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Full Version: Missing faces

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From: pafurijaz
2 Nov 2021   [#5]
This happen also to me in many 3d model I always have errors when I use the Step files Saved by Moi3D, I export to IGES even if this mo generates many surfaces, at least in this way I don't lose the faces.
From: morph3us
2 Nov 2021   [#6]
I am using MoI version 4.0.

I exported an OBJ, as you requested and those missing parts work fine.
Now there are other areas with problems, though. (foir example see arrow 1 in the image)



I refrained from using your obj export algorithm, because in my opinion the weighting is off.
As you can see at arrow 2, big shapes are very lowpoly, while the small air vent holes on the backside are way too smooth already.


*quick edit: I exported the upper thing, which had those squashed faces, on its own. It works now! I dont know what the difference is between exporting all meshes at once to exporting one on its own, but yeah, there it is.
Still... My reasoning towards the OBJ export algorithm stands and there still seems to be a problem somewhere in this file... :(
Is there any data log where I could have a peek?


*edit2: another main reason for not using the OBJ exporter: Cinema4D makes everything almost same size quads. With your triangulation method I get a lot of expected shading issues.
(please look at the second attachment yourself, it seems this forum software doesnt let you implement images in an edit.)

Image Attachments:
MoI_ObjExport.jpg  MoI_ShadingIssues.jpg 


From: Michael Gibson
2 Nov 2021   [#7] In reply to [#5]
Hi pafurijaz,

re:
> This happen also to me in many 3d model I always have errors when I use the Step files Saved by Moi3D,
> I export to IGES even if this mo generates many surfaces, at least in this way I don't lose the faces.

Do you have an example file you can send to me so I can reproduce the problem over here?

- Michael
From: Frenchy Pilou (PILOU)
2 Nov 2021   [#8]
You have also this thread about Spline from Moi to C4D.
https://moi3d.com/forum/index.php?webtag=MOI&msg=10172.1

C4D accepts also "NGone" !
From: Michael Gibson
2 Nov 2021   [#9] In reply to [#6]
Hi morph3us,

re:
> I refrained from using your obj export algorithm, because in my opinion the weighting is off.
> As you can see at arrow 2, big shapes are very lowpoly, while the small air vent holes on the backside are way too smooth already.

You can use the "Divide larger than" option in the meshing options dialog to help with that. You can put in a distance value there and that will make any polygons larger than that size to be further refined. Use the arrow in the lower left corner of the meshing options dialog to expand it to get more options.

You can use that option to generate more uniformly diced up pieces like in this example:
http://moi3d.com/forum/index.php?webtag=MOI&msg=2833.5


> I dont know what the difference is between exporting all meshes at once to
> exporting one on its own, but yeah, there it is.

There is no difference that I am aware of, maybe there is some difference on the receiving end.


> Still... My reasoning towards the OBJ export algorithm stands and there still seems to
> be a problem somewhere in this file... :(
> Is there any data log where I could have a peek?

It sounds like you're not making use of the export options to generate the type of mesh result you want. But it's hard for me to tell for sure since I can't reproduce anything that you're doing over here.

Sorry no there isn't any data log specific to STEP export.

- Michael
From: pafurijaz
2 Nov 2021   [#10] In reply to [#7]
File e-mailed now Thanks

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