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    Can we improve ExtrudeEdgebyRails? (add options)

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    • TIGT Offline
      TIG Moderator
      last edited by

      I now have v2 of EEbyRails working - in this version you pick 2/3/4 curves - the Profile, then Rail-1, then Rail-2 [which could also be Rail-1 again] and then a 'Melding-Profile' [could be the Profile again]...
      This 'Melding-Profile' lets you dictate the end form/location of the mesh as well as the start derived from the Profile - effectively allowing a 'Coons mesh' from 4 defined paths, with the mesh 'morphing' between them all...
      I am going away for a few day but then I plan to issue v2 early next week - however, I haven't addressed the segmentation matching of Rails/Profiles yet - any comments before I commit would be welcomed...EEbyRv2.png

      TIG

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      • EarthMoverE Offline
        EarthMover
        last edited by

        Great news TIG. Have you tried it on Jeff's "impossible" scenario yet?

        3D Artist at Clearstory 3D Imaging
        Guide Tool at Winning With Sketchup
        Content Creator at Skapeup

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        • pilouP Offline
          pilou
          last edited by

          What about number of segments of each part?
          Must be equal for more speedy result or not important as taken from existant between neighbour forms?

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

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          • CarrozzaC Offline
            Carrozza
            last edited by

            Great news TIG !!!

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            • thomthomT Offline
              thomthom
              last edited by

              I moved this into the developer section. Sorry for any confusion that might cause - but we're trying to keep the Plugin section an index only. 🤓

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

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              • JClementsJ Offline
                JClements
                last edited by

                Looks very promising and seems to me that it would be easier to use and be more predictable.

                Thanks, TIG for all your hardwork. What will 2010 bring? Hard to imagine.
                😕
                John

                John | Illustrator | Beaverton, Oregon

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                • juan974J Offline
                  juan974
                  last edited by

                  Edit first post

                  juan974 (Réunion island)
                  website : http://sketchucation.com/click.php?url=http://www.tarn.us

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                  • pilouP Offline
                    pilou
                    last edited by

                    The principal problem is avoid cracks between each existant sides!

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

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                    • TIGT Offline
                      TIG Moderator
                      last edited by

                      @unknownuser said:

                      The principal problem is avoid cracks between existing sides!

                      The good news is that EEbyRv2 - yet to be unleashed - ensures that the 2 rails and 2 profiles selected are kept so now there are no 'cracks'; however, the number of facets increases dramatically with unmatched segment counts - especially if the rails AND profiles have unmatched segment counts - especially if there's no common factors.
                      equal segment-counts for rails + profiles =
                      5&5 & 5&5 =>> 5x5 = 25 =>> 50 facets [remember that quads are triangulated so we need to x2]
                      10&10 & 10&10 =>> 10x10 = 100 =>> 200 facets [x2 the mesh edges =>> x4 the mesh facets]
                      Paired segments with a common factor increase by a bigger amount, but still not too unwieldy - here it's x4 for a mesh that has x2 the edge segments =
                      10&5 & 10&5 =>> 10x10 = 100 =>> 200 facets [same number of mesh facets from far fewer mesh edges]
                      BUT a similar segment-count but with no common factor give enormously faceted meshes =
                      10&9 & 10&9 =>> 90x90 = 8,100 =>> 16,200 facets !!!
                      However, this subdivision method WILL give a properly 'smooth' mesh.
                      However, there is an alternative algorithm that I am trying to incorporate, which takes the segment count of the most segmented rail/profile as the maximum and projects back 'triangulated wedges' of mesh to a repeated vertex position on the rail/profile with the fewer segments, these 'wedges' will be positioned as evenly as possible along that rail/profile.
                      I'll probably introduce an extra warning dialog if the facet-count gets above a certain limit - say ~1,000 - which will tell you that it could take some time to make a 'perfect mesh' because you have [stupidly] made the rails/edges with awkwardly uneven segment-counts: and then offering you the chance to 'Cancel' and fix it manually & retry, or answer 'No' to go for the quicker [but simpler and less perfect] mesh, or 'Yes' to carry on as you are and wait for the very faceted mesh to finish processing... zzzzzzzzzzzzzzzzzzzzz.
                      I hope to have something published early this coming week...
                      Merry Christmas! ☀

                      TIG

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                      • pilouP Offline
                        pilou
                        last edited by

                        It's not an easy thing to convert an box modeling prog to a nurbs one 😉
                        Happy new year and see you the next one ☀

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

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                        • JClementsJ Offline
                          JClements
                          last edited by

                          TIG,

                          I am wondering if, through your recent experimentation with different algorithms for your "railing" scripts, that a better means for creating a terrain from contours could be developed (v.s. the sandbox method which often requires so much time consuming and tedious cleanup)?

                          John

                          John | Illustrator | Beaverton, Oregon

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                          • pilouP Offline
                            pilou
                            last edited by

                            @unknownuser said:

                            over 30°C (86°F) for christmas do you believe that ?

                            No 💚 😉 😎 ☀

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

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                            • juan974J Offline
                              juan974
                              last edited by

                              @unknownuser said:

                              tig wrote : However, there is an alternative algorithm that I am trying to incorporate, which takes the segment count of the most segmented rail/profile as the maximum and projects back 'triangulated wedges' of mesh to a repeated vertex position on the rail/profile with the fewer segments, these 'wedges' will be positioned as evenly as possible along that rail/profile.

                              what do you think about :

                              lot of faces may be created, would you try the method of distribution of wedges whitch decrease the number of created face?
                              |_no "continue whit classic algorithm"
                              |_yes "open another dialog box"
                              _|_how would you like to distribute the wegdes
                              __|_from start "all from start to middle of rail"
                              __|_from end "all from middle to end"
                              _| homogeneous "..."
                              _|_ok
                              _|_cancel

                              do you think is a good way?

                              EDIT : is not a good way, i was thinking about low difference between segments's rails, but dont works for big difference ...

                              merry christmas to all, joyeux noel zot toute
                              over 30°C (86°F) for christmas do you believe that ?

                              juan974 (Réunion island)
                              website : http://sketchucation.com/click.php?url=http://www.tarn.us

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                              • D Offline
                                driven
                                last edited by

                                hi Tig,

                                just a thought, I and it seems quite a few people use fredo's polyline segmentor before using eebyrails, loft, blend, etc..

                                so, would it be possible to simply call up that tool from within EER2 if a potential problem is found?

                                john

                                learn from the mistakes of others, you may not live long enough to make them all yourself...

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