topic Re: OBJ export problem in AC 21 in Collaboration with other software

OBJ export problem in AC 21

Anonymous — Fri, 13 Oct 2017 06:41:58 GMT

Hello,
it looks like the wavefront (.obj) export is buggy in AC 21.
The objects don't keep their material definition.
I think the problem lies in that the material name in the .obj file can be different that the corresponding ones in the .mtl file.
Hope you can fix that soon GS.
Regards

Re: OBJ export problem in AC 21

Daniel Kovacs — Fri, 10 Nov 2017 09:21:39 GMT

Hello everyone,

We have investigated this report, and apparently the export is buggy in ARCHICAD 21 indeed. The mtl file contains wrong texture names, so the textures will be missing when opened.

The easiest workaround until we fix it is to save the project back to ARCHICAD 20 and export the OBJ from there.

Regards,

Re: OBJ export problem in AC 21

Mats_Knutsson — Mon, 22 Jan 2018 19:51:02 GMT

dkovacs wrote:
Hello everyone,

We have investigated this report, and apparently the export is buggy in ARCHICAD 21 indeed. The mtl file contains wrong texture names, so the textures will be missing when opened.

The easiest workaround until we fix it is to save the project back to ARCHICAD 20 and export the OBJ from there.

Regards,

Hi Kovacs,
Any news on this one? Spent a couple of hours yesterday trying to understand why my sketchfab export didn't work out and here I found the answer. Back-saving to 20 meanwhile

Re: OBJ export problem in AC 21

Daniel Kovacs — Wed, 24 Jan 2018 13:52:03 GMT

Hi,

It looks like we have found a possible cause for this bug, and we will try to include the fix in the next update (build 60xx).

Regards,

Re: OBJ export problem in AC 21

Mats_Knutsson — Wed, 24 Jan 2018 15:22:30 GMT

dkovacs wrote:
Hi,

It looks like we have found a possible cause for this bug, and we will try to include the fix in the next update (build 60xx).

Regards,

Gr8!

Re: OBJ export problem in AC 21

Anonymous — Fri, 09 Feb 2018 10:57:11 GMT

Gr8 indeed

Re: OBJ export problem in AC 21

Karl Ottenstein — Fri, 09 Feb 2018 16:31:51 GMT

I thought that Wavefront OBJ was more or less an archaic format?

Pending the bug fix ...

An easier workaround than saving back to AC 20 format and opening/exporting there, it seems to me, is to simply export a Collada DAE file from AC 21 and then use the excellent, fast and free Meshlab to open the DAE and then export it as OBJ from Meshlab. Meshlab can also export as PLY and other textured mesh formats as well.

http://www.meshlab.net

Re: OBJ export problem in AC 21

Karl Wir_n — Thu, 01 Mar 2018 08:17:50 GMT

We are relying on the obj-export in our office. Is there a more precise time plan for this bug fix?
/Karl W

Re: OBJ export problem in AC 21

Anonymous — Wed, 11 Apr 2018 20:34:54 GMT

Hi

Karl O Obj is still perfect format for me sorry to hear you think it is out of date.

Please can this be fixed asap as saving to older version is not an options as breaks certain library objects on older versions.

How is long before this is fixed. hopefully we don't have to wait until version 22.

Re: OBJ export problem in AC 21

Daniel Kovacs — Mon, 23 Apr 2018 13:58:58 GMT

Karl wrote:
We are relying on the obj-export in our office. Is there a more precise time plan for this bug fix?
/Karl W

Hey Karl,

This should be fixed in build 60xx which was released for English speaking versions as a preview already. The final version should come out in a matter of weeks, but until then, you can give it a try:
https://archicad-talk.graphisoft.com/viewtopic.php?f=10&t=59740

Regards,

Re: OBJ export problem in AC 21

Anonymous — Wed, 23 May 2018 07:58:22 GMT

Any news on that?
Anyone has tested the new international version?

