/**
* Reads bend
*
* @param NoteEffect $effect
*/
public function readBend(NoteEffect $effect)
{
$bend = new EffectBend();
$this->reader->skip(5);
$points = $this->reader->readInt();
for ($i = 0; $i < $points; $i++) {
$bendPosition = $this->reader->readInt();
$bendValue = $this->reader->readInt();
$this->reader->readByte();
//vibrato
$pointPosition = round($bendPosition * EffectBend::MAX_POSITION_LENGTH / GuitarProReaderInterface::GP_BEND_POSITION);
$pointValue = round($bendValue * EffectBend::SEMITONE_LENGTH / GuitarProReaderInterface::GP_BEND_SEMITONE);
$bend->addPoint($pointPosition, $pointValue);
}
if (count($bend->getPoints())) {
$effect->setBend($bend);
}
}
private function writeBend(EffectBend $bend)
{
$points = count($bend->getPoints());
$this->writeByte(1);
$this->writeInt(0);
$this->writeInt($points);
for ($i = 0; $i < $points; $i++) {
$point = $bend->getPoints()[$i];
$this->writeInt(intval($point->getPosition() * GprInterface::GP_BEND_POSITION / EffectBend::MAX_POSITION_LENGTH));
$this->writeInt(intval($point->getValue() * GprInterface::GP_BEND_SEMITONE / EffectBend::SEMITONE_LENGTH));
$this->writeByte(0);
}
}
public function makeBend(MidiSequenceHelper $sHelper, $track, $start, $duration, EffectBend $bend, $channel, $midiVoice, $bendMode)
{
$points = $bend->getPoints();
for ($i = 0; $i < count($points); $i++) {
$point = $points[$i];
$bendStart = $start + $point->getTime($duration);
$value = self::DEFAULT_BEND + intval($point->getValue() * self::DEFAULT_BEND_SEMI_TONE / EffectBend::SEMITONE_LENGTH);
$value = $value <= 127 ? $value : 127;
$value = $value >= 0 ? $value : 0;
$this->addBend($sHelper, $track, $bendStart, $value, $channel, $bendMode);
if (count($points) > $i + 1) {
$nextPoint = $points[$i + 1];
$nextValue = self::DEFAULT_BEND + intval($nextPoint->getValue() * self::DEFAULT_BEND_SEMI_TONE / EffectBend::SEMITONE_LENGTH);
$nextBendStart = $start + $nextPoint->getTime($duration);
if ($nextValue != $value) {
$width = ($nextBendStart - $bendStart) / abs($nextValue - $value);
//asc
if ($value < $nextValue) {
while ($value < $nextValue) {
$value++;
$bendStart += $width;
$this->addBend($sHelper, $track, $bendStart, $value <= 127 ? $value : 127, $channel, $bendMode);
}
//desc
} else {
if ($value > $nextValue) {
while ($value > $nextValue) {
$value--;
$bendStart += $width;
$this->addBend($sHelper, $track, $bendStart, $value >= 0 ? $value : 0, $channel, $bendMode);
}
}
}
}
}
}
$this->addBend($sHelper, $track, $start + $duration, self::DEFAULT_BEND, $channel, $bendMode);
}