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css中的svg圆发光效果?

svg d3.js css
  •  0
  • Acy  · 技术社区  · 7 年前

    我正在学习SVG,我想知道是否有可能用SVG创建这种辉光效果,如下面的例子所示-悬停触发效果- https://codepen.io/FelixRilling/pen/qzfoc

    事实上,我想知道如何使光来来去去去,svg的优势是更精确的效果和更好的形状跟随,这种优势。使用svg可以做到这一点吗?

    接下来,使用html css的代码

    HTML: 

    <div id="container">

    <p><a href="https://en.wikipedia.org/wiki/Red">
        RED
    </a></p>

    <p><a href="https://en.wikipedia.org/wiki/Blue">
        BLUE
    </a></p>

    <p><a href="https://en.wikipedia.org/wiki/Yellow">
        Yellow
    </a></p>

    <p><a href="https://en.wikipedia.org/wiki/Green">
        GREEN
    </a></p>

    <p><a href="https://en.wikipedia.org/wiki/Orange_(colour)">
        ORANGE
    </a></p>

    <p><a href="https://en.wikipedia.org/wiki/Violet_(color)">
        VIOLET
    </a></p>

</div>

<div id="linkBack" style="position:absolute;right:0px;top:0px;background-color:#333;margin:0;width:60px;padding:5px"><a href="http://www.f-rilling.com/projects/" target="_blank" style="font-size:14px;text-decoration:none;color:#fff;padding:0 0 0 5px;font-family:sans-serif">My Site</a></div>

    CSS: 

    body {
  background-color: #222222;
  background: repeating-linear-gradient(45deg, #2b2b2b 0%, #2b2b2b 10%, #222222 0%, #222222 50%) 0 / 15px 15px;
}

#container {
  width: 500px;
  margin: auto;
}

/*Neon*/
p {
  text-align: center;
  font-size: 7em;
  margin: 20px 0 20px 0;
}

a {
  text-decoration: none;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  transition: all 0.5s;
}

p:nth-child(1) a {
  color: #fff;
  font-family: Monoton;
  -webkit-animation: neon1 1.5s ease-in-out infinite alternate;
  -moz-animation: neon1 1.5s ease-in-out infinite alternate;
  animation: neon1 1.5s ease-in-out infinite alternate;
}

p:nth-child(1) a:hover {
  color: #FF1177;
  -webkit-animation: none;
  -moz-animation: none;
  animation: none;
}

p:nth-child(2) a {
  font-size: 1.5em;
  color: #228DFF;
  font-family: Iceland;
}

p:nth-child(2) a:hover {
  -webkit-animation: neon2 1.5s ease-in-out infinite alternate;
  -moz-animation: neon2 1.5s ease-in-out infinite alternate;
  animation: neon2 1.5s ease-in-out infinite alternate;
}

p:nth-child(3) a {
  color: #FFDD1B;
  font-family: Pacifico;
}

p:nth-child(3) a:hover {
  -webkit-animation: neon3 1.5s ease-in-out infinite alternate;
  -moz-animation: neon3 1.5s ease-in-out infinite alternate;
  animation: neon3 1.5s ease-in-out infinite alternate;
}

p:nth-child(4) a {
  color: #B6FF00;
  font-family: "Press Start 2P";
  font-size: 0.8em;
}

p:nth-child(4) a:hover {
  -webkit-animation: neon4 1.5s ease-in-out infinite alternate;
  -moz-animation: neon4 1.5s ease-in-out infinite alternate;
  animation: neon4 1.5s ease-in-out infinite alternate;
}

p:nth-child(5) a {
  color: #FF9900;
  font-family: Audiowide;
}

p:nth-child(5) a:hover {
  -webkit-animation: neon5 1.5s ease-in-out infinite alternate;
  -moz-animation: neon5 1.5s ease-in-out infinite alternate;
  animation: neon5 1.5s ease-in-out infinite alternate;
}

p:nth-child(6) a {
  color: #BA01FF;
  font-family: Vampiro One;
}

p:nth-child(6) a:hover {
  -webkit-animation: neon6 1.5s ease-in-out infinite alternate;
  -moz-animation: neon6 1.5s ease-in-out infinite alternate;
  animation: neon6 1.5s ease-in-out infinite alternate;
}

p a:hover {
  color: #ffffff;
}
/*glow for webkit*/

@-webkit-keyframes neon1 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF1177, 0 0 70px #FF1177, 0 0 80px #FF1177, 0 0 100px #FF1177, 0 0 150px #FF1177;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF1177, 0 0 35px #FF1177, 0 0 40px #FF1177, 0 0 50px #FF1177, 0 0 75px #FF1177;
  }
}

@-webkit-keyframes neon2 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #228DFF, 0 0 70px #228DFF, 0 0 80px #228DFF, 0 0 100px #228DFF, 0 0 150px #228DFF;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #228DFF, 0 0 35px #228DFF, 0 0 40px #228DFF, 0 0 50px #228DFF, 0 0 75px #228DFF;
  }
}

