Clipping/Masking an Image Slider

HTML

              
                <div class="container">

<header class="banner">

    <div class="cd-slider-wrapper">
      <ul class="cd-slider">
        <li class="visible">
          <div class="cd-svg-wrapper">
            <svg viewBox="0 0 1600 400">
              <title>Aimated SVG</title>
              <defs>
              <clipPath id="clipPolygon1">
                <polygon points="1600,0 0,0 0,387 320,316 687,364 795,337 1068,400 1386,325 1600,385"/>
              </clipPath>
              </defs>

              <image width="1600" height="400" clip-path="url(#clipPolygon1)" xlink:href="//lh3.googleusercontent.com/-0sSwSFGL3qk/V3etpKymR6I/AAAAAAAADUM/6-A_6rzilbIPaBWg6jgKvrYMOt2GnyIzwCCo/s1600/header-img_1600x400.jpg"></image>
            </svg>
          </div> <!-- .cd-svg-wrapper -->
        </li>

        <li>
          <div class="cd-svg-wrapper">
            <svg viewBox="0 0 1600 400">
              <title>Aimated SVG</title>
              <defs>
              <clipPath id="clipPolygon2">
                <polygon points="1600,0 0,0 0,387 320,316 687,364 795,337 1068,400 1386,325 1600,385"/>
              </clipPath>
              </defs>

              <image width="1600" height="400" clip-path="url(#clipPolygon2)" xlink:href="//placehold.it/1600x400/b62043/ffffff"></image>
            </svg>
          </div> <!-- .cd-svg-wrapper -->
        </li>

        <li>
          <div class="cd-svg-wrapper">
            <svg viewBox="0 0 1600 400">
              <title>Aimated SVG</title>
              <defs>
              <clipPath id="clipPolygon3">
                <polygon points="1600,0 0,0 0,387 320,316 687,364 795,337 1068,400 1386,325 1600,385"/>
              </clipPath>
              </defs>

              <image width="1600" height="400" clip-path="url(#clipPolygon3)" xlink:href="//placehold.it/1600x400/288eb2/ffffff"></image>
            </svg>
          </div> <!-- .cd-svg-wrapper -->
        </li>

        <li>
          <div class="cd-svg-wrapper">
            <svg viewBox="0 0 1600 400">
              <title>Aimated SVG</title>
              <defs>
              <clipPath id="clipPolygon4">
                <polygon points="1600,0 0,0 0,387 320,316 687,364 795,337 1068,400 1386,325 1600,385"/>
              </clipPath>
              </defs>

              <image width="1600" height="400" clip-path="url(#clipPolygon4)" xlink:href="//placehold.it/1600x400/58ac39/ffffff"></image>
            </svg>
          </div> <!-- .cd-svg-wrapper -->
        </li>

      </ul> <!-- .cd-slider -->

      <ul class="cd-slider-navigation">
        <li><a href="#0" class="next-slide">Next</a></li>
        <li><a href="#0" class="prev-slide">Prev</a></li>
      </ul> <!-- .cd-slider-navigation -->

      <ol class="cd-slider-controls">
        <li class="selected"><a href="#0"><em>Item 1</em></a></li>
        <li><a href="#0"><em>Item 2</em></a></li>
        <li><a href="#0"><em>Item 3</em></a></li>
        <li><a href="#0"><em>Item 4</em></a></li>
      </ol> <!-- .cd-slider-controls -->
    </div> <!-- .cd-slider-wrapper -->

</header>

<main>

<article class="content">
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Officia veniam, eveniet quos, explicabo ab iste quibusdam aliquid molestias deserunt. Assumenda cum consectetur, dolorum dolore facere natus, nulla officiis rem deserunt!</p>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Officia veniam, eveniet quos, explicabo ab iste quibusdam aliquid molestias deserunt. Assumenda cum consectetur, dolorum dolore facere natus, nulla officiis rem deserunt!</p>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Officia veniam, eveniet quos, explicabo ab iste quibusdam aliquid molestias deserunt. Assumenda cum consectetur, dolorum dolore facere natus, nulla officiis rem deserunt!</p>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Officia veniam, eveniet quos, explicabo ab iste quibusdam aliquid molestias deserunt. Assumenda cum consectetur, dolorum dolore facere natus, nulla officiis rem deserunt!</p>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Officia veniam, eveniet quos, explicabo ab iste quibusdam aliquid molestias deserunt. Assumenda cum consectetur, dolorum dolore facere natus, nulla officiis rem deserunt!</p>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Officia veniam, eveniet quos, explicabo ab iste quibusdam aliquid molestias deserunt. Assumenda cum consectetur, dolorum dolore facere natus, nulla officiis rem deserunt!</p>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Officia veniam, eveniet quos, explicabo ab iste quibusdam aliquid molestias deserunt. Assumenda cum consectetur, dolorum dolore facere natus, nulla officiis rem deserunt!</p>
</article>

