Gooey Scroll Arrow

gooey-scroll-arrow.markdown

Gooey Scroll Arrow

Simple experiment on using an svg gooey filter

A Pen by Simone Viani on CodePen.

License.

index.html

<div class="ico animated">
  
  <div class="circle circle-top"></div>  
  <div class="circle circle-main"></div>
  <div class="circle circle-bottom"></div>  
  
  <svg class="svg" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 612 612" style="enable-background:new 0 0 612 612;" xml:space="preserve" >
  <defs>
    <clipPath id="cut-off-arrow">
      <circle cx="306" cy="306" r="287"/>
    </clipPath>
    
    <filter id="goo">
      <feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur" />
      <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -7" result="goo" />
      <feBlend in="SourceGraphic" in2="goo" />
    </filter>
   
  </defs>
    <path  class="st-arrow" d="M317.5,487.6c0.3-0.3,0.4-0.7,0.7-1.1l112.6-112.6c6.3-6.3,6.3-16.5,0-22.7c-6.3-6.3-16.5-6.3-22.7,0
					l-86,86V136.1c0-8.9-7.3-16.2-16.2-16.2c-8.9,0-16.2,7.3-16.2,16.2v301.1l-86-86c-6.3-6.3-16.5-6.3-22.7,0
					c-6.3,6.3-6.3,16.5,0,22.7l112.7,112.7c0.3,0.3,0.4,0.7,0.7,1c0.5,0.5,1.2,0.5,1.7,0.9c1.7,1.4,3.6,2.3,5.6,2.9
					c0.8,0.2,1.5,0.4,2.3,0.4C308.8,492.6,313.8,491.3,317.5,487.6z"/>
</svg>
</div>

style.scss

$circle-w: 100px;
$circle-bg: #fff;
$arrow-bg:#55544F;
$body-bg: #9DDCDC;
$bezier: cubic-bezier(0.770, 0.000, 0.175, 1.000);
$bezier-bounce: cubic-bezier(.87,-.41,.19,1.44);
$anim-timing: 3s;

html,
body {
  height: 100%;
  width: 100%;
  text-align: center;
}
body {background-color: $body-bg;}

.ico {
  margin: 0 auto;
  text-align: center;
  width: $circle-w;
  height: $circle-w;
  position: relative;
  top: 50%;
  transform: translateY(-50%);
  filter: url("#goo");
  .circle {
    background: $circle-bg;
    border-radius: 50%;
    display: inline-block;
    height: $circle-w;
    width: $circle-w;
    
    position: absolute;
    top: 50%;
    left:50%;
    transform: translateX(-50%) translateY(-50%);
    transform-origin: 0%;
    
    &.circle-top {
      height: $circle-w / 3;
      width: $circle-w / 2.4;
      animation: blob-1-anim $anim-timing $bezier infinite;
      z-index: 0;
      top:0;
    }
    &.circle-bottom {
      height: $circle-w / 3;
      width: $circle-w / 2.4;
      animation: blob-2-anim $anim-timing $bezier  infinite;
      z-index: 9;
      bottom:0px;
    }
    
  }
  
  
  .st-arrow{
    fill:$arrow-bg;
    animation: scrolly $anim-timing $bezier forwards infinite;
    perspective: 9000px;
    transform: translateZ(0);
    transform-origin: bottom;
  }
}

.svg {z-index:9;position:relative;}
  
@keyframes blob-1-anim {
  0%{
    transform:translateX(-50%) translateY(0);
  }
  14%{
    transform:translateX(-50%) translateY(-8px);
  }
  24% {
    transform:translateX(-50%) translateY(0);
  }
  100% {
    transform:translateX(-50%) translateY(0);
  }
}

@keyframes blob-2-anim {
  0% {
    //transform: scale(1) translate(-50%,-150%);
    transform: scale(1) translate(-50%,10px);
  }
  30% {
    //transform: scale(1) translate(-50%,-50%);
    transform: scale(1) translate(-50%,10px);
  }
  70% {
    //transform: scale(1) translate(-50%,-50%);
    transform: scale(1) translate(-50%,10px);
    
  }
  95% {
    //transform: scale(1) translate(-50%,-50%);
    transform: scale(1) translate(-50%,26px);
    
    
  }
  100% {
    //transform: scaleX(1.5) translate(-50%,140%);
    transform: scale(1) translate(-50%,10px);
  }
}

@keyframes scrolly {
  0% {
    transform: translate3d(0,-150%,0) rotateX(90deg) scale(0.5) skewX(3deg);
  }
  30% {
    transform: translate3d(0,0,0) rotateX(0deg) scale(1) skewX(0deg);
  }
  70% {
    transform: translate3d(0,0,0) rotateX(0deg) scale(1) skewX(0deg);
  }
  95% {
    transform: translate3d(0,50%,0) rotateX(-90deg) scale(0.5) skewX(-3deg);
  }
  100% {
    transform: translate3d(0,50%,0) rotateX(-90deg) scale(0.5) skewX(-3deg);
  }
}

Have you gotten any feedback about the filter performance on Firefox? The animation looks good on Chrome, but is filling an odd hue on Firefox for me.