// based on https://css-tricks.com/css3-clock
// with help from http://stackoverflow.com/questions/23847310/css-and-jquery-analog-clock-smooth-animation


// scroll down for alternate code for smooth movement rather than "ticking"

$(function() {
 
      setInterval( function() {
      var seconds = new Date().getSeconds();
      var sdegree = seconds * 6;
      var srotate = "rotate(" + sdegree + "deg)";
      
      $("#sec").css({ "transform": srotate });
          
      }, 1000 );
      
      setInterval( function() {
      var hours = new Date().getHours();
      var mins = new Date().getMinutes();
      var hdegree = hours * 30 + (mins / 2);
      var hrotate = "rotate(" + hdegree + "deg)";
      
      $("#hour").css({ "transform": hrotate});
          
      }, 1000 );

      setInterval( function() {
      var mins = new Date().getMinutes();
      var mdegree = mins * 6;
      var mrotate = "rotate(" + mdegree + "deg)";
      
      $("#min").css({ "transform" : mrotate });
          
      }, 1000 );
 
});


// comment out code above and uncomment below for smooth movement rather than "ticking"

/*//use requestAnimationFrame for smoothness (shimmed with setTimeout fallback)
window.requestAnimFrame = (function(){
  return  window.requestAnimationFrame       ||
          window.webkitRequestAnimationFrame ||
          window.mozRequestAnimationFrame    ||
          function( callback ){
              window.setTimeout(callback, 1000 / 60);
          };
})();

//initialize the clock in a self-invoking function
(function clock(){ 
    var hour = document.getElementById("hour"),
        min = document.getElementById("min"),
        sec = document.getElementById("sec");
    //set up a loop
    (function loop(){
        requestAnimFrame(loop);
        draw();
    })();
    //position the hands
    function draw(){
        var now = new Date(),//now
            then = new Date(now.getFullYear(),now.getMonth(),now.getDate(),0,0,0),//midnight
            diffInMil = (now.getTime() - then.getTime()),// difference in milliseconds
            h = (diffInMil/(1000*60*60)),//hours
            m = (h*60),//minutes
            s = (m*60);//seconds
        //rotate the hands accordingly
        sec.style.webkitTransform = "rotate(" + (s * 6) + "deg)";
        hour.style.webkitTransform = "rotate(" + (h * 30 + (h / 2)) + "deg)";
        min.style.webkitTransform = "rotate(" + (m * 6) + "deg)";
    } 
})();*/