/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtSensors module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
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** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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****************************************************************************/


import QtQuick 2.1
import QtQuick.Controls 1.0

//! [0]
import QtSensors 5.0
//! [0]


ApplicationWindow {
    title: "Accelerate Bubble"
    id: mainWindow
    width: 320
    height: 480
    visible: true


//! [1]
    Accelerometer {
        id: accel
        dataRate: 100
//! [1]
//! [2]
        active:true
//! [2]

//! [3]
        onReadingChanged: {
            var newX = (bubble.x + calcRoll(accel.reading.x, accel.reading.y, accel.reading.z) * .1)
            var newY = (bubble.y - calcPitch(accel.reading.x, accel.reading.y, accel.reading.z) * .1)

            if (isNaN(newX) || isNaN(newY))
                return;

            if (newX < 0)
                newX = 0

            if (newX > mainWindow.width - bubble.width)
                newX = mainWindow.width - bubble.width

            if (newY < 18)
                newY = 18

            if (newY > mainWindow.height - bubble.height)
                newY = mainWindow.height - bubble.height

                bubble.x = newX
                bubble.y = newY
        }
//! [3]
    }

    function calcPitch(x,y,z) {
        return -(Math.atan(y / Math.sqrt(x * x + z * z)) * 57.2957795);
    }
    function calcRoll(x,y,z) {
         return -(Math.atan(x / Math.sqrt(y * y + z * z)) * 57.2957795);
    }

    Image {
        id: bubble
        source: "content/Bluebubble.svg"
        smooth: true
        property real centerX: mainWindow.width / 2
        property real centerY: mainWindow.height / 2
        property real bubbleCenter: bubble.width / 2
        x: centerX - bubbleCenter
        y: centerY - bubbleCenter

        Behavior on y {
            SmoothedAnimation {
                easing.type: Easing.Linear
                duration: 100
            }
        }
        Behavior on x {
            SmoothedAnimation {
                easing.type: Easing.Linear
                duration: 100
            }
        }
    }
}
