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    Barley Twist Spirals

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    • gillesG Offline
      gilles
      last edited by

      check this, and Dave is right, you don't need so much segments in your vertical curves.
      You must consider the purpose of creating the model:

      make a render
      creating shape for produtcs
      create a catalog of your products for architects....

      Stay low poly as far as you can, go see to the gallery and you will see impressives models with low poly.

      ho ho cross post πŸ˜„


      soft.png

      " c'est curieux chez les marins ce besoin de faire des phrases "

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      • A Offline
        archturn
        last edited by

        That did it
        Thanks

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        • pbacotP Offline
          pbacot
          last edited by

          @dave r said:

          Peter, yes, you can get the intersect but there'll be no faces created, in this case, to terminate the twist geometry.

          Take a look at the example.

          In the foreground there are two components. I opened the cylinder for editing and performed Intersect Faces>With Model. The faces were intersected and edges were created at the intersection but notice there are no faces in the resulting notch.

          In the background, the box is in the same context as the cylinder. After intersection and deleting the waste, there are faces created in the notch.

          That's clear Dave. But in this case the faces we want are already formed. By the intersection performed, we don't want faces formed, we just want to create cut along the intersection. Worked fine as in my example.

          MacOSX MojaveSketchUp Pro v19 Twilight v2 Thea v3 PowerCADD

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          • A Offline
            archturn
            last edited by

            Ta Daaaaaa
            I want to say a big thank you to all that helped. I think I finally got it. As it turned out the intersecting was the most difficult for me to get. With the screw plugin there is really not much to it doing the barley twist.
            I hadn't learned about resizing to get larger faces before - big plus there. I had to read and re-read Dave and Peter and Gilles post to finally get the intersection part. Thanks all!!

            Screen Shot 2013-01-31 at 6.55.51 PM.png

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            • Dave RD Offline
              Dave R
              last edited by

              Hey! That turned out nice. Good work.

              Etaoin Shrdlu

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              • pbacotP Offline
                pbacot
                last edited by

                Yeah, that's a nice one! Thanks for starting this thread too!

                MacOSX MojaveSketchUp Pro v19 Twilight v2 Thea v3 PowerCADD

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                • gillesG Offline
                  gilles
                  last edited by

                  @pbacot said:

                  Yeah, that's a nice one! Thanks for starting this thread too!

                  +1 πŸ‘

                  Good job, any chance you attach the model?
                  Just curiosity. πŸ˜‰

                  " c'est curieux chez les marins ce besoin de faire des phrases "

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                  • A Offline
                    archturn
                    last edited by

                    @gilles said:

                    Good job, any chance you attach the model?
                    Just curiosity. πŸ˜‰

                    Absolutely
                    N112_2.skp

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                    • Dave RD Offline
                      Dave R
                      last edited by

                      Thanks for posting that. I see a few issues with it but I expect it'll work for your needs.

                      There are some missing faces and some unneeded hidden edges.

                      Etaoin Shrdlu

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                      • A Offline
                        archturn
                        last edited by

                        @dave r said:

                        Thanks for posting that. I see a few issues with it but I expect it'll work for your needs.

                        There are some missing faces and some unneeded hidden edges.

                        I just spotted the missing faces and fixed them but what do you mean by unneeded hidden edges. How to avoid them? I scaled up 100 times. Makes me think I should have scaled up more?

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                        • Dave RD Offline
                          Dave R
                          last edited by

                          The unneeded edges I was referring to can be seen if you turn on Hidden Geometry (View menu)

                          Also more missing faces at the bottom.
                          unneeded.png
                          unneeded2.png

                          If you used components instead of groups you would reduce much of the work needed to draw this. That applies to other things, too.

                          Etaoin Shrdlu

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                          • A Offline
                            archturn
                            last edited by

                            @dave r said:

                            The unneeded edges I was referring to can be seen if you turn on Hidden Geometry (View menu)

                            Also more missing faces at the bottom.
                            [attachment=1:zqm4jyv1]<!-- ia1 -->unneeded.png<!-- ia1 -->[/attachment:zqm4jyv1]
                            [attachment=0:zqm4jyv1]<!-- ia0 -->unneeded2.png<!-- ia0 -->[/attachment:zqm4jyv1]

                            If you used components instead of groups you would reduce much of the work needed to draw this. That applies to other things, too.

