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

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  • F Offline
    fredo6
    last edited by 27 Nov 2013, 20:44

    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 4 Jan 2014, 15:59

      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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      • J Offline
        jgb
        last edited by 4 Jan 2014, 22:13

        @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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        • D Offline
          Dave R
          last edited by 4 Jan 2014, 22:31

          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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          • J Offline
            jgb
            last edited by 4 Jan 2014, 22:53

            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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            • B Offline
              baz
              last edited by 5 Jan 2014, 01:31

              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 10 Jan 2014, 19:21

                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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                • M Offline
                  mitcorb
                  last edited by 11 Jan 2014, 17:02

                  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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                  • J Offline
                    jgb
                    last edited by 11 Jan 2014, 18:34

                    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 11 Jan 2014, 18:47

                      @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 11 Jan 2014, 18:51

                        @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 11 Jan 2014, 22:03

                          @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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                          • J Offline
                            jgb
                            last edited by 12 Jan 2014, 18:52

                            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 23 Jan 2014, 21:38

                              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 24 Jan 2014, 07:01

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

                                my SketchUp gallery

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                                • O Offline
                                  oli_sketch
                                  last edited by 24 Jan 2014, 07:21

                                  Thank you very much Cotty.

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

                                  kind regards

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                                  • cottyC Offline
                                    cotty
                                    last edited by 26 Jan 2014, 18:00

                                    @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 8 Mar 2014, 16:57

                                      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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                                      • TIGT Offline
                                        TIG Moderator
                                        last edited by 8 Mar 2014, 20:15

                                        It is VERY faceted - several tens of thousands for potential facets !

                                        The biggest 'arc' has 240 segments on its own...

                                        Can you simplify the segmentation ?

                                        TIG

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                                        • M Offline
                                          mac1
                                          last edited by 9 Mar 2014, 07:31

                                          Had some stray lines!
                                          Also file is too large to load here see Dropbox link https://www.dropbox.com/s/xmtune9hovo9cqk/TestSkin11.skp used Fredo's Curviloft to skin and done using SU v8

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