Pillowy Skylight

[Andrew_North_Jr]

Hello Everyone, I’m looking to make a curved skylight similar to the one seen in the image however when I go to loft this shape it comes out rough and not smooth, I need a smooth curve linking this rectangular opening to round skylight above. Wondering what the best path forward is to ensure that I get a smooth curved shape with consistent top and bottom boundary. Thanks!

[Lagom]

Hard to understand what exactly you’re after without having the centre cross-section curves and a formal aesthetic concept for how the transition from the top of the bulge into the 90° corners shall look. Here’s one of several possible approaches - pull the CVs of a higher degree surface.

Bulge.3dm (8.2 MB)

[Andrew_North_Jr]

Thanks for the response yeah i believe that I’m going to have to add rails on each side of the rectangle. When using a simple loft like the geometry on the left that shape is not nearly soft enough for the effect that I’m going for.

[Andrew_North_Jr]

Even if I sweep2 and select one of the rails as a sweep shape I get these awkward folds inside the shape.

[Lagom]

You could up the degree of the surface to obtain more CPs, trim with an ellipse, and then pull the trim boundary planar with the surface’s CPs.