com.introlab.rtabmap.DisplayRotationHelper Class Reference

Inheritance diagram for com.introlab.rtabmap.DisplayRotationHelper:

Public Member Functions
	DisplayRotationHelper (Context context)
float	getCameraSensorRelativeViewportAspectRatio (String cameraId)
int	getCameraSensorToDisplayRotation (String cameraId)
void	onDisplayAdded (int displayId)
void	onDisplayChanged (int displayId)
void	onDisplayRemoved (int displayId)
void	onPause ()
void	onResume ()
void	onSurfaceChanged (int width, int height)
void	updateSessionIfNeeded (ARCoreSharedCamera session)

Private Member Functions
int	toDegrees (int rotation)

Private Attributes
final CameraManager	cameraManager
final Display	display
final DisplayManager	displayManager
boolean	viewportChanged
int	viewportHeight
int	viewportWidth

Detailed Description

Helper to track the display rotations. In particular, the 180 degree rotations are not notified by the onSurfaceChanged() callback, and thus they require listening to the android display events.

Definition at line 36 of file DisplayRotationHelper.java.

Constructor & Destructor Documentation

DisplayRotationHelper()

com.introlab.rtabmap.DisplayRotationHelper.DisplayRotationHelper ( Context  context )

inline

Constructs the DisplayRotationHelper but does not register the listener yet.

Parameters

context

the Android Context.

Definition at line 49 of file DisplayRotationHelper.java.

Member Function Documentation

getCameraSensorRelativeViewportAspectRatio()

float com.introlab.rtabmap.DisplayRotationHelper.getCameraSensorRelativeViewportAspectRatio ( String  cameraId )

inline

Returns the aspect ratio of the GL surface viewport while accounting for the display rotation relative to the device camera sensor orientation.

Definition at line 101 of file DisplayRotationHelper.java.

getCameraSensorToDisplayRotation()

int com.introlab.rtabmap.DisplayRotationHelper.getCameraSensorToDisplayRotation ( String  cameraId )

inline

Returns the rotation of the back-facing camera with respect to the display. The value is one of 0, 90, 180, 270.

Definition at line 123 of file DisplayRotationHelper.java.

onDisplayAdded()

void com.introlab.rtabmap.DisplayRotationHelper.onDisplayAdded ( int  displayId )

inline

Definition at line 157 of file DisplayRotationHelper.java.

onDisplayChanged()

void com.introlab.rtabmap.DisplayRotationHelper.onDisplayChanged ( int  displayId )

inline

Definition at line 163 of file DisplayRotationHelper.java.

onDisplayRemoved()

void com.introlab.rtabmap.DisplayRotationHelper.onDisplayRemoved ( int  displayId )

inline

Definition at line 160 of file DisplayRotationHelper.java.

onPause()

void com.introlab.rtabmap.DisplayRotationHelper.onPause ( )

inline

Unregisters the display listener. Should be called from Activity#onPause().

Definition at line 62 of file DisplayRotationHelper.java.

onResume()

void com.introlab.rtabmap.DisplayRotationHelper.onResume ( )

inline

Registers the display listener. Should be called from Activity#onResume().

Definition at line 57 of file DisplayRotationHelper.java.

onSurfaceChanged()

void com.introlab.rtabmap.DisplayRotationHelper.onSurfaceChanged ( int  width, int  height  )

inline

Records a change in surface dimensions. This will be later used by updateSessionIfNeeded(Session). Should be called from #onSurfaceChanged(javax.microedition.khronos.opengles.GL10, int, int).

Parameters

width	the updated width of the surface.
height	the updated height of the surface.

Definition at line 75 of file DisplayRotationHelper.java.

toDegrees()

int com.introlab.rtabmap.DisplayRotationHelper.toDegrees ( int  rotation )

inlineprivate

Definition at line 141 of file DisplayRotationHelper.java.

updateSessionIfNeeded()

void com.introlab.rtabmap.DisplayRotationHelper.updateSessionIfNeeded ( ARCoreSharedCamera  session )

inline

Updates the session display geometry if a change was posted either by onSurfaceChanged(int, int) call or by onDisplayChanged(int) system callback. This function should be called explicitly before each call to Session#update(). This function will also clear the 'pending update' (viewportChanged) flag.

Parameters

session

the Session object to update if display geometry changed.

Definition at line 89 of file DisplayRotationHelper.java.

Member Data Documentation

cameraManager

final CameraManager com.introlab.rtabmap.DisplayRotationHelper.cameraManager

private

Definition at line 42 of file DisplayRotationHelper.java.

display

final Display com.introlab.rtabmap.DisplayRotationHelper.display

private

Definition at line 40 of file DisplayRotationHelper.java.

displayManager

final DisplayManager com.introlab.rtabmap.DisplayRotationHelper.displayManager

private

Definition at line 41 of file DisplayRotationHelper.java.

viewportChanged

boolean com.introlab.rtabmap.DisplayRotationHelper.viewportChanged

private

Definition at line 37 of file DisplayRotationHelper.java.

viewportHeight

int com.introlab.rtabmap.DisplayRotationHelper.viewportHeight

private

Definition at line 39 of file DisplayRotationHelper.java.

viewportWidth

int com.introlab.rtabmap.DisplayRotationHelper.viewportWidth

private

Definition at line 38 of file DisplayRotationHelper.java.

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The documentation for this class was generated from the following file:

• DisplayRotationHelper.java