gravity.qml Example File

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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"
      }

  }