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HTML

              
                <div class="workspace" ng-app="app" ng-controller="controller">

	<div class="case">
		<!-- this is the thing -->
		<calendar-dial date="date" config="config"></calendar-dial>
	</div>

	<div class="output">
		<span data-title="before today ok" class="tooltip" ng-class="{'show-tooltip': config.allowBeforeToday}">
			<i tap="config.allowBeforeToday = !config.allowBeforeToday" class="fa fa-history fa-fw fa-lg" ng-class="{'fg-ok': config.allowBeforeToday}"></i>
		</span>
		<span>
			<i ng-click="reset()" class="fa fa-refresh fa-fw fa-lg"></i>
		</span>
		<span data-title="weekend alert" class="tooltip" ng-class="{'show-tooltip':config.useWeekendAlert}">
			<i tap="config.useWeekendAlert = !config.useWeekendAlert" class="fa fa-exclamation-circle fa-fw fa-lg" ng-class="{'fg-alert': config.useWeekendAlert}"></i>
		</span>
	</div>

</div>
              
            
!

CSS

              
                $dark: #9BCE5F;
$light: #fff;
$warning: #FF3B80;
$alert: #FFF048;
$ok: #9BCE5F;
$timing: .3s;

.fg-alert {
	color: $alert;
}

.fg-warning {
	color: $warning;
}

.fg-ok {
	color: $ok;
}

.bezel {
  font-size: 65vmin;
  width: 1em;
  height: 1em;
  position: relative;
  line-height: 1;
  color: inherit; /* inherit from parent element or set explicitly: $light */
  border-radius: 100%;
	transition: background $timing ease-out;
  &::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    transform: scale(1.05);
    border: .04em solid;
    border-radius: 100%;
  }
	// just because we can, doesn't mean we should, unless we should.
	// &.is-weekend {background: #FFF048;}
	// &.weekday-1 {color: #FF703A;} // monday
	// &.weekday-2 {color: #FBA900;} // tuesday
	// &.weekday-3 {color: #FFF048;} // wednesday
	// &.weekday-4 {color: #63BC66;} // thursday
	// &.weekday-5 {color: #19A79A;} // friday
	// &.weekday-6 {color: #FFF048;} //color: #7E53C5;} // saturday
	// &.weekday-7 {color: #FFF048;} //color: #FF3B80;} // sunday
	&.is-past {
		background: $warning;
	}
	.lcd {
    position: absolute;
    z-index: 1;
    top: 65%;
    left: 50%;
		width: 100%;
		line-height: 1;
    transform: translate(-50%, -50%);
		text-align: center;
		display: flex;
		flex-direction: column;
		justify-content: space-around;
    font-size: 80%;
    font-family: "DIN Condensed", Impact, Helvetica, sans-serif;
    user-select: none;
		white-space: nowrap;
    pointer-events: auto;
    -webkit-font-smoothing: subpixel-antialiased;
    transition:
      color $timing ease-out,
      background $timing ease-out,
      top $timing ease-out;
		> div {
	    position: relative;
		}
  }
  .date {
    font-size: 15%;
  }
  .day {
    font-size: 25%;
  }
  .when {
    font-size: 13%;
		text-transform: uppercase;
		opacity: .6;
  }
	.icon {
			line-height: 1;
			font-size: 20%;
			position: absolute;
			left: 50%;
			top: 30%;
			transition: $timing ease-out;
		&.weekend-alert {
			opacity: 0;
			color: $alert;
			pointer-events: none;
			transform: translate(-50%, -50%) scale(1.3);
		}
		&.calendar-action {
			opacity: 1;
	    cursor: pointer;
			transform: translate(-50%, -50%);
		}
	}
	&.is-weekend {
		.calendar-action {opacity: 0;}
		.weekend-alert {opacity: 1;}
	}
  .crown {
    position: absolute;
    top: 0;
    right: 50%;
    bottom: 50%;
    left: 50%;
		transition: transform $timing*2 ease-out;
    transform-origin: center bottom;
    pointer-events: none;
    > span {
      position: absolute;
      top: 0;
      left: 50%;
			text-align: center;
      pointer-events: auto;
			// transition: transform $timing/2 ease-out; // too much fun
	    font-family: "DIN Alternate", Impact, Helvetica, sans-serif;
    }
		&.step {
			z-index: 1;
			> span {
				font-size: 8.5%;
				line-height: 2.2;
				cursor: pointer;
				background: $dark;
				transform: translate(-50%, -50%) rotate(0deg);
				box-shadow: 0 0 0 .2em currentColor;
				border-radius: 2em;
				width: 2.2em;
				height: 2.2em;
			}
		}
		&.today > span {
	    font-size: 6%;
			color: #fff;
      background: currentColor;
      transform: translate(-50%, -50%) rotate(45deg);
      box-shadow: 0 0 0 .15em $dark;
      border-radius: 1em;
      width: 1em;
      height: 1em;
			span {
				position: absolute;
				blend-mode: screen;
				top: 50%;
				left: 300%;
				line-height: 2;
		    -webkit-font-smoothing: subpixel-antialiased;
	      transform: translate(-50%, -50%) rotate(0deg);
				border-radius: 2em;
				width: 2em;
				height: 2em;
			}
		}
  }
	
