Qt Quick 3D - Particles 3D Testbed Example

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 import QtQuick
 import QtQuick3D
 import QtQuick3D.Particles3D
 import QtQuick.Controls

 Item {
     id: mainWindow

     property int burstCount: 300

     anchors.fill: parent

     View3D {
         id: view3D
         anchors.fill: parent
         camera: camera

         environment: SceneEnvironment {
             clearColor: "#202020"
             backgroundMode: SceneEnvironment.Color
             antialiasingMode: settings.antialiasingMode
             antialiasingQuality: settings.antialiasingQuality
         }

         PerspectiveCamera {
             id: camera
             position: Qt.vector3d(0, 100, 600)
         }

         PointLight {
             position: Qt.vector3d(0, 400, 100)
             brightness: 10
             ambientColor: Qt.rgba(0.3, 0.3, 0.3, 1.0)
         }

         // Model shared between particles
         Component {
             id: particleComponent
             Model {
                 source: "#Cube"
                 scale: Qt.vector3d(0.2, 0.2, 0.2)
                 materials: DefaultMaterial {
                 }
             }
         }

         Component {
             id: particleComponentSpark
             Model {
                 source: "#Rectangle"
                 scale: Qt.vector3d(0.1, 0.1, 0.0)
                 opacity: 0.5
                 materials: DefaultMaterial {
                     diffuseMap: Texture {
                         source: "images/star.png"
                     }
                 }
             }
         }

         ParticleSystem3D {
             id: psystem

             useRandomSeed: checkBoxRandomize.checked

             // Particles
             ModelParticle3D {
                 id: particleSpark
                 delegate: particleComponentSpark
                 maxAmount: 2000
                 fadeInDuration: 200
                 fadeOutDuration: 500
                 color: "#ffe000"
                 colorVariation: Qt.vector4d(0.2, 0.2, 0.0, 0.5)
             }
             ModelParticle3D {
                 id: particleWhite
                 delegate: particleComponent
                 maxAmount: 16
                 color: "#ffffff"
             }
             ModelParticle3D {
                 id: particleRed
                 delegate: particleComponent
                 maxAmount: burstCount * 3
                 color: "#ff0000"
             }

             // Emitters, one per particle
             ParticleEmitter3D {
                 particle: particleWhite
                 position: Qt.vector3d(0, -150, 0)
                 particleScaleVariation: 0.6
                 particleRotationVariation: Qt.vector3d(180, 180, 180)
                 particleRotationVelocityVariation: Qt.vector3d(200, 200, 200);
                 velocity: VectorDirection3D {
                     direction: Qt.vector3d(0, 400, 0)
                     directionVariation: Qt.vector3d(80, 40, 20)
                 }
                 emitRate: 4
                 lifeSpan: 4000
             }

             TrailEmitter3D {
                 id: sparkEmitter
                 particle: particleSpark
                 follow: particleWhite
                 particleScaleVariation: 0.5
                 particleRotationVariation: Qt.vector3d(0, 0, 180)
                 particleRotationVelocityVariation: Qt.vector3d(100, 100, 100);
                 velocity: VectorDirection3D {
                     directionVariation: Qt.vector3d(20, 20, 20)
                 }
                 emitRate: 100
                 lifeSpan: 1000
             }

             ParticleEmitter3D {
                 id: burstEmitter
                 particle: particleRed
                 scale: Qt.vector3d(0.5, 0.5, 0.5)
                 particleScale: 0.2
                 particleEndScale: 0.4
                 particleRotationVariation: Qt.vector3d(180, 180, 180)
                 particleRotationVelocityVariation: Qt.vector3d(200, 200, 200);
                 shape: ParticleShape3D {
                     type: ParticleShape3D.Sphere
                     fill: false
                 }
                 velocity: TargetDirection3D {
                     position: burstEmitter.position
                     magnitude: -4.0
                 }
                 lifeSpan: 1000
                 lifeSpanVariation: 500
             }

             Gravity3D {
                 direction: Qt.vector3d(0, 1, 0)
                 magnitude: -200
                 particles: [particleWhite]
             }
         }
     }

     MouseArea {
         anchors.fill: parent
         onClicked: {
             var pos = view3D.mapTo3DScene(Qt.vector3d(mouseX, mouseY, camera.z));
             burstEmitter.setPosition(pos);
             burstEmitter.burst(burstCount);
         }
     }

     SettingsView {
         Row {
             spacing: 10
             anchors.horizontalCenter: parent.horizontalCenter
             Button {
                 text: psystem.running ? qsTr("Stop") : qsTr("Start")
                 font.pointSize: settings.fontSizeSmall
                 onClicked: {
                     psystem.running = !psystem.running;
                 }
             }
             Button {
                 text: psystem.paused ? qsTr("Continue") : qsTr("Pause")
                 font.pointSize: settings.fontSizeSmall
                 enabled: psystem.running
                 onClicked: {
                     psystem.paused = !psystem.paused;
                 }
             }
         }
         Item {
             width: 1
             height: 40
         }
         CustomLabel {
             text: "ParticleSystem seed: " + psystem.seed
         }
         CustomCheckBox {
             id: checkBoxRandomize
             text: "Use random seed"
             checked: true
         }
         CustomLabel {
             text: "Custom seed"
             opacity: psystem.useRandomSeed ? 0.4 : 1.0
         }
         CustomSlider {
             id: sliderTimelineTime
             sliderValue: 0
             sliderEnabled: !psystem.useRandomSeed
             fromValue: 0
             toValue: 99
             sliderStepSize: 1
             onSliderValueChanged: psystem.setSeed(sliderValue);
         }
     }

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