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How to draw a plane not coplanar

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  • O Offline
    Orionis98
    last edited by 28 days ago

    First of all, let me say that I'm not an expert and I use SU only for my personal hobby, since years. I'm Italian and I use the localized versione so please forgive me if I use wrong terms or terminologies.

    I wish to draw a surface to connect two perpendicular plane at different heights. It should be a ramp between to roads with an angles of, in example, of 45°. I include an image of a simple test.
    I can not find a solution; I presume that is because the two connecting lines are not planar, but how to do it, if possible?

    I tried the FollowMeAndKeep plugin, but it does not return an acceptable result due that the two closing lines are perpendicular.

    I also draw the shape on the XY planes and the I rotated the Y (green axe) up to the desired height, but, a part the the lengh correction (cosine of angle) I should take in account, the big problem is that the ramp surface is also rotated giving a funny result (I image a car that will drive onto an inclined plane !)

    I assume that this is not doable in SU or, better, I'm too stupid.
    This is the image:
    simple_ramp.jpg

    Final note: please consider that the road surface should be quite worked (rails, depth, middle lines...) later.

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    • J Offline
      Jean Lemire
      last edited by 27 days ago

      Click in sequence on the Scenes tabs of this SU file for ideas.

      Ramp between 2 roads at 90 degrees.skp

      Jean (Johnny) Lemire from Repentigny, Quebec, Canada.

      O 1 Reply Last reply 26 days ago Reply Quote 0
      • O Offline
        Orionis98 @Jean Lemire
        last edited by 26 days ago

        @Jean-Lemire
        Thank you Jean, I saw your drawing. It is something already tried, unfortunately the resulting ramp is not really a surface but the sum of two surfaces smoothed so it can not be reworked further (I can not push it).
        I found a possible (ugly and unnatural) solution adding a triangle at the top ramp end so to have the two connecting lines at the same level.
        With some aesthetic additions it could be used, but I can not say to be fully satisfied.
        I would post the result of my attempt, but possibly tomorrow since it is almost midnight now and here.
        I wonder how many users have had the same probles and how they fix it.
        Anyway, thanks again.

        O 1 Reply Last reply 26 days ago Reply Quote 0
        • O Offline
          Orionis98 @Orionis98
          last edited by 26 days ago

          @Orionis98 said in How to draw a plane not coplanar:

          @Jean-Lemire
          I would post the result of my attempt, but possibly tomorrow since it is almost midnight now and here.

          Here are the images of my solution: the building one and the final one added to world scene.
          Not the maximum, but anyway.

          simple_ramp_OK.jpg

          Railway_overpass.jpg

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          • J Offline
            Jean Lemire
            last edited by 26 days ago

            Click in sequence on the scenes tabs of this SU file for more ideas.

            Notice that Orionis98 shows a better start and finish. The real profile shall have a smooth curves at both ends of this junction road.

            ramp-between-2-roads-at-90-degrees 2.skp

            A better approach might be as in this file.

            ramp-between-2-roads-at-90-degrees 3.skp

            And the, the junction road could also have an horizontal curve so that the transitions between it and both roads are smoother than with a sharp angle.

            Jean (Johnny) Lemire from Repentigny, Quebec, Canada.

            O 1 Reply Last reply 24 days ago Reply Quote 0
            • O Offline
              Orionis98 @Jean Lemire
              last edited by 24 days ago

              @Jean-Lemire
              Unfortunately I can not open your file; I'm using SU2020 and your scene requires the SU2022. Could you pls repost it downgraded?
              Thanks

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              • J Offline
                Jean Lemire
                last edited by 19 days ago

                Here they are in 2017 format.

                ramp-between-2-roads-at-90-degrees 2.skp

                ramp-between-2-roads-at-90-degrees 3.skp

                Jean (Johnny) Lemire from Repentigny, Quebec, Canada.

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