this class is used to create an effect around the eye to represent blowing particle effects such as sand. The effect is made from a particle system with simple wind physics applied. Effects can be added to a ground fog area. Each effect is initialized with a fixed particle count, particle size, and effect radius around the eye. Note that sandstorms also make use of this effect class.

Classes
struct	DrawData

struct	MeshGroup

struct	Particle

struct	SortJobData

Public Member Functions
	DtGroundFogEffect (makVrv::DtDe &de)

virtual	~DtGroundFogEffect ()

virtual void	init (int particleCount, float particleSize, float radius)

virtual void	releaseGLObjects (osg::State *state) const

virtual void	draw (DtGroundFogEffect::DrawData &drawData, const osg::Vec3 &baseColor) const

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

virtual void	setEnable (bool enable)

virtual void	setWind (float windDirectionRad, float windSpeedMps)

virtual void	setWindSpeedMultiplier (float multiplier)

virtual void	setWindLiftMultiplier (float multiplier)

virtual void	setWindTurbulence (float multiplier)

virtual void	setDensity (float density)

virtual void	setEffectFade (float fade)

virtual void	setIntensityPerWindRamp (float start, float end)

virtual float	computeIntensityPerWind ()

virtual void	setBasisRotation (const osg::Matrixd &rotation)

virtual void	setColorMult (float r, float g, float b)

virtual float	radius () const

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

Protected Member Functions
virtual void	connectSignals ()

virtual void	disconnectSignals ()

virtual void	slot_simulationUpdate ()

virtual void	computeSortDepth (const osg::Vec3 &reference)

virtual void	fillSortedParticles ()

virtual bool	bindMeshGroupData (MeshGroup *meshGroup, osg::RenderInfo &renderInfo) const

virtual bool	bindDynamicMeshGroupData (MeshGroup *meshGroup, osg::RenderInfo &renderInfo) const

virtual bool	bindVaoToMeshGroup (GLuint vao, MeshGroup *meshGroup, osg::RenderInfo &renderInfo) const

virtual void	simulateParticles (float timeStep, double currentTime)

void	wrapPosition (float &posX, float &posY, float &posZ)

Protected Attributes
DtDe &	myDe

osg::Matrixd	myBasisRot

bool	myEnable

osg::Vec3	myScroll

float	myRadius

float	myWindDirectionRad

float	myWindSpeedMps

float	myWindSpeedMultiplier

float	myWindLiftMultiplier

float	myWindTurbulence

double	myLastTime

float	myEffectFade

float	myParticleSize

osg::Vec3	myColorMult

float	mfIntensityPerWindStart

float	mfIntensityPerWindEnd

float	myDensity

MeshGroup *	myMeshGroup

DtGlVaoManager *	myVaoManager

Particle *	myParticles

int	myParticleCount

SortJobData	mySortJobData

DtJobSplitterJob	mySortJob

Private Member Functions
	DtGroundFogEffect ()

	DtGroundFogEffect (const DtGroundFogEffect &other)

DtGroundFogEffect &	operator= (const DtGroundFogEffect &other)

Static Private Member Functions
static int	theSortBackToFront (const void arg0, const void arg1)

static void	theSortJob (void *data)

Constructor & Destructor Documentation

makVrv::DtGroundFogEffect::DtGroundFogEffect ( makVrv::DtDe & de )

CTOR.

virtual makVrv::DtGroundFogEffect::~DtGroundFogEffect ( )

virtual

DTOR.

makVrv::DtGroundFogEffect::DtGroundFogEffect ( )

private

Default Constructor not implemented.

makVrv::DtGroundFogEffect::DtGroundFogEffect ( const DtGroundFogEffect & other )

private

Copy Constructor not implemented - Copy not allowed.

Member Function Documentation

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

private

Assignment Operator not implemented - Assignment not allowed.

virtual void makVrv::DtGroundFogEffect::init	(	int	particleCount,
		float	particleSize,
		float	radius
	)

virtual

Initialize the effect.

virtual void makVrv::DtGroundFogEffect::releaseGLObjects ( osg::State * state ) const

virtual

Release all gl objects used by this object.

virtual void makVrv::DtGroundFogEffect::draw	(	DtGroundFogEffect::DrawData &	drawData,
		const osg::Vec3 &	baseColor
	)		const

virtual

Issues the drawing command for the effect.

virtual void makVrv::DtGroundFogEffect::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::DtGroundFogEffect::setEnable ( bool enable )

virtual

Sets the enable flag to enable or disable the effect.

Parameters

enable The enable state to set.

virtual void makVrv::DtGroundFogEffect::setWind	(	float	windDirectionRad,
		float	windSpeedMps
	)

virtual

Sets the current wind.

Parameters

windDirectionRad	The wind direction in radians.
windSpeedMps	The wind speed in meters per second.

virtual void makVrv::DtGroundFogEffect::setWindSpeedMultiplier ( float multiplier )

virtual

Sets a wind speed multiplier used for particle physics.

Parameters

multiplier The multiplier value.

virtual void makVrv::DtGroundFogEffect::setWindLiftMultiplier ( float multiplier )

virtual

Sets a wind lift multiplier used for particle physics.

Parameters

multiplier The lift multiplier value can be positive (up) or negative (down).

virtual void makVrv::DtGroundFogEffect::setWindTurbulence ( float multiplier )

virtual

Sets a wind turbulence multiplier for particle physics.

