[page:Curve] →

# 二维二次贝塞尔曲线（[name]）

创建一条平滑的二维 二次贝塞尔曲线， 由起点、终点和一个控制点所定义。

## 代码示例

`const curve = new THREE.QuadraticBezierCurve( new THREE.Vector2( -10, 0 ), new THREE.Vector2( 20, 15 ), new THREE.Vector2( 10, 0 ) ); const points = curve.getPoints( 50 ); const geometry = new THREE.BufferGeometry().setFromPoints( points ); const material = new THREE.LineBasicMaterial( { color: 0xff0000 } ); //Create the final object to add to the scene const curveObject = new THREE.Line( geometry, material );`

## 构造函数

### [name]( [param:Vector2 v0], [param:Vector2 v1], [param:Vector2 v2] )

[page:Vector2 v0] – 起点
[page:Vector2 v1] – 中间的控制点
[page:Vector2 v2] – 终点

## 属性

共有属性请参见其基类[page:Curve]。

### [property:Vector2 v0]

起点

### [property:Vector2 v1]

控制点

### [property:Vector2 v2]

终点

## 方法

共有方法请参见其基类[page:Curve]。

## 源代码

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