layer.pinchable.centerOrigin < boolean>

Sets the transform origin of your pinchable layer to the center point between your fingers. Set to true by default.
译：设置你的手指之间的中心点，你pinchable层变换原点。默认设置为真。

layerA = new Layer
layerA.pinchable.enabled = true

# Always scale from the center of the layer   
layerA.pinchable.centerOrigin = false