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Diffstat (limited to 'examples/quick/particles/emitters/content/customemitter.qml')
-rw-r--r-- | examples/quick/particles/emitters/content/customemitter.qml | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/examples/quick/particles/emitters/content/customemitter.qml b/examples/quick/particles/emitters/content/customemitter.qml new file mode 100644 index 0000000000..40b04a56d5 --- /dev/null +++ b/examples/quick/particles/emitters/content/customemitter.qml @@ -0,0 +1,96 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Digia Plc and its Subsidiary(-ies) 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 + +ParticleSystem { + id: sys + width: 360 + height: 600 + running: true + Rectangle { + z: -1 + anchors.fill: parent + color: "black" + } + + property real petalLength: 180 + property real petalRotation: 0 + NumberAnimation on petalRotation { + from: 0; + to: 360; + loops: -1; + running: true + duration: 24000 + } + + function convert(a) {return a*(Math.PI/180);} + Emitter { + lifeSpan: 4000 + emitRate: 120 + size: 12 + anchors.centerIn: parent + //! [0] + onEmitParticles: { + for (var i=0; i<particles.length; i++) { + var particle = particles[i]; + particle.startSize = Math.max(02,Math.min(492,Math.tan(particle.t/2)*24)); + var theta = Math.floor(Math.random() * 6.0); + particle.red = theta == 0 || theta == 1 || theta == 2 ? 0.2 : 1; + particle.green = theta == 2 || theta == 3 || theta == 4 ? 0.2 : 1; + particle.blue = theta == 4 || theta == 5 || theta == 0 ? 0.2 : 1; + theta /= 6.0; + theta *= 2.0*Math.PI; + theta += sys.convert(sys.petalRotation);//Convert from degrees to radians + particle.initialVX = petalLength * Math.cos(theta); + particle.initialVY = petalLength * Math.sin(theta); + particle.initialAX = particle.initialVX * -0.5; + particle.initialAY = particle.initialVY * -0.5; + } + } + //! [0] + } + + ImageParticle { + source: "../../images/particle4.png" + alpha: 0.0 + } +} |