What are handles in spline editing?

What are handles in spline editing?

• A. Secondary control points connected to vertices on a spline or patch object.
• B. Primary control points.
• C. Tangent vectors.
• D. Endpoints of the curve.

Answer: (A)

In spline editing, curvature is shaped by control points and their handles. Handles are the secondary control points attached to a vertex on a spline or patch. They extend from the vertex and define the direction and strength of the curve as it leaves and arrives at that point. By moving these handles, you adjust the local tangent and how sharply the curve bends between primary control points, without moving the endpoints themselves. This distinguishes them from the primary control points, the endpoints of the curve, or the tangent concept itself—the handles are the direct tools you use to sculpt the bend between points.

In spline editing, curvature is shaped by control points and their handles. Handles are the secondary control points attached to a vertex on a spline or patch. They extend from the vertex and define the direction and strength of the curve as it leaves and arrives at that point. By moving these handles, you adjust the local tangent and how sharply the curve bends between primary control points, without moving the endpoints themselves. This distinguishes them from the primary control points, the endpoints of the curve, or the tangent concept itself—the handles are the direct tools you use to sculpt the bend between points.