内容

• 特性
• 公共函数
• 公共槽
• 信号
• 静态公共成员
• 保护函数
• 详细描述

QRayCaster Class

( Qt3DRender::QRayCaster )

Qt3DRender::QRayCaster is used to perform ray casting tests in 3d world coordinates. 更多...

头：	#include <QRayCaster>
qmake:	QT += 3drender
Since:	Qt 5.11
实例化：	RayCaster
继承：	Qt3DRender::QAbstractRayCaster

• 所有成员列表，包括继承成员
• 过时成员

特性

• direction : QVector3D
• length : float
• origin : QVector3D

• 3 特性继承自 Qt3DRender::QAbstractRayCaster
• 1 特性继承自 Qt3DCore::QComponent
• 3 特性继承自 Qt3DCore::QNode
• 1 特性继承自 QObject

公共函数

	QRayCaster (Qt3DCore::QNode * parent = nullptr)
QVector3D	direction () const
float	length () const
QVector3D	origin () const

• 6 公共函数继承自 Qt3DRender::QAbstractRayCaster
• 2 公共函数继承自 Qt3DCore::QComponent
• 13 公共函数继承自 Qt3DCore::QNode
• 31 公共函数继承自 QObject

公共槽

void	setDirection (const QVector3D & direction )
void	setLength (float length )
void	setOrigin (const QVector3D & origin )
void	trigger ()
void	trigger (const QVector3D & origin , const QVector3D & direction , float length )

• 2 公共槽继承自 Qt3DRender::QAbstractRayCaster
• 1 公共槽继承自 Qt3DCore::QComponent
• 3 公共槽继承自 Qt3DCore::QNode
• 1 公共槽继承自 QObject

信号

void	directionChanged (const QVector3D & direction )
void	lengthChanged (float length )
void	originChanged (const QVector3D & origin )

• 3 信号继承自 Qt3DRender::QAbstractRayCaster
• 3 信号继承自 Qt3DCore::QComponent
• 4 信号继承自 Qt3DCore::QNode
• 2 信号继承自 QObject

静态公共成员

const QMetaObject

staticMetaObject

• 9 静态公共成员继承自 QObject

保护函数

QRayCaster (Qt3DRender::QAbstractRayCasterPrivate & dd , Qt3DCore::QNode * parent = nullptr)

• 2 保护函数继承自 Qt3DCore::QNode
• 9 保护函数继承自 QObject

详细描述

Qt3DRender::QRayCaster is used to perform ray casting tests in 3d world coordinates.

The 3d ray is defined by its origin, direction and length. It will be affected by the transformations applied to the entity it belongs to.

Ray casting tests will be performed every frame as long as the component is enabled. The hits property will be updated with the list of intersections.

另请参阅 QAbstractRayCaster and QScreenRayCaster .

特性文档编制

direction : QVector3D

Holds the direction of the 3D ray. This should be a unit vector.

访问函数：

QVector3D	direction () const
void	setDirection (const QVector3D & direction )

通知程序信号：

void	directionChanged (const QVector3D & direction )

length : float

Holds the length of the 3D ray.

访问函数：

float	length () const
void	setLength (float length )

通知程序信号：

void	lengthChanged (float length )

origin : QVector3D

Holds the origin of the 3D ray in local coordinates.

访问函数：

QVector3D	origin () const
void	setOrigin (const QVector3D & origin )

通知程序信号：

void	originChanged (const QVector3D & origin )

成员函数文档编制

QRayCaster:: QRayCaster ( Qt3DCore::QNode * parent = nullptr)

Default constructs an instance of QRayCaster.

[protected] QRayCaster:: QRayCaster ( Qt3DRender::QAbstractRayCasterPrivate & dd , Qt3DCore::QNode * parent = nullptr)

Default constructs an instance of QRayCaster.

[slot] void QRayCaster:: setLength ( float length )

Sets the length of the ray to length .

If the value is less than or equal to zero, the ray is concidered to be infinite.

注意： setter 函数对于特性 length .

另请参阅 length ().

[slot] void QRayCaster:: trigger ()

Convenience method to enable the component and trigger tests using the current ray.

[slot] void QRayCaster:: trigger (const QVector3D & origin , const QVector3D & direction , float length )

Convenience method to set the ray details origin , direction ，和 length , and enable the component to trigger tests.