/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples 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
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**     notice, this list of conditions and the following disclaimer.
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**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
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**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
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function printOrientation(orientation) {
    var orientationString;
    if (orientation == Orientation.Portrait) {
        orientationString = "Portrait";
    } else if (orientation == Orientation.Landscape) {
        orientationString = "Landscape";
    } else if (orientation == Orientation.PortraitInverted) {
        orientationString = "Portrait inverted";
    } else if (orientation == Orientation.LandscapeInverted) {
        orientationString = "Landscape inverted";
    } else {
        orientationString = "UnknownOrientation";
    }
    return orientationString;
}

function getAngle(orientation) {
    var angle;
    if (orientation == Orientation.Portrait) {
        angle = 0;
    } else if (orientation == Orientation.Landscape) {
        angle = 90;
    } else if (orientation == Orientation.PortraitInverted) {
        angle = 180;
    } else if (orientation == Orientation.LandscapeInverted) {
        angle = 270;
    } else {
        angle = 0;
    }
    return angle;
}

function parallel(firstOrientation, secondOrientation) {
    var difference = getAngle(firstOrientation) - getAngle(secondOrientation)
    return difference % 180 == 0;
}

function calculateGravityPoint(firstOrientation, secondOrientation) {
    var position = Qt.point(0, 0);
    var difference = getAngle(firstOrientation) - getAngle(secondOrientation)
    if (difference < 0) {
        difference = 360 + difference;
    }
    if (difference == 0) {
        position = Qt.point(0, -10);
    } else if (difference == 90) {
        position = Qt.point(-10, 0);
    } else if (difference == 180) {
        position = Qt.point(0, 1000);
    } else if (difference == 270) {
        position = Qt.point(1000, 0);
    }
    return position;
}