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| |
| #ifndef TURBULENCEAFFECTOR_H |
| #define TURBULENCEAFFECTOR_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" |
| #include <QQmlListProperty> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QQuickParticlePainter; |
| |
| class QQuickTurbulenceAffector : public QQuickParticleAffector |
| { |
| Q_OBJECT |
| Q_PROPERTY(qreal strength READ strength WRITE setStrength NOTIFY strengthChanged) |
| Q_PROPERTY(QUrl noiseSource READ noiseSource WRITE setNoiseSource NOTIFY noiseSourceChanged) |
| QML_NAMED_ELEMENT(Turbulence) |
| |
| public: |
| explicit QQuickTurbulenceAffector(QQuickItem *parent = 0); |
| ~QQuickTurbulenceAffector(); |
| void affectSystem(qreal dt) override; |
| |
| qreal strength() const |
| { |
| return m_strength; |
| } |
| |
| QUrl noiseSource() const |
| { |
| return m_noiseSource; |
| } |
| Q_SIGNALS: |
| |
| void strengthChanged(qreal arg); |
| |
| void noiseSourceChanged(QUrl arg); |
| |
| public Q_SLOTS: |
| |
| void setStrength(qreal arg) |
| { |
| if (m_strength != arg) { |
| m_strength = arg; |
| Q_EMIT strengthChanged(arg); |
| } |
| } |
| |
| void setNoiseSource(QUrl arg) |
| { |
| if (m_noiseSource != arg) { |
| m_noiseSource = arg; |
| Q_EMIT noiseSourceChanged(arg); |
| initializeGrid(); |
| } |
| } |
| |
| protected: |
| void geometryChanged(const QRectF &newGeometry, |
| const QRectF &oldGeometry) override; |
| private: |
| void ensureInit(); |
| void mapUpdate(); |
| void initializeGrid(); |
| qreal boundsRespectingField(int x, int y); |
| qreal m_strength; |
| qreal m_lastT; |
| int m_gridSize; |
| qreal** m_field; |
| QPointF** m_vectorField; |
| bool m_inited; |
| QUrl m_noiseSource; |
| }; |
| |
| QT_END_NAMESPACE |
| #endif // TURBULENCEAFFECTOR_H |