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原神任意元素转换大法(误

 2 years ago
source link: https://my.oschina.net/codingDog/blog/5038992
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原神任意元素转换大法(误 - 一行代码一行泪 - OSCHINA - 中文开源技术交流社区

标题党勿怪   ε=ε=ε=┌(; ・_・)┘

svg形变动画以前有翻译过一篇文章(https://my.oschina.net/codingDog/blog/2054879),不过那里的动画实现方式是 SMIL 和 css,两者的兼容性和局限性都不小,前者需要你有一定的设计能力,使用相同的锚点数来对图形进行转换,而且有被新标准废弃的趋势,后者有前面的所有缺点,唯二的优势是写起来清晰简洁,而且正在被浏览器逐步支持。

所以这次,我就用了一个在flash时代就鼎鼎大名的前端动画框架——GSAP。gsap提供了动画时间轴的基地,核心的实现是它的一个非常强大的收费插件:MorphSVGPlugin。相较于SMIL和css,它的优势非常明显:

① 可以在不同的形状之间做形变动画,因为插件对所有形状自己实现了一套转化为path路径的算法

② 可以无视两个形状之间的锚点数,插件会自动补足

③ 更平滑的转场,不需要来事先设计锚点位置,插件会自动计算出相邻的锚点来进行形变

④ 只要浏览器支持svg即可创建动画,因为插件只是不停地修改属性值,并没有用到新标准的api。

ok,打完免费广告,代码量不大,直接放出源码。(这里的cdn使用的是社区为codepen提供的特殊版本,不可以进行商用开发,小伙伴们需要注意)

ps:由于网上找不到元素的矢量图,我直接用AI进行了重绘,为了避免锚点过多影响性能,在尽可能还原的基础上去除了部分锚点,位图和矢量图的原稿我就放到文末了,有兴趣自取~

<!DOCTYPE html>
<html lang="zh-cn">
<head>
  <meta charset="UTF-8">
  <title>元素转换大法</title>
  <script src="https://cdn.bootcdn.net/ajax/libs/gsap/3.6.1/gsap.min.js"></script>
  <script src="https://assets.codepen.io/16327/MorphSVGPlugin3.min.js"></script>
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    li.geo {
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    li.hydro {
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    li.cryo {
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<ul>
  <li class="pyro">火</li>
  <li class="anemo">风</li>
  <li class="geo">岩</li>
  <li class="hydro">水</li>
  <li class="cryo">冰</li>
  <li class="electro">雷</li>
  <li class="dendro">草</li>
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              c-7.5-13.2-25.7-30.9-36.9-40.4C250.8,229.1,253,229.9,255.5,230.8 M200.4,259.6c1.5,11.3,5.2,25.7,9.8,37.2
              c1.7,4.4,1.9,4.7,4.3,9.9c1.6,3.5,1.7,3.8,1.2,4.1c-26.2,20.5-5.7,20.6-31.6,0.1c-0.6-0.4-0.6-0.5,1-4c6.8-14.4,12.3-32.5,14.1-46.3
              C199.9,257.1,200.1,256.8,200.4,259.6`,
      color1: '#a5ffff',
      color2: '#8fccd9',
    },
    electro: {
      path: `M200.2,26c18.2,9.2,34.2,18.3,50,31.4c49,36,49.2,107-4.7,130c-56.9,23.3-111.1-64.3-36.5-73.8
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              c55.9-20.5,68-82.3,50.5-133.8c19.5,13.1,33.1,33.6,44,55.7c3.7,7.5,4.1,8,3.6,4.3C363.1,91,282.8,22.5,200.2,26`,
      color1: '#fca7ff',
      color2: '#7a519a',
    },
    dendro: {
      path: `M197,26.3c-26.5,25.2-36.8,69.2,0,89.2c38-7.7,40.2-54.8,6.4-88.7C199.7,22.7,200.1,22.7,197,26.3
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            c-38.4,1.9-49.2,43.6-21.7,70.3c-10.5,0.4-18.4,5.2-20.3,14.9c-0.8,3.6-0.8,3.7,0.8,2.3c12.5-13.4,42.7,1.4,61.6,14.7
            c7.9,4.3,26.6,15.2,19.5,9c-31.6-23.1-67.7-90.3-8-92.2c5.1,0,5,0.3,2.8-4.1C168.7,153.4,156.6,148.2,139.5,149.3 M248.7,149.5
            c-8.9-1.7-34,20.1-20.1,18.8c60.4,3.2,23.2,68.8-8.1,92.2c-3,2.6-2.4,2.6,3.4-0.3c21-10.2,59.6-41,77.3-23.7c1.8,1.7,2,1.3,1.2-2.6
            c-1.6-8.8-10-13.9-20.1-14.3C314.1,189.5,292.6,142.5,248.7,149.5`,
      color1: '#a4e829',
      color2: '#06ac2e',
    },
  }

  let curEleName = 'cryo'

  const setup = function () {
    let tweenShape
    let tweenColor1
    let tweenColor2

    const $path = document.querySelector('#path')
    const $bgStop1 = document.querySelector('#bg-stop-1')
    const $bgStop2 = document.querySelector('#bg-stop-2')
    const curEle = elemental[curEleName]
    $path.setAttribute('d', curEle.path)
    $bgStop1.setAttribute('stop-color', curEle.color1)
    $bgStop2.setAttribute('stop-color', curEle.color2)
    const $ul = document.querySelector('ul')

    // 事件委托
    $ul.onclick = function (e) {
      let $ul_ = e.target.closest('ul')
      if (!$ul_) return
      if (!$ul.contains($ul_)) return
      const newEleName = e.target.className
      const newEle = elemental[newEleName]
      if (newEle) {
        tweenShape = gsap.timeline({ paused: true })
          .to($path, {
              duration: 0.6,
              ease: 'back.inOut(1)',
              morphSVG: newEle.path,
            }
          )
        tweenColor1 = gsap.timeline({ paused: true })
          .to($bgStop1, {
            duration: 0.6,
            stopColor: newEle.color1,
          })
        tweenColor2 = gsap.timeline({ paused: true })
          .to($bgStop2, {
            duration: 0.6,
            stopColor: newEle.color2,
          })
        tweenShape.play()
        tweenColor1.play()
        tweenColor2.play()
        curEleName = newEleName
      }
    }
  }

  setup()
</script>
</body>
</html>

实现效果如下:

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180033_T7KY_1389094.png SVG与PNG源文件地址

180033_T7KY_1389094.png 完整代码戳这里

180033_T7KY_1389094.png在线演示


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