Panda3D
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00001 // Filename: baseParticle.I 00002 // Created by: charles (16Jun00) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 INLINE void BaseParticle::set_age(PN_stdfloat age) { 00016 _age = age; 00017 } 00018 00019 INLINE void BaseParticle::set_lifespan(PN_stdfloat lifespan) { 00020 _lifespan = lifespan; 00021 } 00022 00023 INLINE void BaseParticle::set_alive(bool alive) { 00024 _alive = alive; 00025 } 00026 00027 INLINE void BaseParticle::set_index(int index) { 00028 _index = index; 00029 } 00030 00031 INLINE PN_stdfloat BaseParticle::get_age() const { 00032 return _age; 00033 } 00034 00035 INLINE PN_stdfloat BaseParticle::get_lifespan() const { 00036 return _lifespan; 00037 } 00038 00039 INLINE bool BaseParticle::get_alive() const { 00040 return _alive; 00041 } 00042 00043 INLINE int BaseParticle::get_index() const { 00044 return _index; 00045 } 00046 00047 INLINE PN_stdfloat BaseParticle::get_parameterized_age() const { 00048 if (_lifespan <= 0) return 1.0; 00049 return _age / _lifespan; 00050 } 00051 00052 INLINE PN_stdfloat BaseParticle::get_parameterized_vel() const { 00053 if (IS_NEARLY_ZERO(get_terminal_velocity())) return 0.0; 00054 return (get_velocity().length()) / get_terminal_velocity(); 00055 }