intercept scrolling
<p>I want to implement a menu like Angry-birds's menu.
I want to do it with open-gl, moving the camera. The problem is that I'm not able to recognise
when the users do the horizontal movement with the finger…</p>

<p>i tryed this but doesn't work..</p>

<pre><code>if(event.type == TouchEvent.TOUCH_DRAGGED) {
            float dx = x - mPreviousX;
            float dy = y - mPreviousY;

            // reverse direction of rotation above the mid-line
            if (dx &gt; 0) {
              guiCam.position.x += 250;
            }

            // reverse direction of rotation to left of the mid-line
            if (dx &lt; 0) {
              guiCam.position.x -= 250;
            }

        }

        mPreviousX = x;
        mPreviousY = y;
</code></pre>

<p>can you help me? thanks so much!</p>
