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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#ifndef QQUICK3DPARTICLELINEPARTICLE_H
#define QQUICK3DPARTICLELINEPARTICLE_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 <QtQuick3DParticles/private/qquick3dparticlespriteparticle_p.h>
QT_BEGIN_NAMESPACE
class Q_QUICK3DPARTICLES_EXPORT QQuick3DParticleLineParticle : public QQuick3DParticleSpriteParticle
{
Q_OBJECT
Q_PROPERTY(int segmentCount READ segmentCount WRITE setSegmentCount NOTIFY segmentCountChanged)
Q_PROPERTY(float alphaFade READ alphaFade WRITE setAlphaFade NOTIFY alphaFadeChanged)
Q_PROPERTY(float scaleMultiplier READ scaleMultiplier WRITE setScaleMultiplier NOTIFY scaleMultiplierChanged)
Q_PROPERTY(float texcoordMultiplier READ texcoordMultiplier WRITE setTexcoordMultiplier NOTIFY texcoordMultiplierChanged)
Q_PROPERTY(float length READ length WRITE setLength NOTIFY lengthChanged)
Q_PROPERTY(float lengthVariation READ lengthVariation WRITE setLengthVariation NOTIFY lengthVariationChanged)
Q_PROPERTY(float lengthDeltaMin READ lengthDeltaMin WRITE setLengthDeltaMin NOTIFY lengthDeltaMinChanged)
Q_PROPERTY(int eolFadeOutDuration READ eolFadeOutDuration WRITE setEolFadeOutDuration NOTIFY eolFadeOutDurationChanged)
Q_PROPERTY(TexcoordMode texcoordMode READ texcoordMode WRITE setTexcoordMode NOTIFY texcoordModeChanged)
QML_NAMED_ELEMENT(LineParticle3D)
QML_ADDED_IN_VERSION(6, 4)
public:
enum TexcoordMode
{
Absolute,
Relative,
Fill,
};
Q_ENUM(TexcoordMode)
QQuick3DParticleLineParticle(QQuick3DNode *parent = nullptr);
~QQuick3DParticleLineParticle() override;
int segmentCount() const;
float alphaFade() const;
float scaleMultiplier() const;
float texcoordMultiplier() const;
float length() const;
float lengthVariation() const;
float lengthDeltaMin() const;
int eolFadeOutDuration() const;
TexcoordMode texcoordMode() const;
public Q_SLOTS:
void setSegmentCount(int count);
void setAlphaFade(float fade);
void setScaleMultiplier(float multiplier);
void setTexcoordMultiplier(float multiplier);
void setLength(float length);
void setLengthVariation(float length);
void setLengthDeltaMin(float min);
void setEolFadeOutDuration(int duration);
void setTexcoordMode(QQuick3DParticleLineParticle::TexcoordMode mode);
Q_SIGNALS:
void segmentCountChanged();
void alphaFadeChanged();
void scaleMultiplierChanged();
void texcoordMultiplierChanged();
void lengthChanged();
void lengthVariationChanged();
void lengthDeltaMinChanged();
void eolFadeOutDurationChanged();
void texcoordModeChanged();
private:
struct LineDataHeader
{
int emitterIndex = -1;
int pointCount = 0;
int currentIndex = 0;
float length = 0.0f;
};
struct LineData
{
QVector3D position;
QVector3D normal;
QVector4D color;
QVector3D tangent;
QVector3D binormal;
float size = 0.0f;
float length = 0.0f;
};
struct FadeOutLineData
{
int emitterIndex;
SpriteParticleData endPoint;
LineDataHeader header;
QVector<LineData> lineData;
float beginTime;
float endTime;
float timeFactor;
};
friend class QQuick3DParticleSystem;
class LineParticleUpdateNode : public ParticleUpdateNode
{
public:
LineParticleUpdateNode(QQuick3DNode *parent = nullptr)
: ParticleUpdateNode(parent)
{
}
QSSGRenderGraphObject *updateSpatialNode(QSSGRenderGraphObject *node) override;
};
void updateLineBuffer(LineParticleUpdateNode *updateNode, QSSGRenderGraphObject *node);
QSSGRenderGraphObject *updateLineNode(QSSGRenderGraphObject *node);
void handleSegmentCountChanged();
void updateLineSegment(int particleIndex);
void clearSegment(int particleIndex);
void handleMaxAmountChanged(int amount) override;
void handleSystemChanged(QQuick3DParticleSystem *system) override;
void reset() override;
void commitParticles(float time) override;
int nextCurrentIndex(const QQuick3DParticleEmitter *emitter) override;
void saveLineSegment(int particleIndex, float time);
void setParticleData(int particleIndex,
const QVector3D &position,
const QVector3D &rotation,
const QVector4D &color,
float size, float age,
float animationFrame) override;
void resetParticleData(int particleIndex) override;
QVector<LineDataHeader> m_lineHeaderData;
QVector<LineData> m_lineData;
QVector<FadeOutLineData> m_fadeOutData;
float m_alphaFade = 0.0f;
float m_scaleMultiplier = 1.0f;
float m_texcoordMultiplier = 1.0f;
float m_lengthDeltaMin = 10.0f;
float m_length = -1.0f;
float m_lengthVariation = 0.0f;
int m_segmentCount = 1;
int m_eolFadeOutDuration = 0;
TexcoordMode m_texcoordMode = TexcoordMode::Absolute;
};
QT_END_NAMESPACE
#endif
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