Qt Quick 3D - Particles 3D Testbed Example
// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick
import QtQuick3D
import QtQuick3D.Particles3D
Item {
id: mainWindow
readonly property real tentacleEmitRate: 120
readonly property real cameraDistance: sliderCameraDistance.sliderValue
property real cameraDistanceSmoothed: cameraDistance
property real tentacleWideness: 0
anchors.fill: parent
// Animate tentacle movement
SequentialAnimation on tentacleWideness {
loops: Animation.Infinite
NumberAnimation {
to: 30
duration: 6000
easing.type: Easing.InOutQuad
}
NumberAnimation {
to: -30
duration: 6000
easing.type: Easing.InOutQuad
}
}
Behavior on cameraDistanceSmoothed {
SmoothedAnimation {
velocity: 100
duration: 1000
}
}
// Background ocean gradient
Rectangle {
anchors.fill: parent
gradient: Gradient {
GradientStop {
color: "#005060"
position: 0.0
}
GradientStop {
color: "#000000"
position: 1.0
}
}
}
View3D {
anchors.fill: parent
environment: SceneEnvironment {
backgroundMode: SceneEnvironment.Transparent
antialiasingMode: settings.antialiasingMode
antialiasingQuality: settings.antialiasingQuality
}
// Camera rotating the spider
Node {
PerspectiveCamera {
id: camera
position: Qt.vector3d(0, 0, cameraDistanceSmoothed)
}
NumberAnimation on eulerRotation.y {
loops: Animation.Infinite
from: 0
to: 360
duration: 20000
}
SequentialAnimation on eulerRotation.x {
loops: Animation.Infinite
NumberAnimation {
to: -50
duration: 6000
easing.type: Easing.InOutQuad
}
NumberAnimation {
to: 0
duration: 6000
easing.type: Easing.InOutQuad
}
}
}
PointLight {
position: Qt.vector3d(0, 400, 0)
brightness: 200
}
// Body of the spider
Model {
id: spiderBody
source: "#Sphere"
scale: Qt.vector3d(1.0, 0.6, 1.2)
PrincipledMaterial {
id: spiderMaterial
baseColor: tentacleParticle.color
metalness: 1.0
roughness: 0.6
normalMap: Texture {
source: "images/leather_n.png"
}
normalStrength: 0.8
}
materials: spiderMaterial
Model {
source: "#Cone"
scale: Qt.vector3d(0.4, 0.5, 0.5)
position: Qt.vector3d(20, 10, -20)
eulerRotation: Qt.vector3d(-40, -80, 0)
materials: spiderMaterial
}
Model {
source: "#Cone"
scale: Qt.vector3d(0.4, 0.5, 0.5)
position: Qt.vector3d(-20, 10, -20)
eulerRotation: Qt.vector3d(-40, 80, 0)
materials: spiderMaterial
}
SequentialAnimation on y {
loops: Animation.Infinite
NumberAnimation {
to: 100
duration: 2500
easing.type: Easing.InOutQuad
}
NumberAnimation {
to: 0
duration: 2500
easing.type: Easing.InOutQuad
}
}
// System for tentacles particles
ParticleSystem3D {
id: psystemTentacles
SpriteParticle3D {
id: tentacleParticle
sprite: Texture {
source: "images/dot.png"
}
maxAmount: 8 * tentacleEmitRate * 1.5
color: "#000000"
colorVariation: Qt.vector4d(0.0, 0.0, 0.0, 0.2)
fadeInEffect: SpriteParticle3D.FadeNone
fadeOutDuration: 800
billboard: true
SequentialAnimation on color {
loops: Animation.Infinite
ColorAnimation {
to: "#202000"
duration: 2000
}
ColorAnimation {
to: "#200000"
duration: 2000
}
ColorAnimation {
to: "#000020"
duration: 2000
}
ColorAnimation {
to: "#002000"
duration: 2000
}
}
blendMode: SpriteParticle3D.Screen
}
// Emitters for all 8 tentacles
component TentacleEmitter: Node {
id: tentacleNode
property real movementAmount: 1.0
ParticleEmitter3D {
z: 55
eulerRotation.x: 80 + mainWindow.tentacleWideness * tentacleNode.movementAmount
system: psystemTentacles
particle: tentacleParticle
velocity: VectorDirection3D {
direction: Qt.vector3d(0, 300, 0)
}
particleScale: 6.0
particleEndScale: 0.5
emitRate: tentacleEmitRate
lifeSpan: 1500
}
}
TentacleEmitter {
eulerRotation.y: 0.5 * 45
movementAmount: 1.8
}
TentacleEmitter {
eulerRotation.y: 1.5 * 45
