3.3.6.12 PINCH_ZOOM_THRESHOLD

This parameter is valid only if 2 finger gesture is selected. The PINCH_ZOOM_THRESHOLD limits the allowable distance between the two fingers to detect the pinch and the zoom gestures. After crossing the PINCH_ZOOM_THRESHOLD, if the distance between the contacts is reducing, then the gesture is reported as 'PINCH'. After crossing the PINCH_ZOOM_THRESHOLD, if the distance between the contacts is increasing, then the gesture is reported as 'ZOOM'.

Unit: coordinates

Example: If PINCH_ZOOM_THRESHOLD is configured as 20, then after crossing 20 coordinates, it will be reported as the pinch gesture or the zoom gesture.