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    [Plugin][$] Curviloft 2.0a - 31 Mar 24 (Loft & Skinning)

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    • Dave RD Offline
      Dave R
      last edited by

      Works fine here using Loft by Spline


      Back%20Contour.skp

      Etaoin Shrdlu

      %

      (THERE'S NO PLACE LIKE)

      G28 X0.0 Y0.0 Z0.0

      M30

      %

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      • B Offline
        benha
        last edited by

        Sorry. Must not have been clear. Wrong way. I'm trying to loft the two surfaces bounded by the loops, not the space between them.

        @dave r said:

        Works fine here using Loft by Spline

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        • Dave RD Offline
          Dave R
          last edited by

          I see. The two sets of curves are a red herring. πŸ˜„

          I wonder if you might be better off with a different tool for what you want to do.

          Etaoin Shrdlu

          %

          (THERE'S NO PLACE LIKE)

          G28 X0.0 Y0.0 Z0.0

          M30

          %

          1 Reply Last reply Reply Quote 0
          • B Offline
            benha
            last edited by

            What's weird is that I originally skinned something exactly like this. And now I'm trying to reconstruct it. And it's not working... πŸ˜•

            @dave r said:

            I see. The two sets of curves are a red herring. πŸ˜„

            I wonder if you might be better off with a different tool for what you want to do.

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            • fredo6F Offline
              fredo6
              last edited by

              @benha said:

              Hrm...

              Still not working:
              Found and removed a stray edge
              Scaled up by 10x
              Welded curves together
              Same failure state

              Revised file attached. Still baffled.

              The contour is made of a single curve with no sharp angle. Curviloft Skinning does not know where to cut the contour in 4 pieces. In such cases, you simply need to draw dummay segments, for instances at the corners.
              Skin contour - dummay segments.png

              Then, you select each of the 4 portions (click on it, then click in empty space).

              And you apply skinning.
              Skin contour.png

              Fredo

              PS: I also suggest you simplify a bit the contour to have a more regular spacing of the vertices, and thus obtain a more balanced mesh

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              • B Offline
                benha
                last edited by

                Argh. Still not working.

                I added dummy segments, and now when I enter the skinning tool it does take four clicks to select everything. The sections break at the dummy segments. So that's progress.

                But when I "click to validate" the contour just turns purple and nothing happens.

                Might this be related to the fact that I'm on a Mac?

                -Ben

                @unknownuser said:

                The contour is made of a single curve with no sharp angle. Curviloft Skinning does not know where to cut the contour in 4 pieces. In such cases, you simply need to draw dummay segments, for instances at the corners.
                [attachment=1:1fqlcg7n]<!-- ia1 -->Skin contour - dummay segments.png<!-- ia1 -->[/attachment:1fqlcg7n]

                Then, you select each of the 4 portions (click on it, then click in empty space).

                And you apply skinning.
                [attachment=0:1fqlcg7n]<!-- ia0 -->Skin contour.png<!-- ia0 -->[/attachment:1fqlcg7n]

                Fredo

                PS: I also suggest you simplify a bit the contour to have a more regular spacing of the vertices, and thus obtain a more balanced mesh

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                • fredo6F Offline
                  fredo6
                  last edited by

                  Your dummy segments may not be well placed (note that the contour curve is placed exactly on top of the group which forms the border surface)
                  In any case, you can first select the contours and dummy segments, and then call Curviloft Skinning.
                  Also, if you explode that group, you'll be more confortable
                  It works for me

                  Fredo

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                  • B Offline
                    benha
                    last edited by

                    Thanks for the help. Still can't make it work, but I think it's time to give up and call it a day.

                    I'm guessing it's something unique to my machine/configuration or whatever. I've tried about 20 different approaches / placements of dummy segments / etc and it never works. Very odd.

                    Anyway, thanks again.

