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39#include "qquicklineextruder_p.h"
40#include <QRandomGenerator>
41#include <cmath>
42
43/*!
44 \qmltype LineShape
45 \instantiates QQuickLineExtruder
46 \inqmlmodule QtQuick.Particles
47 \inherits Shape
48 \brief Represents a line for affectors and emitters.
49 \ingroup qtquick-particles
50
51*/
52
53/*!
54 \qmlproperty bool QtQuick.Particles::LineShape::mirrored
55
56 By default, the line goes from (0,0) to (width, height) of the item that
57 this shape is being applied to.
58
59 If mirrored is set to true, this will be mirrored along the y axis.
60 The line will then go from (0,height) to (width, 0).
61*/
62
63QQuickLineExtruder::QQuickLineExtruder(QObject *parent) :
64 QQuickParticleExtruder(parent), m_mirrored(false)
65{
66}
67
68QPointF QQuickLineExtruder::extrude(const QRectF &r)
69{
70 qreal x,y;
71 if (!r.height()){
72 x = r.width() * QRandomGenerator::global()->generateDouble();
73 y = 0;
74 }else{
75 y = r.height() * QRandomGenerator::global()->generateDouble();
76 if (!r.width()){
77 x = 0;
78 }else{
79 x = r.width()/r.height() * y;
80 if (m_mirrored)
81 x = r.width() - x;
82 }
83 }
84 return QPointF(x,y);
85}
86
87#include "moc_qquicklineextruder_p.cpp"
88

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