Panda3D
linearSinkForce.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 linearSinkForce.h
10  * @author charles
11  * @date 2000-06-21
12  */
13 
14 #ifndef LINEARSINKFORCE_H
15 #define LINEARSINKFORCE_H
16 
17 #include "linearDistanceForce.h"
18 
19 /**
20  * Attractor force. Think black hole.
21  */
22 class EXPCL_PANDA_PHYSICS LinearSinkForce : public LinearDistanceForce {
23 PUBLISHED:
24  explicit LinearSinkForce(const LPoint3& p, FalloffType f, PN_stdfloat r,
25  PN_stdfloat a = 1.0f, bool m = true);
27  LinearSinkForce(const LinearSinkForce &copy);
28  virtual ~LinearSinkForce();
29 
30  virtual void output(std::ostream &out) const;
31  virtual void write(std::ostream &out, int indent=0) const;
32 
33 private:
34  virtual LVector3 get_child_vector(const PhysicsObject *po);
35  virtual LinearForce *make_copy();
36 
37 public:
38  static TypeHandle get_class_type() {
39  return _type_handle;
40  }
41  static void init_type() {
42  LinearDistanceForce::init_type();
43  register_type(_type_handle, "LinearSinkForce",
44  LinearDistanceForce::get_class_type());
45  }
46  virtual TypeHandle get_type() const {
47  return get_class_type();
48  }
49  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
50 
51 private:
52  static TypeHandle _type_handle;
53 };
54 
55 #endif // LINEARSINKFORCE_H
virtual void output(std::ostream &out) const
Write a string representation of this instance to <out>.
A body on which physics will be applied.
Definition: physicsObject.h:27
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...
Definition: register_type.I:22
Pure virtual class for sinks and sources.
A force that acts on a PhysicsObject by way of an Integrator.
Definition: linearForce.h:23
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
std::ostream & indent(std::ostream &out, int indent_level)
A handy function for doing text formatting.
Definition: indent.cxx:20
Attractor force.
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:81
virtual void write(std::ostream &out, int indent=0) const
Write a string representation of this instance to <out>.