topic Re: Object change surface when trimmed in Libraries & objects

Object change surface when trimmed

kajnorberg — Mon, 10 Feb 2025 16:21:48 GMT

Hi!

We have a house object (GDL object) we use for sketching early stages. To make sloping roofs we use the ordinary Archicad roof to which we trim the object. However, when the object is trimmed with a roof not going to the edge of the object, the surface material changes to concrete slabs (see attached image). Why does this happen? And how do we avoid it?

Additional info that may or may not be needed:

Building material is set in the Archicad object with an array.
No other surface overrides are used.
Building material can vary in the same object.
The material shown in the cut (concrete slabs in the image) is based on the material selected in the Model Override Surfaces, despite this being turned off.
EDIT: The object is modeled with the PRISM_ command.
EDIT: The object does not react on SEO, which I guess is a separate issue.

Thank you!

Kaj

Re: Object change surface when trimmed

kajnorberg — Fri, 31 Mar 2023 10:48:24 GMT

@MinhNguyen

Hi, I'm not sure if you're the right person to tag, but are you aware if this is a known bug?

Thank you

Kaj

Re: Object change surface when trimmed

MinhNguyen — Mon, 03 Apr 2023 07:45:01 GMT

Hi Kaj,

Sorry for the confusion, but I no longer work for Graphisoft. Please reach out to the local support in your area for further investigation on this matter.

Looking at your problem, I feel like this was a limitation with the way how SEO works. Even if you disable surface override, it's possible that it will still be shown if the object is cut with SEO. If you enable surface override and change it to something else, can it be an acceptable workaround? Or maybe I haven't understood the question fully.

Re: Object change surface when trimmed

kajnorberg — Wed, 05 Apr 2023 08:08:08 GMT

Ah, sorry for the misunderstanding, my bad!

Yes, that is the workaround we use now, but it doesn't always work unfortunately.

Re: Object change surface when trimmed

MinhNguyen — Fri, 07 Apr 2023 05:03:10 GMT

Hmm, that's interesting. If that happens with your own GDL object, I suggest jumping into the Developer forum, as they will be able to help you with such topic

Re: Object change surface when trimmed

kajnorberg — Wed, 19 Apr 2023 06:08:28 GMT

No, unfortunately not. We have a local reseller looking into it, so hopefully it'll be resolved.