SilhouetteFate Class Reference

#include <SilhouetteFate.h>

Inheritance diagram for SilhouetteFate:

[legend]Collaboration diagram for SilhouetteFate:

[legend]List of all members.

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Detailed Description

This is the class which governs particle birth and death as described by Witkin and Heckbert with modifications to now consider the silhouette.

Particles which are large and have low energy birth new particles and particles which are overcroweded are killed.

Definition at line 24 of file SilhouetteFate.h.

Public Member Functions
	MAKE_PARTICLESTUFF_NAME ()
int	qlen ()
	parameters
void	getq (double *q)
	Get the parameters.
void	setq (double *q)
	Set particle stuff parameters.
void	qname (char **qn)
	Get the names of the parameters.
virtual void	attachAttributes ()
	SilhouetteFate (Particles *ps=NULL, ParticleBoundingBox *b=NULL, SilhouetteAdhesion *sa=NULL, std::string name=std::string("SilhouetteFate"))
	Creates a SilhouetteFate object.
double	setSurfaceDiameter (double d)
	Allows for an awareness of surface diameter.
bool	fiftyPercent ()
void	resetAge ()
void	cleanup ()
	We determine particle fate during the cleanup step.
Public Attributes
AdaptiveRepulsionData *	rep_data
	Witkin-Heckbert repulsion data.
ParticleOrientation *	p_orient
	Particle orientations.
ParticleAge *	p_age
	Age of the silhouette particles.
SilhouetteAdhesion *	sil_ad
ParticleBoundingBox *	p_bounds
	Bounding box.
double	surfaceDiameter
double	gamma
	Equilibrium speed (multiple of repulsion radius).
double	nu
	Fraction of E_hat, for fissioning.
double	delta
	Fraction of sigma_hat, for death.
int	population

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Constructor & Destructor Documentation

SilhouetteFate::SilhouetteFate (  Particles *  ps = NULL, ParticleBoundingBox *  b = NULL, SilhouetteAdhesion *  sa = NULL, std::string  name = std::string("SilhouetteFate") )

Creates a SilhouetteFate object. First it looks for the required attributes in the particle system, and then it sets default constants. Definition at line 23 of file SilhouetteFate.cpp. References delta, gamma, nu, p_bounds, population, sil_ad, surfaceDiameter, WH_DELTA, WH_GAMMA, and WH_NU.

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Member Function Documentation

void SilhouetteFate::attachAttributes (   )  [virtual]

Todo: This behavior uses data from the SilhouetteAdhesion behavior. The shared data should be made into an Attribute. Reimplemented from ParticleBehavior. Definition at line 43 of file SilhouetteFate.cpp. References ParticleStuff::attachAttribute(), ParticleBehavior::attachAttributes(), Particles::getBehavior(), p_age, p_bounds, p_orient, ParticleStuff::ps, rep_data, ParticleAge::reset(), setSurfaceDiameter(), sil_ad, and surfaceDiameter.

void SilhouetteFate::cleanup (   )  [virtual]

We determine particle fate during the cleanup step. Determine whether or not particle is to die: 1) Particle velocity is small compared to nominal repulsion radius 2) Repulsion radius is smaller than minimum repulsion radius 3) Biased random test succeds Determine whether or not to split: (Condition 1: particle is near equilibrium) AND (Condition 2a: repulsion radius is huge OR Condition 2b: particle is adequately energized and repulsion radius is higher than nominal) Reimplemented from ParticleBehavior. Definition at line 92 of file SilhouetteFate.cpp. References Particles::addParticle(), SilhouetteAdhesion::cameraMoved, delta, Particles::dt, gamma, ParticlePosition::getPosition(), ParticleBoundingBox::inBounds(), ParticleOrientation::n, p_age, p_bounds, p_orient, population, ParticleBehavior::position, ParticleStuff::ps, psRandom(), AdaptiveRepulsionData::r, randOrtho(), Particles::removeParticle(), rep_data, ParticleAge::reset(), ParticlePosition::setPosition(), setSurfaceDiameter(), AdaptiveRepulsionData::sigma_hat, AdaptiveRepulsionData::sigma_max, sil_ad, Particles::size(), surfaceDiameter, ParticleAge::t, ParticleVelocity::v, and ParticleBehavior::velocity.

