77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file linearNoiseForce.h
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* @author charles
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* @date 2000-06-13
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*/
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#ifndef LINEARNOISEFORCE_H
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#define LINEARNOISEFORCE_H
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#include "pandabase.h"
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#include "linearRandomForce.h"
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#include "configVariableInt.h"
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/**
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* Repeating noise force vector.
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*/
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class EXPCL_PANDA_PHYSICS LinearNoiseForce : public LinearRandomForce {
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PUBLISHED:
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explicit LinearNoiseForce(PN_stdfloat a = 1.0f, bool m = false);
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LinearNoiseForce(const LinearNoiseForce ©);
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virtual ~LinearNoiseForce();
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virtual void output(std::ostream &out) const;
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virtual void write(std::ostream &out, int indent=0) const;
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public:
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static ConfigVariableInt _random_seed;
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static void init_noise_tables();
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private:
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static unsigned char _prn_table[256];
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static LVector3 _gradient_table[256];
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static bool _initialized;
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INLINE PN_stdfloat cubic_step(const PN_stdfloat x) const;
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INLINE LVector3 vlerp(const PN_stdfloat t, const LVector3& v0, const LVector3& v1) const;
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INLINE unsigned char get_prn_entry(const LPoint3& point) const;
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INLINE unsigned char get_prn_entry(const PN_stdfloat x, const PN_stdfloat y, const PN_stdfloat z) const;
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INLINE LVector3& get_lattice_entry(const LPoint3& point);
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INLINE LVector3& get_lattice_entry(const PN_stdfloat x, const PN_stdfloat y, const PN_stdfloat z);
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INLINE unsigned char prn_lookup(int index) const;
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virtual LVector3 get_child_vector(const PhysicsObject *po);
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virtual LinearForce *make_copy();
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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LinearRandomForce::init_type();
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register_type(_type_handle, "LinearNoiseForce",
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LinearRandomForce::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#include "linearNoiseForce.I"
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#endif // LINEARNOISEFORCE_H
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