RError.com

RError.com Logo RError.com Logo

RError.com Navigation

  • 主页

Mobile menu

Close
  • 主页
  • 系统&网络
    • 热门问题
    • 最新问题
    • 标签
  • Ubuntu
    • 热门问题
    • 最新问题
    • 标签
  • 帮助
主页 / 问题 / 983152
Accepted
MoloF
MoloF
Asked:2020-05-19 21:13:09 +0000 UTC2020-05-19 21:13:09 +0000 UTC 2020-05-19 21:13:09 +0000 UTC

CSS | 在 mousemove 上变换平移 (X, Y) 效果

  • 772

有一个效果,在悬停时,以这样的方式为圆设置动画,使得 X 和 Y 中的旋转值发生变化,但是如何实现效果以便它在平移下工作。

var box = $(".scene");
box.on('mousemove', function (e) {
    var x = e.clientX - $(this).offset().left + $(window).scrollLeft();
    var y = e.clientY - $(this).offset().top + $(window).scrollTop();

    var rY = map(x, 0, $(this).width(), -30, 30);
    var rX = map(y, 0, $(this).height(), -30, 30);

    $('#x').html(x);
    $('#y').html(y);

    $(this).children(".box").css("transform", "rotateY(" + rY + "deg)" + " " + "rotateX(" + -rX + "deg)");
});

box.on('mouseenter', function () {
    $(this).children(".box").addClass('transition-fast');
});

box.on('mouseleave', function () {
    $(this).children(".box").removeClass('transition-fast');

    $(this).children(".box").css("transform", "rotateY(" + 0 + "deg)" + " " + "rotateX(" + 0 + "deg)");
});

function map(x, in_min, in_max, out_min, out_max)
{
    return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}
*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body{
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  font-family: monospace;
  font-size: 14px;
}

.stats{
  margin-left: 50px;
  font-size: 20px;
  width: 200px;
}

.scene {
  width: 300px;
  height: 300px;
  perspective: 600px;
  cursor: pointer;
  border: 5px solid #000;
  padding: 50px;
  border-radius: 50%;
}

.box {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transform-origin: center;
  transition: transform 0.5s ease;
  background: #000;
  border-radius: 50%;
}
.box.transition-fast {
  transition: transform 0.05s linear;
}

.side {
  position: absolute;
  width: 100%;
  height: 100%;
  color: white;
  backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.side h2 {
  transform: translateZ(30px);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="scene">
  <div class="box">
    <div class="side front-side">
      <h2>Something text</h2>
    </div>
  </div>
</div>
<div class="stats">
  <p>
    X: 
    <span id="x"></span>
  </p>
  <p>
    Y: 
    <span id="y"></span>
  </p>
</div>

实际上,这里是动画(我不知道如何正确调用它),但它必须不旋转,而是朝正确的方向移动但不超出边界。

这是所需的输出:

javascript
  • 1 1 个回答
  • 10 Views

1 个回答

  • Voted
  1. Best Answer
    ThisMan
    2020-05-19T22:05:05Z2020-05-19T22:05:05Z

    const $eventContainer = $("body");
    const $box = $('.box');
    const $scene = $('.scene');
    // Так как есть паддинг, берем именно значение offsetWidth
    const sceneRadius = $scene.get(0).offsetWidth / 2;
    const boxRadius = $box.width() / 2; // тут паддинга нет
    // Считаем максимально возможно смещение
    // Так как круг не должен выходить за сцену
    // Смещение должно быть не больше чем радиус сцены минус радиус круга
    const maxTranslate = sceneRadius - boxRadius;
    
