- Qt 5.5
- Qt Quick
- Qt Quick Particles Examples - Affectors
- wander.qml Example File
- Qt 5.5.1 Reference Documentation

# wander.qml Example File

particles/affectors/content/wander.qml

    /****************************************************************************
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    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
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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

    Rectangle {
        width: 360
        height: 540
        ParticleSystem { id: particles }
        ImageParticle {
            system: particles
            sprites: Sprite {
                name: "snow"
                source: "../../images/snowflake.png"
                frameCount: 51
                frameDuration: 40
                frameDurationVariation: 8
            }
        }

        Wander {
            id: wanderer
            system: particles
            anchors.fill: parent
            xVariance: 360/(wanderer.affectedParameter+1);
            pace: 100*(wanderer.affectedParameter+1);
        }

        Emitter {
            system: particles
            emitRate: 20
            lifeSpan: 7000
            velocity: PointDirection { y:80; yVariation: 40; }
            acceleration: PointDirection { y: 4 }
            size: 20
            sizeVariation: 10
            width: parent.width
            height: 100
        }
        Row {
            anchors.bottom: parent.bottom
            anchors.horizontalCenter: parent.horizontalCenter
            spacing: 4
            GreyButton {
                text:"dx/dt"
                onClicked: wanderer.affectedParameter = Wander.Position;
            }
            GreyButton {
                text:"dv/dt"
                onClicked: wanderer.affectedParameter = Wander.Velocity;
            }
            GreyButton {
                text:"da/dt"
                onClicked: wanderer.affectedParameter = Wander.Acceleration;
            }
        }
    }