rotation.qml Example File

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import QtQuick 2.0
import QtQuick.Particles 2.0
Rectangle {
    color: "goldenrod"
    width: 2000
    height: 2000
    ParticleSystem {id: sys}
    ImageParticle {
        id: up
        system: sys
        source: "../../images/starfish_2.png"
        autoRotation: true //leaving these two settings at default allows you to test going up performance levels
        rotation: -90
    }
    Emitter {
        anchors.centerIn: parent
        system: sys
        emitRate: 10
        size: 200
        lifeSpan: 10000
        velocity: AngleDirection {angleVariation: 360; magnitudeVariation: 100;}
    }
    MouseArea {
        anchors.fill: parent
        onClicked: {
            up.autoRotation = !up.autoRotation
            up.rotation = up.autoRotation ? -90 : 0
        }
    }
}