Hello,

I believe I have a manual solution to this, but given the sheer quantity of features in this repo, there's probably a built in, more robust way to do it than my manual approach. While I've searched for a solution, I've not found one, but I suspect that's because I am not looking in the right sections/issues. I wasn't sure if that's the point of matchInterface maybe?

I've got a gsTensorBSpline<3>. I make it into a multipatch. I've exported it as an iges. The sharp angles along the interfaces where the top, left, and back faces meet anything is fine. However, where the right face meets with the bottom and front, there are pretty sharp seams. I've solved this temporarily by inserting knots at 0.01 and 0.99 and making the corresponding control points on either side of the interface collinear, but I was wondering if there is something built in already that does this: a method to smooth out / ensuring differentiable curvature where faces meet.

Alternatively, if you have a better / recommended way to do it that would work better, I am all ears!