javascript - 将文本向右环绕，在一个圆圈内

Question

我在浏览一些设计灵感网站时发现了一个菜单并从中获得了灵感。

当我点击黑色背景的产品时，如下所示，菜单项应该从左边显示。我已经使用 GSAP 实现了动画部分。我希望菜单项环绕在红色圆圈的圆 Angular 边缘和可见红色区域的中心。问题是菜单项不是从圆心计算的，而是沿着圆的边缘平均定位的。有没有一种动态的方法来计算它，或者我应该通过静态边距和填充来放置它们。正如您所看到的，如果菜单项有两个或更多单词，它应该将自己包裹起来并对齐到自己的中心。我使用了 break 只是为了实现布局。

有人能给我指出正确的方向并帮助我到达目的地吗？干杯。

这是鼓舞人心的图片:https://i.ibb.co/QJFmsXJ/Untitled.png

jQuery(document).ready(function($) {
  var $mainmenu = $('.menu');
  var $menuItemsWrap = $(".sub-menu");
  var $MenuItems = $(".sub-menu li");

  $('.menu').click(function() {
    $('.menu-dummy').css({
      "display": "block",
      "z-index": "5"
    });
    $('.menu').css({
      "display": "none"
    });
    TweenMax.to($menuItemsWrap, 0.6, {
      width: 400,
      height: 400,
      ease: Power1.easeIn
    });
    TweenMax.staggerTo($MenuItems, 0.5, {
      x: 80,
      opacity: 1,
      ease: Power1.easeOut,
      delay: 0.6
    }, 0.1);

  });
  $('.menu-dummy').click(function() {
    $('.menu-dummy').css({
      "display": "none",
    });
    $('.menu').css({
      "display": "block"
    });
    TweenMax.staggerTo($MenuItems, 0.5, {
      x: -80,
      autoAlpha: 1,
      ease: Power1.easeOut
    }, 0.05);
    TweenMax.to($menuItemsWrap, 0.6, {
      width: 0,
      height: 0,
      ease: Power1.easeIn,
      delay: 1
    });
  });
});

body {
  margin: 0;
  padding: 0;
}

.bubble-menu {
  position: relative;
  width: 600px;
  height: 600px;
  background: grey;
}

.menu.menu-style1 {
  z-index: 4;
}

.menu.menu-style1,
.menu-dummy.menu-style1 {
  color: #fff;
  position: relative;
  width: 150px;
  height: 150px;
  position: absolute;
  top: 50%;
  left: 0;
  transform: translate(-50%, -50%);
}

.menu-wrap {
  background-color: black;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50%;
  position: relative;
  z-index: 3;
  cursor: pointer;
}

.menu-wrap h3 {
  font-size: 20px;
  font-family: sans-serif;
  user-select: none;
  transform: rotate(-90deg) translateY(25px);
}

.menu-wrap i {
  font-size: 25px;
  line-height: 25px;
}

a {
  color: black;
}

.sub-menu {
  position: absolute;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  top: 50%;
  left: 0;
  width: 0;
  height: 0;
  background: red;
  display: flex;
  flex-direction: column;
  transform: translate(-50%, -50%);
  z-index: 3;
}

.sub-menu ul {
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  width: 100%;
  height: 100%;
  text-align: center;
  list-style: none;
  padding: 0;
  border-radius: 50%;
}

.sub-menu li {
  transform: translate(-80px);
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://use.fontawesome.com/a2e210f715.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/2.1.3/TweenMax.min.js"></script>

<div class="bubble-menu">
  <div class="menu menu-style1">
    <div class="menu-wrap">
      <h3>Products</h3>
      <i class="fa fa-angle-right" aria-hidden="true"></i>
    </div>
  </div>
  <div class="menu-dummy menu-style1">
    <div class="menu-wrap">
      <h3>Products</h3>
      <i class="fa fa-angle-right" aria-hidden="true"></i>
    </div>
  </div>

  <div class="sub-menu">
    <ul>
      <li><a href="#">menu1 very big</a></li>
      <li><a href="#">menu2</a></li>
      <li><a href="#">menu3</a></li>
    </ul>
    <ul>
      <li><a href="#">menu4 big</a></li>
      <li><a href="#">menu5</a></li>
      <li><a href="#">menu6</a></li>
    </ul>
  </div>


</div>

这是代码笔 Link

Answer 1

您正在做一件好事和新事，干得好! :)

这是我用你的代码试过的，我试图通过js实现这个要求。请查看此处提供的代码笔链接。希望它会帮助你。当你点击时，动画中仍然有一些跳跃的感觉，但你可以稍后玩它来解决这个问题。我只想向您展示其背后的逻辑。

jQuery(document).ready(function ($) {
  var $mainmenu = $('.menu');
  var $menuItemsWrap = $(".sub-menu");
  var $MenuItems = $(".sub-menu li");

  $('.menu').click(function () {
    $('.menu-dummy').css({"display": "block", "z-index": "5"});
    $('.menu').css({"display": "none"});
    TweenMax.to($menuItemsWrap, 0.6, {width: 400,height: 400,ease: Power1.easeIn });
    var xpositionforfirst = 80;
    $(".sub-menu ul.first li").each(function(i) {
        var item = $(this);
        console.log(item);
        TweenMax.staggerTo(item, 0.5, { x: xpositionforfirst, opacity: 1, ease: Power1.easeOut, delay: 0.6 }, 0.1);
      xpositionforfirst = xpositionforfirst + 30;
    });
    var xpositionforsecond = 140;
    $(".sub-menu ul.second li").each(function(i) {
        var item = $(this);
        console.log(item);
        TweenMax.staggerTo(item, 0.5, { x: xpositionforsecond, opacity: 1, ease: Power1.easeOut, delay: 0.6 }, 0.1);
      xpositionforsecond = xpositionforsecond - 30;
    });   
  });
  $('.menu-dummy').click(function () {
    $('.menu-dummy').css({"display": "none",});
     $('.menu').css({"display": "block"});
    TweenMax.staggerTo($MenuItems, 0.5, { x: -80, autoAlpha: 1, ease: Power1.easeOut }, 0.05);
    TweenMax.to($menuItemsWrap, 0.6, {width: 0,height: 0,ease: Power1.easeIn, delay: 1 });
  });
});

https://codepen.io/pgurav/pen/yLLxqvz