@-webkit-keyframes neon3 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FFDD1B, 0 0 70px #FFDD1B, 0 0 80px #FFDD1B, 0 0 100px #FFDD1B, 0 0 150px #FFDD1B;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FFDD1B, 0 0 35px #FFDD1B, 0 0 40px #FFDD1B, 0 0 50px #FFDD1B, 0 0 75px #FFDD1B;
  }
}

@-webkit-keyframes neon4 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #B6FF00, 0 0 70px #B6FF00, 0 0 80px #B6FF00, 0 0 100px #B6FF00, 0 0 150px #B6FF00;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #B6FF00, 0 0 35px #B6FF00, 0 0 40px #B6FF00, 0 0 50px #B6FF00, 0 0 75px #B6FF00;
  }
}

@-webkit-keyframes neon5 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF9900, 0 0 70px #FF9900, 0 0 80px #FF9900, 0 0 100px #FF9900, 0 0 150px #FF9900;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF9900, 0 0 35px #FF9900, 0 0 40px #FF9900, 0 0 50px #FF9900, 0 0 75px #FF9900;
  }
}

@-webkit-keyframes neon6 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #ff00de, 0 0 70px #ff00de, 0 0 80px #ff00de, 0 0 100px #ff00de, 0 0 150px #ff00de;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #ff00de, 0 0 35px #ff00de, 0 0 40px #ff00de, 0 0 50px #ff00de, 0 0 75px #ff00de;
  }
}
/*glow for mozilla*/

@-moz-keyframes neon1 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF1177, 0 0 70px #FF1177, 0 0 80px #FF1177, 0 0 100px #FF1177, 0 0 150px #FF1177;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF1177, 0 0 35px #FF1177, 0 0 40px #FF1177, 0 0 50px #FF1177, 0 0 75px #FF1177;
  }
}

@-moz-keyframes neon2 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #228DFF, 0 0 70px #228DFF, 0 0 80px #228DFF, 0 0 100px #228DFF, 0 0 150px #228DFF;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #228DFF, 0 0 35px #228DFF, 0 0 40px #228DFF, 0 0 50px #228DFF, 0 0 75px #228DFF;
  }
}

@-moz-keyframes neon3 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FFDD1B, 0 0 70px #FFDD1B, 0 0 80px #FFDD1B, 0 0 100px #FFDD1B, 0 0 150px #FFDD1B;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FFDD1B, 0 0 35px #FFDD1B, 0 0 40px #FFDD1B, 0 0 50px #FFDD1B, 0 0 75px #FFDD1B;
  }
}

@-moz-keyframes neon4 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #B6FF00, 0 0 70px #B6FF00, 0 0 80px #B6FF00, 0 0 100px #B6FF00, 0 0 150px #B6FF00;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #B6FF00, 0 0 35px #B6FF00, 0 0 40px #B6FF00, 0 0 50px #B6FF00, 0 0 75px #B6FF00;
  }
}

@-moz-keyframes neon5 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF9900, 0 0 70px #FF9900, 0 0 80px #FF9900, 0 0 100px #FF9900, 0 0 150px #FF9900;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF9900, 0 0 35px #FF9900, 0 0 40px #FF9900, 0 0 50px #FF9900, 0 0 75px #FF9900;
  }
}

@-moz-keyframes neon6 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #ff00de, 0 0 70px #ff00de, 0 0 80px #ff00de, 0 0 100px #ff00de, 0 0 150px #ff00de;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #ff00de, 0 0 35px #ff00de, 0 0 40px #ff00de, 0 0 50px #ff00de, 0 0 75px #ff00de;
  }
}
/*glow*/

@keyframes neon1 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF1177, 0 0 70px #FF1177, 0 0 80px #FF1177, 0 0 100px #FF1177, 0 0 150px #FF1177;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF1177, 0 0 35px #FF1177, 0 0 40px #FF1177, 0 0 50px #FF1177, 0 0 75px #FF1177;
  }
}

@keyframes neon2 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #228DFF, 0 0 70px #228DFF, 0 0 80px #228DFF, 0 0 100px #228DFF, 0 0 150px #228DFF;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #228DFF, 0 0 35px #228DFF, 0 0 40px #228DFF, 0 0 50px #228DFF, 0 0 75px #228DFF;
  }
}

@keyframes neon3 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FFDD1B, 0 0 70px #FFDD1B, 0 0 80px #FFDD1B, 0 0 100px #FFDD1B, 0 0 150px #FFDD1B;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FFDD1B, 0 0 35px #FFDD1B, 0 0 40px #FFDD1B, 0 0 50px #FFDD1B, 0 0 75px #FFDD1B;
  }
}

