demo.qml Example File | Qt Quick 5.12.12

- Qt 5.12
- Qt Quick
- QQuickRenderControl Example
- demo.qml Example File
- Qt 5.12.12 Reference Documentation

# demo.qml Example File

rendercontrol/demo.qml

     /****************************************************************************
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     ** This file is part of the examples of the Qt Toolkit.
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     import QtQuick 2.0
     import QtQuick.Particles 2.0

     Rectangle {
         id: root

         gradient: Gradient {
             GradientStop { position: 0; color: mouse.pressed ? "lightsteelblue" : "steelblue" }
             GradientStop { position: 1; color: "black" }
         }

         Text {
             anchors.centerIn: parent
             text: "Qt Quick in a texture"
             font.pointSize: 40
             color: "white"

             SequentialAnimation on rotation {
                 PauseAnimation { duration: 2500 }
                 NumberAnimation { from: 0; to: 360; duration: 5000; easing.type: Easing.InOutCubic }
                 loops: Animation.Infinite
             }
         }

         ParticleSystem {
             id: particles
             anchors.fill: parent

             ImageParticle {
                 id: smoke
                 system: particles
                 anchors.fill: parent
                 groups: ["A", "B"]
                 source: "qrc:///particleresources/glowdot.png"
                 colorVariation: 0
                 color: "#00111111"
             }
             ImageParticle {
                 id: flame
                 anchors.fill: parent
                 system: particles
                 groups: ["C", "D"]
                 source: "qrc:///particleresources/glowdot.png"
                 colorVariation: 0.1
                 color: "#00ff400f"
             }

             Emitter {
                 id: fire
                 system: particles
                 group: "C"

                 y: parent.height
                 width: parent.width

                 emitRate: 350
                 lifeSpan: 3500

                 acceleration: PointDirection { y: -17; xVariation: 3 }
                 velocity: PointDirection {xVariation: 3}

                 size: 24
                 sizeVariation: 8
                 endSize: 4
             }

             TrailEmitter {
                 id: fireSmoke
                 group: "B"
                 system: particles
                 follow: "C"
                 width: root.width
                 height: root.height - 68

                 emitRatePerParticle: 1
                 lifeSpan: 2000

                 velocity: PointDirection {y:-17*6; yVariation: -17; xVariation: 3}
                 acceleration: PointDirection {xVariation: 3}

                 size: 36
                 sizeVariation: 8
                 endSize: 16
             }

             TrailEmitter {
                 id: fireballFlame
                 anchors.fill: parent
                 system: particles
                 group: "D"
                 follow: "E"

                 emitRatePerParticle: 120
                 lifeSpan: 180
                 emitWidth: TrailEmitter.ParticleSize
                 emitHeight: TrailEmitter.ParticleSize
                 emitShape: EllipseShape{}

                 size: 16
                 sizeVariation: 4
                 endSize: 4
             }

             TrailEmitter {
                 id: fireballSmoke
                 anchors.fill: parent
                 system: particles
                 group: "A"
                 follow: "E"

                 emitRatePerParticle: 128
                 lifeSpan: 2400
                 emitWidth: TrailEmitter.ParticleSize
                 emitHeight: TrailEmitter.ParticleSize
                 emitShape: EllipseShape{}

                 velocity: PointDirection {yVariation: 16; xVariation: 16}
                 acceleration: PointDirection {y: -16}

                 size: 24
                 sizeVariation: 8
                 endSize: 8
             }

             Emitter {
                 id: balls
                 system: particles
                 group: "E"

                 y: parent.height
                 width: parent.width

                 emitRate: 2
                 lifeSpan: 7000

                 velocity: PointDirection {y:-17*4*2; xVariation: 6*6}
                 acceleration: PointDirection {y: 17*2; xVariation: 6*6}

                 size: 8
                 sizeVariation: 4
             }

             Turbulence { //A bit of turbulence makes the smoke look better
                 anchors.fill: parent
                 groups: ["A","B"]
                 strength: 32
                 system: particles
             }
         }

         onWidthChanged: particles.reset()
         onHeightChanged: particles.reset()

         MouseArea {
             id: mouse
             anchors.fill: parent
         }
     }