CSS波动画文本

时间:2017-01-02 11:32:27

标签: css css3 svg css-shapes

如何运作

下面显示的.png图片将剪切为带动画的文字;

wave with text

在行动



body { background: #000000; }

.Wave-Loader {
	text-transform: uppercase;
	font-family: 'Cabin Condensed', sans-serif;
	font-weight: bold;
	font-size: 100pt;
	text-align: center;
	height: 120px;
	line-height: 110px;
	vertical-align: bottom;
	position: absolute;
	left: 0;
	right: 0;
	top: 100px;
	bottom: 0;
}

.Wave-Loader.Wave {
	background-image: url("http://i.imgur.com/uFpLbYt.png");
	-moz-background-clip: text;
	-o-background-clip: text;
	  -webkit-background-clip: text;
		background-clip: text;
	color: transparent;
	text-shadow: 0px 0px rgba(255, 255, 255, 0.06);
	animation: Wave-Loader 1s infinite linear;
	background-size: 200px 100px;
	background-repeat: repeat-x;
	opacity: 1;
}
@keyframes Wave-Loader {
	0% { background-position: 0 bottom; }
	100% { background-position: 200px bottom; }
}

<div class="Wave-Loader Wave">loading</div>
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问题

我不能使用图像,而是如何替换纯CSS形状,因为我想实现我的颜色补间,这将改变我在上面的演示中看到的白色波浪的颜色从红色变为绿色。

注意:黑色背景仅用于StackOverflow,而我的背景颜色可能不同。

波效应的例子

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#wave {
  position: relative;
  height: 70px;
  width: 600px;
  background: #000000;
}
#wave:before {
  content: "";
  display: block;
  position: absolute;
  border-radius: 100% 50%;
  width: 340px;
  height: 80px;
  background-color: white;
  right: -5px;
  top: 40px;
}
#wave:after {
  content: "";
  display: block;
  position: absolute;
  border-radius: 100% 50%;
  width: 300px;
  height: 70px;
  background-color: #000000;
  left: 0;
  top: 27px;
}
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<div id="wave"></div>
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svg {
  display: inline-block;
  position: absolute;
  top: 0;
  left: 0;
}
.container {
  display: inline-block;
  position: relative;
  width: 100%;
  padding-bottom: 100%;
  vertical-align: middle;
  overflow: hidden;
}
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<div class="container">
  <svg viewBox="0 0 500 500" preserveAspectRatio="xMinYMin meet">
    <path d="M0,100 C150,200 350,0 500,100 L500,00 L0,0 Z" style="stroke: none; fill:red;"></path>
  </svg>
</div>
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1 个答案:

答案 0 :(得分:15)

您可以通过多种技巧获得由动画波浪填充的文字。这是使用模式元素的SVG方法。文本中填充了波形图案,并使用SMIL动画对图案进行动画处理。这是它的样子:

Animated wave clipped by text

此方法允许您使用非普通背景(如渐变)填充图案,并在图像或任何非普通背景上显示文本。

您可以在此处看到此操作: Animated wave clipped with text

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body,html{margin:0;padding:0;height:100%;}
body{
  background:url('https://farm9.staticflickr.com/8760/17195790401_ceeeafcddb_o.jpg');
  background-size:cover;
  font-family: 'Cabin Condensed', sans-serif;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
}
svg{font-weight:bold;max-width:600px;height:auto;}
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<svg viewbox="0 0 100 20">
  <defs>
    <linearGradient id="gradient" x1="0" x2="0" y1="0" y2="1">
      <stop offset="5%" stop-color="#326384"/>
      <stop offset="95%" stop-color="#123752"/>
    </linearGradient>
    <pattern id="wave" x="0" y="0" width="120" height="20" patternUnits="userSpaceOnUse">
      <path id="wavePath" d="M-40 9 Q-30 7 -20 9 T0 9 T20 9 T40 9 T60 9 T80 9 T100 9 T120 9 V20 H-40z" fill="url(#gradient)"> 
        <animateTransform attributeName="transform" type="translate" begin="0s" dur="1.5s" from="0,0" to="40,0" repeatCount="indefinite" />
      </path>
    </pattern>
  </defs>
  <text text-anchor="middle" x="50" y="15" font-size="17" fill="url(#wave)"  fill-opacity="0.6">LOADING</text>
  <text text-anchor="middle" x="50" y="15" font-size="17" fill="url(#gradient)" fill-opacity="0.1">LOADING</text>
</svg>
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编辑----

我为此示例从CSS关键帧动画切换到SMIL动画,因为Firefox还不支持<defs>标记中定义的元素上的CSS关键帧(请参阅https://bugzilla.mozilla.org/show_bug.cgi?id=1118710)。