why can't grasshopper fillet two curves with radia bigger than half of their length?

Example:

For some reason Grasshopper does not fillet two curves of a length of 1m with a radius bigger than 0.5. Any clue why this happens?

Replies to This Discussion

Permalink Reply by Rafail Bakolas on February 24, 2011 at 5:35am

bump

Permalink Reply by Danny Boyes on February 24, 2011 at 7:30am

Because the Fillet Component is not designed to Fillet only Two Curves. The purpose is to "Fillet the sharp corners of a curve". Therefore the first half of a curve is reserved for the previous segment and the second half for the next.

If you want a way of doing just two lines then here's one way to get you going. This setup only works on equal length curves and the direction needs to be right, both curves start at the corner you want to fillet.

Permalink Reply by David Rutten on February 24, 2011 at 8:10am

I just added an additional fillet component that creates a single fillet at a given curve parameter. I might be able to make it work on a list of fillet points and fillet radii, but that would involve a lot more testing and thinking and I'm a bit strapped now trying to release the next version.

So come the public release of 0.8.0005, this should be easier to accomplish.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Rafail Bakolas on February 24, 2011 at 9:03am

That's great! Thank you both!

Permalink Reply by constantinos schinas on July 24, 2018 at 11:43am

maybe you can rewrite the Fillet Node to simply ignore half curve rule for the first and last segments, in open curves only. It shouldn't be hard to do so and will solve the issue, at least when 2 lines are involved, or not?

to perfect it, i guess some other limits than half of curve could be introduced. half curve has no real meaning unless a distance fillet is used i think.

Permalink Reply by constantinos schinas on July 24, 2018 at 6:29pm

a workaround is to extend the curves using you radius/distance plus something, before using the fillet command, then extend by the same amount in negative (extending with negative actually trims the line).

Permalink Reply by Morteza Motahari on October 21, 2015 at 1:12am

Here is a definition that i use for filleting two co-planner unparallel lines without any limit.(only fillet radius 0 not accepted).lines don't need to be intersected.This is much more like filleting in Autocad and some other architectural products.

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