code: function fibonacci( num, scale, offset, smooth ) {
    if (!smooth) smooth = 0;
    var b = Math.round( smooth * Math.sqrt( num ) );
    var phi = (Math.sqrt( 5 ) + 1) / 2;
    var pts = [];
    for (var i = 0; i < num; i++) {
      var r = (i > num - b) ? 1 : Math.sqrt( i - 0.5 ) / Math.sqrt( num - (b + 1) / 2 );
      var theta = 2 * Math.PI * i / (phi * phi);
      pts.push( new Vector( r * scale * Math.cos( theta ), r * scale * Math.sin( theta ) ).add( offset ) );
    }
    return pts;
  }
docs: Generate fibonacci spiral points