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    Unfold.rb script: useful for UV-mapping?

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    • H Offline
      HFM
      last edited by

      I Must say this idea is briliant, but instead of folding it back together why not try to make it like components? Unfold one, aplie texture and see the effect directly on another...

      Would be awesome and very usefull!

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      • K Offline
        kwistenbiebel
        last edited by

        Oh yes HFM,
        Wonderful idea.
        That way it would work like Whaat's subsmooth where you work on the proxy and the subsurface gets updated automatically.

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        • GaieusG Offline
          Gaieus
          last edited by

          Too big silence from Jim's side IMO. I guess he is already thinking on it! 😄

          Gai...

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          • S Offline
            sepo
            last edited by

            It could be mighty useful script.

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            • plot-parisP Offline
              plot-paris
              last edited by

              what I truly would love to see is the possibility to add (and delete) pins to get an extended amount of control over the distortion of a texture (should of course work on curved surfaces too).

              multi_pins.jpg
              I think this idea was mentioned already somewhere in the forum.

              the workflow of unfolding a shape to texture it could work almost like adjusting a texture today in SketchUp:

              you right click the object and choose "Texture > 2D Mapping" - then you get an unfolded version of the shape (while you still see a pale version of the original geometry- like the rest of a model is shown when you edit a component) with the texture projected on it. now you use the pins (or even add some... 😉 ) to position the image. then you hit "Enter" to confirm.

              now that would be an incredibly easy but nevertheless flexible way of mapping textures! 😍

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              • K Offline
                kwistenbiebel
                last edited by

                👍 Plot Paris.
                Your method with the pins would be simple and very effective.
                Very Sketchup-like.

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                • soloS Offline
                  solo
                  last edited by

                  I have downloaded the unfold .rb and it unfolds as expected, how does on refold back to original shape after that?

                  Is there anyway it can auto unfold and refold?

                  http://www.solos-art.com

                  If you see a toilet in your dreams do not use it.

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                  • soloS Offline
                    solo
                    last edited by

                    This is how i would imagine it to work.


                    http://img136.imageshack.us/img136/971/uvmappingmm8.jpg


                    ivyball.skp

                    http://www.solos-art.com

                    If you see a toilet in your dreams do not use it.

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                    • W Offline
                      Whaat
                      last edited by

                      I think this can be done. I was meaning to ask Jim about this myself but you beat me to it, biebel!

                      Jim,

                      Manipulating uvs with the SketchUp API is very finicky. I gained a fair bit of experience with it when I implemented multiple UV sets in SkIndigo. I would be happy to help you out with this.

                      SketchUp Plugins for Professionals

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                      • soloS Offline
                        solo
                        last edited by

                        😍

                        I smell a solution on the horizon!!

                        http://www.solos-art.com

                        If you see a toilet in your dreams do not use it.

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                        • K Offline
                          kwistenbiebel
                          last edited by

                          Cool!
                          By the way, I think Plot-Paris' suggestion about 'pin control' on 3D surfaces (just like we now have on 2D) is really worth investigating as well.

                          It's by far the simplest concept, and no need to go to Photoshop.
                          I can imagine e.g having a sphere (or any other freeform), assigning a texture to it and moving pins around the spherical surface to 'correct' the distortions of the texture until it looks good. Than hit 'bake texture' (or just 'apply') and the new UV's are in place.
                          Just like it works now on 2D surfaces.

                          http://i140.photobucket.com/albums/r3/kwistenbiebel1/multi_pins.jpg

                          Awesome!

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                          • soloS Offline
                            solo
                            last edited by


                            http://img175.imageshack.us/img175/7724/concemv1.jpg

                            http://www.solos-art.com

                            If you see a toilet in your dreams do not use it.

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                            • soloS Offline
                              solo
                              last edited by

                              Make a cone shape and then project the texture attached below to the cone from above view, notice it will map the shape of the cone perfectly without distortion.


                              camo1.jpg

                              http://www.solos-art.com

                              If you see a toilet in your dreams do not use it.

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                              • FrederikF Offline
                                Frederik
                                last edited by

                                Oohhh... I am goosey all over... 😄
                                This sure looks like an awesome feature..!! 👍
                                Would LOVE to have this in SU...!!!

                                Cheers
                                Kim Frederik

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                                • J Offline
                                  Jim
                                  last edited by

                                  I have been following, but I don't know the first thing about UV mapping.

                                  @unknownuser said:

                                  http://i140.photobucket.com/albums/r3/kwistenbiebel1/SU/newuv_tb.jpg

                                  I'm not sure I understand how this image was created. I don't think it is a simple unfolding. Has there been some deformation of faces in order to close gaps?

                                  Hi

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                                  • K Offline
                                    kwistenbiebel
                                    last edited by

                                    That image derives from (soft) selecting parts of a 3D human body model.
                                    The different selected groups (hands, head, etc...) are unfolded on their own so for each item a different texture can be made/edited in Photoshop. So the splitting up thing is user based. The smallest parts you see are finger joints, as they need refined Pshop maps applied etc...

                                    This example off course is the most complex one, where different parts of the model get unfolded seperately.
                                    Solos sphere demonstration (see his images)or Howardshongs apple are somewhat closer to daily use in SU I guess, but the principle remains the same.

                                    The '3D Pin method' earlier described would even make it much more WYSIWYG, as you can directly see the effect of moving a pin on the 3D surface.

                                    Stuff to think about 😉....

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                                    • RichardR Offline
                                      Richard
                                      last edited by

                                      I think the two mapping techniques being discussed here are different or should be! the rewrapping versus pinned deformation!

                                      This function of wrapping and rewrapping is quite common to other modelling and texturing apps. Maybe someone with one of these could show example!

                                      [BUILTBRAND.COM.AU](http://builtbrand.com.au/)

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                                      • plot-parisP Offline
                                        plot-paris
                                        last edited by

                                        I think the multi-pin-method should be used throughout the whole texturin process (so that you can apply complicated distortions even to a simple rectangle shape).

                                        I like the idea to select the "2D Mapping" tool from the standart context menu for manipulating textures.

                                        2dmapping.jpg
                                        if you simply select the 2D Mapping option and an unfolded copy of the object is shown, on which you can position your texture - when you are done, press enter and the only thing that remains is the perfectly textured 3D model (no manually unfolding and refolding geometry - very fast and easy workflow!) 😛

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                                        • S Offline
                                          sorgesu
                                          last edited by

                                          Because I just recently became interested in this subject, I found this on a search and I'm resurrecting.

                                          Further to the above speculations, I was thinking it would be great to be able to substitute a whole group of textures that are mapped to the subcomponents of a model,such as a person or a car for instance. That way, instead of providing the person or car in various colour verisons as an skp, all you need to do is substitute a material library on an existing model. If one must create a new skp for the same model, in a different colour, or maybe with some different detailing, when you create the variations you would have to go through mapping all the compoenets one by one again on the same model. Having a swap feature for the material "set" would be great.

                                          Susan Sorger
                                          Former Seller Hand Rendered Entourage
                                          Former Canadian Authorized Training Centre, SketchUp

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                                          • S Offline
                                            sorgesu
                                            last edited by

                                            okay, I found a ruby script on Didier's site: Global material changer.
                                            It is almost doing exactly what I want. It replaces any one or "ALL" of a the materials on an model/component. But your choices for replacing are only with a single default material or something from the existing list. So how difficult to modify this so that you can replace with a material set that has some built in- one to one relationship to the existing materials? Maybe same name with a numeric modifier?

                                            Susan Sorger
                                            Former Seller Hand Rendered Entourage
                                            Former Canadian Authorized Training Centre, SketchUp

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