Well its almost that time of year again when fireworks will brighten up our skies, so i thought it might be a nice topic for a tutorial. A couple of days and empty soda bottles later you can try it out for yourselves. Have fun reading it!
Children are Hair and Keyed particles assigned subparticles. They make it possible to work primarily with a relatively low amount of Parent particles, for whom the physics are calculated. The children are then aligned to their parents. Without recalculating the physics the number and visualization of the children can be changed.