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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#ifndef QQUICK3DPARTICLEEMITTER_H
#define QQUICK3DPARTICLEEMITTER_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 <QtQuick3D/private/qquick3dnode_p.h>
#include <QtQuick3DParticles/private/qquick3dparticledirection_p.h>
#include <QtQuick3DParticles/private/qquick3dparticlesystem_p.h>
#include <QtQuick3DParticles/private/qquick3dparticlemodelparticle_p.h>
#include <QtQuick3DParticles/private/qquick3dparticleabstractshape_p.h>
#include <QtQuick3DParticles/private/qquick3dparticleemitburst_p.h>
#include <QtQuick3DParticles/private/qquick3dparticledynamicburst_p.h>
QT_BEGIN_NAMESPACE
class Q_QUICK3DPARTICLES_EXPORT QQuick3DParticleEmitter : public QQuick3DNode
{
Q_OBJECT
Q_PROPERTY(QQuick3DParticleSystem *system READ system WRITE setSystem NOTIFY systemChanged)
Q_PROPERTY(QQmlListProperty<QQuick3DParticleEmitBurst> emitBursts READ emitBursts)
Q_PROPERTY(QQuick3DParticleDirection *velocity READ velocity WRITE setVelocity NOTIFY velocityChanged)
Q_PROPERTY(QQuick3DParticle *particle READ particle WRITE setParticle NOTIFY particleChanged)
Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged)
Q_PROPERTY(QQuick3DParticleAbstractShape *shape READ shape WRITE setShape NOTIFY shapeChanged)
Q_PROPERTY(float emitRate READ emitRate WRITE setEmitRate NOTIFY emitRateChanged)
Q_PROPERTY(int lifeSpan READ lifeSpan WRITE setLifeSpan NOTIFY lifeSpanChanged)
Q_PROPERTY(int lifeSpanVariation READ lifeSpanVariation WRITE setLifeSpanVariation NOTIFY lifeSpanVariationChanged)
Q_PROPERTY(float particleScale READ particleScale WRITE setParticleScale NOTIFY particleScaleChanged)
Q_PROPERTY(float particleEndScale READ particleEndScale WRITE setParticleEndScale NOTIFY particleEndScaleChanged)
Q_PROPERTY(float particleScaleVariation READ particleScaleVariation WRITE setParticleScaleVariation NOTIFY particleScaleVariationChanged)
Q_PROPERTY(float particleEndScaleVariation READ particleEndScaleVariation WRITE setParticleEndScaleVariation NOTIFY particleEndScaleVariationChanged)
Q_PROPERTY(QVector3D particleRotation READ particleRotation WRITE setParticleRotation NOTIFY particleRotationChanged)
Q_PROPERTY(QVector3D particleRotationVariation READ particleRotationVariation WRITE setParticleRotationVariation NOTIFY particleRotationVariationChanged)
Q_PROPERTY(QVector3D particleRotationVelocity READ particleRotationVelocity WRITE setParticleRotationVelocity NOTIFY particleRotationVelocityChanged)
Q_PROPERTY(QVector3D particleRotationVelocityVariation READ particleRotationVelocityVariation WRITE setParticleRotationVelocityVariation NOTIFY particleRotationVariationVelocityChanged)
Q_PROPERTY(float depthBias READ depthBias WRITE setDepthBias NOTIFY depthBiasChanged)
Q_PROPERTY(bool reversed READ reversed WRITE setReversed NOTIFY reversedChanged REVISION(6, 10))
Q_PROPERTY(EmitMode emitMode READ emitMode WRITE setEmitMode NOTIFY emitModeChanged REVISION(6, 10))
QML_NAMED_ELEMENT(ParticleEmitter3D)
QML_ADDED_IN_VERSION(6, 2)
public:
enum EmitMode { Default = 0, SurfaceNormal, SurfaceReflected };
Q_ENUM(EmitMode)
QQuick3DParticleEmitter(QQuick3DNode *parent = nullptr);
~QQuick3DParticleEmitter() override;
bool enabled() const;
QQuick3DParticleDirection *velocity() const;
QQuick3DParticleSystem *system() const;
float emitRate() const;
float particleScale() const;
float particleEndScale() const;
float particleScaleVariation() const;
float particleEndScaleVariation() const;
int lifeSpan() const;
int lifeSpanVariation() const;
QQuick3DParticle *particle() const;
QQuick3DParticleAbstractShape *shape() const;
QVector3D particleRotation() const;
QVector3D particleRotationVariation() const;
QVector3D particleRotationVelocity() const;
QVector3D particleRotationVelocityVariation() const;
float depthBias() const;
Q_REVISION(6, 10) bool reversed() const;
Q_REVISION(6, 10) EmitMode emitMode() const;
QQmlListProperty<QQuick3DParticleEmitBurst> emitBursts();
Q_INVOKABLE virtual void burst(int count);
Q_INVOKABLE virtual void burst(int count, int duration);
Q_INVOKABLE virtual void burst(int count, int duration, const QVector3D &position);
public Q_SLOTS:
void setEnabled(bool enabled);
void setVelocity(QQuick3DParticleDirection *velocity);
void setSystem(QQuick3DParticleSystem *system);
void setEmitRate(float emitRate);
void setParticleScale(float particleScale);
void setParticleEndScale(float particleEndScale);
