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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/coordTransformation/CrdTransf.h,v $
00024                                                                         
00025                                                                         
00026 // File: ~/crdTransf/CrdTransf.h
00027 //
00028 // Written: Remo Magalhaes de Souza (rmsouza@ce.berkeley.edu)
00029 // Created: 04/2000
00030 // Revision: A
00031 //
00032 // Description: This file contains the class definition for 
00033 // CrdTransf.h. CrdTransf provides the abstraction of a frame 
00034 // coordinate transformation. It is an abstract base class and 
00035 // thus no objects of  it's type can be instatiated. It has pure 
00036 // virtual functions which  must be implemented in it's derived classes.
00037 //
00038 // What: "@(#) CrdTransf.h, revA"
00039 
00040 #ifndef CrdTransf_h
00041 #define CrdTransf_h
00042 
00043 #include <MovableObject.h>
00044 #include <TaggedObject.h>
00045 
00046 #include <Vector.h>
00047 #include <Matrix.h>
00048 #include <Node.h>
00049 
00050 
00052 class CrdTransf: public TaggedObject, public MovableObject
00053 {
00054   public:
00056     CrdTransf(int tag, int classTag);
00058     CrdTransf();
00060     virtual ~CrdTransf();
00061 
00063     virtual int    initialize(Node *node1Pointer, Node *node2Pointer) = 0;
00065     virtual int    update(void) = 0;
00067     virtual double getInitialLength(void) = 0;
00069     virtual double getDeformedLength(void) = 0;
00070     
00072     virtual int commitState(void) = 0;
00074     virtual int revertToLastCommit(void) = 0;        
00076     virtual int revertToStart(void) = 0;
00077     
00079     virtual const Vector &getBasicTrialDisp       (void) = 0;
00081     virtual const Vector &getBasicIncrDisp        (void) = 0;
00083     virtual const Vector &getBasicIncrDeltaDisp   (void) = 0;
00084 
00086     virtual const Vector &getGlobalResistingForce (const Vector &basicForce, const Vector &uniformLoad) = 0;
00088     virtual const Matrix &getGlobalStiffMatrix    (const Matrix &basicStiff, const Vector &basicForce) = 0;
00089 
00091     virtual const Vector &getPointGlobalCoordFromLocal (const Vector &localCoords) = 0;
00093     virtual const Vector &getPointGlobalDisplFromBasic (double xi, const Vector &basicDisps) = 0;
00094    
00095   protected:
00096     
00097   private:
00098 };
00099 
00100 #endif
00101 ÿ