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    Strange creased vertices

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    • O Offline
      optimaforever
      last edited by

      Hi Thom,
      I have some strange bugs happening these days with creased vertices.
      It seems the creased vertice won't respond to the crease command.
      SubD tries to crease some vertices but when I check the mesh, there aren't any crease on these vertices nor edges.
      Very weird. It happened several times on different models.


      creased vertice even with 0.00

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      • BoxB Offline
        Box
        last edited by

        It would help to see the model, but it looks like you have too many vertices on those edges.

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        • O Offline
          optimaforever
          last edited by

          @box said:

          It would help to see the model, but it looks like you have too many vertices on those edges.

          Actually, if I delete and redraw these edges, the subdivision looks correct.
          And the solid inspector doesn't show any error.

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          • O Offline
            optimaforever
            last edited by

            Unfortunately I haven't saved the mesh.

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            • thomthomT Offline
              thomthom
              last edited by

              If you can save the model next time you observe this I can have a look.

              It might be that you had a non-planar quad where the diagonal wasn't properly tagged to be compatible with QFT quads. Then the subdivision would subdivide each triangle and you will see that your loops becomes irregular after subdividing.

              Thomas Thomassen โ€” SketchUp Monkey & Coding addict
              List of my plugins and link to the CookieWare fund

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              • O Offline
                optimaforever
                last edited by

                Got the problem on a whale model I downloaded from the WH and quadifying it.


                test file


                here I noticed some weird vertices

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                • O Offline
                  optimaforever
                  last edited by

                  Ok, thanks a lot! Indeed it works!

                  Btw I don't care about the triangles I left. Anyway the topology isn't perfect to begin with, because the source mesh (although very correct for a 3DWH skp) isn't mine and the first purpose wasn't subdivision but getting some UV for Skattering or WRapr. ๐Ÿ˜‰

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                  • tuna1957T Offline
                    tuna1957
                    last edited by

                    You have some "non quad face" quads. The purple in my screen shot. Run the "convert sandbox quads to quad face quads" in QuadFace Tools and it will fix most of the problem. There still are a few triangles here and there in the model.
                    Second image is with SubD applied after the fix.


                    whale test.jpg


                    whale test_subD.jpg

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                    • BoxB Offline
                      Box
                      last edited by

                      So you asked your question of 'Thom' in the subd forum.

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                      • tuna1957T Offline
                        tuna1957
                        last edited by

                        Glad you got it sorted. The handful of triangles aren't that big a deal, just thought I'd mention them. It's actually a pretty nice model.

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