Qt Documentation

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QOrbitCameraController Class

(Qt3DExtras::QOrbitCameraController)

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

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

Properties

Public Functions

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

Signals

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

Additional Inherited Members

Detailed Description

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

The controls are:

InputAction
Left mouse buttonWhile 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 buttonWhile 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 buttonWhile 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.
Arrow keysMove the camera vertically and horizontally relative to camera viewport.
Page up and page down keysMove the camera forwards and backwards.
Shift keyChanges 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 keyChanges the behovior of the arrow keys to pan and tilt the camera around the view center. Disables the page up and page down keys.

Property Documentation

camera : Qt3DRender::QCamera *

Holds the currently controlled camera.

Access functions:

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

Notifier signal:

void cameraChanged()

linearSpeed : float

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

Access functions:

float linearSpeed() const
void setLinearSpeed(float linearSpeed)

Notifier signal:

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.

Access functions:

float lookSpeed() const
void setLookSpeed(float lookSpeed)

Notifier signal:

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.

Access functions:

float zoomInLimit() const
void setZoomInLimit(float zoomInLimit)

Notifier signal:

void zoomInLimitChanged()

Member Function Documentation

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

Default constructs an instance of QOrbitCameraController.

QOrbitCameraController::~QOrbitCameraController()

Destroys the instance of QOrbitCameraController.

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