css - 创建可以使用 html、css 填充颜色的自定义图形

Question

这个自定义图形需要填充三种不同的颜色。每种颜色都会填充 1-100%。因此蓝色将从腿部到头部填充(1-100%)，红色将从头底部填充到头顶(1-100%)，等等橙色。这可以使用 svg/canvas 或任何其他方式实现吗？

Answer 1

CSS动画方法

1. 用不同的 div 分割三个不同颜色的部分。根据优先级将其放置在 HTML 中，或者无论标记如何，都为其指定 z-index。
2. 分割颜色部分以创建支架和填充背景。虽然这可以使用 :before 和 :after 创建，但我使用了嵌套 div。
3. 创建从 0% 高度过渡到 100% 高度的填充关键帧动画。有关填充动画的更多信息可以在以下答案中找到:CSS Wipe up animation
4. 之前需要根据形状的数量计算animation-delay。如果第一个形状的动画持续时间为 2 秒，则为下一个形状设置 2 秒的动画延迟，以创建顺序效果。

操纵边框半径、位置、宽度和高度值以获得所需的形状和位置。

编辑:使用 Codepen 中的状态指示器进行更新

Codepen Demo

body {
  background: lightgray;
}

/* Red Filler */

.red-filler {
  background: lightgray;
  border-radius: 50%;
  width: 200px;
  height: 200px;
  border: 10px solid white;
  position: relative;
  overflow: hidden;
}
.red-liquid {
  width: 100%;
  position: absolute;
  bottom: 0;
  animation: fill-up 6s ease forwards;
  animation-timing-function: cubic-bezier(.2, .6, .8, .4);
  background: #E63B44;
}

/* Orange Filler */

.orange {
  z-index: -1;
  position: absolute;
}
.orange-filler-1 {
  background: lightgray;
  border-radius: 50%;
  width: 200px;
  height: 200px;
  border: 10px solid white;
  position: relative;
  top: -50px;
  overflow: hidden;
}
.orange-liquid-1 {
  width: 100%;
  position: absolute;
  bottom: 0;
  border-bottom-left-radius: 25%;
  border-bottom-right-radius: 25%;
  animation: fill-up 3s ease forwards;
  animation-timing-function: cubic-bezier(.2, .6, .8, .4);
  animation-delay: 3s;
  background: #EC952E;
  overflow: hidden;
}
.orange-filler-2 {
  background: lightgray none repeat scroll 0 0;
  border-bottom-left-radius: 40%;
  border-bottom-right-radius: 40%;
  border-color: white;
  border-image: none;
  border-style: none solid solid;
  border-width: 0 10px 10px;
  height: 100px;
  left: 50px;
  overflow: hidden;
  position: relative;
  top: -74px;
  width: 100px;
}
.orange-liquid-2 {
  animation: fill-up 3s ease forwards;
  animation-timing-function: cubic-bezier(.2, .6, .8, .4);
  background: #EC952E;
  position: absolute;
  bottom: 0;
  width: 100%;
}

/* Blue Filler */

.blue {
  z-index: -2;
  position: absolute;
  top: 40px;
}
.blue-filler-1 {
  background: lightgray none repeat scroll 0 0;
  border-radius: 50%;
  height: 250px;
  overflow: hidden;
  position: relative;
  width: 260px;
  left: -20px;
  top: -10px;
}
.blue-liquid-1 {
  width: 100%;
  position: absolute;
  bottom: 0;
  border-bottom-left-radius: 40%;
  border-bottom-right-radius: 40%;
  animation: fill-up 2s ease forwards;
  animation-timing-function: cubic-bezier(.2, .6, .8, .4);
  animation-delay: 4s;
  background: #566EB1;
  overflow: hidden;
}
.blue-filler-2 {
  background: lightgray none repeat scroll 0 0;
  border-radius: 50%;
  height: 275px;
  left: -25px;
  overflow: hidden;
  position: relative;
  top: -100px;
  width: 275px;
}
.blue-liquid-2 {
  animation: fill-up 2s ease forwards;
  animation-timing-function: cubic-bezier(.2, .6, .8, .4);
  background: #566EB1;
  position: absolute;
  bottom: 0;
  width: 100%;
  animation-delay: 2s;
}
.blue-filler-3 {
  background: lightgray none repeat scroll 0 0;
  border-bottom-left-radius: 50%;
  border-bottom-right-radius: 50%;
  height: 110px;
  left: 35px;
  overflow: hidden;
  position: relative;
  top: -125px;
  width: 150px;
}
.blue-liquid-3 {
  animation: fill-up 2s ease forwards;
  animation-timing-function: cubic-bezier(.2, .6, .8, .4);
  background: #566EB1;
  position: absolute;
  bottom: 0;
  width: 100%;
}
/* Container for centering */

.container {
  margin: 0 auto;
  width: 500px;
  margin-top: 50px;
}
/* Animation Keyframe */

@keyframes fill-up {
  0% {
    height: 0;
  }
  100% {
    height: 100%;
  }
}

<div class="container">
  
  <!-- Red container -->
  <div class="red">
    <div class="red-filler">
      <div class="red-liquid"></div>
    </div>
  </div>
  
  <!-- Orange container -->
  <div class="orange">
    <div class="orange-filler-1">
      <div class="orange-liquid-1"></div>
    </div>
    <div class="orange-filler-2">
      <div class="orange-liquid-2"></div>
    </div>
  </div>
  
  <!-- Blue container -->
  <div class="blue">
    <div class="blue-filler-1">
      <div class="blue-liquid-1"></div>
    </div>
    <div class="blue-filler-2">
      <div class="blue-liquid-2"></div>
    </div>
    <div class="blue-filler-3">
      <div class="blue-liquid-3"></div>
    </div>
  </div>
  
</div>