an object used to represent 1 patch of a patchy ground fog system. More...

Classes
struct	Cell
	a cell in the voxel grid More...

struct	SortJobData
	a structure to hold data for a sorting job More...

Public Member Functions
	DtGroundFogPatch ()
	CTOR. More...

virtual	~DtGroundFogPatch ()
	DTOR. More...

virtual void	init (int gridSize, float patchSize)
	Initialize the patch. More...

virtual void	draw (osg::RenderInfo &renderInfo) const
	Issues the drawing command for the patch. More...

virtual void	updateAlphaFade (double time)
	Updates alpha fade based on time. More...

virtual void	cullUpdate (const osg::Vec3d &camPos, DtJobSplitter *jobSplitter)
	Prepares the patch for drawing bsed on the camera position. More...

virtual void	setTransform (const osg::Vec3d &position)
	Sets the transform for the patch. More...

virtual const osg::Vec3d &	position () const
	Returns the position of the patch transform. More...

virtual const float *	skeleton () const
	Returns the skeletal grid used to bend the patch mesh. More...

virtual void	getBonePosition (int boneIndex, float patchSize, osg::Vec3d &position)
	Gets a skeletal grid bone position. More...

virtual void	setBoneHeight (int boneIndex, float height)
	Sets a skeletal grid bone height. More...

virtual void	setDesiredAlphaFade (float value)
	Sets the desired alpha fade to blend to over time. More...

virtual void	setAlphaFade (float value)
	Sets the alpha fade parameter used for lod. More...

virtual float	alphaFade () const
	Returns the alpha fade parameter used for lod. More...

virtual void	SetCulled (bool culled)
	Sets the culled state for this patch. More...

virtual bool	culled () const
	Returns the culled state for this patch. More...

virtual void	setBoneHeightExtents (float min, float max)
	Sets the computed minimum maximum bone offsets. More...

virtual void	getBoneHeightExtents (float &min, float &max)
	Gets the computed minimum maximum bone offsets. More...

virtual void	computeBoneHeightExtents ()
	Computes the minimum maximum bone offsets. More...

virtual void	runSort (const osg::Vec3 &localCamPos)
	Sorts cells for the current view. More...

Public Attributes
int	mySortDepth

Protected Member Functions
virtual void	computeSortDepth (const osg::Vec3 &camPos)
	Computes the sort depth for all cells. More...

virtual void	fillSortedIndices ()
	Fills the indice buffer with sorted indices. More...

Protected Attributes
unsigned short	myIndiceCount

unsigned short *	myIndices

Cell *	myCells

int	myCellCount

osg::Vec3d	myPosition

double	myLastTime

float	myAlphaFade

float	myAlphaFadeDesired

bool	myCulled

float	myBoneHeightMin

float	myBoneHeightMax

float	mySkeleton [9]

SortJobData	mySortJobData

DtJobSplitterJob	mySortJob

Private Member Functions
	DtGroundFogPatch (const DtGroundFogPatch &other)
	Copy Constructor not implemented - Copy not allowed. More...

DtGroundFogPatch &	operator= (const DtGroundFogPatch &other)
	Assignment Operator not implemented - Assignment not allowed. More...

void	freeData (void)
	frees resources (used in destructor) More...

Static Private Member Functions
static int	theSortBackToFront (const void arg0, const void arg1)
	sort function used for qsorting cells More...

static void	theSortJob (void *data)
	sort job function used as a callback for job splitting More...

Detailed Description

an object used to represent 1 patch of a patchy ground fog system.

The patch is made up of cells in a 2d grid. The grid can optionally use a skelatal structure to clamp and bend in order to follow the ground. Each grid cell represents a volume division and is rendered using a particle. Note that sandstorms also make use of color patchy ground fog.

Constructor & Destructor Documentation

makVrv::DtGroundFogPatch::DtGroundFogPatch ( )

CTOR.

virtual makVrv::DtGroundFogPatch::~DtGroundFogPatch ( )

virtual

DTOR.

makVrv::DtGroundFogPatch::DtGroundFogPatch ( const DtGroundFogPatch & other )

private

Copy Constructor not implemented - Copy not allowed.

Member Function Documentation

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

private

Assignment Operator not implemented - Assignment not allowed.

virtual void makVrv::DtGroundFogPatch::init	(	int	gridSize,
		float	patchSize
	)

virtual

Initialize the patch.

Parameters

gridSize	The number of cells in 1 row of the patch.
patchSize	The world space size of 1 row of the patch.

virtual void makVrv::DtGroundFogPatch::draw ( osg::RenderInfo & renderInfo ) const

virtual

Issues the drawing command for the patch.

virtual void makVrv::DtGroundFogPatch::updateAlphaFade ( double time )

virtual

Updates alpha fade based on time.

Parameters

time	The current simulation time.

virtual void makVrv::DtGroundFogPatch::cullUpdate	(	const osg::Vec3d &	camPos,
		DtJobSplitter *	jobSplitter
	)

virtual

Prepares the patch for drawing bsed on the camera position.

