Panda3D
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00001 // Filename: linearNoiseForce.h 00002 // Created by: charles (13Jun00) 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 LINEARNOISEFORCE_H 00016 #define LINEARNOISEFORCE_H 00017 00018 #include "pandabase.h" 00019 #include "linearRandomForce.h" 00020 #include "configVariableInt.h" 00021 00022 //////////////////////////////////////////////////////////////////// 00023 // Class : LinearNoiseForce 00024 // Description : Repeating noise force vector. 00025 //////////////////////////////////////////////////////////////////// 00026 class EXPCL_PANDAPHYSICS LinearNoiseForce : public LinearRandomForce { 00027 PUBLISHED: 00028 LinearNoiseForce(PN_stdfloat a = 1.0f, bool m = false); 00029 LinearNoiseForce(const LinearNoiseForce ©); 00030 virtual ~LinearNoiseForce(); 00031 00032 virtual void output(ostream &out) const; 00033 virtual void write(ostream &out, unsigned int indent=0) const; 00034 00035 public: 00036 static ConfigVariableInt _random_seed; 00037 static void init_noise_tables(); 00038 00039 private: 00040 static unsigned char _prn_table[256]; 00041 static LVector3 _gradient_table[256]; 00042 static bool _initialized; 00043 00044 INLINE PN_stdfloat cubic_step(const PN_stdfloat x) const; 00045 INLINE LVector3 vlerp(const PN_stdfloat t, const LVector3& v0, const LVector3& v1) const; 00046 00047 INLINE unsigned char get_prn_entry(const LPoint3& point) const; 00048 INLINE unsigned char get_prn_entry(const PN_stdfloat x, const PN_stdfloat y, const PN_stdfloat z) const; 00049 00050 INLINE LVector3& get_lattice_entry(const LPoint3& point); 00051 INLINE LVector3& get_lattice_entry(const PN_stdfloat x, const PN_stdfloat y, const PN_stdfloat z); 00052 00053 INLINE unsigned char prn_lookup(int index) const; 00054 00055 virtual LVector3 get_child_vector(const PhysicsObject *po); 00056 virtual LinearForce *make_copy(); 00057 00058 public: 00059 static TypeHandle get_class_type() { 00060 return _type_handle; 00061 } 00062 static void init_type() { 00063 LinearRandomForce::init_type(); 00064 register_type(_type_handle, "LinearNoiseForce", 00065 LinearRandomForce::get_class_type()); 00066 } 00067 virtual TypeHandle get_type() const { 00068 return get_class_type(); 00069 } 00070 virtual TypeHandle force_init_type() {init_type(); return get_class_type();} 00071 00072 private: 00073 static TypeHandle _type_handle; 00074 }; 00075 00076 #include "linearNoiseForce.I" 00077 00078 #endif // LINEARNOISEFORCE_H