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    The best way to make roads that bend and go up or down?

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    • pietervP Offline
      pieterv
      last edited by

      @Gaieus:

      I have tried the follow me and keep tool and it is indeed more intuitive and faster to use. Thanks for the advice!

      @Charly2008

      I have had a look at the Curviloft and Perpendicular Face plugins and they look very interesting. However, and correct me if I am wrong, I think that even though these are interesting plugins, the real difficulty lies in making the "initial path" or curve the road should follow. These tools are just another way, like Shape Bender and Follow me and keep, to make a road out of the initial path.

      I have encountered a few problems making this path. If you don't do it very carefully you get things like this:

      http://users.skynet.be/fb517223/interchange/interchange-01.jpg

      http://users.skynet.be/fb517223/interchange/interchange-03.jpg

      I think a part of the problem are the limitations of the curve tool in sketchup.

      http://users.skynet.be/fb517223/interchange/lijnen-01.jpg

      http://users.skynet.be/fb517223/interchange/lijnen-02.jpg

      http://users.skynet.be/fb517223/interchange/lijnen-03.jpg

      http://users.skynet.be/fb517223/interchange/lijnen-04.jpg

      Does anyone know a solution to this?

      Thanks in advance!

      This is my website:
      Citypixels - 3d Visualisatie Architectuur

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      • Rich O BrienR Offline
        Rich O Brien Moderator
        last edited by

        Hi Pieterv,

        Have you tried 1001bits toolset? This has a 'Extrude along sloping curved path' tool which way help?

        Here's the userguide.

        It also has 'Slope selected edges' tool which might suit your modeling needs.

        There's a 30day trial for the Pro version so no harm checking it out.

        Download the free D'oh Book for SketchUp πŸ“–

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        • BoxB Offline
          Box
          last edited by

          And Fredo's Bezier/ Spline tool might help with your curves.

          http://forums.sketchucation.com/viewtopic.php?f=323&t=13563

          Plus you can bend your curves using Fredo scale/Radial bender.

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          • pietervP Offline
            pieterv
            last edited by

            Hey Rclub24,

            I have had a look at the 1001bits userguide and I think "Extrude along sloping curved path" is pretty similar to Shape Bender and Follow me and keep. Thanks for the advice anyway!

            This is my website:
            Citypixels - 3d Visualisatie Architectuur

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            • pietervP Offline
              pieterv
              last edited by

              Hey Box,

              I am trying the Bezierspline tool and it looks very promising. I will try to post some examples when I'm a bit more advanced.

              Thanks a lot!!

              This is my website:
              Citypixels - 3d Visualisatie Architectuur

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              • J Offline
                Jim57
                last edited by

                Another way that NURBS curves are better for defining the path of the road is you can pull the handles to make them more parabolic. My understanding is that if roads are built using circular arcs, they are hard to drive. You have to pull the wheel from straight to the proper radius at an instant, instead of a smooth transition over (a brief) time.

                Just a design consideration, it says nothing for modeling.

                Best,
                Jim

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                • pietervP Offline
                  pieterv
                  last edited by

                  Hey Jim,

                  Just to be clear, by NURBS you mean tools like bezierspline?

                  This is my website:
                  Citypixels - 3d Visualisatie Architectuur

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                  • D Offline
                    danbig
                    last edited by

                    Another thought on a workaround:

                    If you can get the lines you want in illustrator, why not export to DWG from there and import into sketchup for a starting point?

                    1 Reply Last reply Reply Quote 0
                    • pietervP Offline
                      pieterv
                      last edited by

                      Hi everyone again!

                      After some testing I have figured out what the best way is for me to make roads that bend an go up or down at the same time.

                      I mainly use two plugins:

                      Fredo's BezierSpline plugin: (Of which I only use the Uniform B-Spline tool because of the smooth results for this purpose.)

                      http://forums.sketchucation.com/viewtopic.php?f=323&t=13563

                      and Wikii's Follow Me and Keep plugin: (to make a road out of the curve)

                      http://forums.sketchucation.com/viewtopic.php?t=16465

                      This way I was able to make the following interchange:

                      http://users.skynet.be/fb517223/interchange/mega-probeersel-140.jpg

                      I think the main drawback for the moment is that you have to devide the curves you make with BezierSpline into really a lot of sides until they get smooth. I can be wrong, but it also appears to me that the sides are not equal destributed along the curve.

                      @Dabbig:

                      Thanks, that might be usefull too one day!

                      This is my website:
                      Citypixels - 3d Visualisatie Architectuur

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                      • Chris FullmerC Offline
                        Chris Fullmer
                        last edited by

                        That is a nice interchange!

                        Lately you've been tan, suspicious for the winter.
                        All my Plugins I've written

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                        • W Offline
                          wyatt
                          last edited by

                          Cool. How long did that take once you figured out the right plugins to use?

                          1 Reply Last reply Reply Quote 0
                          • pietervP Offline
                            pieterv
                            last edited by

                            That's hard to say in fact, because I didn't work continiously at it. Let's say I worked a couple of hours every day on it for about four or five days. I find it hard to make an estimation though.

                            This is my website:
                            Citypixels - 3d Visualisatie Architectuur

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                            • GaieusG Offline
                              Gaieus
                              last edited by

                              Indeed a nice result (from here at least - don't bother yourelf with smaller flaws like segmentation - Su is just this kind of a tool).

                              Gai...

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                              • pilouP Offline
                                pilou
                                last edited by

                                Remarkable result! πŸ‘

                                Frenchy Pilou
                                Is beautiful that please without concept!
                                My Little site :)

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