Qt Quick 3D - Particles 3D Testbed Example

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import QtQuick import QtQuick3D import QtQuick3D.Particles3D import QtQuick3D.Helpers import QtQuick.Timeline import QtQuick.Controls import QtQuick.Layouts Item { id: mainWindow anchors.fill: parent Timeline { id: timeline enabled: true startFrame: 0 endFrame: 100 animations: [ TimelineAnimation { id: timelineAnimation running: true duration: (100 - timeline.currentFrame) * 100 from: timeline.currentFrame to: 100 } ] keyframeGroups: [ KeyframeGroup { target: psystem property: "time" Keyframe { frame: 0; value: 0 } Keyframe { frame: 100; value: 15000 } }, KeyframeGroup { target: cameraRotation property: "rot" Keyframe { frame: 0; value: 0 } Keyframe { frame: 100; value: 180 } }, KeyframeGroup { target: actNode property: "y" Keyframe { frame: 0; value: 50 } Keyframe { frame: 100; value: -100 } } ] } View3D { anchors.fill: parent camera: camera environment: SceneEnvironment { clearColor: "#404040" backgroundMode: SceneEnvironment.Color antialiasingMode: settings.antialiasingMode antialiasingQuality: settings.antialiasingQuality } Node { id: cameraRotation property real rot: 0.0 eulerRotation: Qt.vector3d(0, rot, 0) PerspectiveCamera { id: camera position: Qt.vector3d(0, 0, 150) clipFar: 2000 } } DirectionalLight { brightness: 50 eulerRotation: Qt.vector3d(-90, -90, 0) castsShadow: true shadowFactor: 25 shadowMapQuality: Light.ShadowMapQualityHigh } DirectionalLight { eulerRotation: Qt.vector3d(180, 0, 0) brightness: 25 } DirectionalLight { brightness: 25 } Model { source: "#Rectangle" eulerRotation: Qt.vector3d(-90, 0, 0) y: -30 scale: Qt.vector3d(3, 3, 1) receivesShadows: true materials: [ DefaultMaterial { diffuseColor: "#0c100c" } ] } ParticleSystem3D { id: psystem running: false x: -100 Node { id: actNode eulerRotation: Qt.vector3d(-90, 0, 0) Model { visible: particle.emitMode === ModelBlendParticle3D.Activation source: "#Rectangle" scale: Qt.vector3d(0.5, 0.5, 1) receivesShadows: false materials: [ DefaultMaterial { lighting: DefaultMaterial.NoLighting cullMode: Material.NoCulling opacity: 0.25 } ] } } Component { id: modelComponent Model { source: "meshes/oldqtlogo.mesh" scale: Qt.vector3d(10, 10, 10) receivesShadows: false materials: [ PrincipledMaterial { baseColor: "#41cd52" metalness: 0.8 roughness: 0.1 specularAmount: 1 cullMode: cullingModelBox.checked ? Material.BackFaceCulling : Material.NoCulling } ] } } Node { id: translateNode x: 150 } ModelBlendParticle3D { id: particle delegate: modelComponent endNode: translateNode modelBlendMode: blendModeSelectionBox.selection endTime: 1500 activationNode: actNode emitMode: emitModeSelectionBox.selection } ParticleEmitter3D { id: emitter system: psystem particle: particle lifeSpan: particle.modelBlendMode === ModelBlendParticle3D.Explode ? 40000 : 4000 emitRate: particle.maxAmount / 10 velocity: VectorDirection3D { direction: Qt.vector3d(50, 10, 0) directionVariation: Qt.vector3d(0, 10, 10) } particleRotation: Qt.vector3d(20, 0, 3) particleRotationVariation: Qt.vector3d(4, 0, 1) particleScale: 1.0 particleEndScale: 1.0 } } } SettingsView { id: settingsView CustomCheckBox { id: cullingModelBox text: "Enable culling" checked: false } CustomSelectionBox { id: blendModeSelectionBox text: "Blend Mode" values: ["Explode", "Construct", "Transfer"] parentWidth: settingsView.width onSelectionChanged: { timeline.currentFrame = 0 psystem.reset() } } CustomSelectionBox { id: emitModeSelectionBox text: "Emit Mode" values: ["Sequential", "Random", "Activation"] parentWidth: settingsView.width onSelectionChanged: { timeline.currentFrame = 0 psystem.reset() } } } Frame { id: toolbar anchors.left: parent.left anchors.leftMargin: 20 anchors.right: parent.right anchors.rightMargin: 20 anchors.bottom: parent.bottom anchors.bottomMargin: 80 height: 60 padding: 0 background: Rectangle { color: "#ffffff" radius: 4 opacity: 0.2 } RowLayout { anchors.fill: parent Button { id: playButton Layout.leftMargin: 14 icon.source: timelineAnimation.running ? "qrc:/qml/images/icon_pause.png" : "qrc:/qml/images/icon_play.png" icon.width: toolbar.height - 10 icon.height: toolbar.height - 10 icon.color: "transparent" background: Rectangle { color: "transparent" } onClicked: { // If we are close to end, start from the beginning if (timeline.currentFrame >= timeline.endFrame - 1.0) timeline.currentFrame = 0; timelineAnimation.running = !timelineAnimation.running; } } CustomSlider { id: sliderTimelineTime Layout.fillWidth: true sliderValue: timeline.currentFrame sliderEnabled: !timelineAnimation.running || timelineAnimation.paused fromValue: 0.0 toValue: 100.0 onSliderValueChanged: timeline.currentFrame = sliderValue; } } } LoggingView { id: loggingView anchors.bottom: parent.bottom particleSystems: [psystem] } }