text: import Layer from '../core/layer';
  import Matrix from '../shapes/matrix';
  
  const defaults = {
    normalise: 'none',
    gain: 1.0,
    channel: 0
  };
  
  /**
   * Helper to create a matrix layer.
   */
  export default class MatrixLayer extends Layer {
    /**
     * @param {AudioBuffer} buffer - The audio buffer to display.
     * @param {Object} options - An object to configure the layer.
     */
    constructor(matrixEntity, options) {
  
      options = Object.assign({}, defaults, options);
  
      super('entity', matrixEntity, options);
  
      this.configureShape(Matrix, {}, options);
    }
  }
  