void Update()
{
var pressure = MidiMaster.GetChannelAfterTouch();
transform.localScale = new Vector3(0.1f + pressure, 0.1f + pressure * 8.0f, 0.1f + pressure);
var color = new Color(pressure, 0.0f, 0.0f, 1.0f);
GetComponent <Renderer>().material.color = color;
}
// get channel after touch. this API can't indicate what pad is pressed
public static float GetAfterTouchPressure()
{
// TODO: support PolyAfterTouch
return(MidiMaster.GetChannelAfterTouch());
}