I wanted to know if anyone has an approach for this type of problem.

I have an odd outline that is given to me. In this particular case I need to fill in the area outlined blue with “a surface.” Because it’s 5-sided, that means more than one surface. In this particular case that surface(s) needs to be tangent to the purple shape but needs only to be coincident to the red (not tangent but needs to be not way different—there will be a gap inserted below the red to conceal any slight discontinuity)

The rest of the area should be as smooth as possible. There is obviously going to be some undulation. The curve at the lower left is going to create an indentation. That indentation should flow horizontally.

I have tried to divide the open area in many ways. My problem is that I have is that I always get a noticeable kink at my division curve.

Is there a good method to divide a border like this up such that one can create surfaces that will flow smoothly from one to the next?

Problem Filling.3dm (3.0 MB)