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    SubD examples and models

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    • alvisA Offline
      alvis
      last edited by

      Can you explain to me, why the first attempt fails. Why I should select one edge of triangulated face, that the second attemt must be fine.
      https://youtu.be/XiUtriWV_lo

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      • thomthomT Offline
        thomthom
        last edited by

        @alvis said:

        Can you explain to me, why the first attempt fails. Why I should select one edge of triangulated face, that the second attemt must be fine.
        https://youtu.be/XiUtriWV_lo

        The Convert triangulated Mesh to Quads function doesn't always succeed. It's hard, impossible, to reliable determine exactly how the mesh should be converted as it would require AI understanding of the mesh's topology. In your example it's easy for use humans to see what should be a quad, but not for a script. The script doesn't even take into account soft/smooth/hidden properties - it just sees a set of triangles.

        In the case of your mesh there it looks like you have hard edges and then some soft+smooth edges between triangles pairs. Then you want to use the Convert SandboxTools Quads to QuadFace Tools quads instead. (left to the monkey icon). If those edges where hidden you you'd want to use the Blender Quads to QFT Quads function (the monkey icon).

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

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        • dereiD Offline
          derei
          last edited by

          @thomthom said:

          @alvis said:

          Can you explain to me, why the first attempt fails. Why I should select one edge of triangulated face, that the second attemt must be fine.
          https://youtu.be/XiUtriWV_lo

          The Convert triangulated Mesh to Quads function doesn't always succeed. It's hard, impossible, to reliable determine exactly how the mesh should be converted as it would require AI understanding of the mesh's topology. In your example it's easy for use humans to see what should be a quad, but not for a script. The script doesn't even take into account soft/smooth/hidden properties - it just sees a set of triangles.

          In the case of your mesh there it looks like you have hard edges and then some soft+smooth edges between triangles pairs. Then you want to use the Convert SandboxTools Quads to QuadFace Tools quads instead. (left to the monkey icon). If those edges where hidden you you'd want to use the Blender Quads to QFT Quads function (the monkey icon).

          Humm, i was in similar situations... means that either more documentation is needed to make it easier to understand when to use each function, or maybe if you would think appropriate, to make the quad-detection script to be more "intelligent", so it can take into consideration multiple parameters at the same time. For example not all Fredo Tools are good in creating or preserving quads... but they do smoothing. So, would be good to rely better on conversion.
          Thank you! Keep up the good work ! πŸŽ‰

          DESIGNER AND ARTIST [DEREI.UK](http://derei.uk/l)

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          • thomthomT Offline
            thomthom
            last edited by

            Yes, better documentation is indeed in need - as well as improving the tools. But docs are on the top of my list when I get home from my travels next week.

            I plan to set up a new site for QFT - move away from the BitBucket wiki.
            Better text and visuals describing the various features of QFT. GIFs to illustrate common topology pattern.

            And extend SUbD's site to include more examples of how various topology patterns subdivide.

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

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            • C Offline
              cuttingedge
              last edited by

              I was thrilled by the panton chair example shared by Ithil3d on youtube. I thought I'll build one trying slightly different method. A good few minutes and here's what i got.

              model

              test render

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              • HornOxxH Offline
                HornOxx
                last edited by

                @cuttingedge said:

                ... I thought I'll build one trying slightly different method. A good few minutes and here's what i got...

                This is a very good SubD example!
                how often and unsuccessfully I tried exactly this chair πŸ˜›

                never trust a skinny cook

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                • pilouP Offline
                  pilou
                  last edited by

                  Yes the difficulty with Subdivision modeling against the Nurbs modeling where you have yet all the curves of the model, is to imagine the "rustic" cubic form before it's transformation! πŸ˜„

                  https://s-media-cache-ak0.pinimg.com/236x/1a/d5/a5/1ad5a5b1e29b783619d44f7751f6c285.jpg

                  Frenchy Pilou
                  Is beautiful that please without concept!
                  My Little site :)

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                  • M Offline
                    miikka1978
                    last edited by

                    Is there any plugin working like Blender's Add Loop cut, see link below? I think that this would be really useful when using SubD.

                    https://www.blender.org/manual/modeling/meshes/editing/subdividing/loop_subdivide.html
                    https://www.youtube.com/watch?v=_f4XKe8lZEU

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                    • ely862meE Offline
                      ely862me
                      last edited by

                      If you look back a little you will see that we talk about that too, it's called Quad face tools, you can find it in the plugins library.

