aframe-leap-hands/lib/circular-array.js

Leap Motion components for A-Frame VR

/**
 *
 * Can't seem to install dep from NPM with microbundle. :/
 * 
 * Simple circular array data structure, for storing a finite-length list of values and
 * automatically dropping values that no longer fit in the array. All operations are O(1).
 * @param {number} size Maximum number of values to retain.
 */
function CircularArray (size) {
  this._index = 0;
  this._size = size;
  this._array = [];
}

CircularArray.prototype._incr = function () { this._index = ++this._index % this._size; };
CircularArray.prototype.array = function () { return this._array; };
CircularArray.prototype.push = function (value) {
  this._array[this._index] = value;
  this._incr();
};

export { CircularArray };