Is it possible? from a single closed curve with non coplanar points , like the one in the image above, I need to fill it with a non-planar surface, or delaunay mesh ( delaunay only connect points with the reference of a single plane )
instead of a single closed curve, could you supply only the outer two curves? I think if you have two parallel-ish polylines it wouldn't be that hard to try and triangulate your way down the middle.