87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
// Filename: linearDistanceForce.h
|
|
// Created by: charles (21Jun00)
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
//
|
|
// PANDA 3D SOFTWARE
|
|
// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
|
|
//
|
|
// All use of this software is subject to the terms of the Panda 3d
|
|
// Software license. You should have received a copy of this license
|
|
// along with this source code; you will also find a current copy of
|
|
// the license at http://etc.cmu.edu/panda3d/docs/license/ .
|
|
//
|
|
// To contact the maintainers of this program write to
|
|
// panda3d-general@lists.sourceforge.net .
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef LINEARDISTANCEFORCE_H
|
|
#define LINEARDISTANCEFORCE_H
|
|
|
|
#include "linearForce.h"
|
|
|
|
class BamReader;
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Class : LinearDistanceForce
|
|
// Description : Pure virtual class for sinks and sources
|
|
////////////////////////////////////////////////////////////////////
|
|
class EXPCL_PANDAPHYSICS LinearDistanceForce : public LinearForce {
|
|
PUBLISHED:
|
|
enum FalloffType {
|
|
FT_ONE_OVER_R,
|
|
FT_ONE_OVER_R_SQUARED,
|
|
FT_ONE_OVER_R_CUBED
|
|
};
|
|
|
|
INLINE void set_radius(float r);
|
|
INLINE void set_falloff_type(FalloffType ft);
|
|
INLINE void set_force_center(const LPoint3f& p);
|
|
|
|
INLINE float get_radius() const;
|
|
INLINE FalloffType get_falloff_type() const;
|
|
INLINE LPoint3f get_force_center() const;
|
|
|
|
INLINE float get_scalar_term() const;
|
|
|
|
virtual void output(ostream &out) const;
|
|
virtual void write(ostream &out, unsigned int indent=0) const;
|
|
|
|
private:
|
|
LPoint3f _force_center;
|
|
|
|
FalloffType _falloff;
|
|
float _radius;
|
|
|
|
virtual LinearForce *make_copy() = 0;
|
|
virtual LVector3f get_child_vector(const PhysicsObject *po) = 0;
|
|
|
|
protected:
|
|
LinearDistanceForce(const LPoint3f& p, FalloffType ft, float r, float a,
|
|
bool m);
|
|
LinearDistanceForce(const LinearDistanceForce ©);
|
|
virtual ~LinearDistanceForce();
|
|
|
|
public:
|
|
static TypeHandle get_class_type() {
|
|
return _type_handle;
|
|
}
|
|
static void init_type() {
|
|
LinearForce::init_type();
|
|
register_type(_type_handle, "LinearDistanceForce",
|
|
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 "linearDistanceForce.I"
|
|
|
|
#endif // LINEARDISTANCEFORCE_H
|