Panda3D

linearSinkForce.h

00001 // Filename: linearSinkForce.h
00002 // Created by:  charles (21Jun00)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef LINEARSINKFORCE_H
00016 #define LINEARSINKFORCE_H
00017 
00018 #include "linearDistanceForce.h"
00019 
00020 ////////////////////////////////////////////////////////////////////
00021 //       Class : LinearSinkForce
00022 // Description : Attractor force.  Think black hole.
00023 ////////////////////////////////////////////////////////////////////
00024 class EXPCL_PANDAPHYSICS LinearSinkForce : public LinearDistanceForce {
00025 PUBLISHED:
00026   LinearSinkForce(const LPoint3& p, FalloffType f, PN_stdfloat r, PN_stdfloat a = 1.0f,
00027                   bool m = true);
00028   LinearSinkForce();
00029   LinearSinkForce(const LinearSinkForce &copy);
00030   virtual ~LinearSinkForce();
00031   
00032   virtual void output(ostream &out) const;
00033   virtual void write(ostream &out, unsigned int indent=0) const;
00034 
00035 private:
00036   virtual LVector3 get_child_vector(const PhysicsObject *po);
00037   virtual LinearForce *make_copy();
00038 
00039 public:
00040   static TypeHandle get_class_type() {
00041     return _type_handle;
00042   }
00043   static void init_type() {
00044     LinearDistanceForce::init_type();
00045     register_type(_type_handle, "LinearSinkForce",
00046                   LinearDistanceForce::get_class_type());
00047   }
00048   virtual TypeHandle get_type() const {
00049     return get_class_type();
00050   }
00051   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00052 
00053 private:
00054   static TypeHandle _type_handle;
00055 };
00056 
00057 #endif // LINEARSINKFORCE_H
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