new mojs.Shape({
  shape:        'circle',
  scale:        { 0 : 1, easing: 'cubic.out' },
  fill:         { 'cyan': 'yellow', easing: 'cubic.in' },
  left:'10%',
  duration:     2000,
  repeat:       999,
}).play();
const circle = new mojs.Shape({
  shape:        'circle',
  scale:        { 0 : 1 },
  left:         '25%',
  fill:         { 'cyan': 'yellow' },
  radius:       25,

  duration:     2000,
  repeat:       999,
}).play();

const rect = new mojs.Shape({
  shape:        'rect',
  left:         '50%',
  fill:         'none',
  radius:       20,
  stroke:       { 'rgba(0,255,255, 1)' : 'magenta' },
  strokeWidth:  { 10: 0 },
  strokeDasharray: '100%',
  strokeDashoffset: { '-100%' : '100%' },
  angle:        { 0: 180 },

  duration:     2000,
  repeat:       999,
}).play();

const polygon = new mojs.Shape({
  shape:        'polygon',
  points:       5,
  left:         '75%',
  fill:         { 'deeppink' : '#00F87F' },
  x:            { 'rand(-100%, -200%)' : 0  },
  angle:        { 0: 'rand(0, 360)' },
  radius:       25,

  duration:     2000,
  repeat:       999,
}).play();