forked from qt-creator/qt-creator
5fe74434c1
This tutorial explains how to create an app that uses Qt Sensors QML module to move an SVG image based on the changing accelerometer values. Change-Id: Id4d9c8b389c5b8ebb330c6dba2dee783a475ba17 Reviewed-by: Topi Reiniö <topi.reinio@digia.com> Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
119 lines
3.8 KiB
QML
119 lines
3.8 KiB
QML
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
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** of its contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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import QtQuick 2.1
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import QtQuick.Controls 1.0
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//! [sensorimport]
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import QtSensors 5.0
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//! [sensorimport]
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ApplicationWindow {
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title: "Accelerate Bubble"
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id: mainWindow
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width: 320
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height: 480
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visible: true
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Accelerometer {
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id: accel
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dataRate: 100
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active:true
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//! [readingchanged]
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onReadingChanged: {
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var newX = (bubble.x + calcRoll(accel.reading.x, accel.reading.y, accel.reading.z) * 0.1)
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var newY = (bubble.y - calcPitch(accel.reading.x, accel.reading.y, accel.reading.z) * 0.1)
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if (newX < 0)
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newX = 0
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if (newX > mainWindow.width - bubble.width)
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newX = mainWindow.width - bubble.width
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if (newY < 18)
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newY = 18
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if (newY > mainWindow.height - bubble.height)
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newY = mainWindow.height - bubble.height
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bubble.x = newX
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bubble.y = newY
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}
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//! [readingchanged]
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}
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//! [jsfunctions]
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function calcPitch(x, y, z) {
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return -(Math.atan(y / Math.sqrt(x * x + z * z)) * 57.2957795);
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}
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function calcRoll(x, y, z) {
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return -(Math.atan(x / Math.sqrt(y * y + z * z)) * 57.2957795);
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}
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//! [jsfunctions]
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Image {
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id: bubble
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source: "Bluebubble.svg"
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smooth: true
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property real centerX: mainWindow.width / 2
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property real centerY: mainWindow.height / 2;
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property real bubbleCenter: bubble.width / 2
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x: centerX - bubbleCenter
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y: centerY - bubbleCenter
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//! [smoothedanim]
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Behavior on y {
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SmoothedAnimation {
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easing.type: Easing.Linear
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duration: 100
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}
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}
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Behavior on x {
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SmoothedAnimation {
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easing.type: Easing.Linear
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duration: 100
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}
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}
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//! [smoothedanim]
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}
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}
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