void setParticleScaleVariation(float particleScaleVariation);
void setParticleEndScaleVariation(float particleEndScaleVariation);
void setLifeSpan(int lifeSpan);
void setLifeSpanVariation(int lifeSpanVariation);
void setParticle(QQuick3DParticle *particle);
void setShape(QQuick3DParticleAbstractShape *shape);
void setParticleRotation(const QVector3D &particleRotation);
void setParticleRotationVariation(const QVector3D &particleRotationVariation);
void setParticleRotationVelocity(const QVector3D &particleRotationVelocity);
void setParticleRotationVelocityVariation(const QVector3D &particleRotationVelocityVariation);
void setDepthBias(float bias);
Q_REVISION(6, 10) void setReversed(bool reversed);
Q_REVISION(6, 10) void setEmitMode(EmitMode mode);
Q_SIGNALS:
void velocityChanged();
void systemChanged();
void emitRateChanged();
void particleScaleChanged();
void particleEndScaleChanged();
void particleScaleVariationChanged();
void particleEndScaleVariationChanged();
void lifeSpanChanged();
void lifeSpanVariationChanged();
void particleChanged();
void shapeChanged();
void particleRotationChanged();
void particleRotationVariationChanged();
void particleRotationVelocityChanged();
void particleRotationVariationVelocityChanged();
void enabledChanged();
void depthBiasChanged();
Q_REVISION(6, 10) void reversedChanged();
Q_REVISION(6, 10) void emitModeChanged();
protected:
friend class QQuick3DParticleSystem;
friend class QQuick3DParticleEmitBurst;
friend class QQuick3DParticleTrailEmitter;
void componentComplete() override;
void registerEmitBurst(QQuick3DParticleEmitBurst *emitBurst);
void unRegisterEmitBurst(QQuick3DParticleEmitBurst *emitBurst);
void generateEmitBursts();
void emitParticle(QQuick3DParticle *particle, float startTime, const QMatrix4x4 &transform, const QQuaternion &parentRotation, const QVector3D ¢erPos, int index = -1,
const QVector3D &velocity = QVector3D(), const QVector3D &normal = QVector3D());
void emitParticles();
void emitActivationNodeParticles(QQuick3DParticleModelBlendParticle *particle);
void emitParticlesBurst(const QQuick3DParticleEmitBurstData &burst);
int getEmitAmount();
int getEmitAmountFromDynamicBursts(int triggerType = 0);
void reset();
// EmitBursts - list handling
void appendEmitBurst(QQuick3DParticleEmitBurst *);
qsizetype emitBurstCount() const;
QQuick3DParticleEmitBurst *emitBurst(qsizetype) const;
void clearEmitBursts();
void replaceEmitBurst(qsizetype, QQuick3DParticleEmitBurst *);
void removeLastEmitBurst();
// EmitBursts - static
static void appendEmitBurst(QQmlListProperty<QQuick3DParticleEmitBurst> *, QQuick3DParticleEmitBurst *);
static qsizetype emitBurstCount(QQmlListProperty<QQuick3DParticleEmitBurst> *);
static QQuick3DParticleEmitBurst *emitBurst(QQmlListProperty<QQuick3DParticleEmitBurst> *, qsizetype);
static void clearEmitBursts(QQmlListProperty<QQuick3DParticleEmitBurst> *);
static void replaceEmitBurst(QQmlListProperty<QQuick3DParticleEmitBurst> *, qsizetype, QQuick3DParticleEmitBurst *);
static void removeLastEmitBurst(QQmlListProperty<QQuick3DParticleEmitBurst> *);
private:
struct BurstEmitData
{
int startTime;
int endTime;
int emitAmount;
int emitCounter = 0;
int prevBurstTime;
};
QQuick3DParticleDirection *m_velocity = nullptr;
QQuick3DParticleSystem *m_system = nullptr;
float m_emitRate = 0.0f;
// Time in ms when emitting last time happened
int m_prevEmitTime = 0;
// Time in ms when dynamic burst last time happened
int m_prevBurstTime = 0;
float m_particleScale = 1.0f;
float m_particleEndScale = -1.0f;
float m_particleScaleVariation = 0.0f;
float m_particleEndScaleVariation = -1.0f;
int m_lifeSpan = 1000;
int m_lifeSpanVariation = 0;
float m_unemittedF = 0.0f;
float m_depthBias = 0.0f;
QQuick3DParticle *m_particle = nullptr;
QQuick3DParticleAbstractShape *m_shape = nullptr;
QVector3D m_particleRotation;
QVector3D m_particleRotationVariation;
QVector3D m_particleRotationVelocity;
QVector3D m_particleRotationVelocityVariation;
bool m_enabled = true;
const QQuick3DParticleData m_clearData = {};
bool m_burstGenerated = false;
QQuick3DNode *m_systemSharedParent = nullptr;
// This list contains all emit bursts (both QQuick3DParticleEmitBurst and QQuick3DParticleDynamicBurst)
QList<QQuick3DParticleEmitBurst *> m_emitBursts;
QList<BurstEmitData> m_burstEmitData;
bool m_reversed = false;
EmitMode m_emitMode = EmitMode::Default;
};
QT_END_NAMESPACE
#endif // QQUICK3DPARTICLEEMITTER_H
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