21 _age(0.0f), _lifespan(lifespan), _alive(alive), _index(0){
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
An individual, physically-modelable particle abstract base class.
virtual void write(std::ostream &out, int indent=0) const
Write a string representation of this instance to <out>.
virtual PN_stdfloat get_theta() const
for spriteParticleRenderer
virtual void output(std::ostream &out) const
Write a string representation of this instance to <out>.