<aside class="sidebar">
  <ul>
    <li>list-item</li>
    <li>list-item</li>
    <li>list-item</li>
    <li>list-item</li>
    <li>list-item</li>
  </ul>

</aside>
</main>

<footer><small>by <a href="//atelierbramdehaan.nl/">Bram de Haan</a></small> &middot; <small><a href="//codepen.io/atelierbram/pen/WxOQjO/">on Codepen</a></small> &middot; <small>javascript for slider adapted from <a href="https://twitter.com/guerriero_se">Sebastiano Guerriero</a>’s <a href="https://codyhouse.co/gem/animated-svg-image-slider/">Animated SVG Image Slider on CodyHouse</a></small></footer>
</div>

CSS

              
                @import "bourbon";
// center vertically and/or horizontally an absolute positioned element

@mixin center($xy:xy) {
  @if $xy == xy {
    left: 50%;
    top: 50%;
    bottom: auto;
    right: auto;
    @include transform(translateX(-50%) translateY(-50%));
  }
  @else if $xy == x {
    left: 50%;
    right: auto;
    @include transform(translateX(-50%));
  }
  @else if $xy == y {
    top: 50%;
    bottom: auto;
    @include transform(translateY(-50%));
  }
}

$red: #d80032;

*,
*::after,
*::before {
  box-sizing: inherit;
  margin: 0;
  padding: 0;
  vertical-align: baseline;
}

html,
body {
 background-color: #000;
 min-height: 100%;
}

body {
 font: 100%/1.5 sans-serif;
 box-sizing: border-box;
}

.wf-active body {
  font-family: "Source Sans Pro", sans-serif;
}
.container {
  margin: 0 auto;
  max-width: 100em; // 1600px
  background-color: #1c1c1c;
  overflow: auto;

  @media (min-width:960px) {
    background-image: url("data:image/svg+xml;charset='utf8',%3Csvg xmlns='http://www.w3.org/2000/svg' width='960' height='10' viewBox='0 0 960 10'%3E%3Crect fill='rgb(255,255,255)' width='665' height='10'/%3E%3Crect fill='rgb(28,28,28)' width='275' height='10' x='665'/%3E%3Crect fill='rgb(255,255,255)' width='10' height='10' x='950'/%3E%3C/svg%3E");
    background-repeat: repeat-y;
    background-position: center top;
  }

  @media (min-width:1600px) {
    background-image: url("data:image/svg+xml;charset='utf8',%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1600 400'%3E%3Cpolygon fill='rgb(255,255,255)' points='687,364 320,316 320,400 985,400 985.003,380.847 795,337'/%3E%3C/svg%3E"),url("data:image/svg+xml;charset='utf8',%3Csvg xmlns='http://www.w3.org/2000/svg' width='1600' height='400' viewBox='0 0 1600 400'%3E%3Cpolygon fill='rgb(28,28,28)' points='1270,350 1068,380 985,380 985,400 1270,400'/%3E%3Cpolygon fill='rgb(255,255,255)' points='1270,342.35 1068,390 985,370.85 985,360.85 1068,380 1270,332.35'/%3E%3Cpolygon fill='rgb(216,0,50)' points='1270,352.35 1068,400 985,380.85 985,370.85 1068,390 1270,342.35'/%3E%3Cpolygon fill='rgb(255,255,255)' points='1280,329.984 1270,332.35 1270,400 1280,400'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center 5px, center 25px;
    background-size: contain;
  }
}

main {
  max-width: 60em; // 960px
  margin: 0 auto;
  border-right: 10px solid #fff;
  overflow: auto;
  padding-bottom: 2em;
}

