makVrv::DtOsgParticleRibbon Class Reference

A ribbon with some particle system features, such as expansion rate texture, and fading out. More...

Inheritance diagram for makVrv::DtOsgParticleRibbon:

Classes
struct	Particle
	Definition for a particle in the ribbon. More...

Public Member Functions
	DtOsgParticleRibbon (DtDe &de, float segmentSpacing, const osg::Vec4 &color, osg::Texture *texture, float expansionRate, float maxLength=2000)
	CTOR.
virtual void	update (double dt, double simTime)
	Override the behavior of the osg ribbon.
virtual void	setAlphaVelocity (float alphaVelocity)
	Set the rate in units/second at which the alpha values of particles change.
virtual void	setTextureRepeat (float textureRepeat)
	Set the number of copies of the texture to repeat into each quad.
virtual void	setNewParticlesVisible (bool enable)
	If true then particles are created normally.
Public Member Functions inherited from makVrv::DtOsgRibbon
	DtOsgRibbon (DtDe &de, float segmentSpacing=1.0, const osg::Vec4 &color=osg::Vec4d(0.5, 0.5, 0.5, 1.0), float maxLength=2000)
	CTOR.
virtual	~DtOsgRibbon ()
	DTOR.
virtual void	traverse (osg::NodeVisitor &nv)
	Interrupt CullVisitors by updating the ribbon.
virtual osg::Node *	node ()
	Get the osg geometry node associated with the ribbon.
virtual void	setColor (const osg::Vec4 &color)
	Set the ribbon's color.
const osg::Vec4 &	color () const
	Get the ribbon's color.
virtual void	setDroppedPoints (const osg::Vec3d &pointA, const osg::Vec3d &pointB)
	Set the points to drop in local coordinates.
virtual void	update ()
	Optional time independent update method.
virtual void	setMaxSegments (long segments)
	Sets the maximum number of segments allowed in the ribbon.
long	maxSegments () const
	Gets the maximum number of segments allowed in the ribbon.
virtual void	setSegmentSpacing (float spacing)
	Sets the maximum length of ribbon segments.
float	segmentSpacing () const
	Gets the maximum length of the ribbon segments.
virtual void	setStippled (bool stippled)
bool	isStippled () const
	Get the stipple setting for this ribbon.
virtual void	setLightingEnabled (bool enable)
	set to true the lighting enabled flag to turn lighting on for the ribbon
virtual bool	lightingEnabled ()
	get the lighting enabled flag

Protected Types
typedef std::list< Particle >	Particles

Protected Member Functions
virtual	~DtOsgParticleRibbon ()
	DTOR.
virtual void	addParticle (osg::Vec3d const &left, osg::Vec3d const &right, double simTime)
	Add a particle to the ribbon.
virtual float	currentSegmentLength ()
	Find the length of the current ribbon segment.
virtual void	extendCurrentSegment (osg::Vec3d const &left, osg::Vec3d const &right, double simTime)
	Extend the current segment to left and right points.
virtual osg::Drawable *	getDrawable ()
	Create or get the ribbon drawable.
virtual int	particleIndexAtOffset (int offset)
	Get index of particle at offset from current particle.
virtual void	updateParticles (double dt)
	Update the particles with given time change.
virtual void	updateGeometry (double dt)
	Update the geometry with the given time change.
virtual osg::Vec2	getTextureCoordinateFor (int pointIndex, float vScale)
	Get the texture coordinate for a vertex.
virtual osg::Geode *	createGeode ()
	Create the geode to reender the ribbon.
Protected Member Functions inherited from makVrv::DtOsgRibbon
virtual void	setDrawable ()
	Removes any existing drawables and add the drawable returned from getDrawable.

Protected Attributes
osg::ref_ptr< osg::Vec3Array >	myPoints
osg::ref_ptr< osg::Vec4Array >	myColors
osg::ref_ptr< osg::Vec2Array >	myTextureCoordinates
osg::ref_ptr< osg::Texture >	myTexture
bool	myWrappingVertices
int	myParticleIndex
float	myTextureRepeat
double	myLastAddTime
Particles	myParticles
float	myAlphaVelocity
float	myExpansionRate
	speed at which alpha decreases
float	myRotationalVelocity
	speed at which particles move apart
double	myLastUpdateTime
bool	myNewParticleVisible

Detailed Description

A ribbon with some particle system features, such as expansion rate texture, and fading out.