    $eventContainer.on('mousemove', e => {
      const center = {
        x: $scene.offset().left + $scene.get(0).offsetWidth / 2,
        y: $scene.offset().top + $scene.get(0).offsetHeight / 2
      };
      const mouseCoords = {
        x: e.pageX - center.x,
        y: e.pageY - center.y,
      };
      
      const translateDistance = Math.sqrt(
          mouseCoords.x * mouseCoords.x + mouseCoords.y * mouseCoords.y)
      
      let translate;
      if (translateDistance <= maxTranslate) {
        translate = `translate(${mouseCoords.x}px, ${mouseCoords.y}px)`;
      } else {
        // Нормализуем вектор смещения
        const normalizeCoords = {
          x: mouseCoords.x / translateDistance,
          y: mouseCoords.y / translateDistance,
        };
        
        const finalCoords = {
          x: normalizeCoords.x * maxTranslate,
          y: normalizeCoords.y * maxTranslate,
        };
        
        translate = `translate(${finalCoords.x}px, ${finalCoords.y}px)`;
      }
    
      $box.css('transform', translate);
    });
    *{
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body{
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 100vh;
      font-family: monospace;
      font-size: 14px;
    }
    
    .scene {
      width: 300px;
      height: 300px;
      cursor: pointer;
      border: 5px solid #000;
      padding: 50px;
      border-radius: 50%;
    }
    
    .box {
      position: relative;
      width: 100%;
      height: 100%;
      transform-origin: center;
      background: #000;
      border-radius: 50%;
    }
    
    .side {
      position: absolute;
      width: 100%;
      height: 100%;
      color: white;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    
    .side h2 {
      transform: translateZ(30px);
    }
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <div class="scene">
      <div class="box">
        <div class="side front-side">
          <h2>Something text</h2>
        </div>
      </div>
    </div>

    • 2

相关问题

Sidebar

Stats

  • 问题 10021
  • Answers 30001
  • 最佳答案 8000
  • 用户 6900
  • 常问
  • 回答
  • Marko Smith

    根据浏览器窗口的大小调整背景图案的大小

    • 2 个回答
  • Marko Smith

    理解for循环的执行逻辑

    • 1 个回答
  • Marko Smith

    复制动态数组时出错(C++)

    • 1 个回答
  • Marko Smith

    Or and If,elif,else 构造[重复]

    • 1 个回答
  • Marko Smith

    如何构建支持 x64 的 APK

    • 1 个回答
  • Marko Smith

    如何使按钮的输入宽度?

    • 2 个回答
  • Marko Smith

    如何显示对象变量的名称?

    • 3 个回答
  • Marko Smith

    如何循环一个函数?

    • 1 个回答
  • Marko Smith

    LOWORD 宏有什么作用?

    • 2 个回答
  • Marko Smith

    从字符串的开头删除直到并包括一个字符

    • 2 个回答
  • Martin Hope
    Alexandr_TT 2020年新年大赛! 2020-12-20 18:20:21 +0000 UTC
  • Martin Hope
    Alexandr_TT 圣诞树动画 2020-12-23 00:38:08 +0000 UTC
  • Martin Hope
    Air 究竟是什么标识了网站访问者? 2020-11-03 15:49:20 +0000 UTC
  • Martin Hope
    Qwertiy 号码显示 9223372036854775807 2020-07-11 18:16:49 +0000 UTC
  • Martin Hope
    user216109 如何为黑客设下陷阱,或充分击退攻击? 2020-05-10 02:22:52 +0000 UTC
  • Martin Hope
    Qwertiy 并变成3个无穷大 2020-11-06 07:15:57 +0000 UTC
  • Martin Hope
    koks_rs 什么是样板代码? 2020-10-27 15:43:19 +0000 UTC
  • Martin Hope
    Sirop4ik 向 git 提交发布的正确方法是什么? 2020-10-05 00:02:00 +0000 UTC
  • Martin Hope
    faoxis 为什么在这么多示例中函数都称为 foo? 2020-08-15 04:42:49 +0000 UTC
  • Martin Hope
    Pavel Mayorov 如何从事件或回调函数中返回值?或者至少等他们完成。 2020-08-11 16:49:28 +0000 UTC

热门标签

javascript python java php c# c++ html android jquery mysql

Explore

  • 主页
  • 问题
    • 热门问题
    • 最新问题
  • 标签
  • 帮助

Footer

RError.com

关于我们

  • 关于我们
  • 联系我们

Legal Stuff

  • Privacy Policy

帮助

© 2023 RError.com All Rights Reserve   沪ICP备12040472号-5