Tool

Arc 3Pnt

Primitive Curves

Create an arc defined by three points

Docs for v2.1.18, the latest version.

ID

tool-primitive-curves-arc-3pnt

Group

Primitive Curves

Plugin

Tool

Keywords

arc3Pnt
a3
3 inputs, 2 outputs

Ports

Inputs

3

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

Point 1

Point

Default [-10,0,0]

First point on arc

Point 2

Point

Default [0,10,0]

Second point on arc

Point 3

Point

Default [10,0,0]

Third point on arc

Outputs

2

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

Curve

Curve

Resulting arc

Radius

Number

Circle radius

Creation method#

There are two options for creating an Arc 3Pnt node.#

  • The first way to create an Arc 3Pnt 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.
    • arc3Pnt , a3
  • The second way is to select an Arc 3Pnt node from the menu that opens from the top left.
    • Menu > Tool > Primitive curves > Arc 3Pnt

Steps#

  • Create an Arc 3Pnt node.
  • Connect the start point of the arc to the first port.
  • Connect the point on arc to the second port.
  • Connect the endpoint of the arc to the third port.

Once the node is created, connect the start point of the arc to the first port, a point on the arc to the second port, and the endpoint of the arc to the third port. At the output ports, you will get the resulting arc and its radius.

See also#

Circle
Circle 3Pnt
Arc
Arc SED

History

First documented in v2.1.18

Oct 20, 2026

Versions before it were published before changes were recorded.