Revision control
++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++
++ #include "qquickellipseextruder_p.h"
++ #include <qmath.h>
++ #include <qrandom.h>
++
++ QT_BEGIN_NAMESPACE
++ /*!
++ \qmltype EllipseShape
++ \nativetype QQuickEllipseExtruder
++ \inqmlmodule QtQuick.Particles
++ \ingroup qtquick-particles
++ \inherits Shape
++ \brief Represents an ellipse to other particle system elements.
++
++ This shape can be used by Emitter subclasses and Affector subclasses to have
++ them act upon an ellipse shaped area.
++ */
++ QQuickEllipseExtruder::QQuickEllipseExtruder(QObject *parent) :
++ QQuickParticleExtruder(parent)
++ , m_fill(true)
++ {
++ }
++
++ /*!
++ \qmlproperty bool QtQuick.Particles::EllipseShape::fill
++ If fill is true the ellipse is filled; otherwise it is just a border.
++
++ Default is true.
++ */
++
++ QPointF QQuickEllipseExtruder::extrude(const QRectF & r)
++ {
++ qreal theta = QRandomGenerator::global()->bounded(2 * M_PI);
++ qreal mag = m_fill ? QRandomGenerator::global()->generateDouble() : 1;
++ return QPointF(r.x() + r.width()/2 + mag * (r.width()/2) * qCos(theta),
++ r.y() + r.height()/2 + mag * (r.height()/2) * qSin(theta));
++ }
++
++ bool QQuickEllipseExtruder::contains(const QRectF &bounds, const QPointF &point)
++ {
++ if (!bounds.contains(point))
++ return false;
++
++ QPointF relPoint(bounds.center() - point);
++ qreal xa = relPoint.x()/bounds.width();
++ qreal yb = relPoint.y()/bounds.height();
++ return (xa * xa + yb * yb) < 0.25;
++ }
++
++ QT_END_NAMESPACE
++
++ #include "moc_qquickellipseextruder_p.cpp"