- Qt 6.6
- Qt Quick 3D
- Qt Quick 3D Examples and Tutorials
- Qt Quick 3D - Particles 3D Testbed Example
- Qt Quick 3D | Commercial or GPLv3

# 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]
         }
     }