EffectShockwave.qml Example File

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import QtQuick 2.0

Effect {
    id: root
    parameters: ListModel {
        ListElement {
            name: "Amplitude"
            value: 0.5
        }
        onDataChanged: updateParameters()
    }

    function updateParameters()
    {
        granularity = parameters.get(0).value * 20;
        weight = parameters.get(0).value;
    }

    // Transform slider values, and bind result to shader uniforms
    property real granularity: 0.5 * 20
    property real weight: 0.5

    property real centerX
    property real centerY
    property real time

    SequentialAnimation {
        running: true
        loops: Animation.Infinite
        ScriptAction {
            script: {
                centerX = Math.random()
                centerY = Math.random()
            }
        }
        NumberAnimation {
            target: root
            property: "time"
            from: 0
            to: 1
            duration: 1000
        }
    }

    fragmentShaderFilename: "shockwave.fsh"
}