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linearForce.h
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file linearForce.h
10 * @author charles
11 * @date 2000-06-13
12 */
13
14#ifndef LINEARFORCE_H
15#define LINEARFORCE_H
16
17#include "baseForce.h"
18
19/**
20 * A force that acts on a PhysicsObject by way of an Integrator. This is a
21 * pure virtual base class.
22 */
23class EXPCL_PANDA_PHYSICS LinearForce : public BaseForce {
24PUBLISHED:
26
27 INLINE void set_amplitude(const PN_stdfloat a);
28 INLINE void set_mass_dependent(bool m);
29
30 INLINE PN_stdfloat get_amplitude() const;
31 INLINE bool get_mass_dependent() const;
32
33 INLINE void set_vector_masks(bool x, bool y, bool z);
34 INLINE LVector3 get_vector_masks();
35
36 LVector3 get_vector(const PhysicsObject *po);
37
38 virtual LinearForce *make_copy() = 0;
39
40 virtual bool is_linear() const;
41
42 virtual void output(std::ostream &out) const;
43 virtual void write(std::ostream &out, int indent=0) const;
44
45protected:
46 LinearForce(PN_stdfloat a, bool mass);
47 LinearForce(const LinearForce& copy);
48
49private:
50 PN_stdfloat _amplitude;
51 bool _mass_dependent;
52
53 bool _x_mask;
54 bool _y_mask;
55 bool _z_mask;
56
57 virtual LVector3 get_child_vector(const PhysicsObject *po) = 0;
58
59public:
60 static TypeHandle get_class_type() {
61 return _type_handle;
62 }
63 static void init_type() {
64 BaseForce::init_type();
65 register_type(_type_handle, "LinearForce",
66 BaseForce::get_class_type());
67 }
68 virtual TypeHandle get_type() const {
69 return get_class_type();
70 }
71 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
72
73private:
74 static TypeHandle _type_handle;
75};
76
77#include "linearForce.I"
78
79#endif // BASELINEARFORCE_H
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pure virtual base class for all forces that could POSSIBLY exist.
Definition baseForce.h:29
virtual void write(std::ostream &out, int indent_level=0) const
Write a string representation of this instance to <out>.
Definition baseForce.cxx:59
virtual void output(std::ostream &out) const
Write a string representation of this instance to <out>.
Definition baseForce.cxx:51
A force that acts on a PhysicsObject by way of an Integrator.
Definition linearForce.h:23
A body on which physics will be applied.
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
std::ostream & indent(std::ostream &out, int indent_level)
A handy function for doing text formatting.
Definition indent.cxx:20
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...