wander.qml Example File

particles/affectors/content/wander.qml
/**************************************************************************** ** ** 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: 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; } } }