	// ACTIVE
	&.active {
		.crown {
			transition: none;
		}
	}

  // TOUCH BOX
  &.touch {
		z-index: 0;
		.icon {
			top: 50%;
			&.calendar-action {
				opacity: 0;
			}
		}
    .lcd {
      top: 0%;
      background: rgba(#000, .05);
      pointer-events: none;
      padding: .1em;
			line-height: 1;
      z-index: 2;
      left: 50%;
			width: 120%;
      transform: translate(-50%, -50%);
      border-radius: .05em;
      backdrop-filter: blur(.05em);
    }
  }
}

// general layout
// BORING
body {
  background: $dark;
	color: $light;
}
.workspace {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.output {
	text-align: center;
	display: flex;
	flex-direction:row;
	justify-content: space-around;
	align-items: center;
	background: #343439; //rgba($light, .3);
  padding: 1em 0;
	> span {
		position: relative;
	}
}

.case {
	flex: 1;
	display: flex;
	flex-direction:row;
	justify-content: space-around;
	align-items: center;
}

.config {
	display:flex;
	flex-direction:row;
	flex: none;
}

.tooltip {
	&::before,
	&::after {
		opacity: 0;
		pointer-events: none;
		font-size: 4vmin;
		white-space: nowrap;
		position: absolute;
		left: 50%;
		transition: .5s linear;
		bottom: 50%;
	}
	&::after {
		content: attr(data-title);
		background: #000;
		padding: .5em;
		border-radius: .3em;
		transform: translate(-50%, -40%);
	}
	&::before {
		content: '';
		transform: translate(-50%, 0%);
		border: .5em solid transparent;
		border-top-color: #000;
	}
	&.show-tooltip {
		&::before,
		&::after {
			bottom: 100%;
			opacity: 1;
		}
	}
}
              
            
!

JS

              
                (function($angular, $moment, Hammer) {
  'use strict';

  $angular.module('app', [])
	.controller('controller', ['$scope', function($scope) {
		$scope.date = null; //$moment().add(1, 'day').startOf('day'); //.add(1, 'day');
		
		var calendarClick = function(date){
			console.log('caendar action clicked!', date);
			window.alert('Pancake says:\n\nload an actual calendar\nselect: ' + date.format('MMM D, YYYY'));
		};
		
		$scope.config = {
			useWeekendAlert: false,
			allowBeforeToday: false,
			calendarAction: calendarClick,
			text: {
				diff: 0,
				today: 'today',
				date: '',
				day: '',
				when: ''
			}
		};
		
		$scope.setDate = {
			month: $moment().month(),
			day: $moment().date(),
			year: $moment().year()
		};
		
		$scope.$watch('setDate', function(d){
			// console.log(d);
			$scope.$broadcast('set:date', $moment([d.year, d.month, d.day]));
		}, true);

    $scope.format = function(datetime) {
      return new Date(datetime);
    };

	  $scope.reset = function(date) {
			$scope.$broadcast('reset:date', date);
    };
	}])
	
	.directive('tap', [function() {
		return function(scope, element, attr) {
			var hammerTap = new Hammer(element[0], {});
			hammerTap.on('tap', function() {
				scope.$apply(function() {
					scope.$eval(attr.tap);
				});
			});
		};
	}])
	
	.directive('calendarDial', ['UiHelpers', function(ui) {
    var _rotate = function(el, degrees, shift) {
			var translate = shift ? 'translate(-50%, -50%) ' : '';
      $angular.element(el).css({
        transform: translate + 'rotate(' + degrees + 'deg)'
      });
    };

		var _getDayByDegree = function(max, d, s){
			var i = max - Math.floor(Math.abs(d + s/2)/s);
			var k = (i === 0 ? max : (max - i < 1 ? 1 : (max - i > max ? max : max - i)));
			return k;
		};

		var _getDegreeByDay = function(max, day){
			return (ui.maxDegrees/max * day);
		};

