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

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    • jgbJ Offline
      jgb
      last edited by

      @cotty said:

      @jgb said:

      But it does have some limitations and quirks. 😲

      After your explanations I'm not sure if it is really the plugin 😕

      I can show you many examples of its limitations and quirks. I'm sure you could too, if you use it a lot.

      The problem I wrote of is not really an example, in that the perimeter geometry is a user problem, not a CL problem. But how CL handles some perimeter problems does exemplify its "limitations and quirks".

      In that case, why would CL not skin a selected perimeter in-situ with other geometry, yet skin that EXACT same perimeter selection when copied away from any other geometry? Doesn't happen all the time, but not often enough to sense an underlying pattern.


      jgb

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      • N Offline
        nilogog
        last edited by

        ...after a few hours trying to make it come up in Sketchup13, yes very happy!Fullscreen capture 24112013 111540 AM.bmp.jpg

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        • fredo6F Offline
          fredo6
          last edited by

          NEW RELEASE: Curviloft v1.3a - 27 Nov 13

          Curviloft 1.3a is a release for future Sketchup compatibility. It is advised to upgrade even if there are no functional changes.

          See main post of this thread for Download.

          Fredo

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          • T Offline
            TheDevil
            last edited by

            Hey Fredo Wow Great Plug in but I am trying to make a ship Hull...kinda like your profile picture shows. since most people use the loft to the most in building ships or planes or cars to name a few can you show a tutorial or maybe even explain how one would make a ship hull for say like a pirate ship...anyway good tutorials still tryng to figure out the plugin

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            • jgbJ Offline
              jgb
              last edited by

              @thedevil said:

              can you show a tutorial or maybe even explain how one would make a ship hull for say like a pirate ship...

              It really all boils down to what you have to define the curves needed to generate a loft.

              For a ship, you need to define the deck curve (waterlines), the keel curve (buttock lines) and at least 1 (preferably 2 or 3) curves defining the shape of the hull (station lines).

              Do a 1/2 hull only. When done, make the loft a component, then copy and flip it for the other side. That way edits to one side are reflected to the other side.

              Best practice is to make the 1/2 hull in 3 pieces. The bow section, the hull section, which is usually a straight extrusion for a "pirate ship" type hull, and then the stern section. Merge the 3 sections into one 1/2 hull.

              When you create the perimeter curves, pay extra attention to the endpoints where the 3 curves meet. They MUST be attached at the same endpoint. A "constrained" point will NOT loft.

              Try to maintain a very similar length of all the defining curve segments, or you will end up with a myriad of tiny triangles.

              If you need more help, post here again.


              jgb

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              • Dave RD Offline
                Dave R
                last edited by

                Here's a good illustration showing the lines used to define a boat's hull. The sheer line at the top (JGB's deck curve), waterlines (horizontal lines parallel with the water, not curved), stations (vertical sections that run laterally across the boat's centerline) and buttocks (the sections shown perpendicular to the waterlines and parallel to the longitudinal centerline). You can construct these from a table of offsets if you can find it for the vessel you're drawing. You might also get the diagonals which will give you a double check for the other lines.
                Peapod1.jpg

                Etaoin Shrdlu

                %

                (THERE'S NO PLACE LIKE)

                G28 X0.0 Y0.0 Z0.0

                M30

                %

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                • jgbJ Offline
                  jgb
                  last edited by

                  I wasn't sure how much nautical knowledge he had so I tried to keep it very simple.
                  And that IS a good illustration, BTW.


                  jgb

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                  • bazB Offline
                    baz
                    last edited by

                    And here's the same idea again but in SU ready to have the lines traced.
                    (Plans scanned and imported as images).

                    And below is the (un)finished result. Not sure I will ever finish it.


                    bod-scans.jpg


                    bod-su.jpg

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                    • Y Offline
                      yanosiento
                      last edited by

                      guys, how could i make a surface from those contours? just a narrow face beetween the lines

                      http://s14.postimg.org/oebxw5ab5/d_vida.png

                      thnks

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                      • mitcorbM Offline
                        mitcorb
                        last edited by

                        There could be a number of things preventing the completion of the face within the lines. If you post your .skp file, others can review and advise.
                        It could be a scale issue.
                        It could be a non coplanar issue.
                        It could be a non closed figure.
                        It could be something else.

                        I take the slow, deliberate approach in my aimless wandering.

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                        • jgbJ Offline
                          jgb
                          last edited by

                          CL will fail on any one of the following most common conditions... (as well as a few others)

                          1. 2 lines not joined at "endpoints" although they look like they do. Endpoints joined when "Constrained by" will not loft.
                          2. a tiny fragment at an endpoint is taken as part of the perimeter CL finds, or you define by selection.

