qquick3dparticlegravity_p.h

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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#ifndef QQUICK3DPARTICLEGRAVITY_H
#define QQUICK3DPARTICLEGRAVITY_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include <QObject>
#include <QtQuick3DParticles/private/qquick3dparticleaffector_p.h>
 
QT_BEGIN_NAMESPACE
 
class Q_QUICK3DPARTICLES_EXPORT QQuick3DParticleGravity : public QQuick3DParticleAffector
{
    Q_OBJECT
    Q_PROPERTY(float magnitude READ magnitude WRITE setMagnitude NOTIFY magnitudeChanged)
    Q_PROPERTY(QVector3D direction READ direction WRITE setDirection NOTIFY directionChanged)
    QML_NAMED_ELEMENT(Gravity3D)
    QML_ADDED_IN_VERSION(6, 2)
 
public:
    QQuick3DParticleGravity(QQuick3DNode *parent = nullptr);
 
    float magnitude() const;
    const QVector3D &direction() const;
 
public Q_SLOTS:
    void setDirection(const QVector3D &direction);
    void setMagnitude(float magnitude);
 
Q_SIGNALS:
    void magnitudeChanged();
    void directionChanged();
 
protected:
    void affectParticle(const QQuick3DParticleData &sd, QQuick3DParticleDataCurrent *d, float time) override;
 
private:
    float m_magnitude = 100.0f;
    QVector3D m_direction = {0.0f, -1.0f, 0.0f};
    QVector3D m_directionNormalized = {0.0f, -1.0f, 0.0f};
};
 
QT_END_NAMESPACE
 
#endif // QQUICK3DPARTICLEGRAVITY_H