内容

• 特性
• 公共函数
• 信号
• 详细描述

QOrbitCameraController Class

( Qt3DExtras::QOrbitCameraController )

The QOrbitCameraController class allows controlling the scene camera along orbital path. 更多...

头：	#include <QOrbitCameraController>
qmake:	QT += 3dextras
Since:	Qt 5.7
继承：	Qt3DCore::QEntity

• 所有成员列表，包括继承成员

特性

• camera : Qt3DRender::QCamera *
• linearSpeed : float
• lookSpeed : float
• zoomInLimit : float

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

公共函数

	QOrbitCameraController (Qt3DCore::QNode * parent = nullptr)
	~QOrbitCameraController ()
Qt3DRender::QCamera *	camera () const
float	linearSpeed () const
float	lookSpeed () const
void	setCamera (Qt3DRender::QCamera * camera )
void	setLinearSpeed (float linearSpeed )
void	setLookSpeed (float lookSpeed )
void	setZoomInLimit (float zoomInLimit )
float	zoomInLimit () const

• 4 公共函数继承自 Qt3DCore::QEntity
• 11 公共函数继承自 Qt3DCore::QNode
• 32 公共函数继承自 QObject

信号

void	cameraChanged ()
void	linearSpeedChanged ()
void	lookSpeedChanged ()
void	zoomInLimitChanged ()

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

额外继承成员

• 3 公共槽继承自 Qt3DCore::QNode
• 1 公共槽继承自 QObject
• 11 静态公共成员继承自 QObject
• 2 保护函数继承自 Qt3DCore::QNode
• 9 保护函数继承自 QObject

详细描述

The QOrbitCameraController class allows controlling the scene camera along orbital path.

The controls are:

输入	动作
Left mouse button	While the left mouse button is pressed, mouse movement along x-axis moves the camera left and right and movement along y-axis moves it up and down.
Right mouse button	While the right mouse button is pressed, mouse movement along x-axis pans the camera around the camera view center and movement along y-axis tilts it around the camera view center.
Both left and right mouse button	While both the left and the right mouse button are pressed, mouse movement along y-axis zooms the camera in and out without changing the view center.
Mouse scroll wheel	Zooms the camera in and out without changing the view center.
方向键	Move the camera vertically and horizontally relative to camera viewport.
Page up and page down keys	Move the camera forwards and backwards.
Shift key	Changes the behavior of the up and down arrow keys to zoom the camera in and out without changing the view center. The other movement keys are disabled.
Alt key	Changes the behovior of the arrow keys to pan and tilt the camera around the view center. Disables the page up and page down keys.

特性文档编制

camera : Qt3DRender::QCamera *

Holds the currently controlled camera.

访问函数：

Qt3DRender::QCamera *	camera () const
void	setCamera (Qt3DRender::QCamera * camera )

通知程序信号：

void	cameraChanged ()

linearSpeed : float

Holds the current linear speed of the camera controller. Linear speed determines the movement speed of the camera.

访问函数：

float	linearSpeed () const
void	setLinearSpeed (float linearSpeed )

通知程序信号：

void	linearSpeedChanged ()

lookSpeed : float

Holds the current look speed of the camera controller. The look speed determines the turn rate of the camera pan and tilt.

访问函数：

float	lookSpeed () const
void	setLookSpeed (float lookSpeed )

通知程序信号：

void	lookSpeedChanged ()

zoomInLimit : float

Holds the current zoom-in limit. The zoom-in limit determines how close to the view center the camera can be zoomed.

访问函数：

float	zoomInLimit () const
void	setZoomInLimit (float zoomInLimit )

通知程序信号：

void	zoomInLimitChanged ()

成员函数文档编制

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

Default constructs an instance of QOrbitCameraController.

QOrbitCameraController:: ~QOrbitCameraController ()

Destroys the instance of QOrbitCameraController.