Parameters

camPos	The camera position in fog system space.
jobSplitter	A job splitter to add predraw jobs to.

virtual void makVrv::DtGroundFogPatch::setTransform ( const osg::Vec3d & position )

virtual

Sets the transform for the patch.

Parameters

position The transform position in fog system space.

virtual const osg::Vec3d& makVrv::DtGroundFogPatch::position ( ) const

virtual

Returns the position of the patch transform.

virtual const float* makVrv::DtGroundFogPatch::skeleton ( ) const

virtual

Returns the skeletal grid used to bend the patch mesh.

virtual void makVrv::DtGroundFogPatch::getBonePosition	(	int	boneIndex,
		float	patchSize,
		osg::Vec3d &	position
	)

virtual

Gets a skeletal grid bone position.

Parameters

boneIndex	The index of the bone to get the position for.
patchSize	The world space size of 1 row of the patch.
position	The filled out position.

virtual void makVrv::DtGroundFogPatch::setBoneHeight	(	int	boneIndex,
		float	height
	)

virtual

Sets a skeletal grid bone height.

Parameters

boneIndex	The index of the bone to set the height for.
height	The height to set.

virtual void makVrv::DtGroundFogPatch::setDesiredAlphaFade ( float value )

virtual

Sets the desired alpha fade to blend to over time.

Parameters

value The alpha value to set in the (0-1) range.

virtual void makVrv::DtGroundFogPatch::setAlphaFade ( float value )

virtual

Sets the alpha fade parameter used for lod.

Parameters

value The alpha value to set in the (0-1) range.

virtual float makVrv::DtGroundFogPatch::alphaFade ( ) const

virtual

Returns the alpha fade parameter used for lod.

virtual void makVrv::DtGroundFogPatch::SetCulled ( bool culled )

virtual

Sets the culled state for this patch.

Parameters

culled If true, the object is culled.

virtual bool makVrv::DtGroundFogPatch::culled ( ) const

virtual

Returns the culled state for this patch.

virtual void makVrv::DtGroundFogPatch::setBoneHeightExtents	(	float	min,
		float	max
	)

virtual

Sets the computed minimum maximum bone offsets.

Parameters

min	The minimum offset value.
max	The maximum offset value.

virtual void makVrv::DtGroundFogPatch::getBoneHeightExtents	(	float &	min,
		float &	max
	)

virtual

Gets the computed minimum maximum bone offsets.

Parameters

min	The minimum offset value.
max	The maximum offset value.

virtual void makVrv::DtGroundFogPatch::computeBoneHeightExtents ( )

virtual

Computes the minimum maximum bone offsets.

virtual void makVrv::DtGroundFogPatch::runSort ( const osg::Vec3 & localCamPos )

virtual

Sorts cells for the current view.

Fills indice buffer.

Parameters

localCamPos The local camera position.

virtual void makVrv::DtGroundFogPatch::computeSortDepth ( const osg::Vec3 & camPos )

protectedvirtual

Computes the sort depth for all cells.

Parameters

campPos The camera position in local patch space.

virtual void makVrv::DtGroundFogPatch::fillSortedIndices ( )

protectedvirtual

Fills the indice buffer with sorted indices.

void makVrv::DtGroundFogPatch::freeData ( void )

private

frees resources (used in destructor)

static int makVrv::DtGroundFogPatch::theSortBackToFront	(	const void *	arg0,
		const void *	arg1
	)

staticprivate

sort function used for qsorting cells

static void makVrv::DtGroundFogPatch::theSortJob ( void * data )

staticprivate

sort job function used as a callback for job splitting

Member Data Documentation

int makVrv::DtGroundFogPatch::mySortDepth

unsigned short makVrv::DtGroundFogPatch::myIndiceCount

protected

unsigned short* makVrv::DtGroundFogPatch::myIndices

protected

Cell* makVrv::DtGroundFogPatch::myCells

protected

int makVrv::DtGroundFogPatch::myCellCount

protected

osg::Vec3d makVrv::DtGroundFogPatch::myPosition

protected

double makVrv::DtGroundFogPatch::myLastTime

protected

float makVrv::DtGroundFogPatch::myAlphaFade

protected

float makVrv::DtGroundFogPatch::myAlphaFadeDesired

protected

bool makVrv::DtGroundFogPatch::myCulled

protected

float makVrv::DtGroundFogPatch::myBoneHeightMin

protected

float makVrv::DtGroundFogPatch::myBoneHeightMax

protected

float makVrv::DtGroundFogPatch::mySkeleton[9]

protected

SortJobData makVrv::DtGroundFogPatch::mySortJobData

protected

DtJobSplitterJob makVrv::DtGroundFogPatch::mySortJob

protected

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

/data/exports/nrhent7-1/nightly/docs/vrForces.vrf4-10-branch/include/vrvOsg/DtGroundFogPatch.h

Classes

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Private Member Functions

Static Private Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation