Returns null when no off-curve guidance beep should play (on-curve or beyond maxDistancePx). curveVertical: 'above' follows screen-space convention (y increases downward), so above is visually higher and therefore maps to a higher pitch.
maxDistancePx
curveVertical: 'above'
above
Returns null when no off-curve guidance beep should play (on-curve or beyond
maxDistancePx).curveVertical: 'above'follows screen-space convention (y increases downward), soaboveis visually higher and therefore maps to a higher pitch.