A class to manage automatic periodic updating of a height map generated from the database dynamically.

Inheritance diagram for makVrv::DtHeightMapManager:

Public Member Functions
virtual	~DtHeightMapManager ()

virtual void	setupHeightMap (void)

virtual float	heightMapResolution () const

virtual void	updateHeightCamera (unsigned int frameNum, const osg::Vec3d &currentPosition, osg::State &state)

virtual void	enableHeightMapCamera (bool enable)

virtual bool	heightCameraEnabled () const

virtual const osg::Matrix &	heightMapMatrix () const

virtual const osg::ref_ptr < osg::Texture2D >	heightMapTexture () const

virtual osg::Camera *	heightCamera ()

virtual void	postDrawFBOCallback (osg::RenderInfo &renderInfo)

virtual bool	heightMapChanged (void) const

virtual const osg::View *	osgView () const

virtual void	notifyOfReleasedObjects ()

Public Member Functions inherited from makVrv::DtKeyedDataUserData
	DtKeyedDataUserData (DtDe &de, const std::string &name)

virtual	~DtKeyedDataUserData ()

Protected Member Functions
	DtHeightMapManager (DtDe &de, const std::string &name, osg::View *&view)

virtual void	clearHeightmap ()

virtual void	updateHeightMapMatrix ()

virtual osg::Matrixd	oglRevDepthOrtho (double left, double right, double bottom, double top, double zNear, double zFar)

virtual void	computeBasis (const osg::Vec3d &inGeocentricPos, osg::Matrixd &rotOut)

virtual void	computeHeightCameraTransform (double cameraHeight, const osg::Vec3d &axisX, const osg::Vec3d &axisZ)

virtual void	computeCameraHeightAndEarthRadii (const osg::Vec3d &updatePosition, double &outCameraHeight, osg::Vec3d &outEarthRadii, double &outErrorAdjustment) const

virtual void	updateShaderUniforms (const osg::Vec3d &earthRadii, const double errorAdjustment)

virtual void	slot_oceanHeightMapTextureSizeChanged (int pixels)

virtual void	slot_oceanHeightMapResolutionChanged (float resolution)

virtual void	slot_terrainDataChanged (DtTerrainPatchObject &tpo)

virtual void	slot_wireframeModeChanged ()

virtual void	slot_coordinateSystemChanged ()

virtual int	heightMapTextureSize () const

virtual void	slot_preTick ()

virtual void	validateHeightMapTexture (unsigned int osgContextID)

Protected Attributes
friend	DtHeightMapManagerCreator

osg::Vec3d	myLastHeightReferencePos

osg::Matrixd	myHeightReferenceBasis

osg::Vec3d	myLastHeightUpdatePos

unsigned int	myHeightUpdateFrame

bool	myForceUpdate

float	myResolution

bool	mySavedPerfOverlayOn

double	myLastUpdateTime

const bool	myShadingRateIsSupported

osg::ref_ptr< osg::Texture2D >	myHeightMap

osg::ref_ptr< osg::Texture2D >	myDepthTexture

osg::Matrix	myHeightMapMatrix

int	myHeightMapDimension

osg::ref_ptr< osg::Camera >	myHeightCamera

DtSignalConnectionManager	myConnections

osg::View *	myOsgView

DtCoordinateSystem *	myCoordinateSystem = nullptr

bool	myHeightMapChanged = false

const unsigned int	myHeightCameraNodeMask

bool	myValidateHeightMapTexture

Protected Attributes inherited from makVrv::DtKeyedDataUserData
DtDe &	myDe

const std::string	myName

Private Member Functions
	DtHeightMapManager ()=delete

	DtHeightMapManager (const DtHeightMapManager &other)=delete

DtHeightMapManager &	operator= (const DtHeightMapManager &other)=delete

Additional Inherited Members
Static Protected Attributes inherited from makVrv::DtKeyedDataUserData
static std::atomic< int >	theCount

Constructor & Destructor Documentation

virtual makVrv::DtHeightMapManager::~DtHeightMapManager ( )

virtual

destructor

makVrv::DtHeightMapManager::DtHeightMapManager	(	DtDe &	de,
		const std::string &	name,
		osg::View *&	view
	)

protected

constructor

makVrv::DtHeightMapManager::DtHeightMapManager ( )

privatedelete

Default Constructor not implemented.

makVrv::DtHeightMapManager::DtHeightMapManager ( const DtHeightMapManager & other )

privatedelete

Copy Constructor not implemented – Copy Not Allowed.

