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00001 /* ****************************************************************** **
00002 **    OpenSees - Open System for Earthquake Engineering Simulation    **
00003 **          Pacific Earthquake Engineering Research Center            **
00004 **                                                                    **
00005 **                                                                    **
00006 ** (C) Copyright 1999, The Regents of the University of California    **
00007 ** All Rights Reserved.                                               **
00008 **                                                                    **
00009 ** Commercial use of this program without express permission of the   **
00010 ** University of California, Berkeley, is strictly prohibited.  See   **
00011 ** file 'COPYRIGHT'  in main directory for information on usage and   **
00012 ** redistribution,  and for a DISCLAIMER OF ALL WARRANTIES.           **
00013 **                                                                    **
00014 ** Developed by:                                                      **
00015 **   Frank McKenna (fmckenna@ce.berkeley.edu)                         **
00016 **   Gregory L. Fenves (fenves@ce.berkeley.edu)                       **
00017 **   Filip C. Filippou (filippou@ce.berkeley.edu)                     **
00018 **                                                                    **
00019 ** ****************************************************************** */
00020                                                                         
00021 // $Revision: 1.1.1.1 $
00022 // $Date: 2000/09/15 08:23:17 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/analysis/integrator/Integrator.h,v $
00024                                                                         
00025                                                                         
00026 #ifndef Integrator_h
00027 #define Integrator_h
00028 
00029 // File: ~/analysis/integrator/Integrator.h
00030 // 
00031 // Written: fmk 
00032 // Created: 11/96
00033 // Revision: A
00034 //
00035 // Description: This file contains the class interface for Integrator.
00036 // Integrator is an abstract base class, i.e. no objects of it's
00037 // type can be created. 
00038 //
00039 // What: "@(#) Integrator.h, revA"
00040 
00041 #include <MovableObject.h>
00042 #include <iostream.h>
00043 
00044 #include <FE_Element.h>
00045 #include <DOF_Group.h>
00046 #include <Vector.h>
00047 #include <ID.h>
00048 #include <FEM_ObjectBroker.h>
00049 
00063 class Integrator: public MovableObject
00064 {
00065   public:
00069     Integrator(int classTag);
00070 
00074     virtual ~Integrator();
00075 
00076 
00082     virtual int domainChanged(void);
00083 
00084 
00090     virtual int formEleTangent(FE_Element *theEle) =0;
00091 
00097     virtual int formNodTangent(DOF_Group *theDof) =0;    
00098 
00104     virtual int formEleResidual(FE_Element *theEle) =0;
00105 
00111     virtual int formNodUnbalance(DOF_Group *theDof) =0;    
00112 
00113 
00115     virtual int getLastResponse(Vector &result, const ID &id) =0;
00116 
00118     virtual void Print(ostream &s, int flag =0) =0;
00119     
00120   protected:
00121 
00122   private:
00123 
00124 };
00125 
00126 #endif
00127 
00128 
00129 
00130 
00131 
00132