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diff --git a/src/declarative/particles/qquickturbulence.cpp b/src/declarative/particles/qquickturbulence.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.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** 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.
-**
-** 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.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qquickturbulence_p.h"
-#include "qquickparticlepainter_p.h"//TODO: Why was this needed again?
-#include <cmath>
-#include <cstdlib>
-#include <QDebug>
-QT_BEGIN_NAMESPACE
-
-/*!
- \qmlclass Turbulence QQuickTurbulenceAffector
- \inqmlmodule QtQuick.Particles 2
- \inherits Affector
- \brief Turbulence provides fluid like forces based on a noise image.
-
- The Turbulence Element scales the noise source over the area it affects,
- and uses the curl of that source to generate force vectors.
-
- Turbulence requires a fixed size. Unlike other affectors, a 0x0 Turbulence element
- will affect no particles.
-
- The source should be relatively smooth black and white noise, such as perlin noise.
-*/
-/*!
- \qmlproperty real QtQuick.Particles2::Turbulence::strength
-
- The magnitude of the velocity vector at any point varies between zero and
- the square root of two. It will then be multiplied by strength to get the
- velocity per second for the particles affected by the turbulence.
-*/
-/*!
- \qmlproperty url QtQuick.Particles2::Turbulence::noiseSource
-
- The source image to generate the turbulence from. It will be scaled to the size of the element,
- so equal or larger sizes will give better results. Tweaking this image is the only way to tweak
- behavior such as where vortices are or how many exist.
-
- The source should be a relatively smooth black and white noise image, such as perlin noise.
- A default image will be used if none is provided.
-*/
-
-QQuickTurbulenceAffector::QQuickTurbulenceAffector(QQuickItem *parent) :
- QQuickParticleAffector(parent),
- m_strength(10), m_lastT(0), m_gridSize(0), m_field(0), m_vectorField(0), m_inited(false)
-{
-}
-
-void QQuickTurbulenceAffector::geometryChanged(const QRectF &, const QRectF &)
-{
- initializeGrid();
-}
-
-QQuickTurbulenceAffector::~QQuickTurbulenceAffector()
-{
- if (m_field) {
- for (int i=0; i<m_gridSize; i++)
- free(m_field[i]);
- free(m_field);
- }
- if (m_vectorField) {
- for (int i=0; i<m_gridSize; i++)
- free(m_vectorField[i]);
- free(m_vectorField);
- }
-}
-
-void QQuickTurbulenceAffector::initializeGrid()
-{
- if (!m_inited)
- return;
-
- int arg = qMax(width(), height());
- if (m_gridSize != arg) {
- if (m_field){ //deallocate and then reallocate grid
- for (int i=0; i<m_gridSize; i++)
- free(m_field[i]);
- free(m_field);
- m_system = 0;
- }
- if (m_vectorField) {
- for (int i=0; i<m_gridSize; i++)
- free(m_vectorField[i]);
- free(m_vectorField);
- }
- m_gridSize = arg;
- }
-
- m_field = (qreal**)malloc(m_gridSize * sizeof(qreal*));
- for (int i=0; i<m_gridSize; i++)
- m_field[i] = (qreal*)malloc(m_gridSize * sizeof(qreal));
- m_vectorField = (QPointF**)malloc(m_gridSize * sizeof(QPointF*));
- for (int i=0; i<m_gridSize; i++)
- m_vectorField[i] = (QPointF*)malloc(m_gridSize * sizeof(QPointF));
-
- QImage image;
- if (!m_noiseSource.isEmpty())
- image = QImage(m_noiseSource.toLocalFile()).scaled(QSize(m_gridSize, m_gridSize));
- if (image.isNull())
- image = QImage(QStringLiteral(":particleresources/noise.png")).scaled(QSize(m_gridSize, m_gridSize));
-
- for (int i=0; i<m_gridSize; i++)
- for (int j=0; j<m_gridSize; j++)
- m_field[i][j] = qRed(image.pixel(QPoint(i,j)));//Red as proxy for Value
- for (int i=0; i<m_gridSize; i++){
- for (int j=0; j<m_gridSize; j++){
- m_vectorField[i][j].setX(boundsRespectingField(i,j) - boundsRespectingField(i,j-1));
- m_vectorField[i][j].setY(boundsRespectingField(i-1,j) - boundsRespectingField(i,j));
- }
- }
-}
-
-qreal QQuickTurbulenceAffector::boundsRespectingField(int x, int y)
-{
- if (x < 0)
- x = 0;
- if (x >= m_gridSize)
- x = m_gridSize - 1;
- if (y < 0)
- y = 0;
- if (y >= m_gridSize)
- y = m_gridSize - 1;
- return m_field[x][y];
-}
-
-void QQuickTurbulenceAffector::ensureInit()
-{
- if (m_inited)
- return;
- m_inited = true;
- initializeGrid();
-}
-
-void QQuickTurbulenceAffector::affectSystem(qreal dt)
-{
- if (!m_system || !m_enabled)
- return;
- ensureInit();
- if (!m_gridSize)
- return;
-
- updateOffsets();//### Needed if an ancestor is transformed.
-
- QRect boundsRect(0,0,m_gridSize,m_gridSize);
- foreach (QQuickParticleGroupData *gd, m_system->groupData){
- if (!activeGroup(m_system->groupData.key(gd)))
- continue;
- foreach (QQuickParticleData *d, gd->data){
- if (!shouldAffect(d))
- continue;
- QPoint pos = (QPointF(d->curX(), d->curY()) - m_offset).toPoint();
- if (!boundsRect.contains(pos,true))//Need to redo bounds checking due to quantization.
- continue;
- qreal fx = 0.0;
- qreal fy = 0.0;
- fx += m_vectorField[pos.x()][pos.y()].x() * m_strength;
- fy += m_vectorField[pos.x()][pos.y()].y() * m_strength;
- if (fx || fy){
- d->setInstantaneousVX(d->curVX()+ fx * dt);
- d->setInstantaneousVY(d->curVY()+ fy * dt);
- postAffect(d);
- }
- }
- }
-}
-
-QT_END_NAMESPACE
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