.content {
  background-color: #fff;
  padding: 3em 2em;

  @media (min-width:960px) {
    float: left;
    width: 70%;  // 70 * 9.5 =  665px
  }
}

.sidebar {
  color: #fff;

  @media (min-width:960px) {
    float: right;
    width: 30%; //  30 * 9.5 = 285px
  }

}

ul[class*="cd-slider"] {
  list-style: none;
}

.sidebar ul {
  padding: 2em;
  margin-top: 2em;
  list-style: circle;
}

.sidebar ul li {
  font-size: 1em;
  margin-left: 1.5em;
}

.content p {
  padding: .5em 0;
  max-width: 40em;
}

img, svg, image {
  max-width: 100%;
}

footer {
  text-align: center;
  background-color: #000;
  color: silver;
  padding: .5em 1em;
  letter-spacing: 1px;
  word-spacing: -1px;
}

footer a {
  display: inline-block;
  color: #fff;
  padding: .5em 0 .25em;
  text-decoration: none;
  box-shadow: inset 0 -6px 0 transparent;
  transition: all .3s;
}

footer a:hover {
  box-shadow: inset 0 -6px 0 #4d4d4d;
}
/* --------------------------------

Slider

-------------------------------- */

.cd-slider-wrapper {
  position: relative;
  max-width: 1600px;

  /* hide horizontal scrollbar on IE11 */
  overflow-x: hidden;
}

.cd-slider > li {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  transition: opacity 1s;

  /* hide vertical scrollbar on IE11 */
  overflow: hidden;

  &.visible {
    position: relative;
    z-index: 2;
    opacity: 1;
  }

  &.is-animating {
    z-index: 3;
    opacity: 1;
  }
}

.cd-slider .cd-svg-wrapper {
  /* using padding Hack to fix bug on IE - svg height not properly calculated */
  height: 0;
  // padding-bottom: 57.15%;
  padding-bottom: 25%;
  position: relative;
  // top: -24px;
}

.cd-slider-wrapper svg {
  position: absolute;
  top:0;
  right:0;
  bottom:0;
  left:0;
  background-color: #fff;

  @media (min-width: 960px) {
    background-color: inherit;
  }
}


/* --------------------------------

Slider navigation

-------------------------------- */

.cd-slider-navigation li {
  position: absolute;
  z-index: 3;
  @include center(y);
  right: 10px;
  height: 48px;
  width: 48px;

  a {
    display: block;
    height: 100%;
    overflow: hidden;
    text-indent: 100%;
    white-space: nowrap;
    color: transparent;
    background: url(//atelierbram.bitbucket.io/cdn/img/svg/cd-icon-arrows.svg) no-repeat 0 0;
    // @include transition(transform .2s);
    transition: transform .2s;

    .no-touch &:hover {
      // @include transform(scale(1.1));
      transform: scale(1,1);
    }
  }

  &:last-of-type {
    left: 10px;
    right: auto;

    a {
      background-position: -48px 0;
    }
  }
}

/* --------------------------------

Slider dots/controls

-------------------------------- */

.cd-slider-controls {
  position: absolute;
  bottom: 25%;
  @include center(x);
  z-index: 3;
  @include clearfix;
  text-align: center;
  width: 90%;

  @media (min-width: 1600px) {
    bottom: 20px;
  }

  li {
    display: inline-block;
    margin-right: 10px;

    &:last-of-type {
      margin-right: 0;
    }

    &.selected a {
      background-color: #fff;
    }

    @media (min-width: 1600px) {
      &.selected a {
        background-color: $red;
      }
    }
  }

  a {
    display: block;
    /* image replacement */
    overflow: hidden;
    text-indent: 100%;
    white-space: nowrap;
    color: transparent;

    height: 10px;
    width: 10px;
    border-radius: 50%;

    .no-touch &:hover {
      background-color: #fff;
    }

    border: 2px solid #fff;

    @media (min-width: 1600px) {
      border: 2px solid $red;
    }

  }
}

JS

              
                jQuery(document).ready(function(){
  var duration = 250,
  animating = false;

