[page:Curve] →

# [name]

Create a smooth 3d quadratic bezier curve, defined by a startpoint, endpoint and a single control point.

## Example

`var curve = new THREE.QuadraticBezierCurve3( new THREE.Vector3( -10, 0, 0 ), new THREE.Vector3( 20, 15, 0 ), new THREE.Vector3( 10, 0, 0 ) ); var points = curve.getPoints( 50 ); var geometry = new THREE.BufferGeometry().setFromPoints( points ); var material = new THREE.LineBasicMaterial( { color : 0xff0000 } ); // Create the final object to add to the scene var curveObject = new THREE.Line( geometry, material );`

## Constructor

### [name]( [param:Vector3 v0], [param:Vector3 v1], [param:Vector3 v2] )

[page:Vector3 v0] – The starting point
[page:Vector3 v1] – The middle control point
[page:Vector3 v2] – The ending point

## Properties

See the base [page:Curve] class for common properties.

### [property:Boolean isQuadraticBezierCurve3]

Used to check whether this or derived classes are QuadraticBezierCurve3s. Default is *true*.
You should not change this, as it used internally for optimisation.

### [property:Vector3 v0]

The startpoint.

### [property:Vector3 v1]

The control point.

### [property:Vector3 v2]

The endpoint.

## Methods

See the base [page:Curve] class for common methods.

## Source

[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]