Panda3D
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00001 // Filename: ringEmitter.h 00002 // Created by: charles (22Jun00) 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 #ifndef RINGEMITTER_H 00016 #define RINGEMITTER_H 00017 00018 #include "baseParticleEmitter.h" 00019 00020 //////////////////////////////////////////////////////////////////// 00021 // Class : RingEmitter 00022 // Description : Describes a planar ring region in which 00023 // particles are generated. 00024 //////////////////////////////////////////////////////////////////// 00025 class EXPCL_PANDAPHYSICS RingEmitter : public BaseParticleEmitter { 00026 PUBLISHED: 00027 RingEmitter(); 00028 RingEmitter(const RingEmitter ©); 00029 virtual ~RingEmitter(); 00030 00031 virtual BaseParticleEmitter *make_copy(); 00032 00033 INLINE void set_radius(PN_stdfloat r); 00034 INLINE void set_angle(PN_stdfloat angle); 00035 INLINE void set_radius_spread(PN_stdfloat spread); 00036 INLINE void set_uniform_emission(int uniform_emission); 00037 00038 INLINE PN_stdfloat get_radius() const; 00039 INLINE PN_stdfloat get_angle() const; 00040 INLINE PN_stdfloat get_radius_spread() const; 00041 INLINE int get_uniform_emission() const; 00042 00043 virtual void output(ostream &out) const; 00044 virtual void write(ostream &out, int indent=0) const; 00045 00046 protected: 00047 PN_stdfloat _radius; 00048 PN_stdfloat _radius_spread; 00049 00050 // CUSTOM EMISSION PARAMETERS 00051 PN_stdfloat _aoe; // angle of elevation 00052 00053 // viariables used for uniform particle emission 00054 int _uniform_emission; 00055 PN_stdfloat _theta; 00056 00057 /////////////////////////////// 00058 // scratch variables that carry over from position calc to velocity calc 00059 PN_stdfloat _sin_theta; 00060 PN_stdfloat _cos_theta; 00061 /////////////////////////////// 00062 00063 private: 00064 virtual void assign_initial_position(LPoint3& pos); 00065 virtual void assign_initial_velocity(LVector3& vel); 00066 }; 00067 00068 #include "ringEmitter.I" 00069 00070 #endif // RINGEMITTER_H