Qt 5.6 | Qt Quick | Qt Quick Particles Examples - Emitters | burstandpulse.qml Example File

Qt 5.6.3 Reference Documentation

# burstandpulse.qml Example File

particles/emitters/content/burstandpulse.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 {
          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"
                  }
              }
          }
      }