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J
JM Le Goff
Known Participant
December 16, 2024

Substance 3D Viewer don't overide Step Apperances...

  • December 16, 2024
  • 7 replies
  • 690 views

Sometimes 3D Cad files exported in "Step" file ormat may contain some appearance applied to parts.

 

it looks like when opened in Substance 3D Viewer you may view them and you can export it in GLB format and it's fine.

But when you apply another aspect from the "Default Library" a "metal one particularly" it add the color to the color parameter of the part. it don't overide it.

 

even if the look is good in Sb.

view of the Step in Sb

after applying "titanium"

the glb viewed in Sandbox.babylonjs

 

    7 replies

    J
    JM Le GoffAuthor
    Known Participant
    June 20, 2025

    Hi,

    All is fine now with the last update Version 0.25.0

     


    Many Thanks

    J
    JM Le GoffAuthor
    Known Participant
    March 26, 2025

    I guess that this issue is not fixed in the 0.23.1 release.


    Is it planed for the next one?

    C
    Community Manager
    CramseurCommunity Manager
    Community Manager
    January 14, 2025

    I received the STEP files for this and will look into this.

    JMathews
    Community Manager
    JMathewsCommunity Manager
    Community Manager
    January 10, 2025

    Hi @JM Le Goff !  Any chance you can send over the sample STEP file you imported with materials so we can take a look at this?  Probably a bug in our exporter.

    Adobe Principal Product Manager, 3D & Immersive
    J
    JM Le GoffAuthor
    Known Participant
    December 31, 2024

    could it be any option/preference to prevent the "Step to mesh" converter to generate Vertex color?

    As Viewer don't manage them, you can't see really what hapenned when you export it to another app in Glb or Obj...

    Many thanks

    J
    JM Le GoffAuthor
    Known Participant
    December 18, 2024

    here, you can see that the first vertex are probably Bluish...

     

     

    J
    JM Le GoffAuthor
    Known Participant
    December 18, 2024

    I've found something strange...

    when Sb opens a "step file" with apearances applied on Parts, it generates "vertex colors"...
    so even a Sbsar is applied, the vertex color remains, and when the file is exported in glb the viewer add shader color and vertex color...
    it can be seen when exporting the OBJ... You will see also that no MTL comes with the OBJ...

    regarding this, Sg can do the job... opening the Step, and export an OBJ with a MTL without asigning "vertex colors"...



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