Qt 5.6 | Qt Quick | Qt Quick Particles Examples - Affectors | gravity.qml Example File

Qt 5.6.3 Reference Documentation

# gravity.qml Example File

particles/affectors/content/gravity.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

      Item {
          id: window
          width: 320; height: 480
          Rectangle {
              id: sky
              anchors.fill: parent
              gradient: Gradient {
                  GradientStop {
                      position: 0.0
                      color: "DeepSkyBlue"
                  }
                  GradientStop {
                      position: 1.0
                      color: "SkyBlue"
                  }
              }
          }

          Rectangle {
              id: ground
              width: parent.height * 2
              height: parent.height
              y: parent.height/2
              x: parent.width/2 - parent.height
              transformOrigin: Item.Top
              rotation: 0
              gradient: Gradient {
                  GradientStop { position: 0.0; color: "ForestGreen"; }
                  GradientStop { position: 1.0; color: "DarkGreen"; }
              }
          }

          MouseArea {
              anchors.fill: parent
              onPositionChanged: {
                  var rot = Math.atan2(mouseY - window.height/2,mouseX - window.width/2) * 180/Math.PI;
                  ground.rotation = rot;
              }
          }

          ParticleSystem { id: sys }
          Gravity {
              system: sys
              magnitude: 32
              angle: ground.rotation + 90
          }
          Emitter {
              system: sys
              anchors.centerIn: parent
              emitRate: 1
              lifeSpan: 10000
              size: 64
          }
          ImageParticle {
              anchors.fill: parent
              system: sys
              source: "../../images/realLeaf1.png"
          }

      }