| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #include "qquickpointdirection_p.h" |
| 5 | #include <QRandomGenerator> |
| 6 | |
| 7 | QT_BEGIN_NAMESPACE |
| 8 | |
| 9 | /*! |
| 10 | \qmltype PointDirection |
| 11 | \instantiates QQuickPointDirection |
| 12 | \inqmlmodule QtQuick.Particles |
| 13 | \ingroup qtquick-particles |
| 14 | \inherits Direction |
| 15 | \brief For specifying a direction that varies in x and y components. |
| 16 | |
| 17 | The PointDirection element allows both the specification of a direction by x and y components, |
| 18 | as well as varying the parameters by x or y component. |
| 19 | */ |
| 20 | /*! |
| 21 | \qmlproperty real QtQuick.Particles::PointDirection::x |
| 22 | */ |
| 23 | /*! |
| 24 | \qmlproperty real QtQuick.Particles::PointDirection::y |
| 25 | */ |
| 26 | /*! |
| 27 | \qmlproperty real QtQuick.Particles::PointDirection::xVariation |
| 28 | */ |
| 29 | /*! |
| 30 | \qmlproperty real QtQuick.Particles::PointDirection::yVariation |
| 31 | */ |
| 32 | |
| 33 | QQuickPointDirection::QQuickPointDirection(QObject *parent) : |
| 34 | QQuickDirection(parent) |
| 35 | , m_x(0) |
| 36 | , m_y(0) |
| 37 | , m_xVariation(0) |
| 38 | , m_yVariation(0) |
| 39 | { |
| 40 | } |
| 41 | |
| 42 | QPointF QQuickPointDirection::sample(const QPointF &) |
| 43 | { |
| 44 | QPointF ret; |
| 45 | ret.setX(m_x - m_xVariation + QRandomGenerator::global()->generateDouble() * m_xVariation * 2); |
| 46 | ret.setY(m_y - m_yVariation + QRandomGenerator::global()->generateDouble() * m_yVariation * 2); |
| 47 | return ret; |
| 48 | } |
| 49 | |
| 50 | QT_END_NAMESPACE |
| 51 | |
| 52 | #include "moc_qquickpointdirection_p.cpp" |
| 53 |