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

Qt 5.7.1 Reference Documentation

# wander.qml Example File

particles/affectors/content/wander.qml

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      import QtQuick 2.0
      import QtQuick.Particles 2.0

      Rectangle {
          width: 360
          height: 540
          ParticleSystem { id: particles }
          ImageParticle {
              system: particles
              sprites: Sprite {
                  name: "snow"
                  source: "../../images/snowflake.png"
                  frameCount: 51
                  frameDuration: 40
                  frameDurationVariation: 8
              }
          }

          Wander {
              id: wanderer
              system: particles
              anchors.fill: parent
              xVariance: 360/(wanderer.affectedParameter+1);
              pace: 100*(wanderer.affectedParameter+1);
          }

          Emitter {
              system: particles
              emitRate: 20
              lifeSpan: 7000
              velocity: PointDirection { y:80; yVariation: 40; }
              acceleration: PointDirection { y: 4 }
              size: 20
              sizeVariation: 10
              width: parent.width
              height: 100
          }
          Row {
              anchors.bottom: parent.bottom
              anchors.horizontalCenter: parent.horizontalCenter
              spacing: 4
              GreyButton {
                  text:"dx/dt"
                  onClicked: wanderer.affectedParameter = Wander.Position;
              }
              GreyButton {
                  text:"dv/dt"
                  onClicked: wanderer.affectedParameter = Wander.Velocity;
              }
              GreyButton {
                  text:"da/dt"
                  onClicked: wanderer.affectedParameter = Wander.Acceleration;
              }
          }
      }