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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick
import QtQuick.Particles
ParticleSystem {
id: sys
width: 360
height: 600
running: true
Rectangle {
z: -1
anchors.fill: parent
color: "black"
}
property real petalLength: 180
property real petalRotation
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: (particles) => {
for (var i=0; i<particles.length; i++) {
let particle = particles[i];
particle.startSize = Math.max(02,Math.min(492,Math.tan(particle.t/2)*24));
let 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 = sys.petalLength * Math.cos(theta);
particle.initialVY = sys.petalLength * Math.sin(theta);
particle.initialAX = particle.initialVX * -0.5;
particle.initialAY = particle.initialVY * -0.5;
}
}
//! [0]
}
ImageParticle {
source: "qrc:///particleresources/fuzzydot.png"
alpha: 0.0
}
}
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