                          When CL defines its perimeter, use the colours as a guide to where problems may lurk. Fredo has stated that the colours are not meaningful by design, but I have noticed that if the perimeter segment is a complete yellow it has no problems, but that is NOT a given. It can be almost any other colour, and it could still have a problem, usually at the very ends. However I have found that red indicates a problem that could be at either endpoint, or anywhere on the curve.

                          If a perimeter is made up from several colours, then there may be a problem at the endpoints where the colour changes.

                          The common fix is to zoom in on the endpoint CL has indicated to perhaps be a problem, and fix it.

                          Another way is to widely left-to-right select one line segment that includes the 2 endpoints and delete it. That will get rid of any gaps or fragments. Then redraw endpoint to endpoint. Make sure you do not join the lines on an endpoint that is "constrained by" or that is on a point outside the current context.

                          On a large complex loft you may want to put temporary lines in to breakup the large curve into several smaller ones, and CL each of them. The one that will not loft contains the problem. All this does is narrow down where to look. Delete all the temp lofts when done.

                          On a long complex curve as you posted, I would split it in a binary fashion. CL one 1/2. If it lofts, split the other half in 2 and repeat. If it fails, split that in 1/2 and repeat. Do this until you get down to a manageable few lines to look at in detail. This does not preclude multiple problems, but it does find clean sections as well as the problem ones.

                          And finally, when CL does not loft a seemingly clean perimeter that is attached to other geometry in the model, do this;
                          Select all of the perimeter lines manually and move/copy them to some free space along an axis line. You could also make the perimeter a group and edit the group.
                          Inspect and fix the perimeter for gaps and fragments.
                          CL should then loft.
                          Simply move the grouped loft along the axis back to its original position.


                          jgb

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                          • jeff hammondJ Offline
                            jeff hammond
                            last edited by

                            @jgb said:

                            CL will fail on any one of the following most common conditions... (as well as a few others)

                            1. 2 lines not joined at "endpoints" although they look like they do. Endpoints joined when "Constrained by" will not loft.
                            2. a tiny fragment at an endpoint is taken as part of the perimeter CL finds, or you define by selection.

                            you keep saying this stuff but it's not curviloft which is failing..
                            unless you also consider sketchup itself is failing at creating a surface to my square in this scenario:

                            Screen Shot 2014-01-11 at 1.40.03 PM.png

                            and your situation '2' is just poor user selection.. i'm not really sure what you're expecting the plugin to do in that scenario.. 😕

                            dotdotdot

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                            • jeff hammondJ Offline
                              jeff hammond
                              last edited by

                              @yanosiento said:

                              guys, how could i make a surface from those contours? just a narrow face beetween the lines

                              http://s14.postimg.org/oebxw5ab5/d_vida.png

                              thnks

                              from the image you posted, it looks like all you would have to do is select all of it then use curviloft's skin contours function. (the 3rd icon in the toolbar)

                              dotdotdot

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                              • TIGT Offline
                                TIG Moderator
                                last edited by

                                @Bruno

                                If none of the preceding comments apply or fix your issue... then please attach a SKP to a post and we'll look at it...

                                It will be 'do-able'...

                                TIG

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                                • jgbJ Offline
                                  jgb
                                  last edited by

                                  Jeff

                                  You are being picky. 😒 😒

                                  Of course the "fail to loft" is not a CL fault. It is the geometry faults that "prevent" CL from lofting.


                                  jgb

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                                  • O Offline
                                    oli_sketch
                                    last edited by

                                    Hello Fredo or someone who can help me.....

                                    I have installed Fredo pluggins like Round Corner, Join Push Pull and curviloft on MACOSX 10.9.1 macbook pro 15" 2014 retina

                                    When I use Fredo´s plugging Round Corner, Join Push Pull and curviloft the window with the different options and parameters are really, really small. Is impossible understand anything.

                                    Can you help me ?

                                    Kind regards

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                                    • cottyC Offline
                                      cotty
                                      last edited by

                                      It's a known problem with retina displays...

                                      my SketchUp gallery

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                                      • O Offline
                                        oli_sketch
                                        last edited by

                                        Thank you very much Cotty.

                                        I´ll be waiting for a solution....

                                        kind regards

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                                        • cottyC Offline
                                          cotty
                                          last edited by

                                          @oli_sketch said:

                                          Thank you very much Cotty.

                                          I´ll be waiting for a solution....

                                          kind regards

                                          You should share your details here, maybe it will help Fredo to find a solution ...

                                          my SketchUp gallery

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                                          • S Offline
                                            SamAxe
                                            last edited by

                                            Hello,
                                            This is my first post.

                                            I am having trouble skinning the curve that I have attached. Am I am doing something wrong?

                                            I will appreciate any help.

                                            I am running this on SU 2014 pro.

                                            Thanks in advance. Appreciate all the help I can get.

                                            -Sam


                                            SkinTesting

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