Display fillet in 3D - bug!

[Thomas Holm]

I'm rounding a house corner by filleting two walls at their intersection (the operation creates a curved wall).

The wall's refence line is on the outside.
When the curve/fillet radius is equal or less than the wall thickness, the wall disappears in 3D. Not funny. I think Archicad should accept any curve radius as long as it's not LESS than the wall's thickness.

I guess this is a bug - or does someone have a solution?

[Thomas Holm]

3D window:

[Anonymous]

Hallo Thomas,

I'm having the same problem. That's a bug.
There are two other possible ways to draw the wall fillet you need:
1. just creating 3rd wall, using polygon wall tool.
2. Inverting wall reference line direction to inside and fillet by 0 radius.

[Thomas Holm]

Z.Bauer wrote:
Hallo Thomas,
1. just creating 3rd wall, using polygon wall tool.
2. Inverting wall reference line direction to inside and fillet by 0 radius.

Interesting. If your idea #1 works, it means this is really a bug, because the fillet command just creates a curved wall, which the polygon wall tool also does. They should display the same.

Your #2 idea is really weird. A fillet with radius 0 should be identical to a sharp corner, I thought? Does this really work (I'm at home now and can't test)?

[Anonymous]

Thomas wrote:
Your #2 idea is really weird. A fillet with radius 0 should be identical to a sharp corner, I thought? Does this really work (I'm at home now and can't test)?

Yes Thomas,
I have at first checked up to be assured, have then written.

[Thomas Holm]

Thanks. I'll try it tomorrow.

[Anonymous]

Thomas,
I think the reason that AC won't make a curved wall with
a radius that is equal or less than the wall thickness has
to do with something that a Graphisoft tech support person
told me when I was having a problem with a circular wall.
He told me that AC walls "must" have four sides, your wall
has zero inside surface length and therefor has only three sides
and does not generate in 3D.
I played around with the polywall wall tool and found that
only one joint with with a regular wall will clean-up.
The other joint with the wall forming the corner won't clean-up.
I then started playing around with cPRISM_ and found out
something that I did not know.
cPRISM_ with the correct status codes will clean-up with
wall vertical edges. It will not clean up with slab edges.

Thought you might be interested,
Peter Devlin

[Anonymous]

Thomas,
I need to amend what I said last night.
I thought I could get CPRISM_ to clean-up
with wall vertical edges but I was mistaken.
So far, the only commands I know
that do are BWALL and XWALL.
I have not tried CWALL.
Peter Devlin

[Thomas Holm]

Zohrab and Peter,

first I have to mention that I'm not into GDL. Never was and probably never will be, although I realise that some things you'd like to do can't be done in Archicad otherwise. But it's simply not my cup of tea.


Secondly I tried Zahrab's tip of moving the ref line to the inside of the corner and then filleting with 0. It does work, with the addition that my Archicad refuses to accept the 0 - it boings and changes it to a 1. Then it cleans up on screen and displays all right both 2D and 3D.

This would seem consistent with my finding that a fillet with 399 on the 400 thick wall 90° corner works, AND Peter's finding that a wall has to have four sides. However it isn't.

This is a logical bug, despite that you get the boing warning and radius change. Because if you're trying to put a 1mm filleted 90° corner wall segment between to straight walls that MEET in a corner point, this will not work unless the filleted segment is MOVED. And if it is, it shouldn't clean up!

So someone has tried to get a round a programming issue by taking a shortcut.

Still a bug, though. As was my original finding above - a wall that cleans up in 2D, as my 400 fillet did, should display in 3D too. Or else, in neither environment. I hope GS takes note of this.