reactjs - 如何使用react-spring顺序执行两个动画？

Question

我尝试链接两个 Spring (使用 useChain)，这样一个 Spring 只在另一个 Spring 结束后才开始，但它们是同时进行动画处理的。我做错了什么？

import React, { useRef, useState } from 'react'
import { render } from 'react-dom'
import { useSpring, animated, useChain } from 'react-spring'

function App() {
  const [counter, setCounter] = useState(0)
  const topRef = useRef()
  const leftRef = useRef()
  const { top } = useSpring({ top: (window.innerHeight * counter) / 10, ref: topRef })
  const { left } = useSpring({ left: (window.innerWidth * counter) / 10, ref: leftRef })

  useChain([topRef, leftRef])

  return (
    <div id="main" onClick={() => setCounter((counter + 1) % 10)}>
      Click me!
      <animated.div id="movingDiv" style={{ top, left }} />
    </div>
  )
}

render(<App />, document.getElementById('root'))

这是一个演示问题的codesandbox: https://codesandbox.io/s/react-spring-usespring-hook-m4w4t

Answer 1

我刚刚发现有一个更简单的解决方案，只使用 useSpring:

function App() {
  const [counter, setCounter] = useState(0)

  const style = useSpring({
    to: [
      { top: (window.innerHeight * counter) / 5 },
      { left: (window.innerWidth * counter) / 5 }
    ]
  })

  return (
    <div id="main" onClick={() => setCounter((counter + 1) % 5)}>
      Click me!
      <animated.div id="movingDiv" style={style} />
    </div>
  )
}

示例:https://codesandbox.io/s/react-spring-chained-animations-8ibpi