GravityParticles Class Reference

Evolve particles in the gravitation field computed by the GravityEngine. More...

Inheritance diagram for GravityParticles:

Public Member Functions
double	Evolve (double evolveTime, int numBodies, GravityState gravityState)
	Evolve for the specified evolveTime using a dedicated Leapfrog integrator.
double	EvolveWithForce (double evolveTime, int numBodies, GravityState gravityState, IForceDelegate force)
	Evolves particles using massice bodies the with force delegate provided.
void	UpdateParticles (float physicalScale, GravityEngine ge)
	Updates the particles positions in world space.
void	MoveAll (ref double[] moveBy)
void	AdjustVelocity (Vector3d velAdjust)

Public Attributes
bool	addNBodyVelocity = false
	If the particle system has an NBody or NBody parent, add the velocity of the NBody to particles that are created.
Vector3	initialVelocity = Vector3.zero
	Initial velocity to be added to particles (may be over-riden by an IGravityParticlesInit script, if present)

Detailed Description

Evolve particles in the gravitation field computed by the GravityEngine.

This script is attached to a Unity ParticleSystem. Initialization of the particles may be handled by a script implementing IGravityParticleInit. Two common examples are DustBall and DustRing. If there is no init delegate the Unity particle creation will be applied.

Each instance of GravityParticles manages the gravitational evolution of it's particle system. Particles are massless (they do not affect other particles) and are evolved with a built-in Leapfrog integrator. Particles which move within the particle capture radius of an NBody are made inactive and will not be further evolved. Particles that move outside the GravityEngine horizon are also made inactive.

Member Function Documentation

Evolve()

double GravityParticles.Evolve	(	double	evolveTime,
		int	numBodies,
		GravityState	gravityState
	)

Evolve for the specified evolveTime using a dedicated Leapfrog integrator.

Evolve is called by GravityEngine on the fixed update loop. Do not call from scene scripts.

Parameters

evolveTime	Evolve time.
numBodies	Number bodies.
m	M.
r_m	R m.
size2	Size2.
info	Info.

EvolveWithForce()

double GravityParticles.EvolveWithForce	(	double	evolveTime,
		int	numBodies,
		GravityState	gravityState,
		IForceDelegate	force
	)

Evolves particles using massice bodies the with force delegate provided.

Returns

The with force.

Parameters

evolveTime	Evolve time.
numBodies	Number bodies.
m	M.
r_m	R m.
size2	Size2.
info	Info.
force	Force.

UpdateParticles()

void GravityParticles.UpdateParticles	(	float	physicalScale,
		GravityEngine	ge
	)

Updates the particles positions in world space.

UpdateParticles is called from the GravityEngine. Do not call from other scripts.

Parameters

physicalScale

Physical scale.

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

• C:/Users/musgr/Documents/Unity/gravityengine/Assets/GravityEngine/Scripts/Engine/GravityParticles.cs