force.h Source File

00001 /*
00002     Dynamics/Kinematics modeling and simulation library.
00003     Copyright (C) 1999 by Michael Alexander Ewert
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public
00016     License along with this library; if not, write to the Free
00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 
00019 */
00020 
00021 #ifndef __CT_FORCE_H__
00022 #define __CT_FORCE_H__
00023 
00024 #include "csphyzik/phyztype.h"
00025 #include "csphyzik/math3d.h"
00026 
00027 class ctReferenceFrame;
00028 class ctDynamicEntity;
00029 
00030 // parent class for all forces
00031 class ctForce
00032 {
00033 public:
00034 
00036   ctForce();
00038   ctForce( ctReferenceFrame &rf );
00039   virtual ~ctForce();
00040 
00045   virtual ctVector3 apply_F ( ctDynamicEntity& /*pe*/ )
00046   { return *( new ctVector3() );}
00047 
00049   void set_magnitude ( real m ){ magnitude = m; }
00050   void set_direction ( ctVector3 d ){ direction = d; }
00051 
00052   real magnitude;
00053   ctVector3 direction;
00054   ctVector3 origin;
00055   ctReferenceFrame &RF;
00056 
00057 };
00058 
00059 #endif // __CT_FORCE_H__