Mirror objects from Autocad looks shady and traslucent

Mirror objects from Autocad looks shady and traslucent

Anonymous
Not applicable
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Message 1 of 11

Mirror objects from Autocad looks shady and traslucent

Anonymous
Not applicable

When I upload to fusion a DWG file that contains objects that had been mirrored in AutoCad, for some reason those objects look dark and you can see thru the material. 

 

Design8TKSX_0-1627406913113.png

So I always have to do some extra work deleting them and then remirror the objects in order to have them how they supposed to be.

 

Can anybody help me with this

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Message 2 of 11

jeff_strater
Community Manager
Community Manager

you should not have to re-model or re-mirror anything.  The geometry looks fine.  You might need to adjust the appearances for this model, and possibly some graphics settings.  And, they are not transparent.  The blue lines are sketches and always show through a solid in Fusion.  Just turn off the visibility of those sketches.

 

Share your model here for more direct help.


Jeff Strater
Engineering Director
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Message 3 of 11

Anonymous
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Design8TKSX_0-1627408308722.png

 

 

The one that I called B should look like the A. If you look closer you can see the inner lines on B, that is wrong. If I remirror on Fusion it does it right, but that is extra work for me. I don't know what to do to import it propertly

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Message 4 of 11

Anonymous
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Here is another example with two screws. They should look the same but they don't. One was mirrored on AutoCad before uploading the Dwg

Design8TKSX_0-1627408740282.png

 

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Message 5 of 11

jeff_strater
Community Manager
Community Manager

this still looks like an appearance issue, not a geometry issue.  If you can share the design, we can provide more info.  You are welcome to try re-mirroring, and the new mirror will definitely inherit the appearance from the source, but I still feel like that is more work than you should have to go through.


Jeff Strater
Engineering Director
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Message 6 of 11

Anonymous
Not applicable

I created a quick file for you to try to see if you can help me. The mirror object looks like the negative of the original

Design8TKSX_0-1627411652460.png

This is the Shared Link

 

https://a360.co/3kYWV4s

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Message 7 of 11

jeff_strater
Community Manager
Community Manager

Thanks for the example.  On an initial look, I think I understand what the problem is.  The mirrored body is "inside out" (face normals are pointing the wrong way), and my theory about appearance might not be correct.  Let me investigate further.


Jeff Strater
Engineering Director
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Message 8 of 11

jeff_strater
Community Manager
Community Manager

Humble apologies, @Anonymous - I was wrong about appearances.  It does appear to be the issue described above, where the mirror transform as applied in AutoCAD, when imported into Fusion, does result in an "inside-out" solid, which accounts for the strange appearance.  I have so far been unable to fix this by any tricks, so you may be correct - the only way to fix it is to delete and re-mirror.  This is clearly a bug in Fusion, and we will work to fix it.

 


Jeff Strater
Engineering Director
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Message 9 of 11

jeff_strater
Community Manager
Community Manager

one more request:  Can you share the DWG file for that simple "two blocks" test?  I'd like to share that with the translator team, because I think that is where the problem is introduced.  You may have to zip it so that the forum will not reject it.  Thanks.


Jeff Strater
Engineering Director
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Message 10 of 11

Anonymous
Not applicable

That is correct, they look inside out. I attached the file as requested. Thanks for the help

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Message 11 of 11

jeff_strater
Community Manager
Community Manager

I created bug FUS-87836 for this issue.  Thanks for reporting it, and your patience with my incorrect diagnosis

 


Jeff Strater
Engineering Director