How to use

destroyParticlesInShape

method

in

org.jbox2d.particle.ParticleSystem

/**
 * Destroy particles inside a shape. This function is locked during callbacks. In addition, this
 * function immediately destroys particles in the shape in contrast to DestroyParticle() which
 * defers the destruction until the next simulation step.
 * 
 * @param Shape which encloses particles that should be destroyed.
 * @param Transform applied to the shape.
 * @param Whether to call the world b2DestructionListener for each particle destroyed.
 * @warning This function is locked during callbacks.
 * @return Number of particles destroyed.
 */
public int destroyParticlesInShape(Shape shape, Transform xf, boolean callDestructionListener) {
 assert (isLocked() == false);
 if (isLocked()) {
  return 0;
 }
 return m_particleSystem.destroyParticlesInShape(shape, xf, callDestructionListener);
}

/**
 * Destroy particles inside a shape. This function is locked during callbacks. In addition, this
 * function immediately destroys particles in the shape in contrast to DestroyParticle() which
 * defers the destruction until the next simulation step.
 * 
 * @param Shape which encloses particles that should be destroyed.
 * @param Transform applied to the shape.
 * @param Whether to call the world b2DestructionListener for each particle destroyed.
 * @warning This function is locked during callbacks.
 * @return Number of particles destroyed.
 */
public int destroyParticlesInShape(Shape shape, Transform xf, boolean callDestructionListener) {
 assert (isLocked() == false);
 if (isLocked()) {
  return 0;
 }
 return m_particleSystem.destroyParticlesInShape(shape, xf, callDestructionListener);
}

/**
 * Destroy particles inside a shape. This function is locked during callbacks. In addition, this
 * function immediately destroys particles in the shape in contrast to DestroyParticle() which
 * defers the destruction until the next simulation step. This function is locked during callbacks.
 *
 * @param shape which encloses particles that should be destroyed.
 * @param xf transform applied to the shape.
 * @param callDestructionListener whether to call the world b2DestructionListener for each particle destroyed.
 * @return Number of particles destroyed.
 */
public int destroyParticlesInShape(Shape shape, Transform xf, boolean callDestructionListener) {
  assertNotLocked();
  return particleSystem.destroyParticlesInShape(shape, xf, callDestructionListener);
}

/**
 * Destroy particles inside a shape. This function is locked during callbacks. In addition, this
 * function immediately destroys particles in the shape in contrast to DestroyParticle() which
 * defers the destruction until the next simulation step.
 * 
 * @param Shape which encloses particles that should be destroyed.
 * @param Transform applied to the shape.
 * @param Whether to call the world b2DestructionListener for each particle destroyed.
 * @warning This function is locked during callbacks.
 * @return Number of particles destroyed.
 */
public int destroyParticlesInShape(Shape shape, Transform xf, boolean callDestructionListener) {
 assert (isLocked() == false);
 if (isLocked()) {
  return 0;
 }
 return m_particleSystem.destroyParticlesInShape(shape, xf, callDestructionListener);
}