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

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    • charly2008C Offline
      charly2008
      last edited by

      Robert,

      it is very easy. I used this basic construction shown in my post before. Connect the faces as you want and use spline method "junction by orthogonal Betier curves" as shown below.

      Charly


      Basic.jpg


      Unbenannt.JPG


      Unbenannt1.JPG


      Unbenannt2.JPG


      Unbenannt5.JPG


      Unbenannt6.JPG


      Unbenannt7.JPG


      Junction by orthogonal Bezier curves

      He who makes no mistakes, makes nothing

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      • R Offline
        robert111
        last edited by

        charly thanks for your tuto but i havent cuved form , i dont know why??
        look this picture


        gg.JPG

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        • R Offline
          robert111
          last edited by

          thanks charly , i dont have use spline in curviloft , thanks

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          • charly2008C Offline
            charly2008
            last edited by

            Robert, i think you used a different Spline Method. See images below. The second image shows Junction by Orthogonal Bezier curves.

            Charly


            Unbenannt.JPG


            Junction by Orthogonal Bezier curves

            He who makes no mistakes, makes nothing

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            • charly2008C Offline
              charly2008
              last edited by

              Probably there are many like me. Some features I can not understand completely.


              Unbenannt.JPG

              He who makes no mistakes, makes nothing

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              • fredo6F Offline
                fredo6
                last edited by

                @charly2008 said:

                Probably there are many like me. Some features I can not understand completely.

                Charly,

                There are many ways to do Loft, and this is why there are many options (and there should probably be more).

                1. The Spline methods on the left side:
                • one if simply to link contours by straight lines
                • the second is a junction by Bezier curves with mean slope. In many cases where contours are aligned this is almost a straight line too. But in other situations, it gives a curved shape.
                1. The two icons in the middle are for Cubic Bezier and Catmull Splines. In most cases they give a very similar shape, though Cubic Bezier is usually nicer in the rounding. Catmull, in contrast, is more similar to what you get in Subdivide & Smooth methods.

                2. The two icons on the right side of the Spline method palette: These 2 methods only apply when you have more than 2 contours. The principle is that they link the two extreme contours by B-Spline or F-Spline, using the intermediate ones as a guide for shaping. The generated surface passes through the extreme contours but not thorugh the intermediate ones

                3. The vertex matching palette is about how to match vertices from one contour to the next one. I am still experimenting and will try to improve in this area. The matching can be based on:

                • match vertex to vertex when there are the same numbers (first default)
                • match along the curvilinear distance (second default)
                • match along Cubic or Bezier profiles. The principle is that the spacing between matching vertices is function of the curvature of the contour. I found theoritical cases where this is the correct solution, but in the real world, this may be another story.
                1. The geometry palette is used for 2 purposes currently:
                • generate only the junctions as lines (i.e. no surface)
                • make the junction as SU curves. This allows deforming the shape in a continuous way by moving the contours.
                  I plan to add the possibility to construct any part of the mesh (i.e. triangles, quads, junctions only, etc....)

                The best is to play with the options on a given model and see what it gives.

                I agree that this is not straightforward, but keep in mind that there is unfortunately not a single solution to all lofting situations.

                Fredo

                PS: by the way, extremely nice models you designed!! 😒

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                • charly2008C Offline
                  charly2008
                  last edited by

                  Hi Fredo,

                  thank you for your detailed explanation. I'll continue to experiment with getting to know all the options. Your explanation is certainly helpful to all.

                  Charly

                  He who makes no mistakes, makes nothing

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                  • thomthomT Offline
                    thomthom
                    last edited by

                    I'm getting some errors:

                    CurviError.png

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

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                    • fredo6F Offline
                      fredo6
                      last edited by

                      @thomthom said:

                      I'm getting some errors:

                      [attachment=0:21a7yfyo]<!-- ia0 -->CurviError.png<!-- ia0 -->[/attachment:21a7yfyo]

                      Tom,

                      Thanks for signaling this problem.
                      Would you mind to post the model.

                      Fredo

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                      • thomthomT Offline
                        thomthom
                        last edited by

                        @unknownuser said:

                        @thomthom said:

                        I'm getting some errors:

                        [attachment=0:1k817cpu]<!-- ia0 -->CurviError.png<!-- ia0 -->[/attachment:1k817cpu]

                        Tom,

                        Thanks for signaling this problem.
                        Would you mind to post the model.

                        Fredo

                        It's a wee heavy - but I can post the extracted polylines.

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

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                        • thomthomT Offline
                          thomthom
                          last edited by

                          Here it is:


                          CurviError.skp

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

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                          • charly2008C Offline
                            charly2008
                            last edited by

                            Hi Thomas,

                            i welded each line and below the result in Sketchup 8.

                            Charly


                            Unbenannt.JPG

                            He who makes no mistakes, makes nothing

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                            • thomthomT Offline
                              thomthom
                              last edited by

                              ?

                              You have to weld the curves for loft to work?

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

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                              • charly2008C Offline
                                charly2008
                                last edited by

                                Yes this is my experience, otherwise you will have multiple lines.

                                He who makes no mistakes, makes nothing

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                                • thomthomT Offline
                                  thomthom
                                  last edited by

                                  Even more odd - that unwelded needs more distance...?

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

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                                  • charly2008C Offline
                                    charly2008
                                    last edited by

                                    I must correct myself. In your example it works without welding but only if the two lines have a little more distance. Otherwise I get the same error messages. I previously thought the lines would have to be welded. now I've found that it is not so. Sorry, I am ashamed. I was back to cheeky.

                                    Charly

                                    He who makes no mistakes, makes nothing

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                                    • R Offline
                                      robert111
                                      last edited by

                                      charly how to modeling this exemple plz can you make tuto plz, il love yours objet with this plugin


                                      SCF%20Crown3.jpg

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                                      • R Offline
                                        robert111
                                        last edited by

                                        and for this exemple too


                                        Ring1.jpg

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                                        • charly2008C Offline
                                          charly2008
                                          last edited by

                                          To all who are interested,

                                          My mistake is based on the plugin Extrude Edges by Loft. Here welded edges or corners are required. I realized only now with Curviloft only just a double-click on the edges is necessary to complete the selection. Without the post from Thomas, I would have thought about it.

                                          I could have saved myself a lot of time. You get used sometimes to a particular workflow or action and thought no more about it.

                                          Charly

                                          He who makes no mistakes, makes nothing

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                                          • jeff hammondJ Offline
                                            jeff hammond
                                            last edited by

                                            @charly2008 said:

                                            I realized only now with Curviloft only just a double-click on the edges is necessary to complete the selection.

                                            or, adjust the max edge angle then single click (though in thom's example, the filter needs to be around 130 deg.)

                                            screen 4.jpg

                                            [this feature comes in very handy in certain instances]
                                            [use the tab key for even more filter options]

                                            dotdotdot

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