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39
40#include "qquickpointdirection_p.h"
41#include <QRandomGenerator>
42
43QT_BEGIN_NAMESPACE
44
45/*!
46 \qmltype PointDirection
47 \instantiates QQuickPointDirection
48 \inqmlmodule QtQuick.Particles
49 \ingroup qtquick-particles
50 \inherits Direction
51 \brief For specifying a direction that varies in x and y components.
52
53 The PointDirection element allows both the specification of a direction by x and y components,
54 as well as varying the parameters by x or y component.
55*/
56/*!
57 \qmlproperty real QtQuick.Particles::PointDirection::x
58*/
59/*!
60 \qmlproperty real QtQuick.Particles::PointDirection::y
61*/
62/*!
63 \qmlproperty real QtQuick.Particles::PointDirection::xVariation
64*/
65/*!
66 \qmlproperty real QtQuick.Particles::PointDirection::yVariation
67*/
68
69QQuickPointDirection::QQuickPointDirection(QObject *parent) :
70 QQuickDirection(parent)
71 , m_x(0)
72 , m_y(0)
73 , m_xVariation(0)
74 , m_yVariation(0)
75{
76}
77
78QPointF QQuickPointDirection::sample(const QPointF &)
79{
80 QPointF ret;
81 ret.setX(m_x - m_xVariation + QRandomGenerator::global()->generateDouble() * m_xVariation * 2);
82 ret.setY(m_y - m_yVariation + QRandomGenerator::global()->generateDouble() * m_yVariation * 2);
83 return ret;
84}
85
86QT_END_NAMESPACE
87
88#include "moc_qquickpointdirection_p.cpp"
89

source code of qtdeclarative/src/particles/qquickpointdirection.cpp