onPinchSwipe

var onPinchSwipe: (centerPosInPix: Xy, zoomingSpeedInMMPerSec: Double, rotatingSpeedInMMPerSec: Double) -> Unit?

Two pointer rotating and zooming, or just zooming, swipe event. Lambda Signature: (centerPosInPix: Xy, zoomingSpeedInMMPerSec: Double, rotatingSpeedInMMPerSec: Double) -> Unit