		return {
      restrict: 'E',
      replace: true,

      scope: {
        date: '=?',
				config: '=?'
      },

      template: '' +
        '<div class="calendar-dial bezel" ng-class="setClasses()">' +
        	'<div class="lcd">' +
        		'<div class="day">{{config.text.day}}</div>' +
        		'<div class="when">{{config.text.when}}</div>' +
        		// '<div class="date">{{config.text.date}}</div>' +
        	'</div>' +
					'<div ng-if="config.calendarAction" tap="config.calendarAction(date)" class="icon calendar-action fa fa-calendar-o"></div>' +
					'<div ng-if="config.useWeekendAlert" class="icon weekend-alert fa fa-exclamation-circle"></div>' +
        	'<div class="crown today"><span><span data-title="{{config.text.today}}"></span></span></div>' +
        	'<div class="crown step"><span>{{config.text.diff}}</span></div>' +
      	'</div>' +
        '',

      link: function(scope, element) {
				// if (!scope.date) {
				// 	scope.date = $moment().startOf('day'); // current date
				// }

				var max = 31; //scope.date.daysInMonth();
  
				scope.format = function(datetime) {
          return new Date(datetime);
        };
	
				var step = $angular.element(element[0].querySelector('.step'));
        var lcd = $angular.element(element[0].querySelector('.lcd'));

        var day = {
					deg: 0,
					max: max,
					step: ui.maxDegrees/max,
					element: step,
					handle: $angular.element(element[0].querySelector('.step > span')),
					canvas: element
				};

				var key = {
					deg: 0,
					max: max,
					step: ui.maxDegrees/max,
					element: $angular.element(element[0].querySelector('.today')),
					handle: $angular.element(element[0].querySelector('.today > span')),
					label: $angular.element(element[0].querySelector('.today > span span')),
					canvas: element
				};

				var _setDayTypes = function(date){
					scope.weekday = date.isoWeekday();
					scope.weekend = (scope.weekday === 6 || scope.weekday === 7);
				};

				var _setDisplay = function(date, mode){
					var diff = date.diff(scope.today, 'days');
					var f1 = scope.thisYear !== date.year() ? 'MMMM D, YYYY' : 'MMMM D';
					var f2 = 'ddd, MMM D';
					return {
						diff: (diff > 0 ? '+' + diff : diff),
						today: (Math.abs(diff) > 1 ? 'today':''),
						when: (diff === 0 || diff === 1) ? date.format(f2) : date.fromNow(), //(scope.today),
						date: date.format(f1),
						day: date.calendar(scope.today, {
							lastWeek: f2,
							lastDay: '[Yesterday]',
							sameDay: '[Today]',
							nextDay: '[Tomorrow]',
							nextWeek: f2,
							sameElse: f2
						})
					};
				};

				var init = function(reset) {
					if(!scope.date || reset) {
						scope.isPast = false;
						scope.date = $moment().add(1, 'day').startOf('day'); // set to today + 1 day
						// bypass weekends
						if(scope.config.useWeekendAlert) {
							if(scope.date.isoWeekday() === 6) {
								scope.date.add(1, 'day');
							}
							if(scope.date.isoWeekday() === 7) {
								scope.date.add(1, 'day');
							}
						}
					}
					_setDayTypes(scope.date);
					scope.today = $moment().startOf('day');
					scope.thisYear = scope.today.year();
					var initKey = _getDegreeByDay(max, scope.today.date());
					key.deg = initKey;
					_rotate(key.element[0], initKey);
					var initDay = _getDegreeByDay(max, scope.date.date());
					day.deg = initDay;
					_rotate(day.element[0], initDay);
					_rotate(day.handle[0], -initDay, true);
					scope.config.text = _setDisplay(scope.date, 'date');
				};
				
				var prek, input, n, k, dim, diff=0, deg=0, lastDeg=0, pointerDeg, relativeDeg, rotationDeg;
				
				var start = function(e, max, handle){
					n = ui.maxDegrees/max;
					input = e.srcEvent && e.srcEvent.changedTouches ? e.srcEvent.changedTouches : e.pointers;
					deg = ui.getDegrees(input[0], element[0]);
					lastDeg = handle.deg;
				};

				var pan = function(e){
					input = e.srcEvent && e.srcEvent.changedTouches ? e.srcEvent.changedTouches : e.pointers;
					pointerDeg = ui.getDegrees(input[0], element[0]);
					relativeDeg = pointerDeg - deg;
					rotationDeg = lastDeg + relativeDeg;
					rotationDeg = isNaN(rotationDeg) ? lastDeg : rotationDeg;
					rotationDeg = rotationDeg <= 0 ? ui.maxDegrees-Math.abs(rotationDeg) : rotationDeg;
					rotationDeg = rotationDeg >= ui.maxDegrees ? rotationDeg-ui.maxDegrees :  rotationDeg;
					deg = pointerDeg;
					lastDeg = rotationDeg;
				};

