MultipoleMoments Class Reference

A representation of a multipole expansion. More...

#include <MultipoleMoments.h>

Public Member Functions
MultipoleMoments &	operator+= (const MultipoleMoments &m)
	Add two expansions together, using parallel axis theorem.
template<typename ParticleType>
MultipoleMoments &	operator+= (const ParticleType &p)
	Add the contribution of a particle to this multipole expansion.
MultipoleMoments	operator- (const MultipoleMoments &m)
	Subtract an expansion from this larger one, yielding the leftover.
void	clear ()
	Reset this expansion to nothing.
cosmoType	getRadius () const
void	setRadius (cosmoType r)

Public Attributes
cosmoType	soft
cosmoType	totalMass
	The total mass represented by this expansion.
Vector3D< cosmoType >	cm
	The center of mass (zeroth order multipole)
FMOMR	mom

Friends
class	CudaMultipoleMoments
	Version of MultipoleMoments using cudatype.
void	operator| (PUP::er &p, MultipoleMoments &m)
void	calculateRadiusFarthestCorner (MultipoleMoments &m, const OrientedBox< double > &box)
	Given an enclosing box, set the multipole expansion size to the distance from the center of mass to the farthest corner of the box.
template<typename ParticleType>
void	calculateRadiusFarthestParticle (MultipoleMoments &m, const ParticleType *begin, const ParticleType *end)
	Given the positions that make up a multipole expansion, set the distance to the farthest particle from the center of mass.
void	calculateRadiusBox (MultipoleMoments &m, const OrientedBox< double > &box)
template<typename ParticleType>
void	calculateRadiusFirstParticle (MultipoleMoments &m, const ParticleType *begin, const ParticleType *end)

Detailed Description

A representation of a multipole expansion.

Friends And Related Symbol Documentation

calculateRadiusBox

void calculateRadiusBox ( MultipoleMoments & m, const OrientedBox< double > & box )

friend

Given an enclosing box, set the multipole expansion size to the distance from the center of the box to the farthest corner of the box

calculateRadiusFirstParticle

template<typename ParticleType>

void calculateRadiusFirstParticle ( MultipoleMoments & m, const ParticleType * begin, const ParticleType * end )

friend

Given list of particles, get a radius based on the first particle. N.B. this is a failover in case the box size is tiny. We assume the multipole moments have not been calculated.

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

• MultipoleMoments.h