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** This file is part of the QtSensors module of the Qt Toolkit.
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import QtQuick 2.0
//! [0]
import QtMobility.sensors 1.2
//! [0]


Rectangle {
    width: 360
    height: 360
    id: mainPage

//! [1]
    Accelerometer {
        id: accel
//! [1]
//! [3]
        active:true
//! [3]
        property real accelY;
        property real accelX;
    }

//! [2]
    Timer {
         interval: 500; running: true; repeat: true

         property real xdiff;
         property real ydiff;

         onTriggered: {
             xdiff = accel.reading.x - accel.accelX;
             ydiff = accel.reading.y - accel.accelY;

             if (Math.abs(xdiff) > 0.3) {
                 accel.accelX = -accel.reading.x
             }
             if (Math.abs(ydiff) > 0.3) {
                 accel.accelY = accel.reading.y
             }
         }
     }
//! [2]

    Image {
        id: bubble
        source: "images/Bluebubble2.png"
        property real centerX: parent.width / 2
        property real centerY: parent.height / 2;
        property real bubbleCenter: bubble.width / 2

        function calX() {
            var newX = centerX + accel.accelX  / -1 * centerX

            if ((newX - bubbleCenter) < 0) {
                return 0
            }
            else if ((newX + bubbleCenter) > parent.width) {
                return parent.width - 2 * bubbleCenter
            }
            return newX - bubbleCenter;
        }
        x: calX();

        function calY() {
            var newY = centerY + accel.accelY / -1 * centerY

            if ((newY - bubbleCenter) < 0) {
                return 0
            }
            else if ((newY + bubbleCenter) > parent.height) {
                return parent.height - 2 * bubbleCenter
            }
            return newY - bubbleCenter;
        }
        y: calY();

        smooth: true

        Behavior on y {
            SmoothedAnimation {
                easing.type: Easing.Linear
                duration: 2500
            }
        }
        Behavior on x {
            SmoothedAnimation {
                easing.type: Easing.Linear
                duration: 2500
            }
        }
    }
}