#include <CUParticleSystem.h>

Public Member Functions
	ParticleEmitter ()

	ParticleEmitter (Uint64 seed)

	ParticleEmitter (const std::shared_ptr< JsonValue > &data)

Public Attributes
std::shared_ptr< Random >	generator

Vec3	position

Vec3	velocity

float	lifespan

double	interval

double	duration

double	remainder

Detailed Description

This class defines a single particle emitter.

A particle system is collection of one or more emitters. Emitters define the location, velocity, and time interval used to create particles. They also all have their own random number generator to keep behavior reproducible.

ParticleTemplates are internal to a ParticleSystem, so we do not refer to them with shared pointers. We treat them like a math class that goes on the stack.

Constructor & Destructor Documentation

◆ ParticleEmitter() [1/3]

cugl::graphics::ParticleEmitter::ParticleEmitter ( )

inline

Creates a degenerate particle emitter

No particles will be emitted until the velocity, lifespan, and time interval are set.

◆ ParticleEmitter() [2/3]

cugl::graphics::ParticleEmitter::ParticleEmitter ( Uint64 seed )

inline

Creates a particle emitter with the given random generator seed.

All other attributes will be zeroed out.

Parameters

seed	The random generator seed.

◆ ParticleEmitter() [3/3]

cugl::graphics::ParticleEmitter::ParticleEmitter ( const std::shared_ptr< JsonValue > & data )

Creates a particle emitter with the given JSON.

This initializer is designed to create a particle emitter during asset loading. This JSON format supports the following attribute values:

"random":    A long an or array of longs defining the random seed
"position":  A float array of length 3 representing the position
"velocity":  A float array of length 3 representing emission velocity
"lifespan":  A float representing particle lifespan in seconds
"internal":  A float representing the emission interval in seconds

All of these values are optional. If "random" is missing, the clock will be used for the seed. All other attributes will be zeroed out.

Parameters

data	The JSON object specifying the emitter

Member Data Documentation

◆ duration

double cugl::graphics::ParticleEmitter::duration

The amount of time (in seconds) that has passed for this emitter

◆ generator

std::shared_ptr<Random> cugl::graphics::ParticleEmitter::generator

The random number generator for this emitter

◆ interval

double cugl::graphics::ParticleEmitter::interval

The amount of time (in seconds) between emissions

◆ lifespan

float cugl::graphics::ParticleEmitter::lifespan

The lifespan of emitted particles

◆ position

Vec3 cugl::graphics::ParticleEmitter::position

The location of this emitter

◆ remainder

double cugl::graphics::ParticleEmitter::remainder

The amount of time remaining until the next emission

◆ velocity

Vec3 cugl::graphics::ParticleEmitter::velocity

The initial velocity of particles emitted

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

/Users/wmwhite/Developer/CUGL/include/cugl/graphics/CUParticleSystem.h

Public Member Functions

Public Attributes