Parameters

multiplier The multiplier value (basically height deviation in meters).

virtual void makVrv::DtGroundFogEffect::setDensity ( float density )

virtual

Sets a density value to control exp2 distance thickness (generally <= 1.0). The higher the density, the more the effect becomes apparent closer to the eye.

virtual void makVrv::DtGroundFogEffect::setEffectFade ( float fade )

virtual

Sets a (0.0 - 1.0) value to control the effect fade.

virtual void makVrv::DtGroundFogEffect::setIntensityPerWindRamp	(	float	start,
		float	end
	)

virtual

Sets an intensity ramp based on wind speed.

Parameters

start	The starting wind speed in mps. (no effect)
end	The ending wind speed in mps. (full effect)

virtual float makVrv::DtGroundFogEffect::computeIntensityPerWind ( )

virtual

Returns an intensity (0.0 - 1.0) based on current wind and wind ramp.

virtual void makVrv::DtGroundFogEffect::setBasisRotation ( const osg::Matrixd & rotation )

virtual

Sets the current basis rotation used for earth calculations.

virtual void makVrv::DtGroundFogEffect::setColorMult	(	float	r,
		float	g,
		float	b
	)

virtual

Sets a base color color multiplier.

Parameters

(r,g,b) The r,g,b multiplier values.

virtual float makVrv::DtGroundFogEffect::radius ( ) const

virtual

Returns the radius of the effect.

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

virtual

Sorts particles for the current view. Fills indice buffer.

Parameters

localCamPos The local camera position.

virtual void makVrv::DtGroundFogEffect::connectSignals ( )

protectedvirtual

Connects all the signals, Non-virtural, called in the ctor.

virtual void makVrv::DtGroundFogEffect::disconnectSignals ( )

protectedvirtual

Disconnects all the signals, called in the dtor.

virtual void makVrv::DtGroundFogEffect::slot_simulationUpdate ( )

protectedvirtual

Signal handler to run a simulation update.

virtual void makVrv::DtGroundFogEffect::computeSortDepth ( const osg::Vec3 & reference )

protectedvirtual

Computes the sort depth for all cells.

virtual void makVrv::DtGroundFogEffect::fillSortedParticles ( )

protectedvirtual

Fills the gpu buffer with sorted particle data.

virtual bool makVrv::DtGroundFogEffect::bindMeshGroupData	(	MeshGroup *	meshGroup,
		osg::RenderInfo &	renderInfo
	)		const

protectedvirtual

Binds the mesh group data to the vbo's.

Parameters

meshGroup	The mesh group object to bind.
renderInfo	The current rendering info.

virtual bool makVrv::DtGroundFogEffect::bindDynamicMeshGroupData	(	MeshGroup *	meshGroup,
		osg::RenderInfo &	renderInfo
	)		const

protectedvirtual

Binds the dynamic mesh group data to the vbo's.

Parameters

meshGroup	The mesh group object to bind.
renderInfo	The current rendering info.

virtual bool makVrv::DtGroundFogEffect::bindVaoToMeshGroup	(	GLuint	vao,
		MeshGroup *	meshGroup,
		osg::RenderInfo &	renderInfo
	)		const

protectedvirtual

Binds the given voa to vbo's for a mesh group.

Parameters

vao	The GL VAO handle.
meshGroup	The mesh group to bind.
renderInfo	The current rendering info.

virtual void makVrv::DtGroundFogEffect::simulateParticles	(	float	timeStep,
		double	currentTime
	)

protectedvirtual

Simulates particle life (movements, etc...).

timeStep The change in time. currentTime The current simulation time.

void makVrv::DtGroundFogEffect::wrapPosition	(	float &	posX,
		float &	posY,
		float &	posZ
	)

protected

Keeps the given position in the effect radius.

posX The X position to constrain. posY The Y position to constrain. posZ The Z position to constrain.

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

staticprivate

sort function used for qsorting particles

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

staticprivate

sort job function used as a callback for job splitting

Member Data Documentation

DtDe& makVrv::DtGroundFogEffect::myDe

protected

osg::Matrixd makVrv::DtGroundFogEffect::myBasisRot

protected

bool makVrv::DtGroundFogEffect::myEnable

protected

osg::Vec3 makVrv::DtGroundFogEffect::myScroll

protected

float makVrv::DtGroundFogEffect::myRadius

protected

float makVrv::DtGroundFogEffect::myWindDirectionRad

protected

float makVrv::DtGroundFogEffect::myWindSpeedMps

protected

float makVrv::DtGroundFogEffect::myWindSpeedMultiplier

protected

float makVrv::DtGroundFogEffect::myWindLiftMultiplier

protected

float makVrv::DtGroundFogEffect::myWindTurbulence

protected

double makVrv::DtGroundFogEffect::myLastTime

protected

float makVrv::DtGroundFogEffect::myEffectFade

protected

float makVrv::DtGroundFogEffect::myParticleSize

protected

osg::Vec3 makVrv::DtGroundFogEffect::myColorMult

protected

float makVrv::DtGroundFogEffect::mfIntensityPerWindStart

protected

float makVrv::DtGroundFogEffect::mfIntensityPerWindEnd

protected

float makVrv::DtGroundFogEffect::myDensity

protected

MeshGroup* makVrv::DtGroundFogEffect::myMeshGroup

protected

DtGlVaoManager* makVrv::DtGroundFogEffect::myVaoManager

protected

Particle* makVrv::DtGroundFogEffect::myParticles

protected

int makVrv::DtGroundFogEffect::myParticleCount

protected

SortJobData makVrv::DtGroundFogEffect::mySortJobData

protected

DtJobSplitterJob makVrv::DtGroundFogEffect::mySortJob

protected

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

/data/exports/nrhent7-1/nightly/docs/vrForces.vrf5-0-branch/include/vrvOsg/DtGroundFogEffect.h

Classes

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Static Private Member Functions

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation