onPanCancel method
void
onPanCancel()
Implementation
void onPanCancel() {
if (_lockedAxis == _DragAxis.vertical && _verticalStarted) {
morphController.endDrag(0, 600);
}
_lockedAxis = _DragAxis.none;
_accumulated = Offset.zero;
_verticalStarted = false;
_sampleBuffer.clear();
}