---

title: QuadraticBezierLine sourcecode: src/core/QuadraticBezierLine.tsx

<Grid cols={4}> <li> <Codesandbox id="2ij9u" /> </li> </Grid>

Renders a THREE.Line2 using THREE.QuadraticBezierCurve3 for interpolation.

<QuadraticBezierLine
  start={[0, 0, 0]}               // Starting point, can be an array or a vec3
  end={[10, 0, 10]}               // Ending point, can be an array or a vec3
  mid={[5, 0, 5]}                 // Optional control point, can be an array or a vec3
  color="black"                   // Default
  lineWidth={1}                   // In pixels (default)
  dashed={false}                  // Default
  vertexColors={[[0, 0, 0], ...]} // Optional array of RGB values for each point
  {...lineProps}                  // All THREE.Line2 props are valid
  {...materialProps}              // All THREE.LineMaterial props are valid
/>

You can also update the line runtime.

const ref = useRef()
useFrame((state) => {
  ref.current.setPoints(
    [0, 0, 0],
    [10, 0, 0],
    // [5, 0, 0] // Optional: mid-point
  )
}, [])
return <QuadraticBezierLine ref={ref} />
}