turbulence.qml Example File

/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

import QtQuick 2.0
import QtQuick.Particles 2.0

Rectangle {
    width: 320
    height: 480
    color: "#222222"
    id: root
    Image {
        source: "../../images/candle.png"
        anchors.bottom: parent.bottom
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.bottomMargin: -60
        anchors.horizontalCenterOffset: 2
    }
    ParticleSystem {
        anchors.fill: parent
        MouseArea {
            anchors.fill: parent
            onClicked: turb.enabled = !turb.enabled
        }

        Turbulence {
            id: turb
            enabled: true
            height: (parent.height / 2) - 4
            width: parent.width
            x: parent. width / 4
            anchors.fill: parent
            strength: 32
            NumberAnimation on strength{from: 16; to: 64; easing.type: Easing.InOutBounce; duration: 1800; loops: -1}
        }

        ImageParticle {
            groups: ["smoke"]
            source: "qrc:///particleresources/glowdot.png"
            color: "#11111111"
            colorVariation: 0
        }
        ImageParticle {
            groups: ["flame"]
            source: "qrc:///particleresources/glowdot.png"
            color: "#11ff400f"
            colorVariation: 0.1
        }
        Emitter {
            anchors.centerIn: parent
            group: "flame"

            emitRate: 120
            lifeSpan: 1200
            size: 20
            endSize: 10
            sizeVariation: 10
            acceleration: PointDirection { y: -40 }
            velocity: AngleDirection { angle: 270; magnitude: 20; angleVariation: 22; magnitudeVariation: 5 }
        }
        TrailEmitter {
            id: smoke1
            width: root.width
            height: root.height/2
            group: "smoke"
            follow: "flame"

            emitRatePerParticle: 1
            lifeSpan: 2400
            lifeSpanVariation: 400
            size: 16
            endSize: 8
            sizeVariation: 8
            acceleration: PointDirection { y: -40 }
            velocity: AngleDirection { angle: 270; magnitude: 40; angleVariation: 22; magnitudeVariation: 5 }
        }
        TrailEmitter {
            id: smoke2
            width: root.width
            height: root.height/2 - 20
            group: "smoke"
            follow: "flame"

            emitRatePerParticle: 4
            lifeSpan: 2400
            size: 36
            endSize: 24
            sizeVariation: 12
            acceleration: PointDirection { y: -40 }
            velocity: AngleDirection { angle: 270; magnitude: 40; angleVariation: 22; magnitudeVariation: 5 }
        }
    }
}