@keyframes neon4 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #B6FF00, 0 0 70px #B6FF00, 0 0 80px #B6FF00, 0 0 100px #B6FF00, 0 0 150px #B6FF00;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #B6FF00, 0 0 35px #B6FF00, 0 0 40px #B6FF00, 0 0 50px #B6FF00, 0 0 75px #B6FF00;
  }
}

@keyframes neon5 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF9900, 0 0 70px #FF9900, 0 0 80px #FF9900, 0 0 100px #FF9900, 0 0 150px #FF9900;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF9900, 0 0 35px #FF9900, 0 0 40px #FF9900, 0 0 50px #FF9900, 0 0 75px #FF9900;
  }
}

@keyframes neon6 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #ff00de, 0 0 70px #ff00de, 0 0 80px #ff00de, 0 0 100px #ff00de, 0 0 150px #ff00de;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #ff00de, 0 0 35px #ff00de, 0 0 40px #ff00de, 0 0 50px #ff00de, 0 0 75px #ff00de;
  }
}
/*REEEEEEEEEEESPONSIVE*/

@media (max-width: 650px) {
  #container {
    width: 100%;
  }
  p {
    font-size: 3.5em;
  }
}
    0 回复  |  直到 7 年前
        1
  •  4
  •   Paul LeBeau    7 年前

    是的,这是可能的。

    基本思想是使用滤镜模糊形状,将模糊的形状涂上霓虹灯的颜色,然后将其放在原始文本后面。

    然而,要获得最好的霓虹灯辉光,你需要修补颜色和辉光强度。在下面的例子中,我使用了一系列不同数量的模糊叠加在一起以获得更好的效果。这与您链接到的代码笔类似。但也会有其他的方法。

    请注意,为简单起见,此处使用的特定筛选器定义要求原始形状(文本)为白色。它可能不适合其他颜色。但是可以调整过滤器来解决这个问题。 

    svg {
  background-color: black;
  width: 400px;
}

text {
  font-family: Helvetica, Arial, sansserif;
  font-size: 100px;
  font-weight: 900;
  fill: white;
  filter: url(#red-glow);
}
    <svg viewBox="0 0 400 400">
  <defs>
    <filter id="red-glow" filterUnits="userSpaceOnUse"
            x="-50%" y="-50%" width="200%" height="200%">
       <!-- blur the text at different levels-->
      <feGaussianBlur in="SourceGraphic" stdDeviation="5" result="blur5"/>
      <feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur10"/>
      <feGaussianBlur in="SourceGraphic" stdDeviation="20" result="blur20"/>
      <feGaussianBlur in="SourceGraphic" stdDeviation="30" result="blur30"/>
      <feGaussianBlur in="SourceGraphic" stdDeviation="50" result="blur50"/>
      <!-- merge all the blurs except for the first one -->
      <feMerge result="blur-merged">
        <feMergeNode in="blur10"/>
        <feMergeNode in="blur20"/>
        <feMergeNode in="blur30"/>
        <feMergeNode in="blur50"/>
      </feMerge>
      <!-- recolour the merged blurs red-->
      <feColorMatrix result="red-blur" in="blur-merged" type="matrix"
                     values="1 0 0 0 0
                             0 0.06 0 0 0
                             0 0 0.44 0 0
                             0 0 0 1 0" />
      <feMerge>
        <feMergeNode in="red-blur"/>       <!-- largest blurs coloured red -->
        <feMergeNode in="blur5"/>          <!-- smallest blur left white -->
        <feMergeNode in="SourceGraphic"/>  <!-- original white text -->
      </feMerge>
    </filter>
  </defs>

  <text x="200" y="200" text-anchor="middle">RED</text>
</svg>
        2
  •  3
  •   ccprog    7 年前

    下面是一个基本设置: 

    <svg width="100%" height="300">
  <filter id="neon">
    <feFlood flood-color="rgb(255,255,128)" flood-opacity="0.5" in="SourceGraphic" />
    <feComposite operator="in" in2="SourceGraphic" />
    <feGaussianBlur stdDeviation="10" />
    <feComponentTransfer result="glow1">
      <feFuncA type="linear" slope="4" intercept="0" />
    </feComponentTransfer>
    <feMerge>
       <feMergeNode in="glow1" />
       <feMergeNode in="SourceGraphic" />
    </feMerge>
  </filter>
  <rect width="100%" height="100%" fill="black" />
  <text text-anchor="middle" font-size="100" font-family="sans-serif" x="50%" y="200" fill="yellow" filter="url(#neon)">NEON</text>
</svg>
    • flood-color 是发光的颜色
    • stdDeviation 是近似大小,值越大表示强度越小
    • slope 增强光晕并抵消高斯模糊的稀释。 flood-opacity 相同,但上限为1
    • 如果你想在字母前面发光,请更改 <feMergeNode> S
    • 如果要像在笔中那样覆盖多个辉光层,请重复过滤器基本体,除了最后一个 <feMerge> 并按您希望的顺序添加结果 <FEGEGGE & GT;
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