Qt Quick 3D - Particles 3D Testbed Example

 // Copyright (C) 2023 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

 import QtQuick
 import QtQuick3D
 import QtQuick3D.Particles3D

 Item {
     id: mainWindow
     anchors.fill: parent

     View3D {
         anchors.fill: parent

         environment: SceneEnvironment {
             clearColor: "#000000"
             backgroundMode: SceneEnvironment.Color
             antialiasingMode: AppSettings.antialiasingMode
             antialiasingQuality: AppSettings.antialiasingQuality
         }

         PerspectiveCamera {
             id: camera
             property real cameraAnim: 0
             NumberAnimation {
                 target: camera
                 property: "cameraAnim"
                 running: true
                 loops: Animation.Infinite
                 from: 0
                 to: 2 * Math.PI
                 duration: 40000
             }
             position: Qt.vector3d(Math.sin(cameraAnim * 3.0) * 400, 200, 600 + Math.cos(cameraAnim) * 200)
             eulerRotation: Qt.vector3d(-20, Math.sin(cameraAnim * 3.0) * 30, 0)
         }

         PointLight {
             position: Qt.vector3d(0, 400, 0)
             brightness: 10
             ambientColor: Qt.rgba(0.3, 0.3, 0.3, 1.0)
         }

         // Background stars
         ParticleSystem3D {
             id: psystem2
             startTime: 10000
             SpriteParticle3D {
                 id: particle3
                 sprite: Texture {
                     source: "images/star3.png"
                 }
                 maxAmount: 1000
                 color: "#40ffffff"
                 colorVariation: Qt.vector4d(0.1, 0.1, 0.1, 0.2)
                 fadeInEffect: SpriteParticle3D.FadeScale
                 fadeInDuration: 2000
                 fadeOutEffect: SpriteParticle3D.FadeScale
                 fadeOutDuration: 2000
                 alignMode: SpriteParticle3D.AlignTowardsTarget
                 alignTargetPosition: camera.position
             }
             ParticleEmitter3D {
                 particle: particle3
                 shape: ParticleShape3D {
                     fill: true
                     type: ParticleShape3D.Sphere
                 }
                 position: Qt.vector3d(0, -500, -400)
                 scale: Qt.vector3d(30, 30, 15)
                 emitRate: 100
                 lifeSpan: 10000
                 particleRotationVariation: Qt.vector3d(0, 0, 180)
                 particleRotationVelocityVariation: Qt.vector3d(0, 0, 50)
                 particleScale: 5.0
                 particleScaleVariation: 3.0
                 velocity: VectorDirection3D {
                     direction: Qt.vector3d(0, 0, 0)
                     directionVariation: Qt.vector3d(10, 10, 10)
                 }
             }
         }

         ParticleSystem3D {
             id: psystem
             running: false
             SequentialAnimation on time {
                 loops: Animation.Infinite
                 PauseAnimation {
                     duration: 1500
                 }
                 NumberAnimation {
                     to: 5000
                     duration: 5000
                     easing.type: Easing.InOutQuad
                 }
                 PauseAnimation {
                     duration: 1500
                 }
                 NumberAnimation {
                     to: 0
                     duration: 5000
                     easing.type: Easing.InOutQuad
                 }
             }

             SpriteParticle3D {
                 id: particle1
                 sprite: Texture {
                     source: "images/star3.png"
                 }
                 maxAmount: 4096
                 colorTable: Texture {
                     source: "images/color_table5.png"
                 }
                 color: "#d0ffffff"
                 colorVariation: Qt.vector4d(0.0, 0.0, 0.0, 0.4)
                 particleScale: 15.0
                 billboard: true
                 fadeInEffect: SpriteParticle3D.FadeNone
                 fadeOutEffect: SpriteParticle3D.FadeNone
             }

             SpriteParticle3D {
                 id: particle2
                 sprite: Texture {
                     source: "images/dot.png"
                 }
                 maxAmount: 4096
                 colorTable: Texture {
                     source: "images/color_table4.png"
                 }
                 color: "#60ffffff"
                 colorVariation: Qt.vector4d(0.0, 0.0, 0.0, 0.4)
                 particleScale: 6.0
                 billboard: true
                 fadeInEffect: SpriteParticle3D.FadeNone
                 fadeOutEffect: SpriteParticle3D.FadeNone
             }

             ParticleEmitter3D {
                 particle: particle1
                 scale: Qt.vector3d(5.0, 5.0, 5.0)
                 shape: ParticleCustomShape3D {
                     source: "data/qt_logo_in_4096.cbor"
                 }
                 lifeSpan: 5001
                 emitBursts: [
                     EmitBurst3D {
                         time: 0
                         amount: 4096
                     }
                 ]
                 depthBias: -200
                 particleRotationVariation: Qt.vector3d(0, 0, 180)
                 particleRotationVelocityVariation: Qt.vector3d(80, 80, 80)
                 particleScaleVariation: 0.5
                 particleEndScale: 4.0
                 particleEndScaleVariation: 2.0
                 velocity: VectorDirection3D {
                     direction: Qt.vector3d(-150, 100, 0)
                     directionVariation: Qt.vector3d(150, 100, 100)
                 }
             }

             ParticleEmitter3D {
                 particle: particle2
                 scale: Qt.vector3d(5.0, 5.0, 5.0)
                 shape: ParticleCustomShape3D {
                     source: "data/qt_logo_out_4096.cbor"
                 }
                 lifeSpan: 5001
                 emitBursts: [
                     EmitBurst3D {
                         time: 0
                         amount: 4096
                     }
                 ]
                 particleScale: 2.0
                 particleEndScale: 1.0
                 particleScaleVariation: 1.5
                 particleEndScaleVariation: 0.8
                 velocity: VectorDirection3D {
                     direction: Qt.vector3d(0, 200, 0)
                     directionVariation: Qt.vector3d(50, 50, 50)
                 }
             }

             Attractor3D {
                 particles: [particle1]
                 position: Qt.vector3d(-200, 0, 0)
                 scale: Qt.vector3d(4.0, 4.0, 4.0)
                 shape: ParticleCustomShape3D {
                     source: "data/heart_4096.cbor"
                     randomizeData: true
                 }
                 duration: 4000
                 durationVariation: 1000
             }
             Attractor3D {
                 particles: [particle2]
                 position: Qt.vector3d(200, 0, 0)
                 scale: Qt.vector3d(6.0, 6.0, 6.0)
                 shape: ParticleCustomShape3D {
                     source: "data/qt_logo_in_4096.cbor"
                 }
                 duration: 4000
                 durationVariation: 1000
             }
         }
     }

     LoggingView {
         anchors.bottom: parent.bottom
         particleSystems: [psystem, psystem2]
     }
 }