内容

• 公共类型
• 特性
• 公共函数
• 公共槽
• 信号
• 详细描述

QScene2D 类

( Qt3DRender::Quick::QScene2D )

这个类使能够将 QML 渲染成纹理，然后可以用作 3D 场景的一部分。 更多...

头：	#include <Qt3DQuickScene2D/QScene2D>
qmake:	QT += 3dquickscene2d
Since:	Qt 5.9
实例化：	Scene2D
继承：	Qt3DCore::QNode

• 所有成员列表，包括继承成员

公共类型

enum	RenderPolicy { Continuous, SingleShot }

特性

• item : QQuickItem *
• mouseEnabled : bool
• output : Qt3DRender::QRenderTargetOutput *
• renderPolicy : QScene2D::RenderPolicy

• 3 特性继承自 Qt3DCore::QNode
• 1 特性继承自 QObject

公共函数

	QScene2D (Qt3DCore::QNode * parent = nullptr)
void	addEntity (Qt3DCore::QEntity * entity )
QVector<Qt3DCore::QEntity *>	entities ()
bool	isMouseEnabled () const
QQuickItem *	item () const
Qt3DRender::QRenderTargetOutput *	output () const
void	removeEntity (Qt3DCore::QEntity * entity )
QScene2D::RenderPolicy	renderPolicy () const

• 11 public functions inherited from Qt3DCore::QNode
• 32 公共函数继承自 QObject

公共槽

void	setItem (QQuickItem * item )
void	setMouseEnabled (bool enabled )
void	setOutput (Qt3DRender::QRenderTargetOutput * output )
void	setRenderPolicy (QScene2D::RenderPolicy policy )

• 3 公共槽继承自 Qt3DCore::QNode
• 1 公共槽继承自 QObject

信号

void	itemChanged (QQuickItem * item )
void	mouseEnabledChanged (bool enabled )
void	outputChanged (Qt3DRender::QRenderTargetOutput * output )
void	renderPolicyChanged (QScene2D::RenderPolicy policy )

• 4 信号继承自 Qt3DCore::QNode
• 2 信号继承自 QObject

额外继承成员

• 11 静态公共成员继承自 QObject
• 2 protected functions inherited from Qt3DCore::QNode
• 9 保护函数继承自 QObject

详细描述

这个类使能够将 QML 渲染成纹理，然后可以用作 3D 场景的一部分。

This class uses QQuickRenderControl to render the given QQuickItem into an offscreen surface, which is attached to a texture provided by the user. This allows the component to directly render into the texture without intermediate copy and the user to freely specify how the texture is used in the 3D scene.

The entities using the QScene2D can be associated with the class to enable interaction with the item; if an entity has a QObjectPicker component, the pick events from that picker are sent to the QScene2D and converted to mouse events and finally sent to the item.

成员类型文档编制

enum QScene2D:: RenderPolicy

This enum type describes types of render policies available.

常量	值	描述
Qt3DRender::Quick::QScene2D::Continuous	0	Scene2D is rendering continuously. This is the default render policy.
Qt3DRender::Quick::QScene2D::SingleShot	1	Scene2D renders to the texture only once after which the resources allocated for rendering are released.

特性文档编制

item : QQuickItem *

保持 QQuickItem , which is rendered by QScene2D 到纹理。

访问函数：

QQuickItem *	item () const
void	setItem (QQuickItem * item )

通知程序信号：

void	itemChanged (QQuickItem * item )

mouseEnabled : bool

Holds whether mouse events are enabled for the rendered item. The mouse events are generated from object picking events of the entities added to the QScene2D . Mouse is enabled by default.

注意： Events are delayed by one frame due to object picking happening in the backend.

访问函数：

bool	isMouseEnabled () const
void	setMouseEnabled (bool enabled )

通知程序信号：

void	mouseEnabledChanged (bool enabled )

output : Qt3DRender::QRenderTargetOutput *

保持 QRenderTargetOutput , which specifies where the QScene2D is rendering to.

访问函数：

Qt3DRender::QRenderTargetOutput *	output () const
void	setOutput (Qt3DRender::QRenderTargetOutput * output )

通知程序信号：

void	outputChanged (Qt3DRender::QRenderTargetOutput * output )

renderPolicy : QScene2D::RenderPolicy

Holds the render policy of this Scene2D .

访问函数：

QScene2D::RenderPolicy	renderPolicy () const
void	setRenderPolicy (QScene2D::RenderPolicy policy )

通知程序信号：

void	renderPolicyChanged (QScene2D::RenderPolicy policy )

成员函数文档编制

QScene2D:: QScene2D ( Qt3DCore::QNode * parent = nullptr)

The constructor creates a new QScene2D instance with the specified parent .

void QScene2D:: addEntity ( Qt3DCore::QEntity * entity )

添加 entity to the the QScene2D object. If the entities have QObjectPicker , the pick events from that entity are sent to QScene2D and converted to mouse events.

QVector < Qt3DCore::QEntity *> QScene2D:: entities ()

Retrieve entities associated with the QScene2D .

void QScene2D:: removeEntity ( Qt3DCore::QEntity * entity )

Removes an entity from the the QScene2D 对象。