Tool

NURBS Curve

Primitive Curves

Construct a NURBS curve from control points

Docs for v2.1.18, the latest version.

ID

tool-primitive-curves-nurbs-curve

Group

Primitive Curves

Plugin

Tool

Keywords

Non-uniform
rational
B-spline
crv
6 inputs, 1 output

Ports

Inputs

6

What the node takes in, from wires or typed values.

Periodic

Boolean

Default false

Periodic (closed) curve

Clamped

Boolean

Default true

Clamped (open) curve

Degree

Number

Default 3

Curve degree (1-7)

Weights

Number

Control point weights (optional, defaults to all 1.0)

Knots

Number

Knot vector (optional, overrides auto-generated uniform knots)

Point 1

Point

Point or point array

Outputs

1

What the node gives out, to wire into other nodes.

Curve

Curve

Resulting NURBS curve

Creation method#

There are two options for creating a NURBS Curve node.#

  • The first way to create a NURBS Curve node is using the search list, which is opened by double left-clicking in the workspace. You can write the name of the node you need or words associated with this node.
    • Non-uniform , rational , B-spline , crv
  • The second way is to select a NURBS Curve node from the menu that opens from the top left.
    • Menu > Tool > Primitive Curves > NURBS Curve

Steps#

  • Create a NURBS Curve node.
  • Connect a boolean value to the first port that shows the open or close curve.
  • Connect the degree of the curve to the second port.
  • Connect an array of points or a point to the third port, this port has the function of adding ports to which you can connect other points.

Connect a boolean value to the first port that shows the open or close curve. Connect the degree of the curve to the second port. Connect an array of points or a point to the third port, this port has the function of adding ports to which you can connect other points. On the output port, you will receive the resulting NURBS curve.

See also#

Interpolate
NURBS Curve PWKD

History

First documented in v2.1.18

Oct 20, 2026

Versions before it were published before changes were recorded.