I want to use ArrayCrvOnSrf Command in a C# code. But I cant find it.
what is the equivalent to ArrayCrvOnSrf Command in Rhinocommon?

I think there is no such method in Rhinocommon. You have to do it by yourself.

  1. Divide curve, you get dividing points
  2. Find surface parametrs at given points, evaluate surface at these prms - construct tangent plane at every parameter
  3. Orinent your object(s) on these planes

Thanks a lot.

I usually this algoritem to orient Items on a lofted or other surfaces.what do you think about this?

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