[Gothra]

Hail fellow Rhino / Maxwell users,

I encountered a problem when trying to edge fillet a simple lofted surface.
It looked okay when I preview render it with the Rhino built-in render.
However when I exported it to the Maxwell plugin, the surface glitch showed up.





The filleted object is one single object (not splitted and then re-joined)
Is there any suggestion how to get rid of this problem?

Thanks and best regards,
Jacky

[Cadhorn]

i've no idea what's causing that.
the first thing i would try would be to copy the profile curve (the silhouette of your desired object from a side view) and revolve it, creating a new object (of the same shape). should give you a much "cleaner" object, without all the little tiny curves where you did the fillet edge. i suspect that will render cleaner for various reasons.

[firebird]

hi cadhorn,

have you checked the density of your meshing? It looks to me, that it is not dense enough. Maybe try to reset you surface properties via rebuilding your surface with constant u / v values.

It seems that your upper part of your geometry is less dense than the fillets, hence you get a certain distortion of you mesh.

I had kind of these problems aswell at edges of very symmetrical objects, i.e. tubes, cones etc.

[polynurb]

if the surfaces are joined together (polysurface) that should not happen, unless you are using "jagged seams" in the meshing options.
a few suggestions:
- Are your objects within the unit precision?
- try setting mesh density to .9 and check refine! (or clamp mesh edge length)
- as cadhorn mentioned, always try using single surface as much as possible.
- delet the fillet & try _blendsrf
- try _matchsrf and _mergesrf to optimize geometric continuity at edges.

[kami]

i'm having a similar problem ...


the object is one polysurface (profile swept along a curve).
and jagged seams is not turned on.
maybe i should use more mesh density, but still...

[polynurb]

to check out what is going on here I recommend to use _extractRenderMesh
and then _showEdges (only Naked); maybe there are some bad triangles in it?

[Gothra]

Apologies for my very late reply.

Thanks for the all suggested solutions~
I double checked all the geometry - the ellipses in this case,
redrawn them and make sure they are scaled from the base ellipse rather than drawn separately.

Loft the shapes then do the filleting, turns out fine now.
So I guess the original mesh is actually, not "cleaned" enough like Cadhorn suggested

However I did bump into another minor problem.
Is that when the fillet end up anywhere close to the mid-iso line of the mesh, it sometimes cause glitches as well.

Thanks and best regards,
Jacky

[polynurb]

That looks like a problem with aspect ratio...try to set the mesh for the object using a value around 6 for that parameter. I can see that there are many triangles connected to a single point at the right edge of the picture; that should not happend if you either set aspectratio to a low value or set the max mesh edges length to .. let's say 5mm ( don't know the scale of the object)