private void regenerateParticle(MovingParticle p) {
// Generate random particle
float cutOff = (float) Math.random() * cone.getCutOff();
float angle = (float) Math.random() * 2 * (float) Math.PI;
float speed = (float) Math.random() * 5f + 1.5f;
// Particle direction
Quaternion4f rot =
cone.getOrientation()
.clone()
.multiply(Quaternion4f.fromAxisAngle(0, 0, 1, angle))
.multiply(Quaternion4f.fromAxisAngle(1, 0, 0, (float) Math.toRadians(cutOff)));
// Calculate position/speed
p.position = cone.getPosition().clone();
p.speed = rot.rotate(new Vector3f(0, 0, speed));
}
