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