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-rw-r--r--src/imports/particles/directedvector.cpp93
1 files changed, 0 insertions, 93 deletions
diff --git a/src/imports/particles/directedvector.cpp b/src/imports/particles/directedvector.cpp
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--- a/src/imports/particles/directedvector.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 "directedvector.h"
-#include "particleemitter.h"
-#include <cmath>
-#include <QDebug>
-
-QT_BEGIN_NAMESPACE
-DirectedVector::DirectedVector(QObject *parent) :
- VaryingVector(parent)
- , m_targetX(0)
- , m_targetY(0)
- , m_targetVariation(0)
- , m_proportionalMagnitude(false)
- , m_magnitude(0)
- , m_magnitudeVariation(0)
- , m_targetItem(0)
-{
-}
-
-const QPointF &DirectedVector::sample(const QPointF &from)
-{
- //###This approach loses interpolating the last position of the target (like we could with the emitter) is it worthwhile?
- qreal targetX;
- qreal targetY;
- if(m_targetItem){
- ParticleEmitter* parentEmitter = qobject_cast<ParticleEmitter*>(parent());
- targetX = m_targetItem->width()/2;
- targetY = m_targetItem->height()/2;
- if(!parentEmitter){
- qWarning() << "Directed vector is not a child of the emitter. Mapping of target item coordinates may fail.";
- targetX += m_targetItem->x();
- targetY += m_targetItem->y();
- }else{
- m_ret = parentEmitter->mapFromItem(m_targetItem, QPointF(targetX, targetY));
- targetX = m_ret.x();
- targetY = m_ret.y();
- }
- }else{
- targetX = m_targetX;
- targetY = m_targetY;
- }
- targetX += 0 - from.x() - m_targetVariation + rand()/(float)RAND_MAX * m_targetVariation*2;
- targetY += 0 - from.y() - m_targetVariation + rand()/(float)RAND_MAX * m_targetVariation*2;
- qreal theta = atan2(targetY, targetX);
- qreal mag = m_magnitude + rand()/(float)RAND_MAX * m_magnitudeVariation * 2 - m_magnitudeVariation;
- if(m_proportionalMagnitude)
- mag *= sqrt(targetX * targetX + targetY * targetY);
- m_ret.setX(mag * cos(theta));
- m_ret.setY(mag * sin(theta));
- return m_ret;
-}
-
-QT_END_NAMESPACE