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Problem with flipping normals!!

Discussion in 'Formats & External Tools' started by Viva-La-Baz, Jun 3, 2015.

  1. Viva-La-Baz

    Viva-La-Baz

    Joined:
    Jun 21, 2014
    Posts:
    50
    So the mesh I exported from 3ds max was giving me some weird problems with the left arm (see through) see through.PNG So i went back into max and flipped the normals. That worked as the mesh is no longer see through, the problem is with the colors as you can see.
    weird.PNG
    The shader is the same on both arms, with the same color. What is causing this? I can't seem to figure it out.
    Thanks.
     
    Viva-La-Baz, Jun 3, 2015
    #1

  2. OllyNicholson

    OllyNicholson

    Unity Technologies

    Joined:
    Jun 17, 2011
    Posts:
    142
    This problem happens when you mirror geometry in 3D studio - I believe you need to reset the transform on your mesh first > Utilities > Reset X Form

    Next, right click on your model > properties > check back-face cull to see your normal directions properly and then flip the faces of the incorrect normals. Collapse your mesh to editable poly and re-export and your model should be fine in Unity
     
    OllyNicholson, Jun 3, 2015
    #2

  3. theANMATOR2b

    theANMATOR2b

    Joined:
    Jul 12, 2014
    Posts:
    7,790
    The problem would of become 'very' evident once you started animating.

    When mirroring always reset x form. I believe an alternate process is the symmetry modifier - which performs the x form reset automatically.
    Best way to make sure before exporting (and before rigging/skinning), select individual objects then right click on scale icon on the main tool bar. All absolute values should read 100.0. If they don't - reset the x form.
     
    theANMATOR2b, Jun 3, 2015
    #3