Qt 5.7 | Qt Quick | Qt Quick Particles Examples - Affectors | turbulence.qml Example File

Qt 5.7.1 Reference Documentation

# turbulence.qml Example File

particles/affectors/content/turbulence.qml

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      import QtQuick 2.0
      import QtQuick.Particles 2.0

      Rectangle {
          width: 320
          height: 480
          color: "#222222"
          id: root
          Image {
              source: "../../images/candle.png"
              anchors.bottom: parent.bottom
              anchors.horizontalCenter: parent.horizontalCenter
              anchors.bottomMargin: -60
              anchors.horizontalCenterOffset: 2
          }
          ParticleSystem {
              anchors.fill: parent
              MouseArea {
                  anchors.fill: parent
                  onClicked: turb.enabled = !turb.enabled
              }

              Turbulence {
                  id: turb
                  enabled: true
                  height: (parent.height / 2) - 4
                  width: parent.width
                  x: parent. width / 4
                  anchors.fill: parent
                  strength: 32
                  NumberAnimation on strength{from: 16; to: 64; easing.type: Easing.InOutBounce; duration: 1800; loops: -1}
              }

              ImageParticle {
                  groups: ["smoke"]
                  source: "qrc:///particleresources/glowdot.png"
                  color: "#11111111"
                  colorVariation: 0
              }
              ImageParticle {
                  groups: ["flame"]
                  source: "qrc:///particleresources/glowdot.png"
                  color: "#11ff400f"
                  colorVariation: 0.1
              }
              Emitter {
                  anchors.centerIn: parent
                  group: "flame"

                  emitRate: 120
                  lifeSpan: 1200
                  size: 20
                  endSize: 10
                  sizeVariation: 10
                  acceleration: PointDirection { y: -40 }
                  velocity: AngleDirection { angle: 270; magnitude: 20; angleVariation: 22; magnitudeVariation: 5 }
              }
              TrailEmitter {
                  id: smoke1
                  width: root.width
                  height: root.height/2
                  group: "smoke"
                  follow: "flame"

                  emitRatePerParticle: 1
                  lifeSpan: 2400
                  lifeSpanVariation: 400
                  size: 16
                  endSize: 8
                  sizeVariation: 8
                  acceleration: PointDirection { y: -40 }
                  velocity: AngleDirection { angle: 270; magnitude: 40; angleVariation: 22; magnitudeVariation: 5 }
              }
              TrailEmitter {
                  id: smoke2
                  width: root.width
                  height: root.height/2 - 20
                  group: "smoke"
                  follow: "flame"

                  emitRatePerParticle: 4
                  lifeSpan: 2400
                  size: 36
                  endSize: 24
                  sizeVariation: 12
                  acceleration: PointDirection { y: -40 }
                  velocity: AngleDirection { angle: 270; magnitude: 40; angleVariation: 22; magnitudeVariation: 5 }
              }
          }
      }