package org.jbox2d.particle;
import org.jbox2d.collision.shapes.Shape;
import org.jbox2d.common.Vec2;
/**
* A particle group definition holds all the data needed to construct a particle group. You can
* safely re-use these definitions.
*/
public class ParticleGroupDef {
/** The particle-behavior flags. */
public int flags;
/** The group-construction flags. */
public int groupFlags;
/**
* The world position of the group. Moves the group's shape a distance equal to the value of
* position.
*/
public final Vec2 position = new Vec2();
/**
* The world angle of the group in radians. Rotates the shape by an angle equal to the value of
* angle.
*/
public float angle;
/** The linear velocity of the group's origin in world co-ordinates. */
public final Vec2 linearVelocity = new Vec2();
/** The angular velocity of the group. */
public float angularVelocity;
/** The color of all particles in the group. */
public ParticleColor color;
/**
* The strength of cohesion among the particles in a group with flag b2_elasticParticle or
* b2_springParticle.
*/
public float strength;
/** Shape containing the particle group. */
public Shape shape;
/** If true, destroy the group automatically after its last particle has been destroyed. */
public boolean destroyAutomatically;
/** Use this to store application-specific group data. */
public Object userData;
public ParticleGroupDef() {
flags = 0;
groupFlags = 0;
angle = 0;
angularVelocity = 0;
strength = 1;
destroyAutomatically = true;
}
}