                      Elisei (sketchupper)


                      Before no life was done on Earth it was THE LIFE ITSELF...GOD
                      Come and See EliseiDesign

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                      • HornOxxH Offline
                        HornOxx
                        last edited by

                        ...completed the wing to a plane - certainly not a beauty πŸ˜•


                        _Render 1600.jpg


                        plane4_proxy.skp

                        never trust a skinny cook

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                        • JQLJ Offline
                          JQL
                          last edited by

                          @hornoxx said:

                          ...completed the wing to a plane - certainly not a beauty πŸ˜•

                          Not bad either... but it was a very promising wing

                          www.casca.pt
                          Visit us on facebook!

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                          • HornOxxH Offline
                            HornOxx
                            last edited by

                            @jql said:

                            ... but it was a very promising wing...

                            thanks
                            πŸ˜† ok - give this wing an other try

                            never trust a skinny cook

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                            • pilouP Offline
                              pilou
                              last edited by

                              @unknownuser said:

                              certainly not a beauty

                              Yet a charm certain! πŸ˜‰

                              Frenchy Pilou
                              Is beautiful that please without concept!
                              My Little site :)

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                              • StinkieS Offline
                                Stinkie
                                last edited by

                                @thomthom said:

                                There are talks going on with various render engines to allow for them to render high-poly variants from the low-polys.

                                Nice! πŸ‘

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                                • O Offline
                                  optimaforever
                                  last edited by

                                  In the same order of idea, can you thomthom develop a quadchamfer4SU?
                                  Ideally it would be a mix between the editability of SubD and the easiness of RoundCorner...
                                  Roundcorner is good but it doesn't allow for editing. I have to keep a non-chamfered version in a temp layer if I need to edit it again. And SubD need manually offsetted lines to control the distance of chamfering. On complex models, it can quicky become a time-consuming burden, just to create chamfered edges, not to mention the file size and the memory footprint.

                                  This TTQuadchamfer would be a quick 3D chamfer/fillet tool that automatically creates the needed lines offsets according to pre-entered parameters, which in return could allow easy re-editing, should the need arise. And afterward, one could tweak the fillet values edge by edge for more flexibility.

                                  What do you think?

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                                  • thomthomT Offline
                                    thomthom
                                    last edited by

                                    Got some visuals to illustrate expected result?

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

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                                    • O Offline
                                      optimaforever
                                      last edited by

                                      @thomthom said:

                                      Got some visuals to illustrate expected result?

                                      Have you seen http://www.mariussilaghi.com/products/quad-chamfer ?

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                                      • gillesG Offline
                                        gilles
                                        last edited by

                                        Streamliner, based on Norman E. Timbs 48 buick.


                                        SREAMLINER.png

                                        " c'est curieux chez les marins ce besoin de faire des phrases "

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                                        • JQLJ Offline
                                          JQL
                                          last edited by

                                          @optimaforever said:

                                          This TTQuadchamfer would be a quick 3D chamfer/fillet tool that automatically creates the needed lines offsets according to pre-entered parameters, which in return could allow easy re-editing, should the need arise. And afterward, one could tweak the fillet values edge by edge for more flexibility.

                                          What do you think?

                                          Actually I'm simply not using SubD, because it would be the most fun plugin I'd have, but it's not really useful for what I need right now. I would have yet another toy to have fun with and deviate my attention for what I do for a living... I must resist...

                                          If you'd do it, it would be extremelly useful if you'd integrate it with SubD methodology and chamfer it only when subdividing, keeping UV's, allowing for creases worflow to be integrated too and, probably integrate it in the rendering workflow too.

                                          I didn't know it yet but if SubD would be able to produce that, it would turn into the most useful toy an architect that deals with archviz needs apart from the renderers themselves.

                                          Thanks for that feature request Optimaforever, I really hope Thomthom pulls that one off!

                                          www.casca.pt
                                          Visit us on facebook!

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                                          • pilouP Offline
                                            pilou
                                            last edited by

                                            @: Gilles where is the model ? πŸ˜‰
                                            Inspiration Vrooum, vrooum! πŸ’š
                                            blobcar.jpg


                                            car_v6.zip

                                            Frenchy Pilou
                                            Is beautiful that please without concept!
                                            My Little site :)

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