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Diffstat (limited to 'examples/mobile/qtbubblelevel/accelerometerfilter.cpp')
| -rw-r--r-- | examples/mobile/qtbubblelevel/accelerometerfilter.cpp | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/examples/mobile/qtbubblelevel/accelerometerfilter.cpp b/examples/mobile/qtbubblelevel/accelerometerfilter.cpp deleted file mode 100644 index c12f3e77..00000000 --- a/examples/mobile/qtbubblelevel/accelerometerfilter.cpp +++ /dev/null @@ -1,86 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal -** -** This file is part of the demonstration applications of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <math.h> -#include "accelerometerfilter.h" - -#define RADIANS_TO_DEGREES 57.2957795 - -AccelerometerFilter::AccelerometerFilter() - : x(0), y(0), z(0) -{ -} - -//! [0] -bool AccelerometerFilter::filter(QAccelerometerReading *reading) -{ - qreal rx = reading->x(); - qreal ry = reading->y(); - qreal rz = reading->z(); - - qreal divider = sqrt(rx * rx + ry * ry + rz * rz); - - // Lowpass factor -#ifdef Q_OS_SYMBIAN - float lowPassFactor = 0.10; -#else - float lowPassFactor = 0.05; -#endif - - // Calculate the axis angles in degrees and reduce the noise in sensor - // readings. - x += (acos(rx / divider) * RADIANS_TO_DEGREES - 90 - x) * lowPassFactor; - y += (acos(ry / divider) * RADIANS_TO_DEGREES - 90 - y) * lowPassFactor; - z += (acos(rz / divider) * RADIANS_TO_DEGREES - 90 - z) * lowPassFactor; - - // The orientations of the accelerometers are different between - // Symbian and Maemo devices so we use the different axes - // depending on the platform. -#if defined(Q_OS_SYMBIAN) - emit rotationChanged(-y); -#else - emit rotationChanged(x); -#endif - - // Don't store the reading in the sensor. - return false; -} -//! [0] |