4-Rail Modification

In this Grasshopper Lesson, I will show you some techniques which you can use to modify the rail curve. By modifying the rail curve you can also design new parametric models. First, you will learn how to model the surface and then we will convert the surface to a stadium.

36 Minutes

166 MB


  • Chris-Ryan

    I’m having a problem with the curve offset. The planes of the curves are wrong, so I use the planes of the frames. But even when I apply the planes to the “offset” module, one of the curves is offset against the others.

  • rezae

    Hi Chris
    The reason arise when we split our surface with planes… So basically periodic surfaces have different directions at the joint so i just simply shift the planes a bit to avoid this direction issue