What could causing this?

[Cmte. Pena]

Hi guys!
My first time here in FSDeveloper
I have made my custom objects in Sketchup with total success, but whith this one... well... some problems
Please, look at the screenshots.

In Sketchup everything seems to be perfect (I just made a test before finish the object exporting it to MCX):

But, in MCX and when I export to MSFS2020, some lines appear:

What could causing this?

 

[GaryGB]

Hello:


Have you configured Sketchup to show "Hidden" objects ?

Those look like "thin Faces" which can form when 3D modeling goes wrong due to skewed / distorted geometry.

Although such "thin Faces" can be manually deleted, there is still a risk that the geometry has been warped off of the 3D world Axes and must be fixed.

If you attach a *.SKP project file or *.KMZ export file of your objects shown above, we can inspect it in Sketchup to see what has occurred.

GaryGB

 

[Cmte. Pena]

Hello:


Have you configured Sketchup to show "Hidden" objects ?

Those look like "thin Faces" which can form when 3D modeling goes wrong due to skewed / distorted geometry.

Although such "thin Faces" can be manually deleted, there is still a risk that the geometry has been warped off of the 3D world Axes and must be fixed.

If you attach a *.SKP project file or *.KMZ export file of your objects shown above, we can inspect it in Sketchup to see what has occurred.

GaryGB

Here the file, Gary.

 

[GaryGB]

Hi again:


I see no hidden "thin Faces" in Sketchup, so there may be an issue with how MCX imports / exports the Sketchup 3D model.


Are you importing it into MCX via a *.KMZ export file of your objects shown above ?

If not, try using a *.KMZ export file instead of a Collada *.DAE, so you can see what has occurred after import into MCX / Export to glTF.


If that does not work, we can try a *.OBJ export using a (free) Ruby plugin script coded by an expert programmer that makes extensions for Sketchup.

Let us know how these options work for you.

GaryGB

 

[Cmte. Pena]

Hi Gary,
After export like *.KMZ everything is going well, and I thank you so much for the attention and help!
I have just to check the texture of that wall where can we read AEROPORTO KK, cause it's blinking. I think this happens cause the wall it's so near the wall of the building.

Cmte. Pena

 

[GaryGB]

I have just to check the texture of that wall where can we read AEROPORTO KK, cause it's blinking. I think this happens cause the wall it's so near the wall of the building.

Cmte. Pena

Hello:

IIUC, you are seeing flickering of the sign as a separate 3D object where it penetrates the bounding box of the building 3D object ?

If so, that may be "Z-Buffer Fighting" seen when Z-Order sorting of 2 distinct 3D objects are superimposed.


Perhaps you can import the sign object into the project for the building object ?

AFAIK, that way the (2) objects are treated as (1) 3D object by MCX when it imports the scene and then exports them as a glTF model.

The single objects would then not likely show the 'Z-Buffer Fighting' between the building and the angled surface of the sign.

[EDITED]

PS: I am not certain it will work to create a "scene" with (2) separate objects adjacent to each other by only exploding their groups.

IIRC, if you import the sign fully into the same 3D model group as the building, you must also 'weld' it to the building, otherwise as a separate 3D object where it penetrates the bounding box of the building 3D object, it is still likely to show the 'Z-Buffer Fighting' between the building and the angled surface of the sign.

When the sign is 'welded' to the building, they merge to become (1) object, and are not vulnerable to display of 'Z-Buffer Fighting'.

[END_EDIT]

GaryGB

 

[Cmte. Pena]

Hello Gary! Happy new year for you and your family!

Ok, I tested importing the sign and it goes well. 👏👏👏
I'm usually let the objects in a group in Sketchup and everything is functional.
I thank you so much for your attention, dear captain.

Best regards from Brazil!

Cmte. Pena
Keep flying