Use the Swoop command to dynamically create, shape and edit smooth B-surfaces
with desirable and predictable shape properties.
The following animation shows a Swoop surface created and shaped using bend
and skew controls.
Swoop surface characteristics:
Pole regularity for swoop surfaces is maintained using coordinated pole
movements. This is different from other pole-driven freeform surfaces that
depend on independent movement of poles.
Pole regularity results in naturally pure shapes with good flow.
No existing geometry is required for construction of a Swoop surface.
You change surface radii in simple proportion to their original settings. You
cannot directly define radii of curvature, but you can shape a surface by
applying relative percentage changes to the existing radii.
As you shape a Swoop surface you can use curvature and reflection line
analysis to help you visualize the form you want. See the Face Analysis help
for details.
How swoop command works mentioned in Video: