NL3D::CPSBrownianForce Class Reference

A Brownian motion. More...

#include <ps_force.h>

Public Member Functions
	CPSBrownianForce (float intensity=1.f)
	==========================================================
virtual void	serial (NLMISC::IStream &f) throw (NLMISC::EStream)
	=======================================================================
virtual bool	isIntegrable (void) const
	We provide a kind of integration on a predefined sequence.
virtual void	integrate (float date, CPSLocated src, uint32 startIndex, uint32 numObjects, NLMISC::CVector destPos=NULL, NLMISC::CVector *destSpeed=NULL, bool accumulate=false, uint posStride=sizeof(NLMISC::CVector), uint speedStride=sizeof(NLMISC::CVector)) const
	==========================================================
virtual void	integrateSingle (float startDate, float deltaT, uint numStep, const CPSLocated src, uint32 indexInLocated, NLMISC::CVector destPos, bool accumulate=false, uint posStride=sizeof(NLMISC::CVector)) const
	==========================================================
void	setIntensity (float value)
	==========================================================
void	setIntensityScheme (CPSAttribMaker< float > *scheme)
	==========================================================
virtual void	computeForces (CPSLocated &target)
	Compute the force on the targets.
void	show ()
	Show the force (edition mode).
void	setParametricFactor (float factor)
	When used with parametric integration, this tells factor tells how fast the force acts on particle (how fast it go through the lookup table in fact).
float	getParametricFactor () const
Static Public Member Functions
static void	initPrecalc ()
	perform initialisations
Protected Member Functions
virtual CPSLocated *	getForceIntensityOwner (void)
	deriver must return the located that own them here
virtual void	newElement (const CPSEmitterInfo &info)
	Generate a new element for this bindable.
virtual void	deleteElement (uint32 index)
	Delete an element given its index Attributes of the located that hold this bindable are still accessible for of the index given index out of range -> nl_assert.
virtual void	resize (uint32 size)
	Resize the bindable attributes containers DERIVERS SHOULD CALL THEIR PARENT VERSION should not be called directly.
Protected Attributes
float	_ParametricFactor
Static Protected Attributes
static NLMISC::CVector	PrecomputedPos []
	used to avoid to have to call rand for each particle the force applies on...
static NLMISC::CVector	PrecomputedSpeed []
static NLMISC::CVector	PrecomputedImpulsions []
	various impulsion for normal motion

Detailed Description

A Brownian motion.

Definition at line 573 of file ps_force.h.

Constructor & Destructor Documentation

NL3D::CPSBrownianForce::CPSBrownianForce ( float intensity = 1.f )

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Definition at line 1020 of file ps_force.cpp.

References NL3D::CPSLocatedBindable::_Name, NL3D::CParticleSystem::getSerializeIdentifierFlag(), NL_PS_FUNC, and setIntensity().

Member Function Documentation

void NL3D::CPSBrownianForce::computeForces ( CPSLocated & target ) [virtual]

Compute the force on the targets.

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start at a random position in the precomp impulsion tab

Implements NL3D::CPSForce.

Definition at line 1309 of file ps_force.cpp.

References NL3D::CPSForceIntensity::_IntensityScheme, NL3D::CPSForceIntensity::_K, NL3D::CPSLocatedBindable::_Owner, NL3D::CPSAttrib< T >::begin(), NL3D::BFNumPrecomputedImpulsions, NL3D::CParticleSystem::EllapsedTime, NL3D::CPSAttribMaker< T >::get(), NL3D::CPSLocated::getInitialMass(), NL3D::CPSLocated::getInvMass(), NL3D::CPSLocated::getMassScheme(), NL3D::CPSLocated::getSize(), NL3D::CPSLocated::getSpeed(), NL3D::CParticleSystem::InsideSimLoop, min, NL_PS_FUNC, nlassert, PrecomputedImpulsions, NLMISC::CVector::x, and NLMISC::CVector::y.

virtual void NL3D::CPSBrownianForce::deleteElement ( uint32 index ) [inline, protected, virtual]

Delete an element given its index Attributes of the located that hold this bindable are still accessible for of the index given index out of range -> nl_assert.

Reimplemented from NL3D::CPSForceIntensityHelper.

Definition at line 618 of file ps_force.h.

References NL3D::CPSForceIntensity::deleteForceIntensityElement().

virtual CPSLocated* NL3D::CPSBrownianForce::getForceIntensityOwner ( void ) [inline, protected, virtual]

deriver must return the located that own them here

Reimplemented from NL3D::CPSForceIntensityHelper.

Definition at line 616 of file ps_force.h.

References NL3D::CPSLocatedBindable::_Owner.

float NL3D::CPSBrownianForce::getParametricFactor ( ) const [inline]

Definition at line 613 of file ps_force.h.

References _ParametricFactor.

void NL3D::CPSBrownianForce::initPrecalc ( ) [static]

perform initialisations

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create the pos table

Definition at line 1221 of file ps_force.cpp.

References NL3D::BFNumPrecomputedImpulsions, NL3D::BFNumPredefinedPos, NL3D::BFPredefinedNumInterp, NLMISC::frand(), NL_PS_FUNC, nlassert, NLMISC::CVector::Null, PrecomputedImpulsions, PrecomputedPos, PrecomputedSpeed, and NLMISC::CVector::set().

Referenced by NL3D::CPSUtil::registerForces().

void NL3D::CPSBrownianForce::integrate	(	float	date,
		CPSLocated *	src,
		uint32	startIndex,
		uint32	numObjects,
		NLMISC::CVector *	destPos = `NULL`,
		NLMISC::CVector *	destSpeed = `NULL`,
		bool	accumulate = `false`,
		uint	posStride = `sizeof(NLMISC::CVector)`,
		uint	speedStride = `sizeof(NLMISC::CVector)`
	)			const `[virtual]`

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MASS DIFFERENT FROM 1 IS NOT SUPPORTED

Reimplemented from NL3D::CPSForce.

Definition at line 1037 of file ps_force.cpp.

References NL3D::CPSForceIntensity::_K, _ParametricFactor, NL3D::CPSLocated::_PInfo, NL3D::CPSAttrib< T >::begin(), NL3D::BFNumPredefinedPos, NEXT_POS, NEXT_SPEED, NL_PS_FUNC, PrecomputedPos, PrecomputedSpeed, NLMISC::CVector::set(), NLMISC::CVector::x, NLMISC::CVector::y, and NLMISC::CVector::z.

void NL3D::CPSBrownianForce::integrateSingle	(	float	startDate,
		float	deltaT,
		uint	numStep,
		const CPSLocated *	src,
		uint32	indexInLocated,
		NLMISC::CVector *	destPos,
		bool	accumulate = `false`,
		uint	posStride = `sizeof(NLMISC::CVector)`
	)			const `[virtual]`