Example #1
0
  /**
   * Writes a bass line to the track
   *
   * @param chord chord, which notes are using to write a bass line
   * @param harmony harmony, which notes we use to made a bass line
   * @param track track on which we write a bass line
   * @throws TWDataException
   */
  public static void WriteBassLine(TWChord chord, TWHarmony harmony, TWInstrumentTrack track) {
    TWScale HarmonyScale = TWScaleManager.constructHarmonyScale(harmony);
    Random rnd = new Random();

    // One measure contains only eighth notes
    for (int i = 0; i < 8; i++) {
      int randNoteFromScale = rnd.nextInt(HarmonyScale.ScaleSize());
      int randNoteOnFret = rnd.nextInt(2);
      int randNoteInFirstPart = rnd.nextInt(4);
      int randPlaceInFirstPart = rnd.nextInt(4);
      boolean PlaceInFirstPart = false;

      // Bass line divided into two parts. First part contains 6 eighth notes,
      // preferably main note from chord.
      // Second part contains 2 eighth notes.

      if (i == 0 || i == 1 || i == 2 || i == 3 || i == 4 || i == 5) {
        // Writes random note in first part. Probability 1/4
        if (randNoteInFirstPart == 0) {
          // Writes note in random first part place. Probability 1/4
          if (i == randPlaceInFirstPart) {
            PlaceInFirstPart = true;
            BassLineNote(HarmonyScale.getNote(randNoteFromScale), randNoteOnFret, track);
          }
        }
        // Writes main note.
        if (!PlaceInFirstPart) BassLineNote(chord.getNote(0), 0, track);
      }
      // Second part. Writes random note from harmony scale.
      if (i == 6 || i == 7)
        BassLineNote(HarmonyScale.getNote(randNoteFromScale), randNoteOnFret, track);
    }
  }
Example #2
0
  /**
   * Writes a simple bass line to the track
   *
   * @param chord chord, which notes are using to write a bass line
   * @param track track on which we write a bass line
   * @throws TWDataException
   */
  public static void WriteSimpleBassLine(TWChord chord, TWInstrumentTrack track)
      throws TWDataException {
    TWSimpleNote Note;
    int[] frets;

    // One measure contains only eighth notes
    for (int i = 0; i < 8; i++) {
      // Use first, main note from given chord
      Note = chord.getNote(0);
      frets = track.getFretsByNoteAndString(Note, 4);

      // Writes it on fourth string
      track.addNoteNew(frets[0], 4, 8);
    }
  }
Example #3
0
  /**
   * Writes a bass line with pauses to the track
   *
   * @param chord chord, which notes are using to write a bass line
   * @param track track on which we write a bass line
   * @throws TWDataException
   */
  public static void WritePauseBassLine(TWChord chord, TWInstrumentTrack track)
      throws TWDataException {
    Random rn = new Random();

    TWSimpleNote Note;
    int[] frets;

    // One measure contains only eighth notes
    for (int i = 0; i < 8; i++) {
      int randPause = rn.nextInt(3);

      // Writes eighth rest. Probability 1/3
      if (randPause == 0) track.addRest(8);
      else {
        // Use first, main note from given chord
        Note = chord.getNote(0);
        frets = track.getFretsByNoteAndString(Note, 4);

        // Writes it on fourth string
        track.addNoteNew(frets[0], 4, 8);
      }
    }
  }