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ElementalLoad.h

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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: 1.4 $
00022 // $Date: 2006/09/05 23:25:24 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/element/ElementalLoad.h,v $
00024                                                                         
00025                                                                         
00026 #ifndef ElementalLoad_h
00027 #define ElementalLoad_h
00028 
00029 // Written: fmk 
00030 //
00031 // Purpose: This file contains the class definition for ElementalLoad.
00032 // ElementalLoad is an abstract class.
00033 
00034 #include <Load.h>
00035 #include <Vector.h>
00036 
00037 class Element;
00038 
00039 class ElementalLoad : public Load
00040 {
00041   public:
00042     ElementalLoad(int tag, int classTag, const ID &theElementTags);
00043     ElementalLoad(int tag, int classTag);
00044     ElementalLoad(int classTag);    
00045     ~ElementalLoad();
00046 
00047     virtual void setDomain(Domain *theDomain);
00048     virtual void applyLoad(double loadfactor);
00049     virtual const Vector &getData(int &type, double loadFactor) = 0;
00050     virtual const Vector &getSensitivityData(int gradNumber);
00051 
00052     virtual const ID &getElementTags(void);
00053     virtual int removeElement(int tag); // returns -1 if fails, 
00054                                         // numElements left if removed
00055   protected:
00056     int setElementTags(const ID &theEleTags);
00057     ID *theElementTags;     // copy of element tags, removed in setDomain
00058 
00059   private:
00060     Element **theElements;  // pointer to associated elements
00061     int numElements;        // number of associated elements
00062 };
00063 
00064 #endif
00065

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