velocityfrommotion.qml Example File

particles/emitters/content/velocityfrommotion.qml
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import QtQuick 2.0 import QtQuick.Particles 2.0 Rectangle { id: root height: 540 width: 360 gradient: Gradient { GradientStop { position: 0; color: "#000020" } GradientStop { position: 1; color: "#000000" } } MouseArea { id: mouseArea anchors.fill: root } ParticleSystem { id: sys1 } ImageParticle { system: sys1 source: "qrc:///particleresources/glowdot.png" color: "cyan" alpha: 0 SequentialAnimation on color { loops: Animation.Infinite ColorAnimation { from: "cyan" to: "magenta" duration: 1000 } ColorAnimation { from: "magenta" to: "blue" duration: 2000 } ColorAnimation { from: "blue" to: "violet" duration: 2000 } ColorAnimation { from: "violet" to: "cyan" duration: 2000 } } colorVariation: 0.3 } Emitter { id: trailsNormal system: sys1 emitRate: 500 lifeSpan: 2000 y: mouseArea.pressed ? mouseArea.mouseY : circle.cy x: mouseArea.pressed ? mouseArea.mouseX : circle.cx velocity: PointDirection {xVariation: 4; yVariation: 4;} acceleration: PointDirection {xVariation: 10; yVariation: 10;} velocityFromMovement: 8 size: 8 sizeVariation: 4 } ParticleSystem { id: sys2 } ImageParticle { color: "cyan" system: sys2 alpha: 0 SequentialAnimation on color { loops: Animation.Infinite ColorAnimation { from: "magenta" to: "cyan" duration: 1000 } ColorAnimation { from: "cyan" to: "magenta" duration: 2000 } } colorVariation: 0.5 source: "qrc:///particleresources/star.png" } Emitter { id: trailsStars system: sys2 emitRate: 100 lifeSpan: 2200 y: mouseArea.pressed ? mouseArea.mouseY : circle.cy x: mouseArea.pressed ? mouseArea.mouseX : circle.cx velocity: PointDirection {xVariation: 4; yVariation: 4;} acceleration: PointDirection {xVariation: 10; yVariation: 10;} velocityFromMovement: 8 size: 22 sizeVariation: 4 } ParticleSystem { id: sys3; } ImageParticle { source: "qrc:///particleresources/glowdot.png" system: sys3 color: "orange" alpha: 0 SequentialAnimation on color { loops: Animation.Infinite ColorAnimation { from: "red" to: "green" duration: 2000 } ColorAnimation { from: "green" to: "red" duration: 2000 } } colorVariation: 0.2 } Emitter { id: trailsNormal2 system: sys3 emitRate: 300 lifeSpan: 2000 y: mouseArea.pressed ? mouseArea.mouseY : circle2.cy x: mouseArea.pressed ? mouseArea.mouseX : circle2.cx velocityFromMovement: 16 velocity: PointDirection {xVariation: 4; yVariation: 4;} acceleration: PointDirection {xVariation: 10; yVariation: 10;} size: 12 sizeVariation: 4 } ParticleSystem { id: sys4; } ImageParticle { system: sys4 source: "qrc:///particleresources/star.png" color: "green" alpha: 0 SequentialAnimation on color { loops: Animation.Infinite ColorAnimation { from: "green" to: "red" duration: 2000 } ColorAnimation { from: "red" to: "green" duration: 2000 } } colorVariation: 0.5 } Emitter { id: trailsStars2 system: sys4 emitRate: 50 lifeSpan: 2200 y: mouseArea.pressed ? mouseArea.mouseY : circle2.cy x: mouseArea.pressed ? mouseArea.mouseX : circle2.cx velocityFromMovement: 16 velocity: PointDirection {xVariation: 2; yVariation: 2;} acceleration: PointDirection {xVariation: 10; yVariation: 10;} size: 22 sizeVariation: 4 } color: "white" Item { id: circle //anchors.fill: parent property real radius: 0 property real dx: root.width / 2 property real dy: root.height / 2 property real cx: radius * Math.sin(percent*6.283185307179) + dx property real cy: radius * Math.cos(percent*6.283185307179) + dy property real percent: 0 SequentialAnimation on percent { loops: Animation.Infinite running: true NumberAnimation { duration: 1000 from: 1 to: 0 loops: 8 } NumberAnimation { duration: 1000 from: 0 to: 1 loops: 8 } } SequentialAnimation on radius { loops: Animation.Infinite running: true NumberAnimation { duration: 4000 from: 0 to: 100 } NumberAnimation { duration: 4000 from: 100 to: 0 } } } Item { id: circle3 property real radius: 100 property real dx: root.width / 2 property real dy: root.height / 2 property real cx: radius * Math.sin(percent*6.283185307179) + dx property real cy: radius * Math.cos(percent*6.283185307179) + dy property real percent: 0 SequentialAnimation on percent { loops: Animation.Infinite running: true NumberAnimation { from: 0.0; to: 1 ; duration: 10000; } } } Item { id: circle2 property real radius: 30 property real dx: circle3.cx property real dy: circle3.cy property real cx: radius * Math.sin(percent*6.283185307179) + dx property real cy: radius * Math.cos(percent*6.283185307179) + dy property real percent: 0 SequentialAnimation on percent { loops: Animation.Infinite running: true NumberAnimation { from: 0.0; to: 1 ; duration: 1000; } } } }