qquickellipseextruder.cpp

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// 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
QQuickEllipseExtruder::QQuickEllipseExtruder(QObject *parent) :
    QQuickParticleExtruder(parent)
  , m_fill(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"