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<h1 class="title">dynamicemitters.qml Example File</h1>
<span class="subtitle">particles/system/content/dynamicemitters.qml</span>
<!-- $$$particles/system/content/dynamicemitters.qml-description -->
<div class="descr"> <a name="details"></a>
<pre class="qml">

  /****************************************************************************
  **
  ** Copyright (C) 2017 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the examples of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
  **
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  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
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  import QtQuick 2.0
  import QtQuick.Particles 2.0

  Rectangle {
      id: root
      color: "black"
      width: 640
      height: 480
      ParticleSystem {
          id: sys
      }
      ImageParticle {
          system: sys
          source: "qrc:///particleresources/glowdot.png"
          color: "white"
          colorVariation: 1.0
          alpha: 0.1
      }

      Component {
          id: emitterComp
          Emitter {
              id: container
              Emitter {
                  id: emitMore
                  system: sys
                  emitRate: 128
                  lifeSpan: 600
                  size: 16
                  endSize: 8
                  velocity: AngleDirection {angleVariation:360; magnitude: 60}
              }

              property int life: 2600
              property real targetX: 0
              property real targetY: 0
              function go() {
                  xAnim.start();
                  yAnim.start();
                  container.enabled = true
              }
              system: sys
              emitRate: 32
              lifeSpan: 600
              size: 24
              endSize: 8
              NumberAnimation on x {
                  id: xAnim;
                  to: targetX
                  duration: life
                  running: false
              }
              NumberAnimation on y {
                  id: yAnim;
                  to: targetY
                  duration: life
                  running: false
              }
              Timer {
                  interval: life
                  running: true
                  onTriggered: container.destroy();
              }
          }
      }

      function customEmit(x,y) {
          for (var i=0; i<8; i++) {
              var obj = emitterComp.createObject(root);
              obj.x = x
              obj.y = y
              obj.targetX = Math.random() * 240 - 120 + obj.x
              obj.targetY = Math.random() * 240 - 120 + obj.y
              obj.life = Math.round(Math.random() * 2400) + 200
              obj.emitRate = Math.round(Math.random() * 32) + 32
              obj.go();
          }
      }

      Timer {
          interval: 10000
          triggeredOnStart: true
          running: true
          repeat: true
          onTriggered: customEmit(Math.random() * 320, Math.random() * 480)
      }
      MouseArea {
          anchors.fill: parent
          onClicked: customEmit(mouse.x, mouse.y);
      }

      Text {
          anchors.horizontalCenter: parent.horizontalCenter
          text: "Click Somewhere"
          color: "white"
          font.pixelSize: 24
      }
  }

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<!-- @@@particles/system/content/dynamicemitters.qml -->
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