Qt Quick 3D - Particles 3D Testbed Example

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import QtQuick import QtQuick3D import QtQuick3D.Particles3D import QtQuick.Controls Item { id: mainWindow readonly property int burstCount: 300 readonly property int maxEmitterCount: 10 readonly property int trailEmitRate: 10 property var modelEmitters: [] property int modelEmittersAmount: 0 property var spriteEmitters: [] property int spriteEmittersAmount: 0 function createModelEmitter() { var newObject = modelEmitterComponent.createObject(psystem); modelEmitters.push(newObject); modelEmittersAmount = modelEmitters.length; } function createSpriteEmitter() { var newObject = spriteEmitterComponent.createObject(psystem); spriteEmitters.push(newObject); spriteEmittersAmount = spriteEmitters.length; } anchors.fill: parent Component.onCompleted: { createModelEmitter(); createSpriteEmitter(); } 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: modelEmitterComponent Model { source: "#Cylinder" materials: DefaultMaterial {} position: Qt.vector3d(Math.random() * 250 - 300, -150, 0) scale: Qt.vector3d(0.5, 0.1, 0.5) ParticleEmitter3D { system: psystem particle: particleWhite particleScaleVariation: 0.4 particleRotationVariation: Qt.vector3d(180, 180, 180) particleRotationVelocityVariation: Qt.vector3d(200, 200, 200); velocity: VectorDirection3D { direction: Qt.vector3d(0, 400, 0) directionVariation: Qt.vector3d(40, 40, 0) } emitRate: 2 lifeSpan: 4000 } } } Component { id: spriteEmitterComponent Model { source: "#Cylinder" materials: DefaultMaterial { diffuseColor: "#ffff00" } position: Qt.vector3d(Math.random() * 250 + 50, -150, 0) scale: Qt.vector3d(0.5, 0.1, 0.5) ParticleEmitter3D { system: psystem particle: particleSprite particleScaleVariation: 0.4 particleRotationVariation: Qt.vector3d(180, 180, 180) particleRotationVelocityVariation: Qt.vector3d(200, 200, 200); velocity: VectorDirection3D { direction: Qt.vector3d(0, 400, 0) directionVariation: Qt.vector3d(40, 40, 0) } emitRate: 2 lifeSpan: 4000 } } } ParticleSystem3D { id: psystem useRandomSeed: checkBoxRandomize.checked onTimeChanged: { if (time > 9500) psystem.paused = true; } // Particles ModelParticle3D { id: particleTrailModel delegate: particleComponent maxAmount: maxEmitterCount * 8 * trailEmitRate fadeInDuration: 200 fadeOutDuration: 500 color: "#808080" colorVariation: Qt.vector4d(0.2, 0.2, 0.2, 0.5) unifiedColorVariation: true } ModelParticle3D { id: particleWhite delegate: particleComponent maxAmount: maxEmitterCount * 8 color: "#ffffff" } ModelParticle3D { id: particleRed delegate: particleComponent maxAmount: burstCount * 3 color: "#ff0000" } SpriteParticle3D { id: particleSprite sprite: Texture { source: "images/star2.png" } maxAmount: maxEmitterCount * 8 color: "#ffff00" particleScale: 30.0 } SpriteParticle3D { id: particleTrailSprite sprite: Texture { source: "images/star2.png" } maxAmount: maxEmitterCount * 8 * trailEmitRate fadeInDuration: 200 fadeOutDuration: 500 color: "#999900" particleScale: 15.0 } // Emitters, one per particle TrailEmitter3D { id: modelTrailEmitter particle: particleTrailModel follow: particleWhite particleScale: 0.5 particleScaleVariation: 0.2 particleRotationVariation: Qt.vector3d(180, 180, 180) particleRotationVelocityVariation: Qt.vector3d(100, 100, 100); velocity: VectorDirection3D { directionVariation: Qt.vector3d(20, 20, 20) } emitRate: trailEmitRate lifeSpan: 1000 } TrailEmitter3D { id: spriteTrailEmitter particle: particleTrailSprite follow: particleSprite particleScaleVariation: 0.2 particleRotationVariation: Qt.vector3d(180, 180, 180) particleRotationVelocityVariation: Qt.vector3d(100, 100, 100); velocity: VectorDirection3D { directionVariation: Qt.vector3d(20, 20, 20) } emitRate: trailEmitRate 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 } } } 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: 10 } CustomLabel { text: "ParticleSystem time" opacity: timeSlider.sliderEnabled ? 1.0 : 0.4 } CustomSlider { id: timeSlider sliderValue: psystem.time sliderEnabled: psystem.paused fromValue: 0 toValue: 10000 onSliderValueChanged: psystem.setTime(sliderValue); } Item { width: 1 height: 10 } 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 { sliderValue: 0 sliderEnabled: !psystem.useRandomSeed fromValue: 0 toValue: 99 sliderStepSize: 1 onSliderValueChanged: psystem.setSeed(sliderValue); } Item { width: 1; height: 20 } CustomLabel { anchors.horizontalCenter: parent.horizontalCenter text: "Model Emitters: " + modelEmittersAmount } Item { width: 1; height: 5 } Row { spacing: 10 anchors.horizontalCenter: parent.horizontalCenter Button { text: qsTr("Add") font.pointSize: settings.fontSizeSmall enabled: modelEmittersAmount < 10 onClicked: createModelEmitter(); } Button { text: qsTr("Remove") font.pointSize: settings.fontSizeSmall enabled: modelEmittersAmount > 0 onClicked: { let instance = modelEmitters.pop(); instance.destroy(); modelEmittersAmount = modelEmitters.length; } } } Item { width: 1; height: 20 } CustomLabel { anchors.horizontalCenter: parent.horizontalCenter text: "Sprite Emitters: " + spriteEmittersAmount } Item { width: 1; height: 5 } Row { spacing: 10 anchors.horizontalCenter: parent.horizontalCenter Button { text: qsTr("Add") font.pointSize: settings.fontSizeSmall enabled: spriteEmittersAmount < 10 onClicked: createSpriteEmitter(); } Button { text: qsTr("Remove") font.pointSize: settings.fontSizeSmall enabled: spriteEmittersAmount > 0 onClicked: { let instance = spriteEmitters.pop(); instance.destroy(); spriteEmittersAmount = spriteEmitters.length; } } } } LoggingView { anchors.bottom: parent.bottom particleSystems: [psystem] } }