Member Function Documentation

DtHeightMapManager& makVrv::DtHeightMapManager::operator= ( const DtHeightMapManager & other )

privatedelete

Assignment Operator Not implemented � Assignment Not Allowed.

virtual void makVrv::DtHeightMapManager::setupHeightMap ( void )

virtual

Sets up the height map's resources.

virtual float makVrv::DtHeightMapManager::heightMapResolution ( ) const

virtual

Gets the meters represented by one texel of the height map.

virtual void makVrv::DtHeightMapManager::updateHeightCamera	(	unsigned int	frameNum,
		const osg::Vec3d &	currentPosition,
		osg::State &	state
	)

virtual

Updates the height map as needed; call once per frame. Returns true if there is a new height map ready.

virtual void makVrv::DtHeightMapManager::enableHeightMapCamera ( bool enable )

virtual

enable/disable height map camera

virtual bool makVrv::DtHeightMapManager::heightCameraEnabled ( ) const

virtual

Returns the height camera attatched state.

virtual const osg::Matrix& makVrv::DtHeightMapManager::heightMapMatrix ( ) const

virtual

Retrieve the matrix to transform world coordinate to texture coords.

virtual const osg::ref_ptr<osg::Texture2D> makVrv::DtHeightMapManager::heightMapTexture ( ) const

virtual

Retrieve the height map itself.

virtual osg::Camera* makVrv::DtHeightMapManager::heightCamera ( )

virtual

get the height camera being used by this height map manager

virtual void makVrv::DtHeightMapManager::postDrawFBOCallback ( osg::RenderInfo & renderInfo )

virtual

Called from DtHeightMapPostDrawFBOCallback for post draw.

virtual bool makVrv::DtHeightMapManager::heightMapChanged ( void ) const

virtual

Returns whether the height map changed this tick.

virtual const osg::View* makVrv::DtHeightMapManager::osgView ( ) const

virtual

view for the camera

virtual void makVrv::DtHeightMapManager::notifyOfReleasedObjects ( )

virtual

Called from DtHeightMapSuperManager when a channel has been destroyed and so objects have been released. This will internally flag the FBO as needing to re-initialize GL texture objects due to texture sharing.

virtual void makVrv::DtHeightMapManager::clearHeightmap ( )

protectedvirtual

clean up this manager, called via destructor and slot_oceanHeightMapTextureSizeChanged

virtual void makVrv::DtHeightMapManager::updateHeightMapMatrix ( )

protectedvirtual

Helper function for updating the height map matrix.

virtual osg::Matrixd makVrv::DtHeightMapManager::oglRevDepthOrtho	(	double	left,
		double	right,
		double	bottom,
		double	top,
		double	zNear,
		double	zFar
	)

protectedvirtual

get the reverse depth buffer setup for an orthographic camera. used when reverse z is turned on.

virtual void makVrv::DtHeightMapManager::computeBasis	(	const osg::Vec3d &	inGeocentricPos,
		osg::Matrixd &	rotOut
	)

protectedvirtual

Computes a round earth basis rotation matrix for the given geocentric position.

Parameters

inGeocentricPos	The geocentric reference position.
rotOut	The computed basis rotation transform.

virtual void makVrv::DtHeightMapManager::computeHeightCameraTransform	(	double	cameraHeight,
		const osg::Vec3d &	axisX,
		const osg::Vec3d &	axisZ
	)

protectedvirtual

Computes the height camera view and projection matrices based on the given camera height and the current heightmap settings.

Parameters

cameraHeight	The height of the camera above mean sea level.
axisX	The X axis of the topo plane.
axisZ	The Z axis of the topo plane.

virtual void makVrv::DtHeightMapManager::computeCameraHeightAndEarthRadii	(	const osg::Vec3d &	updatePosition,
		double &	outCameraHeight,
		osg::Vec3d &	outEarthRadii,
		double &	outErrorAdjustment
	)		const

protectedvirtual

Computes the camera height and earth radii based on the current coordinate system and given update position.