movementAmount: 1.3
}
TentacleEmitter {
eulerRotation.y: 2.5 * 45
movementAmount: 1.5
}
TentacleEmitter {
eulerRotation.y: 3.5 * 45
movementAmount: 2.2
}
TentacleEmitter {
eulerRotation.y: 4.5 * 45
movementAmount: 1.6
}
TentacleEmitter {
eulerRotation.y: 5.5 * 45
movementAmount: 1.1
}
TentacleEmitter {
eulerRotation.y: 6.5 * 45
movementAmount: 1.5
}
TentacleEmitter {
eulerRotation.y: 7.5 * 45
movementAmount: 2.1
}
Gravity3D {
direction: Qt.vector3d(0, 1, 0)
magnitude: -300
}
Wander3D {
globalAmount: Qt.vector3d(15, 15, 15)
globalPace: Qt.vector3d(1.0, 1.0, 1.0)
fadeInDuration: 1000
Vector3dAnimation on globalPaceStart {
loops: Animation.Infinite
duration: 8000
from: Qt.vector3d(0, 0, 0)
to: Qt.vector3d(5 * Math.PI * 2, 3 * Math.PI * 2, Math.PI * 2)
}
}
}
// Emitters for dust/smoke particles
ParticleEmitter3D {
id: smokeEmitter
system: psystemDust
particle: smokeParticle
particleScale: 10
particleScaleVariation: 5
particleEndScale: 60
particleEndScaleVariation: 30
particleRotationVariation: Qt.vector3d(0, 0, 180)
particleRotationVelocityVariation: Qt.vector3d(0, 0, 40)
emitRate: sliderDustEmitRate.sliderValue
lifeSpan: 3000
lifeSpanVariation: 1000
velocity: VectorDirection3D {
direction: Qt.vector3d(0, 0, 200)
directionVariation: Qt.vector3d(50, 50, 50)
}
}
ParticleEmitter3D {
id: dustEmitter
system: psystemDust
particle: dustParticle
emitRate: sliderDustEmitRate.sliderValue * 0.5
lifeSpan: 3000
lifeSpanVariation: 1000
particleScale: 10.0
particleScaleVariation: 5.0
particleEndScale: 30.0
particleEndScaleVariation: 10.0
particleRotationVariation: Qt.vector3d(20, 20, 180)
particleRotationVelocityVariation: Qt.vector3d(5, 5, 50)
velocity: VectorDirection3D {
direction: Qt.vector3d(0, 0, 100)
directionVariation: Qt.vector3d(20, 20, 20)
}
}
}
// System for dust/smoke particles
ParticleSystem3D {
id: psystemDust
SpriteParticle3D {
id: smokeParticle
sprite: Texture {
source: "images/smoke_sprite.png"
}
maxAmount: 200
spriteSequence: SpriteSequence3D {
frameCount: 15
interpolate: true
}
billboard: true
color: tentacleParticle.color
fadeInEffect: SpriteParticle3D.FadeNone
fadeOutEffect: Particle3D.FadeOpacity
fadeOutDuration: 1500
blendMode: SpriteParticle3D.Screen
}
SpriteParticle3D {
id: dustParticle
sprite: Texture {
source: "images/dust.png"
}
maxAmount: 100
color: "#ffffff"
colorVariation: Qt.vector4d(0.4, 0.4, 0.4, 0.4)
billboard: true
fadeInDuration: 200
fadeOutDuration: 1500
blendMode: SpriteParticle3D.Screen
}
}
// System for bubbles particles
ParticleSystem3D {
id: psystemBubbles
position: Qt.vector3d(0, 100, -200)
SpriteParticle3D {
id: bubbleParticle
sprite: Texture {
source: "images/sphere.png"
}
maxAmount: 300
color: "#80ffffff"
colorVariation: Qt.vector4d(0.0, 0.0, 0.0, 0.2)
fadeInDuration: 1000
fadeOutDuration: 1000
blendMode: SpriteParticle3D.Screen
billboard: true
}
ParticleEmitter3D {
particle: bubbleParticle
scale: Qt.vector3d(12, 12, 12)
particleScale: 2.0
particleScaleVariation: 1.0
particleEndScale: 1.0
particleEndScaleVariation: 0.5
emitRate: 100
lifeSpan: 3000
shape: ParticleShape3D {
type: ParticleShape3D.Sphere
}
velocity: VectorDirection3D {
direction: Qt.vector3d(0, 0, 200)
directionVariation: Qt.vector3d(20, 20, 100)
}
}
}
}
SettingsView {
CustomLabel {
text: "Camera Distance"
}
CustomSlider {
id: sliderCameraDistance
sliderValue: 400
fromValue: 200
toValue: 800
}
CustomLabel {
text: "Mystical Dust"
}
CustomSlider {
id: sliderDustEmitRate
sliderValue: 20
fromValue: 0
toValue: 50
}
}
LoggingView {
anchors.bottom: parent.bottom
particleSystems: [psystemTentacles, psystemBubbles, psystemDust]
}
}
