Qt Quick 3D - Particles 3D Testbed Example▲
This example demonstrates different ways to use the https:// module features. Particles Testbed contains a collection of examples, some emphasizing a particular feature and some combining more features for achieving the desired appearance.
Common Features▲
The examples inside the Testbed share some common features. To exit the example back to launching screen, press the back arrow at the top-left corner.
Bottom-right corner of each example contain an icon that opens the logging view. From this view, you can see different debug data about the particles. Each https:// has its own row showing its https:// data.
Top-right corner of the most examples contain a settings view which can be shown or hidden by clicking its icon. These settings help to demonstrate individual API features as well as the dynamic behavior of the particle systems.
Snowing Example▲
Let's go through the basics of https:// by looking at the Snowing example.
First, import the https:// module with the following statement:
import QtQuick3D.Particles3Dhttps:// is the root of the particle system which handles the system timing and groups all the other related elements like particles, emitters, and affectors together.
ParticleSystem3D {
id: psystem
// Start so that the snowing is in full steam
startTime: 15000Then we create a https:// which is a visual 2D texture particle. If we would need a 3D model particles we could alternatively use https://. Defining the amount of particles with https:// is important so that optimal buffer sizes get allocated. Here our snowflakes are white, with varied opacity and they fade in and out in 1000ms.
SpriteParticle3D {
id: snowParticle
sprite: Texture {
source: "images/snowflake.png"
}
maxAmount: 1500 * sliderIntensity.sliderValue
color: "#ffffff"
colorVariation: Qt.vector4d(0.0, 0.0, 0.0, 0.5);
fadeInDuration: 1000
fadeOutDuration: 1000
}Next we will need https:// to emit the above snowParticle particles. The https:// property defines area where emitting is done. Here we define snowflakes to have varied rotation and size. With the https:// property you can define the initial direction of speed of the emitted particles. Each snowflake particle exists for 15 seconds and the https:// is controlled with the settings sliders.
ParticleEmitter3D {
id: emitter
particle: snowParticle
position: Qt.vector3d(0, 1000, -350)
depthBias: -100
scale: Qt.vector3d(15.0, 0.0, 15.0)
shape: ParticleShape3D {
type: ParticleShape3D.Sphere
}
particleRotationVariation: Qt.vector3d(180, 180, 180)
particleRotationVelocityVariation: Qt.vector3d(50, 50, 50);
particleScale: 2.0
particleScaleVariation: 0.5;
velocity: VectorDirection3D {
direction: Qt.vector3d(0, sliderVelocityY.sliderValue, 0)
directionVariation: Qt.vector3d(0, sliderVelocityY.sliderValue * 0.4, 0)
}
emitRate: sliderEmitRate.sliderValue * sliderIntensity.sliderValue
lifeSpan: 15000
}Usually also some affectors are used to make the particles movement more interesting. In this Snowing example we use https:// to get the snowflakes flying with wavy curves as well as https:// to simulate windy weather.
Wander3D {
enabled: checkBoxWanderEnabled.checked
globalAmount: Qt.vector3d(sliderWanderGlobalAmount.sliderValue, 0, sliderWanderGlobalAmount.sliderValue)
globalPace: Qt.vector3d(sliderWanderGlobalPace.sliderValue, 0, sliderWanderGlobalPace.sliderValue)
uniqueAmount: Qt.vector3d(sliderWanderUniqueAmount.sliderValue, 0, sliderWanderUniqueAmount.sliderValue)
uniquePace: Qt.vector3d(sliderWanderUniquePace.sliderValue, 0, sliderWanderUniquePace.sliderValue)
uniqueAmountVariation: sliderWanderUniqueAmountVariation.sliderValue
uniquePaceVariation: sliderWanderUniquePaceVariation.sliderValue
}
PointRotator3D {
enabled: checkBoxRotatorEnabled.checked
pivotPoint: Qt.vector3d(0, 0, -350)
direction: Qt.vector3d(0, 1, 0)
magnitude: sliderRotatorMagnitude.sliderValue
}List of Files▲
Files:
List of Files▲
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particles3d/AlignedParticles.qml
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particles3d/AnimatedSprite.qml
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particles3d/AppSettings.qml
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particles3d/AttractorShapes.qml
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particles3d/CMakeLists.txt
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particles3d/ColorfulParticles.qml
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particles3d/CustomCheckBox.qml
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particles3d/CustomLabel.qml
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particles3d/CustomSelectionBox.qml
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particles3d/CustomSlider.qml
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particles3d/DynamicBursts.qml
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particles3d/EmitAndBurst.qml
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particles3d/EmitterCustomShapes.qml
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particles3d/EmitterShapes.qml
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particles3d/FadingInOut.qml
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particles3d/Fire.qml
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particles3d/HeartTrail.qml
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particles3d/Lights.qml
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particles3d/LineParticles.qml
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particles3d/LoggingView.qml
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particles3d/ModelBlendParticles.qml
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particles3d/ModelShape.qml
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particles3d/OceanSpider.qml
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particles3d/QtLogoAnimation.qml
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particles3d/SettingsView.qml
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particles3d/Snowing.qml
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particles3d/Sorting.qml
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particles3d/Speedometer.qml
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particles3d/StartupView.qml
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particles3d/SystemPlayPause.qml
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particles3d/TrailEmitterBurst.qml
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particles3d/main.cpp
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particles3d/main.qml
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particles3d/particles3d.pro
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particles3d/qml.qrc
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particles3d/qmldir
List of Files▲
Images:
List of Files▲
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particles3d/images/arrow_icon.png
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particles3d/images/bear_black.png
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particles3d/images/colorTable.png
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particles3d/images/color_table2.png
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particles3d/images/color_table3.png
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particles3d/images/color_table4.png
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particles3d/images/color_table5.png
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particles3d/images/dot.png
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particles3d/images/dust.png
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particles3d/images/explosion_01_strip13.png
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particles3d/images/icon_interval.png
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particles3d/images/icon_logging.png
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particles3d/images/icon_pause.png
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particles3d/images/icon_play.png
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particles3d/images/icon_settings.png
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particles3d/images/leather_n.png
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particles3d/images/qt_logo.png
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particles3d/images/qt_logo2.png
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particles3d/images/qt_logo2_n.png
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particles3d/images/smoke.png
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particles3d/images/smoke_sprite.png
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particles3d/images/snowflake.png
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particles3d/images/speedometer_labels.png
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particles3d/images/sphere.png
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particles3d/images/sprite_09.png
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particles3d/images/star.png
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particles3d/images/star2.png
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particles3d/images/star3.png