61 lines
1.5 KiB
C
61 lines
1.5 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 linearFrictionForce.h
|
||
|
|
* @author charles
|
||
|
|
* @date 2000-06-23
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef LINEARFRICTIONFORCE_H
|
||
|
|
#define LINEARFRICTIONFORCE_H
|
||
|
|
|
||
|
|
#include "linearForce.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Friction-based drag force
|
||
|
|
*/
|
||
|
|
class EXPCL_PANDA_PHYSICS LinearFrictionForce : public LinearForce {
|
||
|
|
PUBLISHED:
|
||
|
|
explicit LinearFrictionForce(PN_stdfloat coef = 1.0f, PN_stdfloat a = 1.0f, bool m = false);
|
||
|
|
LinearFrictionForce(const LinearFrictionForce ©);
|
||
|
|
virtual ~LinearFrictionForce();
|
||
|
|
|
||
|
|
INLINE void set_coef(PN_stdfloat coef);
|
||
|
|
INLINE PN_stdfloat get_coef() const;
|
||
|
|
|
||
|
|
virtual void output(std::ostream &out) const;
|
||
|
|
virtual void write(std::ostream &out, int indent=0) const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
PN_stdfloat _coef;
|
||
|
|
|
||
|
|
virtual LinearForce *make_copy();
|
||
|
|
virtual LVector3 get_child_vector(const PhysicsObject *);
|
||
|
|
|
||
|
|
public:
|
||
|
|
static TypeHandle get_class_type() {
|
||
|
|
return _type_handle;
|
||
|
|
}
|
||
|
|
static void init_type() {
|
||
|
|
LinearForce::init_type();
|
||
|
|
register_type(_type_handle, "LinearFrictionForce",
|
||
|
|
LinearForce::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 "linearFrictionForce.I"
|
||
|
|
|
||
|
|
#endif // LINEARFRICTIONFORCE_H
|