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LinearSeries.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: 1.2 $
00022 // $Date: 2003/02/14 23:01:00 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/domain/pattern/LinearSeries.h,v $
00024                                                                         
00025                                                                         
00026 #ifndef LinearSeries_h
00027 #define LinearSeries_h
00028 
00029 // File: ~/domain/pattern/LinearSeries.h
00030 //
00031 // Written: fmk 
00032 // Created: 07/99
00033 // Revision: A
00034 //
00035 // Purpose: This file contains the class definition for LinearSeries.
00036 // LinearSeries is a concrete class. A LinearSeries object provides
00037 // a linear time series. the factor is given by the pseudoTime and 
00038 // a constant factor provided in the constructor.
00039 //
00040 // What: "@(#) LinearSeries.h, revA"
00041 
00042 #include <TimeSeries.h>
00043 
00044 class LinearSeries : public TimeSeries
00045 {
00046   public:
00047     LinearSeries(double cFactor = 1.0);
00048 
00049     ~LinearSeries();
00050 
00051     // method to get load factor
00052     double getFactor(double pseudoTime);
00053 
00054     // None of the following functions should be invoked on this type
00055     // of object
00056     double getDuration () {return 0.0;} // dummy function
00057     double getPeakFactor () {return cFactor;} // dummy function
00058     double getTimeIncr (double pseudoTime) {return 1.0;} // dummy function
00059     
00060     // methods for output    
00061     int sendSelf(int commitTag, Channel &theChannel);
00062     int recvSelf(int commitTag, Channel &theChannel, 
00063                  FEM_ObjectBroker &theBroker);
00064 
00065     void Print(OPS_Stream &s, int flag =0);    
00066     
00067   protected:
00068         
00069   private:
00070     double cFactor;  // factor = pseudoTime * cFactor
00071 };
00072 
00073 #endif

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