Obj is (was) the best format to export to other 3d softs, the only one that kept correct geometry materials and uvwMapping. Maybe it is old but still the best so far.
Plus it was the fastest, which is important for big projects.

Re: OBJ export problem in AC 21

Anonymous — Wed, 23 May 2018 08:10:01 GMT

DAE export could be interesting if it was able to keep names of materials, but that is not the case so long.

Re: OBJ export problem in AC 21

Mats_Knutsson — Tue, 30 Oct 2018 20:22:52 GMT

Tried 22 and no luck...whazzup?

Re: OBJ export problem in AC 21

Mats_Knutsson — Tue, 30 Oct 2018 20:38:59 GMT

FBX /twinmotion export) kind of works great aside from the fact that the model opens rotated 180 degrees around the x-axis in sketchfab...that is upside down.

Re: OBJ export problem in AC 21

Daniel Kovacs — Wed, 31 Oct 2018 08:30:26 GMT

Mats_Knutsson wrote:
Tried 22 and no luck...whazzup?

Hi,

The issue with obj file export, that the materials got messed up should be fixed in AC21 60xx and AC22 30xx.

Did you find that it still messes the materials up for you the same way in the new version?
Or do you experience a new error?

Regards,

Re: OBJ export problem in AC 21

Mats_Knutsson — Wed, 31 Oct 2018 10:25:03 GMT

dkovacs wrote:

Mats_Knutsson wrote:
Tried 22 and no luck...whazzup?
Hi,

The issue with obj file export, that the materials got messed up should be fixed in AC21 60xx and AC22 30xx.

Did you find that it still messes the materials up for you the same way in the new version?
Or do you experience a new error?

Regards,

I tried AC22 SWE full 4018. No textures on the surfaces.

Re: OBJ export problem in AC 21

Daniel Kovacs — Tue, 06 Nov 2018 12:41:58 GMT

Hello Again,

I tried AC22 INT on W10. I opened the exported OBJ file with the default Microsoft 3D Viewer application, and it seems to be fine for me...

What application are you using for opening the obj file? (maybe that application can't display materials at all?)
What does the result look like for you?

Regards,

Re: OBJ export problem in AC 21

Mats_Knutsson — Wed, 07 Nov 2018 14:44:34 GMT

dkovacs wrote:
Hello Again,

I tried AC22 INT on W10. I opened the exported OBJ file with the default Microsoft 3D Viewer application, and it seems to be fine for me...

What application are you using for opening the obj file? (maybe that application can't display materials at all?)

What does the result look like for you?
Regards,

AC22 SWE full. Latest update. I use Sketchfab for viewing. When I export obj I get the concrete material but not the brick (both png) I zipped the obj+mtl+texture folder into one zipfile and in Sketchfab I can manually relink the textures but that's not interesting. When I export as fbx textures are fine but the model is rotated.

Re: OBJ export problem in AC 21

Barry Kelly — Thu, 08 Nov 2018 01:04:09 GMT

I haven't tested this but I am wondering if when saving as OBJ, is it using the wall surface override rather than the building material, or maybe it is the other way and it is using the building material rather than the surface override.
I am wondering it it is using one or the other regardless of how the wall is actually set to display in Archicad.

Barry.

Re: OBJ export problem in AC 21

Mats_Knutsson — Thu, 08 Nov 2018 07:41:08 GMT

Barry wrote:
I haven't tested this but I am wondering if when saving as OBJ, is it using the wall surface override rather than the building material, or maybe it is the other way and it is using the building material rather than the surface override.
I am wondering it it is using one or the other regardless of how the wall is actually set to display in Archicad.

Barry.

Sherlock Kelly, you're right. It's only the override surface that exports applied to the element.
.fbx does the job as expected (WYSIWYG) apart from the rotation (which I can fix in Sketchfab).

Thus both obj and fbx are flawed (at least with Sketchfab). Fbx is the better of the two...

/Mats