maia-util/dist/comp_obj2note_point_set.js

Utility math and music functions supporting various applications by Music Artificial Intelligence Algorithms, Inc.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = comp_obj2note_point_set;
// File conversion.
function comp_obj2note_point_set(comp_obj) {
  // Tom Collins 2/2/2015.
  // In
  // comp_obj Object mandatory
  // Out Array
  // This function iterates over the notes property of a Composition object,
  // and converts the objects found there into a point-set format, with
  // so-called columns for ontime, MNN, MPN, duration, staff number, and
  // velocity in [0, 1].

  var notes = comp_obj.notes;
  var out_array = [];
  for (var inote = 0; inote < notes.length; inote++) {
    var note = [notes[inote].ontime, notes[inote].MNN, notes[inote].MPN, notes[inote].duration, notes[inote].staffNo];
    if (notes[inote].tonejs !== undefined && notes[inote].tonejs.volume !== undefined) {
      note.push(notes[inote].tonejs.volume);
    } else if (notes[inote].velocity !== undefined) {
      note.push(notes[inote].velocity);
    } else {
      note.push(.8);
    }
    out_array.push(note);
  }
  return out_array;
}