QmL Random Scale Animation



  • i'm trying to create a way to make an image change randomly its scale. i need both the function that provides the random scale and the animation between the scales to be working. But it only does it the first time, any ideas why?

    if you know a easy way to do it i will appreciate that

    @import QtQuick 2.2
    import QtQuick.Window 2.0
    import QtQuick.Controls 1.1

    Rectangle {
    id: container;
    width: 700
    height: 700

    function randomscales()
    {
        var scalesArray = [1, 1,1, 1.1, 0.9, 1.2, 0.8,0.7]
        var randomNumber;
        var actualStateNumber
        do{
            randomNumber = Math.floor(Math.random()*scalesArray.length);
        }
        while (randomNumber == actualStateNumber);
        actualStateNumber = randomNumber;
        return scalesArray[randomNumber];
    }
    
    Timer{
        id: count1
        interval: 500
        running: true
        repeat: true
        onTriggered: {
            scaleAnimation.start()
            randomscales.start()
        }
    }
    
    Image {
        id: flor;
        source: "flor.png";
        x: 100
        y: 100
        scale: 1
    
        transform: Scale {
            id: scaleTransform
            property real scale: 1
            xScale: scale
            yScale: scale
            origin.x: 96
            origin.y: 104
        }
    
        SequentialAnimation {
            id: scaleAnimation
            loops: 1
            PropertyAnimation {
                target: scaleTransform
                properties: "scale"
                to: randomscales()
                duration: 500
            }
        }
    }
    

    }
    @


  • Moderators

    Hi,

    Starting the animation wont re-evaluate the binding and hence it wont update the to value. Instead you can
    @
    onTriggered: {
    propAnimation.to = randomscales() //propAnimation = id of PropertyAnimation
    scaleAnimation.start()
    }
    @

    Also randomscales.start() is wrong.


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