Windingcheck error?

Discussion in 'Technologies and Hardware' started by ChrisWilmer, May 3, 2010.

  1. ChrisWilmer
    ChrisWilmer New Member
    After fixing my non-manifold errors on my mesh, I ended up getting a windingcheck error that I have no idea how to fix. Has anybody seen this before?

  2. virtox
    virtox Active Member Moderator
    Never saw that before.. but just a wild guess, probably something to do with normals.
    (normals can be defined be the vertex/edge order on a polygon, counterclockwise or clockwise determines normal direction)

    You could try a "fix normals" or "unify normals" filter/modifier in meshlab.

  3. mlautenb
    mlautenb New Member
    I got this after scaling a working model in Blender and uploading it again...
  4. ChrisWilmer
    ChrisWilmer New Member
    If you guys are still interested, I did end up fixing this error...'s hard to describe, I don't think it had anything to do with normals, but the way the vertices were connected by edges was kind of "messy" (the faces were auto-generated). I re-autogenerated the faces with a different tool and they came out much cleaner.

    If anyone is getting this problem persistently, perhaps I can give more details.
  5. hplahpla
    hplahpla New Member
    I had the Windingcheck error too.

    Turns out Shapeways defines "inside" as where the normal is pointing.

    I had all the normals pointing outside.

    All I had to do was flip all normals and it was fine.

    I was using Blender.