Primitives

Reference

Mode

Object Mode and Edit Mode

Menu

Add ‣ Curve

Hotkey

Shift-A

参考

When adding curves there are some common options like other Objects.

In Object/Edit Mode, the Add Curve menu, provides five different curve primitives:

Bézier Curve

Adds an open 2D Bézier curve with two control points.

Bézier Circle

Adds a closed, circle-shaped 2D Bézier curve (made of four control points).

NURBS Curve

Adds an open 2D NURBS curve, with four control points, with Uniform knots.

NURBS Circle

Adds a closed, circle-shaped 2D NURBS curve (made of eight control points).

Path

Adds a NURBS open 3D curve made of five aligned control points, with Endpoint knots and the Curve Path setting enabled.