C# Rectangle3d (rounded)

Well friends

Is the rounded option exposed in SDK?

Reason for asking is that appears to me that this method:

Surface[] fillets = Surface.CreateRollingBallFillet(s1, s2, fillet, tol);

it doesn't work at all - so Plan B is to create Surfaces (via loft) using rounded rectangle profiles.

best, Peter

Replies to This Discussion

Permalink Reply by peter fotiadis on March 5, 2015 at 2:31am

PS: Initially I thought that the RollingBall could get these 4 and do the result shown. It can't and thus the rounded rectangle "option" (as Loft profiles) comes in mind.

Permalink Reply by peter fotiadis on March 5, 2015 at 5:11am

Forget it: it was so obvious ...

Permalink Reply by djordje on March 5, 2015 at 5:20am

Hi Peter,

There's no direct RhinoCommon method which will enable you filleting rectangle corners.
As for the Surface.CreateRollingBallFillet, it's somewhat buggy, and the only way I succeeded in making it work is by combining the flipping pattern of the surfaces that need to be filleted. Using either:

filletSrf = Rhino.Geometry.Surface.CreateRollingBallFillet(srf1, True, srf2, False, r, tol)

Or:

filletSrf = Rhino.Geometry.Surface.CreateRollingBallFillet(srf1, False, srf2, True, r, tol)

Check the attached files.

Attachments:

filletSrf.gh, 9 KB
filletSrf.3dm, 53 KB

Permalink Reply by peter fotiadis on March 5, 2015 at 6:15am

Well..my friend (see function attached previously as regards the rounding thing: resolved shortly after posting this thread) :

1. Thanks

2. For the rounding thingy you just sample 12 pts into a NubrsCurve (rectangle.PointAt(t) - where t is the normalized parameter per rectangle "side" [0 to 4]).

2. Indeed that RollingWhatever method broke my nerves and ... well it's 100 times simpler to Loft rounded rectangles (so to speak).

take care, best, Peter

Permalink Reply by peter fotiadis on March 5, 2015 at 8:20am

Well ... as I said I've tried exactly this (without the bool options) > nerves Kaput.

Plan B > your options > zero/nada/void/null > nerves Kaput.

best,Peter

Attachments:

filletSrf_V1.3dm, 84 KB
filletSrf_V1.gh, 21 KB

Permalink Reply by djordje on March 5, 2015 at 1:11pm

Yes, it does not work when the intersection surfaces do not form square/rectangle at the line of intersection.
Hopefully Rhino 6 will finally deal with this surface fillet issue.

Permalink Reply by peter fotiadis on March 6, 2015 at 1:50am

In fact the fillet surf in Rhino does also wrong things (you need to extend/retrim blah blah). But at least it DOES something.