TissueForge::Particle Struct Reference

#include <tfParticle.h>

Inheritance diagram for TissueForge::Particle:

Collaboration diagram for TissueForge::Particle:

Public Member Functions
struct ParticleHandle *	handle ()
	Get a handle for this particle.
HRESULT	addpart (int32_t uid)
HRESULT	removepart (int32_t uid)
Particle *	particle (int i)
FVector3	global_position ()
	Get the global position.
void	set_global_position (const FVector3 &pos)
	Set the global position.
bool	verify ()
	operator Cluster * ()
	Cast to a cluster type. Limits casting to cluster by type.
std::string	toString ()
	Get a JSON string representation.

Static Public Member Functions
static Particle *	fromString (const std::string &str)
	Create from a JSON string representation.

Public Attributes
union {
FPTYPE   f [4]
FVector3   force
struct {
FPTYPE   __dummy0 [3]
FPTYPE   number_density
}
};
union {
FVector3   force_i
};
union {
FPTYPE   v [4]
FVector3   velocity
struct {
FPTYPE   __dummy1 [3]
FPTYPE   inv_number_density
}
};
union {
FPTYPE   x [4]
FVector3   position
struct {
FPTYPE   __dummy2 [3]
uint32_t   creation_time
}
};
union {
FVector3   persistent_force
};
FPTYPE	imass
FPTYPE	radius
FPTYPE	mass
FPTYPE	q
FVector3	p0
FVector3	v0
FVector3	xk [4]
FVector3	vk [4]
int	id
int	vid
int16_t	typeId
int32_t	clusterId
uint16_t	flags
struct ParticleHandle *	_handle
int32_t *	parts
uint16_t	nr_parts
uint16_t	size_parts
rendering::Style *	style
struct state::StateVector *	state_vector

Detailed Description

The particle data structure.

Instance vars for each particle.

Note that the arrays for x, v and f are 4 entries long for proper alignment.

All particles are stored in a series of contiguous blocks of memory that are owned by the space cells. Each space cell has a array of particle structs.

If you're building a model, you should probably instead be working with a ParticleHandle.

Member Function Documentation

addpart()

HRESULT TissueForge::Particle::addpart

(

int32_t

uid

)

add a particle (id) to this type

fromString()

static Particle * TissueForge::Particle::fromString ( const std::string & str )

static

Create from a JSON string representation.

The returned particle is not automatically registered with the engine.

To properly register a particle from a string, pass the string to the particle constructor of the appropriate particle type or cluster.

Parameters

str	constructor string, as returned by toString

Returns

unregistered particle

operator Cluster *()

TissueForge::Particle::operator Cluster *

(

)

Cast to a cluster type. Limits casting to cluster by type.

Returns

Cluster*

particle()

Particle * TissueForge::Particle::particle ( int i )

inline

Get the ith particle, if this particle is a cluster.

removepart()

HRESULT TissueForge::Particle::removepart

(

int32_t

uid

)

removes a particle from this cluster. Sets the particle cluster id to -1, and removes if from this cluster's list.

verify()

bool TissueForge::Particle::verify

(

)

performs a self-verify, in debug mode raises assertion if not valid

Member Data Documentation

[union]

union { ... } TissueForge::Particle

Particle position

[union]

union { ... } TissueForge::Particle

Random force.

[union]

union { ... } TissueForge::Particle

Particle force

ONLY the coherent part of the force should go here. We use multi-step integrators, that need to separate the random and coherent forces.

Force gets cleared each step, along with number density.

[union]

union { ... } TissueForge::Particle

Initial particle force

At each step, the total force acting on a particle is reset to this settable value.

[union]

union { ... } TissueForge::Particle

Particle velocity

_handle

struct ParticleHandle* TissueForge::Particle::_handle

pointer to the handle.

Particle data gets moved around between cells, and the handle provides a safe way to retrieve them.

clusterId

int32_t TissueForge::Particle::clusterId

Cluster id of this part

flags

uint16_t TissueForge::Particle::flags

Particle flags

id

int TissueForge::Particle::id

Particle id, virtual id TODO: not sure what virtual id is...

imass

FPTYPE TissueForge::Particle::imass

Inverse mass

mass

FPTYPE TissueForge::Particle::mass

Particle mass

nr_parts

uint16_t TissueForge::Particle::nr_parts

number of particle ids that belong to this particle, if it is a cluster.

parts

int32_t* TissueForge::Particle::parts

list of particle ids that belong to this particle, if it is a cluster.

q

FPTYPE TissueForge::Particle::q

Individual particle charge, if needed

radius

FPTYPE TissueForge::Particle::radius

Particle radius

size_parts

uint16_t TissueForge::Particle::size_parts

size of particle ids that belong to this particle, if it is a cluster.

state_vector

struct state::StateVector* TissueForge::Particle::state_vector

optional pointer to state vector

Set at construction time when species are present in a simulation.

style

rendering::Style* TissueForge::Particle::style

Style pointer, set at object construction time. Can be set by the user after construction. The base particle type has a default style.

typeId

int16_t TissueForge::Particle::typeId

Particle type id

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

• source/mdcore/include/tfParticle.h
• source/mdcore/include/tfEngine.h