LeapMotionListener.java

package com.github.codingricky.leapmotion;

import com.leapmotion.leap.Controller;  
import com.leapmotion.leap.Hand;  
import com.leapmotion.leap.Listener;

public class LeapMotionListener extends Listener {  
    private float x;

    @Override
    public void onFrame(Controller controller) {
        final Hand hand = controller.frame().hands().get(0);
        if (hand.palmPosition().isValid()) {
            x = hand.palmPosition().getX();
        } else {
            x = 0;
        }
    }

    public float getX() {
        return x;
    }
}