Public Attributes
uint32	flags
	The particle-behavior flags (See b2ParticleFlag).

uint32	groupFlags
	The group-construction flags (See b2ParticleGroupFlag).

b2Vec2	position

float32	angle

b2Vec2	linearVelocity
	The linear velocity of the group's origin in world co-ordinates.

float32	angularVelocity
	The angular velocity of the group.

b2ParticleColor	color
	The color of all particles in the group.

float32	strength

const b2Shape *	shape
	The shape where particles will be added.

const b2Shape const	shapes
	A array of shapes where particles will be added.

int32	shapeCount
	The number of shapes.

float32	stride

int32	particleCount
	The number of particles in addition to ones added in the shape.

const b2Vec2 *	positionData
	The initial positions of the particleCount particles.

float32	lifetime

void *	userData
	Use this to store application-specific group data.

b2ParticleGroup *	group
	An existing particle group to which the particles will be added.

Detailed Description

A particle group definition holds all the data needed to construct a particle group. You can safely re-use these definitions.

Member Data Documentation

float32 b2ParticleGroupDef::angle

The world angle of the group in radians. Rotates the shape by an angle equal to the value of angle.

float32 b2ParticleGroupDef::lifetime

Lifetime of the particle group in seconds. A value <= 0.0f indicates a particle group with infinite lifetime.

b2Vec2 b2ParticleGroupDef::position

The world position of the group. Moves the group's shape a distance equal to the value of position.

float32 b2ParticleGroupDef::strength

The strength of cohesion among the particles in a group with flag b2_elasticParticle or b2_springParticle.

float32 b2ParticleGroupDef::stride

The interval of particles in the shape. If it is 0, b2_particleStride * particleDiameter is used instead.

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