                    @unknownuser said:

                    Your dummy segments may not be well placed (note that the contour curve is placed exactly on top of the group which forms the border surface)
                    In any case, you can first select the contours and dummy segments, and then call Curviloft Skinning.
                    Also, if you explode that group, you'll be more confortable
                    It works for me

                    Fredo

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                    • fredo6F Offline
                      fredo6
                      last edited by

                      @benha said:

                      Thanks for the help. Still can't make it work, but I think it's time to give up and call it a day.

                      Here is the model with the Skinning, if this can help you to progress
                      Back%20Contour.skp

                      Fredo

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                      • B Offline
                        benha
                        last edited by

                        Ah! You're a star. Thanks a TON!

                        Here is the model with the Skinning, if this can help you to progress
                        [attachment=0:1m74sant]<!-- ia0 -->Back%20Contour.skp<!-- ia0 -->[/attachment:1m74sant]

                        Fredo[/quote]

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                        • jgbJ Offline
                          jgb
                          last edited by

                          I just had the time to install the new version of Curviloft (with Quad faces) and
                          BOY AM I IMPRESSED 😍 😍 😍 😍

                          It was great before, but with Quads it is absolutely great. No more tiny surface fragments to clean up (so far as I see). And way FASTER to boot.

                          I'm just getting into a total revamp of my big airplane projects' fairings, and this new version will make that a piece of cake. Compared to the old way (manual meshing and tweaking) that took days to get a fairing right, the older Curviloft reduced that to a few minute to generate the fairing, and a few hours to cleanup the surface fragments that simply added more lines and faces than needed. I was happy then.

                          The new version should not need more than a few minutes tweaking if needed at all.

                          Thanks again Fredo. β˜€ β˜€ β˜€


                          jgb

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                          • jgbJ Offline
                            jgb
                            last edited by

                            Fredo - We have A problem 😲

                            The attached model is an extracted edge of a fairing. It should be a single face and all flat.

                            When I loft it, I get either a black face then just an empty group (thought that was fixed ❓ ) or nothing happens, but an empty group forms anyway. If I manually join verticies it will form a flat face.

                            There are no edge fragments, or gaps. The faces perpendicular are all properly formed, as well as the opposite edge to this one.

                            There are also no "errors" (colored lines) appearing, so I cannot find the problem.

                            I've had a few like this and it was easier to manually face them, but I figured you shold take a look at it.

                            Won't form a face.


                            jgb

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                            • B Offline
                              benha
                              last edited by

                              Interestingly, this file skins fine for me, but what you're describing is exactly like the problem I was having above.

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                              • irwanwrI Offline
                                irwanwr
                                last edited by

                                @jgb said:

                                It was great before, but with Quads it is absolutely great. No more tiny surface fragments to clean up (so far as I see). And way FASTER to boot

                                i wish i could use Quads too 😞
                                i agree that this plugin is really kind of wizard thing πŸ‘ πŸ˜†

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                                • M Offline
                                  mac1
                                  last edited by

                                  FYI for what it is worth:
                                  Using the skinning mode and selecting the closed loop, by left to right in context select or double click on one, then selecting the green check mark skins ok each time. If I try to select one edge, right click to bring up the context menu and select extend selection to all connected I have some problems but maybe an operator error? Note: At the steep part of the curve some triangulation is none by program to get face formation.

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                                  • jgbJ Offline
                                    jgb
                                    last edited by

                                    @irwanwr said:

                                    i wish i could use Quads too 😞

                                    I don't understand what you mean. Quads are just a better method to calculate and display faces on a surface. You don't actually "use" quads specifically. The pluggins (JPP, Curviloft, etc) use them when activated.


                                    jgb

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                                    • jgbJ Offline
                                      jgb
                                      last edited by

                                      Mac1

                                      Neither method you suggest works for me.

                                      I've noticed that Curviloft tends to fail when I want to form a totally or very nearly flat surface.

                                      It also seems to be overwhelmed by large complex surfaces. It goes all rainbow on me but if I just select smaller portions without any edits, the smaller surfaces form nicely. When I then explode all the subsections, it forms 1 complete surface. A bit more work, but less aggravating than trying to find the non-existent "problem".

