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// Copyright (C) 2026 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
import QtQuick
import QtQuick3D
import QtQuick3D.Particles3D
Item {
id: root
width: 200
height: 200
View3D {
anchors.fill: parent
PerspectiveCamera { z: 600 }
DirectionalLight {}
// A running system assigned to a non-default content layer. The
// particles it produces should end up on the same layer.
ParticleSystem3D {
id: psystem
objectName: "psystem"
layers: ContentLayer.Layer2
// Pre-warm so particles are alive from the first rendered frame.
startTime: 1000
SpriteParticle3D {
id: sprite
objectName: "sprite"
color: "red"
maxAmount: 100
}
ParticleEmitter3D {
particle: sprite
emitRate: 50
lifeSpan: 5000
velocity: VectorDirection3D {
direction: Qt.vector3d(0, 100, 0)
}
}
// A compound delegate; the delegate is user content, so the
// system leaves its layers alone. Each model keeps its own
// assignment: one explicit, one the default.
ModelParticle3D {
id: modelParticle
objectName: "modelParticle"
maxAmount: 20
delegate: Node {
Model {
source: "#Cube"
layers: ContentLayer.Layer5
scale: Qt.vector3d(0.1, 0.1, 0.1)
materials: PrincipledMaterial { baseColor: "blue" }
}
Model {
source: "#Sphere"
// No explicit layers; stays on the default layer.
scale: Qt.vector3d(0.1, 0.1, 0.1)
materials: PrincipledMaterial { baseColor: "green" }
}
}
}
ParticleEmitter3D {
particle: modelParticle
emitRate: 10
lifeSpan: 5000
velocity: VectorDirection3D {
direction: Qt.vector3d(0, 100, 0)
}
}
}
}
}