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Im trying to create a racetrack and want to add curbs to the edge of some corners but dont know how to do this properly.

This is what I have done so far: I used a path for the track layout, create a plane and used a array and curve modifier so the plane follows the path I created. Thats my racetrack. Then I sculpted a simple landscape with some altitude variations and used the shrinkwrap modifier on the racetrack so that it follows the landscape altitude. Now I want to add curbs to certain parts of the racetrack but I don't know how to get them to follow exactly the edge of the track.

I hope you can help me! :)Corner

New Blender File with Inner Curbs:

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  • $\begingroup$ Hello, if you are ok to apply the Array then you can extrude your road to give it thickness then extrude the curbe where it is needed. If you don't want to apply the Array, you should create another object that will follow the same curve and create the curbs where it is needed. But you can't create the curb in the same object as the road if you want to keep the Array, the Array repeats a mesh. $\endgroup$
    – moonboots
    Commented Oct 24, 2023 at 16:40
  • $\begingroup$ Alright, that would work but is there no easy way to simply have an object (my curb) following exactly the edge of the track? Because extruding and shaping the curbs manually is probably quite time consuming and at the same time the curbs will then not always have the exact same shape I think. $\endgroup$
    – ultraaura
    Commented Oct 24, 2023 at 17:14
  • $\begingroup$ again you can make the curb object follow the same curve as the road $\endgroup$
    – moonboots
    Commented Oct 24, 2023 at 17:20
  • $\begingroup$ Sure, I know but the problem is, that I have shrink wrapped the road to a 3d surface I created. On a flat track this works for me as well but not on a sculptured surface, you know what I mean? :) Let me know if I should share more images or something similar... :) $\endgroup$
    – ultraaura
    Commented Oct 24, 2023 at 17:24
  • $\begingroup$ i would suggest providing the blend file as it is so we see what you have done and provide solution proposals. $\endgroup$
    – Chris
    Commented Oct 24, 2023 at 17:44

1 Answer 1

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To make your curbs, apply the Shrinkwrap of your road, duplicate one of its edge, convert to curve, make sure that it is Twist Method > Z-Up, use this curve for the curbs to follow about the same shape.

If I check your file, the problem is that the curve is made of 2 curves, it is interrupted at the 10th control point, you need to fill between the 2 curves then dissolve the vertex:

enter image description here

As for the inner curbs, I'm afraid there's no magic solution, you could offset it like that:

enter image description here

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  • $\begingroup$ Oh, I didnt saw that... Now its working around the outside of the corner, thank you! But when I do the same for the inside of a corner the curb gets weirdly deformed. Is there a possibility to change that? Also, how can I set the lower edge of the curb and not the middle to run along the racetrack edge? (Let me know if I should share more images or files for clarification.) :) $\endgroup$
    – ultraaura
    Commented Oct 25, 2023 at 19:02
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    $\begingroup$ share your new file for the inner curbs because I'm not sure what's the problem, as for the lower edge, move the mesh of the object in Edit mode? Also remove the side faces so that the final object has no inner faces $\endgroup$
    – moonboots
    Commented Oct 25, 2023 at 19:08
  • $\begingroup$ Alright, I have shared another file where I tried to add a inside curb, maybe that helps. Thank you for your effort. :) $\endgroup$
    – ultraaura
    Commented Oct 26, 2023 at 8:28
  • $\begingroup$ I don't think that there's any easy solution, you need to move it so that the faces don't overlap $\endgroup$
    – moonboots
    Commented Oct 26, 2023 at 8:48
  • $\begingroup$ Alright, thank you very much! $\endgroup$
    – ultraaura
    Commented Oct 26, 2023 at 10:42

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