Specify options in the Control Bar.
Define the sphere by clicking two points on a View window.
The Sphere tool has the following options:
- Input - How the sphere is defined, by center and radius, two corners, or center and corner.
- rder - Order of the NURBS surface.
- W - number of points in the width direction (along the equator).
- H - number of points in the height direction (from pole to pole).