Parameters

updatePosition	The position to compute the camera height and earth radii for.
outCameraHeight	The computed camera height above mean sea level.
outEarthRadii	The computed earth radii at the given position.
outErrorAdjustment	The computed topo vs round earth error adjustment value for the given position.

virtual void makVrv::DtHeightMapManager::updateShaderUniforms	(	const osg::Vec3d &	earthRadii,
		const double	errorAdjustment
	)

protectedvirtual

Updates the shader uniforms for the height map camera.

Parameters

earthRadii	The earth radii at the current heightmap camera position.
errorAdjustment	The topo vs round earth error adjustment value for the current position.

virtual void makVrv::DtHeightMapManager::slot_oceanHeightMapTextureSizeChanged ( int pixels )

protectedvirtual

Set the texture size length and width. The pixel value will be.

virtual void makVrv::DtHeightMapManager::slot_oceanHeightMapResolutionChanged ( float resolution )

protectedvirtual

slot for when ocean height map resolution changes

virtual void makVrv::DtHeightMapManager::slot_terrainDataChanged ( DtTerrainPatchObject & tpo )

protectedvirtual

Handles the terrain data changed signal.

virtual void makVrv::DtHeightMapManager::slot_wireframeModeChanged ( )

protectedvirtual

Handles the wireframe mode changed signal.

virtual void makVrv::DtHeightMapManager::slot_coordinateSystemChanged ( )

protectedvirtual

slot for when the coordinate system changes

virtual int makVrv::DtHeightMapManager::heightMapTextureSize ( ) const

protectedvirtual

Get the texture size length and width.

virtual void makVrv::DtHeightMapManager::slot_preTick ( )

protectedvirtual

clears the height map changed status

virtual void makVrv::DtHeightMapManager::validateHeightMapTexture ( unsigned int osgContextID )

protectedvirtual

Checks to see if the height map texture object is not valid. If it's not,.

Member Data Documentation

friend makVrv::DtHeightMapManager::DtHeightMapManagerCreator

protected

osg::Vec3d makVrv::DtHeightMapManager::myLastHeightReferencePos

protected

osg::Matrixd makVrv::DtHeightMapManager::myHeightReferenceBasis

protected

osg::Vec3d makVrv::DtHeightMapManager::myLastHeightUpdatePos

protected

unsigned int makVrv::DtHeightMapManager::myHeightUpdateFrame

protected

bool makVrv::DtHeightMapManager::myForceUpdate

protected

float makVrv::DtHeightMapManager::myResolution

protected

bool makVrv::DtHeightMapManager::mySavedPerfOverlayOn

protected

double makVrv::DtHeightMapManager::myLastUpdateTime

protected

const bool makVrv::DtHeightMapManager::myShadingRateIsSupported

protected

osg::ref_ptr<osg::Texture2D> makVrv::DtHeightMapManager::myHeightMap

protected

osg::ref_ptr<osg::Texture2D> makVrv::DtHeightMapManager::myDepthTexture

protected

osg::Matrix makVrv::DtHeightMapManager::myHeightMapMatrix

protected

int makVrv::DtHeightMapManager::myHeightMapDimension

protected

osg::ref_ptr<osg::Camera> makVrv::DtHeightMapManager::myHeightCamera

protected

DtSignalConnectionManager makVrv::DtHeightMapManager::myConnections

protected

osg::View* makVrv::DtHeightMapManager::myOsgView

protected

DtCoordinateSystem* makVrv::DtHeightMapManager::myCoordinateSystem = nullptr

protected

local clone of the system wide coordinate system. for thread safety.

bool makVrv::DtHeightMapManager::myHeightMapChanged = false

protected

const unsigned int makVrv::DtHeightMapManager::myHeightCameraNodeMask

protected

bool makVrv::DtHeightMapManager::myValidateHeightMapTexture

protected

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

/data/exports/nrhent7-1/nightly/docs/vrForces.vrf5-2-branch/include/vrvOsg/DtHeightMapManager.h

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation