- Qt 5.5
- Qt Quick
- Qt Quick Particles Examples - Emitters
- burstandpulse.qml Example File
- Qt 5.5.1 Reference Documentation

# burstandpulse.qml Example File

particles/emitters/content/burstandpulse.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
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    **     from this software without specific prior written permission.
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    import QtQuick 2.0
    import QtQuick.Particles 2.0

    Rectangle {
        width: 320
        height: 480
        color: "black"
        property bool lastWasPulse: false
        Timer {
            interval: 3500
            triggeredOnStart: true
            running: true
            repeat: true
            onTriggered: {
                if (lastWasPulse) {
                    burstEmitter.burst(500);
                    lastWasPulse = false;
                } else {
                    pulseEmitter.pulse(500);
                    lastWasPulse = true;
                }
            }
        }
        ParticleSystem {
            id: particles
            anchors.fill: parent
            ImageParticle {
                source: "qrc:///particleresources/star.png"
                alpha: 0
                colorVariation: 0.6
            }

            Emitter {
                id: burstEmitter
                x: parent.width/2
                y: parent.height/3
                emitRate: 1000
                lifeSpan: 2000
                enabled: false
                velocity: AngleDirection{magnitude: 64; angleVariation: 360}
                size: 24
                sizeVariation: 8
                Text {
                    anchors.centerIn: parent
                    color: "white"
                    font.pixelSize: 18
                    text: "Burst"
                }
            }
            Emitter {
                id: pulseEmitter
                x: parent.width/2
                y: 2*parent.height/3
                emitRate: 1000
                lifeSpan: 2000
                enabled: false
                velocity: AngleDirection{magnitude: 64; angleVariation: 360}
                size: 24
                sizeVariation: 8
                Text {
                    anchors.centerIn: parent
                    color: "white"
                    font.pixelSize: 18
                    text: "Pulse"
                }
            }
        }
    }