const float MINIMUM_MOTION_DISTANCE_BEFORE_PAN( 15.0f );
const float MINIMUM_MOTION_DISTANCE_BEFORE_PAN_SQUARED( MINIMUM_MOTION_DISTANCE_BEFORE_PAN * MINIMUM_MOTION_DISTANCE_BEFORE_PAN );
const float MINIMUM_MOTION_DISTANCE_TO_THRESHOLD_ADJUSTMENTS_RATIO( 2.0f / 3.0f );
-const unsigned long MAXIMUM_TIME_DIFF_ALLOWED( 500 );
const unsigned long MINIMUM_TIME_BEFORE_THRESHOLD_ADJUSTMENTS( 100 );
const unsigned int MINIMUM_MOTION_EVENTS_BEFORE_PAN(2);
} // unnamed namespace