        // hammer time
        scope.touching = false;
        var hammerStep = new Hammer(day.canvas[0]);
        var hammerLcd = new Hammer(lcd[0], {});
        hammerStep.get('pan').set({direction: Hammer.DIRECTION_ALL, threshold: 0});
				hammerStep.on('panstart', function(e) {
					scope.touching = e.srcEvent && e.srcEvent.changedTouches ? true : false;
					scope.active = true;
					start(e, max, day);
				})
				.on('pan panmove', function(e) {
					pan(e);

					dim = scope.date.daysInMonth();
					k = _getDayByDegree(dim, rotationDeg, n);

					diff = scope.date.diff(scope.today, 'days');
					scope.isPast = (diff < 1);
					
					if(k && prek && prek !== k) {
						if(prek === 1 && k > 2) {
							//prev month
							scope.date = scope.date.subtract(1, 'day');
							k = scope.date.daysInMonth();
							// k = dim;
						}

						else if(k === 1 && prek === dim) {
							// next month
							scope.date.add(1, 'day');
							dim = scope.date.daysInMonth();
						}
						scope.date.date(k);
					}
					prek = k;

					scope.config.text = _setDisplay(scope.date);
					_setDayTypes(scope.date);						

					if(scope.isPast && !scope.config.allowBeforeToday) {
							k = scope.today.date();
							day.deg = k*n;
							// if(rotationDeg > day.deg) {
							// 		day.deg = rotationDeg;
							// }
							_rotate(day.element[0], day.deg);
							_rotate(day.handle[0], -day.deg, true);
					} else {
							_rotate(day.element[0], rotationDeg);
							_rotate(day.handle[0], -rotationDeg, true);
							scope.$apply();
					}
				})
				.on('panend pancancel', function() {
					scope.touching = false;
					scope.active = false;
					if(scope.isPast && !scope.config.allowBeforeToday) {
						k = scope.today.date();
						scope.date = $moment(scope.today); // clone today to reset past date
						scope.config.text = _setDisplay(scope.date);
						_setDayTypes(scope.date);						
						scope.isPast = false;
					}
					day.deg = k*n;
					_rotate(day.element[0], day.deg);
					_rotate(day.handle[0], -day.deg, true);
					scope.$apply();
				});
				
				scope.setClasses  = function(){
					var classes = [];
					if(scope.weekday) {classes.push('weekday-' + scope.weekday);}
					if(scope.isPast && !scope.config.allowBeforeToday) {classes.push('is-past');}
					if(scope.active) {classes.push('active');}
					if(scope.touching) {classes.push('touch');}
					if(scope.config.useWeekendAlert && scope.weekend) {classes.push('is-weekend');}
					if(scope.config.calendarAction) {classes.push('has-calendar');}
					return classes.join(' ');
				};

				init();

				scope.$on('reset:date', function(date){
					if(date) {
						scope.date = $moment(date);
					}
					init(true);
				});

				// scope.$on('set:date', function(date){
				// 	scope.date = $moment(date);
				// 	init();
				// });
			}
    };
  }])
	
	.factory('UiHelpers', [function(){
		var maxDegrees = 360;
		var maxRadians = 6.283185307179586;

		// helpers
		var _getNumbers = function(target){
			var numbers = {};
			if(target) {
				numbers = {
					t: target.offsetTop,
					r: target.offsetLeft + target.offsetWidth,
					b: target.offsetTop + target.offsetHeight,
					l: target.offsetLeft,
					w: target.offsetWidth,
					h: target.offsetHeight,
				};
				// find x|y center
				numbers.cx = (numbers.l + (numbers.w/2));
				numbers.cy = (numbers.t + (numbers.h/2));
			}
			return numbers;
		};

		var _getRadians = function(input, el){
			var metrics = _getNumbers(el);
			var radians = Math.atan2((input.clientY - metrics.cy), (input.clientX - metrics.cx));
			radians += maxRadians/4;
			if(radians < 0) {
				radians += maxRadians;
			}
			return radians;
		};

		var _getDegrees = function(input, el){
			var radians = _getRadians(input, el);
			var degree = radians * 180/Math.PI;
			return degree;
		};

		return {
			maxRadians: maxRadians,
			maxDegrees: maxDegrees,
			getNumbers: _getNumbers,
			getRadians: _getRadians,
			getDegrees: _getDegrees
		};
	}]);

})(window.angular, window.moment, window.Hammer);







/*
IDEAS:
add tappable logical time spots like, "tomorrow, 1 week, etc."
tap to open calendar anywhere in the ring
*/
              
            
!
999px

Console