                                      But all said, it is a plugin I simply CANNOT live without.


                                      jgb

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                                      • irwanwrI Offline
                                        irwanwr
                                        last edited by

                                        @jgb said:

                                        @irwanwr said:

                                        i wish i could use Quads too 😞

                                        I don't understand what you mean. Quads are just a better method to calculate and display faces on a surface. You don't actually "use" quads specifically. The pluggins (JPP, Curviloft, etc) use them when activated.

                                        i meant the TT Quad Face tool, it seems so good so sophisticated.

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                                        • fredo6F Offline
                                          fredo6
                                          last edited by

                                          @jgb said:

                                          Fredo - We have A problem 😲

                                          The attached model is an extracted edge of a fairing. It should be a single face and all flat.

                                          When I loft it, I get either a black face then just an empty group (thought that was fixed ❓ ) or nothing happens, but an empty group forms anyway. If I manually join verticies it will form a flat face.

                                          There are no edge fragments, or gaps. The faces perpendicular are all properly formed, as well as the opposite edge to this one.

                                          There are also no "errors" (colored lines) appearing, so I cannot find the problem.

                                          I've had a few like this and it was easier to manually face them, but I figured you shold take a look at it.

                                          [attachment=3:22uctz0e]<!-- ia3 -->C-Loft Problem.skp<!-- ia3 -->[/attachment:22uctz0e]

                                          Not sure I understand the problem.

                                          You have too identical boomerang-like profiles placed very close each other. If you select them and use the Loft by Spline tool, you get the fin skin between the two profiles.
                                          [attachment=2:22uctz0e]<!-- ia2 -->Cloft problem small.png<!-- ia2 -->[/attachment:22uctz0e][attachment=1:22uctz0e]<!-- ia1 -->Cloft problem big.png<!-- ia1 -->[/attachment:22uctz0e][attachment=0:22uctz0e]<!-- ia0 -->Cloft problem filled.png<!-- ia0 -->[/attachment:22uctz0e]
                                          What else do you want?

                                          Fredo

                                          PS: When you select, make sure that you do not select the same segments twice. Curviloft does not trap all situations yet. THis is why you have a numbering for the profiles.


                                          Cloft problem small.png


                                          Cloft problem big.png


                                          Cloft problem filled.png

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                                          • jgbJ Offline
                                            jgb
                                            last edited by

                                            I checked and I only have 1 set of lines, so I don't understand why you see 2 sets.
                                            And, when I do select any of the 3 modes, none form a skin.

                                            But when I select "skinning" it will give me a full black pre-skin. Hitting enter or green check leaves an empty group. If there was even a tiny gap or fragment, or double line in the selection, C-Loft would usually say so.

                                            If you (and others) don't get the same result, the only reason I can think of is some other script in my pluggin set that you don't have is causing, let's call it, interference.

                                            When I manually connected the opposing verticies, the skin formed, section by section, and most, but not all, the added lines could be removed without losing the skin.

                                            Like I said above, this usually happens when I try to skin a flat or nearly flat surface.

                                            I use "skinning" most of the time. When it doesn't work, I try the other 2 modes. When they don't work I go through the lines to find any anomalies (gaps, fragments or double lines), fix them and try again. If it is a complex or very large set of lines, I will then try to sub-divide it into several sections. Invariably the sub-sections form when the whole did not using the exact same set of lines.

                                            I've just finished all the main fairings on my big airplane project, but over the next few weeks, I'll have a whole bunch of complex skins to create, for the aircraft's interior skins. If I do encounter any problem that persists after I fix as much as I can find, I'll post it here, not so much looking for a solution, but for you (Fredo) to analyze. Maybe there is a very subtle bug that only surfaces (no pun intended) in specific circumstances. I've been there, and that's why most of my hair has gone. πŸ˜†

                                            And I am not implying that I may not be doing something wrong. 😐


                                            jgb

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