Or: pull down for rotate CCW, pull up for rotate CW. Just sum up event.movementY to calculate rotations. Cons: A little slower than simply clicking, maybe, and

Or: pull down for rotate CCW, pull up for rotate CW. Just sum up event.movementY to calculate rotations. Cons: A little slower than simply clicking, maybe, and makes it easier to overshoot. Need to count rotations instead of clicks. Pros: Quite intuitive (that's how dials work in most DAWs for instance) and would work well on mobile, even if the tile size is small.