内容

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

QScreenRayCaster Class

( Qt3DRender::QScreenRayCaster )

Performe ray casting test based on screen coordinates. 更多...

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

• 所有成员列表，包括继承成员
• 过时成员

特性

• position : QPoint

• 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

	QScreenRayCaster (Qt3DCore::QNode * parent = nullptr)
QPoint	position () 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	setPosition (const QPoint & position )
void	trigger ()
void	trigger (const QPoint & position )

• 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	positionChanged (const QPoint & position )

• 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

额外继承成员

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

详细描述

Performe ray casting test based on screen coordinates.

QScreenRayCaster can be used to perform ray casting tests by specifying coordinates in screen space, which will be used to construct an actual 3D ray between the near and far planes.

另请参阅 QRayCaster .

特性文档编制

position : QPoint

Holds the screen space position used to compute the actual 3D ray for intersection tests.

Note: the coordinates will be used for every available render surface as long as they are in the valid range.

访问函数：

QPoint	位置 () const
void	setPosition (const QPoint & position )

通知程序信号：

void	positionChanged (const QPoint & position )

成员函数文档编制

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

Default constructs an instance of QScreenRayCaster.

[slot] void QScreenRayCaster:: trigger ()

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

[slot] void QScreenRayCaster:: trigger (const QPoint & position )

Convenience method to set the coordinate value position and enable the component to trigger tests.