Fill out examples a little more
Adds an example of colorized ImageParticle, and an example comparing the particle system to dynamically created Images (which don't do too badly when they're kept really simple). Change-Id: Id9e8d0575a38ddde1c73d694bd5c062d56cbed42 Reviewed-on: http://codereview.qt-project.org/5047 Reviewed-by: Martin Jones <martin.jones@nokia.com>
This commit is contained in:
Alan Alpert
Qt by Nokia
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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import QtQuick 2.0
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import QtQuick.Particles 2.0
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Rectangle{
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width: 360
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height: 540
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color: "black"
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ParticleSystem{
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anchors.fill: parent
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ImageParticle{
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groups: ["stars"]
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anchors.fill: parent
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source: "../images/star.png"
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}
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Emitter{
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group: "stars"
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emitRate: 800
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lifeSpan: 2400
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size: 24
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sizeVariation: 8
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anchors.fill: parent
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}
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ImageParticle{
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anchors.fill: parent
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source: "../images/star.png"
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alpha: 0
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alphaVariation: 0.2
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colorVariation: 1.0
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}
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Emitter{
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anchors.centerIn: parent
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emitRate: 400
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lifeSpan: 2400
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size: 48
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sizeVariation: 8
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speed: AngleDirection{angleVariation: 180; magnitude: 60}
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}
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Turbulence{
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anchors.fill: parent
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strength: 2
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}
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}
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}
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@ -0,0 +1,122 @@
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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import QtQuick 2.0
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import QtQuick.Particles 2.0
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Rectangle{
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id: root
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color: "black"
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width: 640
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height: 480
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ParticleSystem{
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id: sys
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}
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ImageParticle{
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system: sys
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source: "../images/particle.png"
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color: "white"
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colorVariation: 1.0
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alpha: 0.1
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entryEffect: ImageParticle.None
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}
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Emitter{
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id: emitter
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system: sys
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width: parent.width/2
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speed: PointDirection{y: 72; yVariation: 24}
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lifeSpan: 10000
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emitRate: 1000
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enabled: false
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size: 32
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}
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Item{
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id: fakeEmitter
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function burst(number){
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while(number > 0){
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var item = fakeParticle.createObject(root);
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item.lifeSpan = Math.random() * 5000 + 5000;
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item.x = Math.random() * 320 + 320;
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item.y = 0;
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number--;
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}
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}
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Component{
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id: fakeParticle
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Image{
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id: container
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property int lifeSpan: 10000
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width: 32
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height: 32
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source: "../images/particle.png"
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y: 0
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PropertyAnimation on y{from: -16; to: 480-16; duration: container.lifeSpan; running: true}
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SequentialAnimation on opacity{
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running: true
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NumberAnimation{ from:0; to: 1; duration: 500}
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PauseAnimation{ duration: container.lifeSpan - 1000}
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NumberAnimation{ from:1; to: 0; duration: 500}
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ScriptAction{ script: container.destroy(); }
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}
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}
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}
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}
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Text{
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anchors.left: parent.left
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anchors.bottom: parent.bottom
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text: "1000 particles"
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color: "white"
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MouseArea{
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anchors.fill: parent
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onClicked: emitter.burst(1000);
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}
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}
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Text{
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anchors.right: parent.right
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anchors.bottom: parent.bottom
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text: "1000 items"
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color: "white"
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MouseArea{
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anchors.fill: parent
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onClicked: fakeEmitter.burst(1000);
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}
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}
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}
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