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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef ATTRACTORAFFECTOR_H
#define ATTRACTORAFFECTOR_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 "qquickparticleaffector_p.h"
QT_BEGIN_NAMESPACE
class Q_QUICKPARTICLES_EXPORT QQuickAttractorAffector : public QQuickParticleAffector
{
Q_OBJECT
Q_PROPERTY(qreal strength READ strength WRITE setStrength NOTIFY strengthChanged)
Q_PROPERTY(qreal pointX READ pointX WRITE setPointX NOTIFY pointXChanged)
Q_PROPERTY(qreal pointY READ pointY WRITE setPointY NOTIFY pointYChanged)
Q_PROPERTY(AffectableParameters affectedParameter READ affectedParameter WRITE setAffectedParameter NOTIFY affectedParameterChanged)
Q_PROPERTY(Proportion proportionalToDistance READ proportionalToDistance WRITE setProportionalToDistance NOTIFY proportionalToDistanceChanged)
QML_NAMED_ELEMENT(Attractor)
QML_ADDED_IN_VERSION(2, 0)
public:
enum Proportion{
Constant,
Linear,
Quadratic,
InverseLinear,
InverseQuadratic
};
Q_ENUM(Proportion)
enum AffectableParameters {
Position,
Velocity,
Acceleration
};
Q_ENUM(AffectableParameters)
explicit QQuickAttractorAffector(QQuickItem *parent = nullptr);
qreal strength() const
{
return m_strength;
}
qreal pointX() const
{
return m_x;
}
qreal pointY() const
{
return m_y;
}
AffectableParameters affectedParameter() const
{
return m_physics;
}
Proportion proportionalToDistance() const
{
return m_proportionalToDistance;
}
Q_SIGNALS:
void strengthChanged(qreal arg);
void pointXChanged(qreal arg);
void pointYChanged(qreal arg);
void affectedParameterChanged(AffectableParameters arg);
void proportionalToDistanceChanged(Proportion arg);
public Q_SLOTS:
void setStrength(qreal arg)
{
if (m_strength != arg) {
m_strength = arg;
Q_EMIT strengthChanged(arg);
}
}
void setPointX(qreal arg)
{
if (m_x != arg) {
m_x = arg;
Q_EMIT pointXChanged(arg);
}
}
void setPointY(qreal arg)
{
if (m_y != arg) {
m_y = arg;
Q_EMIT pointYChanged(arg);
}
}
void setAffectedParameter(AffectableParameters arg)
{
if (m_physics != arg) {
m_physics = arg;
Q_EMIT affectedParameterChanged(arg);
}
}
void setProportionalToDistance(Proportion arg)
{
if (m_proportionalToDistance != arg) {
m_proportionalToDistance = arg;
Q_EMIT proportionalToDistanceChanged(arg);
}
}
protected:
bool affectParticle(QQuickParticleData *d, qreal dt) override;
private:
qreal m_strength;
qreal m_x;
qreal m_y;
AffectableParameters m_physics;
Proportion m_proportionalToDistance;
};
QT_END_NAMESPACE
#endif // ATTRACTORAFFECTOR_H
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