/**
* {@inheritdoc}
*/
public function load(ObjectManager $manager)
{
$notesInfoArray = [['sharp_name' => 'C', 'flat_name' => 'C', 'accidental' => false, 'color' => '#006cb7'], ['sharp_name' => 'C♯', 'flat_name' => 'D♭', 'accidental' => true, 'color' => '#008e83'], ['sharp_name' => 'D', 'flat_name' => 'D', 'accidental' => false, 'color' => '#00854a'], ['sharp_name' => 'D♯', 'flat_name' => 'E♭', 'accidental' => true, 'color' => '#7fb439'], ['sharp_name' => 'E', 'flat_name' => 'E', 'accidental' => false, 'color' => '#fdb813'], ['sharp_name' => 'F', 'flat_name' => 'F', 'accidental' => false, 'color' => '#584742'], ['sharp_name' => 'F♯', 'flat_name' => 'G♭', 'accidental' => true, 'color' => '#c15e20'], ['sharp_name' => 'G', 'flat_name' => 'G', 'accidental' => false, 'color' => '#f58220'], ['sharp_name' => 'G♯', 'flat_name' => 'A♭', 'accidental' => true, 'color' => '#f04e46'], ['sharp_name' => 'A', 'flat_name' => 'A', 'accidental' => false, 'color' => '#8f0000'], ['sharp_name' => 'A♯', 'flat_name' => 'B♭', 'accidental' => true, 'color' => '#a23e97'], ['sharp_name' => 'B', 'flat_name' => 'B', 'accidental' => false, 'color' => '#6a489d']];
// Generate NoteInfo
$notesInfo = [];
foreach ($notesInfoArray as $noteInfoData) {
$noteInfo = new NoteInfo();
$noteInfo->setSharpName($noteInfoData['sharp_name']);
$noteInfo->setFlatName($noteInfoData['flat_name']);
$noteInfo->setAccidental($noteInfoData['accidental']);
$noteInfo->setColor($noteInfoData['color']);
$notesInfo[] = $noteInfo;
// ORM persist
$manager->persist($noteInfo);
}
// We start with C0
$midi = 12;
// A 440
$refFreq = 440.0;
$refValue = 57;
// Generates notes
$notes = [];
for ($octave = 0; $octave < 9; ++$octave) {
// Generate octaves
for ($noteNum = 0; $noteNum < 12; ++$noteNum) {
// Generate notes by octave
$note = new Note();
$value = $noteNum + $octave * 12;
$frequency = $refFreq * pow(2, ($value - $refValue) / 12);
$frequency = round($frequency, 3);
$note->setOctave($octave);
$note->setValue($value);
$note->setFrequency($frequency);
$note->setMidi($midi);
$note->setInfo($notesInfo[$noteNum]);
// Link Note to the previous one
if (!empty($notes[count($notes) - 1])) {
$note->setPrevious($notes[count($notes) - 1]);
}
$notes[] = $note;
// ORM persist
$manager->persist($note);
// Increment midi number
++$midi;
// Store reference for use in other DataFixtures
$this->addReference('note-' . $note->getInfo()->getSharpName() . $octave, $note);
}
}
// Save to DB
$manager->flush();
}
/**
* Serialize the Entity.
*
* @return array
*/
public function jsonSerialize()
{
return ['type' => 'notes', 'id' => $this->id, 'attributes' => ['value' => $this->value, 'octave' => $this->octave, 'frequency' => $this->frequency, 'midi' => $this->midi, 'sharp_name' => $this->info->getSharpName(), 'flat_name' => $this->info->getFlatName(), 'accidental' => $this->info->isAccidental(), 'color' => $this->info->getColor()]];
}