  //initialize the slider
  $('.cd-slider-wrapper').each(function(){
    initSlider($(this));
  });

  function initSlider(sliderWrapper) {
    //cache jQuery objects
    var slider = sliderWrapper.find('.cd-slider'),
    sliderNav = sliderWrapper.find('.cd-slider-navigation'),
    sliderControls = sliderWrapper.find('.cd-slider-controls').find('li');

    //update visible slide when user clicks next/prev arrows
    sliderNav.on('click', '.next-slide', function(event){
      event.preventDefault();
      nextSlide(slider, sliderControls);
    });
    sliderNav.on('click', '.prev-slide', function(event){
      event.preventDefault();
      prevSlide(slider, sliderControls);
    });

    //detect swipe event on mobile - update visible slide
    slider.on('swipeleft', function(event){
      nextSlide(slider, sliderControls);
    });
    slider.on('swiperight', function(event){
      prevSlide(slider, sliderControls);
    });

    //update visible slide when user clicks .cd-slider-controls buttons
    sliderControls.on('click', function(event){
      event.preventDefault();
      var selectedItem = $(this);
      if(!selectedItem.hasClass('selected')) {
        // if it's not already selected
        var selectedSlidePosition = selectedItem.index(),
        selectedSlide = slider.children('li').eq(selectedSlidePosition),
        visibleSlide = retrieveVisibleSlide(slider),
        visibleSlidePosition = visibleSlide.index(),
        direction = '';
        direction = ( visibleSlidePosition < selectedSlidePosition) ? 'next': 'prev';
        updateSlide(visibleSlide, selectedSlide, direction, sliderControls);
      }
    });

    //keyboard slider navigation
    $(document).keyup(function(event){
      if(event.which=='37' && elementInViewport(slider.get(0)) ) {
        prevSlide(slider, sliderControls);
      } else if( event.which=='39' && elementInViewport(slider.get(0)) ) {
        nextSlide(slider, sliderControls);
      }
    });
  }

  function retrieveVisibleSlide(slider, sliderControls) {
    return slider.find('.visible');
  }
  function nextSlide(slider, sliderControls) {
    var visibleSlide = retrieveVisibleSlide(slider),
    nextSlide = ( visibleSlide.next('li').length > 0 ) ? visibleSlide.next('li') : slider.find('li').eq(0);
    updateSlide(visibleSlide, nextSlide, 'next', sliderControls);
  }
  function prevSlide(slider, sliderControls) {
    var visibleSlide = retrieveVisibleSlide(slider),
    prevSlide = ( visibleSlide.prev('li').length > 0 ) ? visibleSlide.prev('li') : slider.find('li').last();
    updateSlide(visibleSlide, prevSlide, 'prev', sliderControls);
  }
  function updateSlide(oldSlide, newSlide, direction, controls, paths) {
    if(!animating) {
      //don't animate if already animating
      animating = true;
      updateNavSlide(newSlide, controls);
      newSlide.addClass('is-animating');
          oldSlide.removeClass('visible');
          newSlide.addClass('visible').removeClass('is-animating');
          animating = false;
    }
  }

  function updateNavSlide(actualSlide, controls) {
    var position = actualSlide.index();
    controls.removeClass('selected').eq(position).addClass('selected');
  }

 /* How to tell if a DOM element is visible in the current viewport?
  * http://stackoverflow.com/questions/123999/how-to-tell-if-a-dom-element-is-visible-in-the-current-viewport
  */
  function elementInViewport(el) {
    var top = el.offsetTop;
    var left = el.offsetLeft;
    var width = el.offsetWidth;
    var height = el.offsetHeight;

    while(el.offsetParent) {
      el = el.offsetParent;
      top += el.offsetTop;
      left += el.offsetLeft;
    }

    return (
        top < (window.pageYOffset + window.innerHeight) &&
        left < (window.pageXOffset + window.innerWidth) &&
        (top + height) > window.pageYOffset &&
        (left + width) > window.pageXOffset
        );
  }
});
// end slider

// Google webfont
WebFontConfig = {
    google: { families: [ 'Source+Sans+Pro::latin' ] }
  };
  (function() {
    var wf = document.createElement('script');
    wf.src = 'https://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js';
    wf.type = 'text/javascript';
    wf.async = 'true';
    var s = document.getElementsByTagName('script')[0];
    s.parentNode.insertBefore(wf, s);
  })();

999px

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