Member Typedef Documentation

typedef std::list<Particle> makVrv::DtOsgParticleRibbon::Particles

protected

Constructor & Destructor Documentation

makVrv::DtOsgParticleRibbon::DtOsgParticleRibbon	(	DtDe &	de,
		float	segmentSpacing,
		const osg::Vec4 &	color,
		osg::Texture *	texture,
		float	expansionRate,
		float	maxLength = 2000
	)

CTOR.

virtual makVrv::DtOsgParticleRibbon::~DtOsgParticleRibbon ( )

protectedvirtual

DTOR.

Member Function Documentation

virtual void makVrv::DtOsgParticleRibbon::update ( double  dt, double  simTime  )

virtual

Override the behavior of the osg ribbon.

Reimplemented from makVrv::DtOsgRibbon.

virtual void makVrv::DtOsgParticleRibbon::setAlphaVelocity ( float  alphaVelocity )

virtual

Set the rate in units/second at which the alpha values of particles change.

virtual void makVrv::DtOsgParticleRibbon::setTextureRepeat ( float  textureRepeat )

virtual

Set the number of copies of the texture to repeat into each quad.

Textures are tiled in their v coordinate only.

virtual void makVrv::DtOsgParticleRibbon::setNewParticlesVisible ( bool  enable )

virtual

If true then particles are created normally.

If false than all new particles have an alpha of 0 so they are still created but not visible and the transition from off to on is not a sudden one.

virtual void makVrv::DtOsgParticleRibbon::addParticle ( osg::Vec3d const &  left, osg::Vec3d const &  right, double  simTime  )

protectedvirtual

Add a particle to the ribbon.

Implements makVrv::DtOsgRibbon.

virtual float makVrv::DtOsgParticleRibbon::currentSegmentLength ( )

protectedvirtual

Find the length of the current ribbon segment.

Implements makVrv::DtOsgRibbon.

virtual void makVrv::DtOsgParticleRibbon::extendCurrentSegment ( osg::Vec3d const &  left, osg::Vec3d const &  right, double  simTime  )

protectedvirtual

Extend the current segment to left and right points.

Implements makVrv::DtOsgRibbon.

virtual osg::Drawable* makVrv::DtOsgParticleRibbon::getDrawable ( )

protectedvirtual

Create or get the ribbon drawable.

Implements makVrv::DtOsgRibbon.

virtual int makVrv::DtOsgParticleRibbon::particleIndexAtOffset ( int  offset )

protectedvirtual

Get index of particle at offset from current particle.

virtual void makVrv::DtOsgParticleRibbon::updateParticles ( double  dt )

protectedvirtual

Update the particles with given time change.

virtual void makVrv::DtOsgParticleRibbon::updateGeometry ( double  dt )

protectedvirtual

Update the geometry with the given time change.

virtual osg::Vec2 makVrv::DtOsgParticleRibbon::getTextureCoordinateFor ( int  pointIndex, float  vScale  )

protectedvirtual

Get the texture coordinate for a vertex.

virtual osg::Geode* makVrv::DtOsgParticleRibbon::createGeode ( )

protectedvirtual

Create the geode to reender the ribbon.

Reimplemented from makVrv::DtOsgRibbon.

Member Data Documentation

osg::ref_ptr<osg::Vec3Array> makVrv::DtOsgParticleRibbon::myPoints

protected

osg::ref_ptr<osg::Vec4Array> makVrv::DtOsgParticleRibbon::myColors

protected

osg::ref_ptr<osg::Vec2Array> makVrv::DtOsgParticleRibbon::myTextureCoordinates

protected

osg::ref_ptr<osg::Texture> makVrv::DtOsgParticleRibbon::myTexture

protected

bool makVrv::DtOsgParticleRibbon::myWrappingVertices

protected

int makVrv::DtOsgParticleRibbon::myParticleIndex

protected

float makVrv::DtOsgParticleRibbon::myTextureRepeat

protected

double makVrv::DtOsgParticleRibbon::myLastAddTime

protected

Particles makVrv::DtOsgParticleRibbon::myParticles

protected

float makVrv::DtOsgParticleRibbon::myAlphaVelocity

protected

float makVrv::DtOsgParticleRibbon::myExpansionRate

protected

speed at which alpha decreases

float makVrv::DtOsgParticleRibbon::myRotationalVelocity

protected

speed at which particles move apart

double makVrv::DtOsgParticleRibbon::myLastUpdateTime

protected

bool makVrv::DtOsgParticleRibbon::myNewParticleVisible

protected

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

• /exports/nfedora7-1/nightly/docs/vrforcesDevelopment.tot/include/vrvOsg/DtOsgParticleRibbon.h