper, its hole point is to manipulate multiple geometries or datapoints at once, right? this current native component is pointless.

[maje90 (Riccardo Majewski)]

2 years ago: Fillet curve at parameter is un-grasshopper-y - #4 by Harri_Lewis

magicteddy code seems better though, more elaborated… haven’t tested.
… mine was a cheap hack over nodeincode without checks and warning messages.

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@magicteddy with the icon, is that a plugin with your code? or you pushed the bitmap to the c# script?
I sometime do the second, but it’s tricky and cumbersome…

[magicteddy]

Yes, it’s one of the first components I made, and the code is awful But it works !
I didn’t know it was possible to add an icon to a C# component.

[Joseph_Oster]

@hitenter

The “Fillet a curve at a parameter” component is supposed to do that but the result seems buggy. The problem ist, that it outputs one curve for each fillet. So in case of a rectangle I get four with a fillet applied at only one corner instead of one rectangle with four fillets.

It’s tricky, in part because anywhere a fillet is added changes all the other ‘t’ values. So I’ve always used an Anemone loop with nearest point references.

I want to fillet a rectangle with grasshopper

I’m confident that the Anemone loop algorithm I posted yesterday is correct. However, as evident esp. in version ‘b’, the loop isn’t “triggered” when the list of radii changes. Here are two ways to fix that: Connect the list of radii to the ‘T’ (Trigger) input of “Classic” Loop Start so when the list changes, the loop is triggered. Also, a ‘Reset’ Button can be wired to trigger the loop manually. [fillet_2023Jan29a] fillet_2023Jan29a.gh (17.0 KB) Replace “Classic” Loop Start/End compon…