Panda3D

linearFrictionForce.h

00001 // Filename: linearFrictionForce.h
00002 // Created by:  charles (23Jun00)
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 LINEARFRICTIONFORCE_H
00016 #define LINEARFRICTIONFORCE_H
00017 
00018 #include "linearForce.h"
00019 
00020 ////////////////////////////////////////////////////////////////////
00021 //       Class : LinearFrictionForce
00022 // Description : Friction-based drag force
00023 ////////////////////////////////////////////////////////////////////
00024 class EXPCL_PANDAPHYSICS LinearFrictionForce : public LinearForce {
00025 PUBLISHED:
00026   LinearFrictionForce(PN_stdfloat coef = 1.0f, PN_stdfloat a = 1.0f, bool m = false);
00027   LinearFrictionForce(const LinearFrictionForce &copy);
00028   virtual ~LinearFrictionForce();
00029 
00030   INLINE void set_coef(PN_stdfloat coef);
00031   INLINE PN_stdfloat get_coef() const;
00032   
00033   virtual void output(ostream &out) const;
00034   virtual void write(ostream &out, unsigned int indent=0) const;
00035 
00036 private:
00037   PN_stdfloat _coef;
00038 
00039   virtual LinearForce *make_copy();
00040   virtual LVector3 get_child_vector(const PhysicsObject *);
00041 
00042 public:
00043   static TypeHandle get_class_type() {
00044     return _type_handle;
00045   }
00046   static void init_type() {
00047     LinearForce::init_type();
00048     register_type(_type_handle, "LinearFrictionForce",
00049                   LinearForce::get_class_type());
00050   }
00051   virtual TypeHandle get_type() const {
00052     return get_class_type();
00053   }
00054   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00055 
00056 private:
00057   static TypeHandle _type_handle;
00058 };
00059 
00060 #include "linearFrictionForce.I"
00061 
00062 #endif // LINEARFRICTIONFORCE_H
 All Classes Functions Variables Enumerations