bool SilhouetteFate::fiftyPercent (   )

Definition at line 76 of file SilhouetteFate.cpp. References SilhouetteAdhesion::camera, dot(), ParticlePosition::getPosition(), ParticleOrientation::n, p_orient, ParticleBehavior::position, ParticleStuff::ps, sil_ad, and Particles::size().

void SilhouetteFate::getq (  double *  q  )  [virtual]

Get the parameters. Defaults to no parameters. Reimplemented from ParticleStuff. Definition at line 191 of file SilhouetteFate.cpp. References population, and surfaceDiameter.

SilhouetteFate::MAKE_PARTICLESTUFF_NAME (   )

int SilhouetteFate::qlen (   )  [virtual]

parameters Reimplemented from ParticleStuff. Definition at line 187 of file SilhouetteFate.cpp.

void SilhouetteFate::qname (  char **  qn  )  [virtual]

Get the names of the parameters. Defaults to no parameters. Reimplemented from ParticleStuff. Definition at line 201 of file SilhouetteFate.cpp.

void SilhouetteFate::resetAge (   )  [inline]

Definition at line 66 of file SilhouetteFate.h. References p_age, and ParticleAge::reset().

void SilhouetteFate::setq (  double *  q  )  [virtual]

Set particle stuff parameters. Defaults to no parameters. Reimplemented from ParticleStuff. Definition at line 196 of file SilhouetteFate.cpp. References population, and surfaceDiameter.

double SilhouetteFate::setSurfaceDiameter (  double  d  )

Allows for an awareness of surface diameter. Parameters: d  New surface rep_data->diameter. Returns: New desired readius. Definition at line 65 of file SilhouetteFate.cpp. References AdaptiveRepulsionData::diameter, rep_data, AdaptiveRepulsionData::sigma_hat, and AdaptiveRepulsionData::sigma_max. Referenced by attachAttributes(), and cleanup().

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Member Data Documentation

double SilhouetteFate::delta

Fraction of sigma_hat, for death. Definition at line 49 of file SilhouetteFate.h. Referenced by cleanup(), and SilhouetteFate().

double SilhouetteFate::gamma

Equilibrium speed (multiple of repulsion radius). Definition at line 47 of file SilhouetteFate.h. Referenced by cleanup(), and SilhouetteFate().

double SilhouetteFate::nu

Fraction of E_hat, for fissioning. Definition at line 48 of file SilhouetteFate.h. Referenced by SilhouetteFate().

ParticleAge* SilhouetteFate::p_age

Age of the silhouette particles. Definition at line 31 of file SilhouetteFate.h. Referenced by attachAttributes(), cleanup(), and resetAge().

ParticleBoundingBox* SilhouetteFate::p_bounds

Bounding box. Definition at line 35 of file SilhouetteFate.h. Referenced by attachAttributes(), cleanup(), and SilhouetteFate().

ParticleOrientation* SilhouetteFate::p_orient

Particle orientations. Definition at line 30 of file SilhouetteFate.h. Referenced by attachAttributes(), cleanup(), and fiftyPercent().

int SilhouetteFate::population

Definition at line 50 of file SilhouetteFate.h. Referenced by cleanup(), getq(), setq(), and SilhouetteFate().

AdaptiveRepulsionData* SilhouetteFate::rep_data

Witkin-Heckbert repulsion data. Definition at line 29 of file SilhouetteFate.h. Referenced by attachAttributes(), cleanup(), and setSurfaceDiameter().

SilhouetteAdhesion* SilhouetteFate::sil_ad

Definition at line 32 of file SilhouetteFate.h. Referenced by attachAttributes(), cleanup(), fiftyPercent(), and SilhouetteFate().

double SilhouetteFate::surfaceDiameter

Definition at line 45 of file SilhouetteFate.h. Referenced by attachAttributes(), cleanup(), getq(), setq(), and SilhouetteFate().

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

• SilhouetteFate.h
• SilhouetteFate.cpp

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