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-rw-r--r--src/imports/particles/gravityaffector.cpp77
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diff --git a/src/imports/particles/gravityaffector.cpp b/src/imports/particles/gravityaffector.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the Declarative module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
-** 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, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "gravityaffector.h"
-#include <cmath>
-QT_BEGIN_NAMESPACE
-const qreal CONV = 0.017453292520444443;
-GravityAffector::GravityAffector(QSGItem *parent) :
- ParticleAffector(parent), m_acceleration(-10), m_angle(90), m_xAcc(0), m_yAcc(0)
-{
- connect(this, SIGNAL(accelerationChanged(qreal)),
- this, SLOT(recalc()));
- connect(this, SIGNAL(angleChanged(qreal)),
- this, SLOT(recalc()));
- recalc();
-}
-
-void GravityAffector::recalc()
-{
- qreal theta = m_angle * CONV;
- m_xAcc = m_acceleration * cos(theta);
- m_yAcc = m_acceleration * sin(theta);
-}
-
-bool GravityAffector::affectParticle(ParticleData *d, qreal dt)
-{
- Q_UNUSED(dt);
- bool changed = false;
- if(d->pv.ax != m_xAcc){
- d->setInstantaneousAX(m_xAcc);
- changed = true;
- }
- if(d->pv.ay != m_yAcc){
- d->setInstantaneousAY(m_yAcc);
- changed = true;
- }
- return changed;
-}
-QT_END_NAMESPACE