The Envelope option will limit the modeling to a 3D convex polyhedron that confines the control points. Think of it as a bathtub that is custom-fit to the control points.
To read more and view an example, please click HERE.

The Envelope option will limit the modeling to a 3D convex polyhedron that confines the control points. Think of it as a bathtub that is custom-fit to the control points.
To read more and view an example, please click HERE.
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