Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                
<html>
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1">
  </head>
  <body>
    <div class="js-spiral">
      <div class="js-section">
        <div class="message">
          Scroll, Use Arrow Keys or Click<br><br>
          <h2>I used this scrolling interface to create <a href="https://narrowdesign.com" target="_blank">narrowdesign.com</a></h2>
        </div>
      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
      <div class="js-section">

      </div>
    </div>
  </body>
</html>

              
            
!

CSS

              
                body {
  padding: 0;
  margin: 0;
  background-color: #113232;
  color: #fff;
}
a {
  color: #fff;
}
.js-spiral {
  position: fixed;
}
.js-section {
  position: absolute;
  left: -100%;
  box-sizing: border-box;
  transition: .2s border ease-out;
  border: 2px solid #113232;
}
.js-section:hover {
  border-radius: 5%;
  border: 10px solid #113232;
}
.message {
  position: absolute;
  width: 50%;
  left: 5vh;
  bottom: 10vh;
}
              
            
!

JS

              
                
$(function() {

  var WIN = $(window);
  var sections = $('.js-section');
  var spiral = $('.js-spiral')

  var _winW;
  var _winH;
  var smallScreen;
  var landscape;
  var aspect = .618033;
  var axis = .7237;
  var spiralOrigin;

  var rotation = 0;
  var sectionCount = sections.length;
  var currentSection = 0;
  var touchStartY = 0;
  var touchStartX = 0;
  var moved = 0;
  var animRAF;
  var animating = false;
  var scrollTimeout;

  var userAgent = window.navigator.userAgent.toLowerCase(),
      firefox = userAgent.indexOf('firefox') != -1 || userAgent.indexOf('mozilla') == -1,
      ios = /iphone|ipod|ipad/.test( userAgent ),
      safari = (userAgent.indexOf('safari') != -1 && userAgent.indexOf('chrome') == -1) || ios,
      linux = userAgent.indexOf('linux') != -1,
      windows = userAgent.indexOf('windows') != -1;

  resizeHandler();

// EVENTS
/////////

  WIN.on('resize',resizeHandler);
  WIN.on('scroll',function(e){
    e.preventDefault();
  })

  WIN.on('wheel', function(e) {
    var deltaY = -e.originalEvent.deltaY;
    if (windows || linux) {
      deltaY = e.deltaY * 5;
    }
    moved = -deltaY || 0;
    rotation += moved/-10;
    rotation = trimRotation();
    e.preventDefault();
    startScrollTimeout()
    cancelAnimationFrame(animRAF);
    scrollHandler();
  });

  WIN.on('touchstart', function(e) {
    e.preventDefault()
    var touch = e.originalEvent.touches[0] || e.originalEvent.changedTouches[0];
    moved = 0;
    touchStartX = touch.pageX;
    touchStartY = touch.pageY;
    cancelAnimationFrame(animRAF);
  })
  WIN.on('touchmove', function(e) {
    e.preventDefault()
    var touch = e.originalEvent.touches[0] || e.originalEvent.changedTouches[0];
    moved = ((touchStartY - touch.pageY)+(touchStartX - touch.pageX)) * 3;
    touchStartX = touch.pageX;
    touchStartY = touch.pageY;
    rotation += moved/-10;
    rotation = trimRotation();
    startScrollTimeout();
    cancelAnimationFrame(animRAF);
    scrollHandler()
  });
  WIN.on('touchend', function(e) {
    animateScroll()
  })

  WIN.on('keydown',function(e) {
    if (e.keyCode === 39 || e.keyCode === 40 || e.keyCode === 32) {
      cancelAnimationFrame(animRAF);
      animateScroll((currentSection + 1) * -90,rotation)
    } else if (e.keyCode === 37 || e.keyCode === 38) {
      cancelAnimationFrame(animRAF);
      animateScroll((currentSection - 1) * -90,rotation)
    }
    scrollHandler()
  })

  sections.on('click',function() {
    cancelAnimationFrame(animRAF)
    animateScroll($(this).index() * -90,rotation);
  })


// FUNCTIONS
////////////
  function scrollHandler() {
    requestAnimationFrame(function(){
      var scale = Math.pow(aspect,rotation/90);
      currentSection = Math.min(sectionCount + 2,Math.max(-sectionCount,Math.floor((rotation-30)/-90)));
      spiral.css({
        transform: 'rotate(' + rotation + 'deg) scale(' + scale + ')',
      })
      sections.removeClass('active')
      sections.eq(currentSection).addClass('active')
    })
  }
  function animateScroll(targR,startR,speed) {
    var distance = startR - targR;
    var mySpeed = speed || .2;
    if (((targR || Math.abs(targR) === 0) && Math.abs(targR - rotation) > .1) || Math.abs(moved) > 1) {
      if (targR || Math.abs(targR) === 0) {
        rotation += mySpeed * (targR - rotation);
      } else {
        moved *= .98;
        rotation += moved/-10;
      }
      rotation = trimRotation();
      scrollHandler();
      animRAF = requestAnimationFrame(function(){
        animateScroll(targR,startR,speed)
      });
    } else if (targR || Math.abs(targR) === 0) {
      cancelAnimationFrame(animRAF)
      rotation = targR;
      rotation = trimRotation();
      scrollHandler();
    }
  }

  function buildSpiral() {
    // rotate around this point
    spiralOrigin = Math.floor(_winW * axis) + 'px ' + Math.floor(_winW * aspect * axis) +'px';
    var w = _winW * aspect;
    var h = w; // they're squares
    if (smallScreen && !landscape) { // flip it 90deg if it's a portrait phone
      spiralOrigin = Math.floor((_winW/aspect) * aspect * (1 - axis)) +'px ' + Math.floor((_winW/aspect) * axis) + 'px ';
      w = _winW;
      h = _winW;
    }
    // HACK to smooth out Chrome vs Safari/Firefox
    var translate = '';
    if (safari || firefox) {
      translate = 'translate3d(0,0,0)'
    }
    // END HACK

    spiral.css({
      transformOrigin: spiralOrigin,
      backfaceVisiblity: 'hidden'
    })
    sections.each(function(i){
      var myRot = Math.floor(90*i);
      var scale = Math.pow(aspect, i);
      $(this).css({
        width: w,
        height: h,
        transformOrigin: spiralOrigin,
        backfaceVisiblity: 'hidden',
        backgroundColor: 'rgb(' + Math.floor(255-i*(255/sectionCount)) + ',50,50)',
        transform: 'rotate(' + myRot + 'deg) scale(' + Math.pow(aspect, i) + ') ' + translate
      })
    })
    scrollHandler();
  }

  function resizeHandler () { // Set the size of images and preload them
    _winW = window.innerWidth/(1000/window.innerHeight);
    _winH = window.innerHeight;
    smallScreen = _winW < 960;
    landscape = _winH < _winW;
    buildSpiral()
  }

  // keep it from getting too small or too big
  function trimRotation() {
    return Math.max(-1500, Math.min(1200, rotation))
  }

  // if no scrolling happens for 200ms, animate to the closest section
  function startScrollTimeout () {
    clearTimeout(scrollTimeout)
    if (currentSection > -1 && currentSection < sectionCount) {
      scrollTimeout = setTimeout(function(){
        cancelAnimationFrame(animRAF);
        animateScroll(currentSection * -90,rotation,.15);
      },200);
    }
  }
})

              
            
!
999px

Console