                            Are you saying that using groups instead of components is the reason for the unneeded edges?

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                            • Dave RD Offline
                              Dave R
                              last edited by

                              No. But when you use groups instead of components and need to edit them, you have to touch every copy of them to make the changes. If you use components you only need to edit to modify all copies. If you look at the twist I posted you'll see it is made of three identical parts. Each is a component so modifications to one will propagate to the others.

                              You could split the barley twist into smaller identical units to make construction and editing easier and faster. It'll also result in a lower file size.

                              Etaoin Shrdlu

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                              • A Offline
                                archturn
                                last edited by

                                @dave r said:

                                No. But when you use groups instead of components and need to edit them, you have to touch every copy of them to make the changes. If you use components you only need to edit to modify all copies. If you look at the twist I posted you'll see it is made of three identical parts. Each is a component so modifications to one will propagate to the others.

                                You could split the barley twist into smaller identical units to make construction and editing easier and faster. It'll also result in a lower file size.

                                For a two start twist, my workflow was to create a one turn twist, group, hide the edges that would join the copies, copy and rotate 180 degrees, copy those two twist and array upwards. It seems since I have hidden the adjoining lines at first this shouldn't be a problem. (But in fact, I see that the finish model shows even rendered where those hidden lines are.)
                                I understand the concept of using components and the advantage in terms of editing one propagates to all. My thinking was to edit the group first then copy and avoid "make unique" for the bottom and top since the top and bottom have to be uniquely edited? Is my thinking right here? Am I missing something else?

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                                • Dave RD Offline
                                  Dave R
                                  last edited by

                                  My preference would be to make a component from the git go and make the copies. Make Unique is a trivial thing when it comes to that. For a model such as yours, starting with components makes it easier to see how the whole thing is developing as you edit. If something isn't going the way you expect, the earlier you figure that out, the easier it is to back up and fix it.

                                  i started to write more about using components instead of groups but I won't get on my soapbox about that now. πŸ˜‰ I'll just say I have never once in more than 9 years of using SketchUp found a situation where a group made more sense than a component.

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                                  • gillesG Offline
                                    gilles
                                    last edited by

                                    Here is your model with some corrections and the use of components,note it is 650Kb instead of 1950.


                                    N112_2_V6.skp

                                    " c'est curieux chez les marins ce besoin de faire des phrases "

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                                    • A Offline
                                      archturn
                                      last edited by

                                      @dave r said:

                                      My preference would be to make a component from the git go and make the copies. Make Unique is a trivial thing when it comes to that. For a model such as yours, starting with components makes it easier to see how the whole thing is developing as you edit. If something isn't going the way you expect, the earlier you figure that out, the easier it is to back up and fix it.

                                      i started to write more about using components instead of groups but I won't get on my soapbox about that now. πŸ˜‰ I'll just say I have never once in more than 9 years of using SketchUp found a situation where a group made more sense than a component.

                                      Got it, will do
                                      Thanks

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                                      • Dave RD Offline
                                        Dave R
                                        last edited by

                                        Gilles version of your model illustrates very clearly the reduction in file size that I mentioned earlier. πŸ˜‰

                                        And even 100 of them is only 820 Kb. That's a couple of hours of production in your shop, right?


                                        N112_2_V6 100.png

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                                        • A Offline
                                          archturn
                                          last edited by

                                          @gilles said:

                                          Here is your model with some corrections and the use of components,note it is 650Kb instead of 1950.

                                          Looks better than mine. So you redid the spiral?

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                                          • Dave RD Offline
                                            Dave R
                                            last edited by

                                            @unknownuser said:

                                            @unknownuser said:

                                            found a situation where a group made more sense than a component.

                                            You have some plugins who works only with groups! πŸ˜‰

                                            You're right. And when I use them I wind up converting the groups to components. I'd be happier if a component was just created by the plugin.

                                            I haven't found a need to use any plugins that only work on groups.

                                            Etaoin Shrdlu

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