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TrigSeries.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 23:01:01 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/domain/pattern/TrigSeries.h,v $
00024                                                                         
00025                                                                         
00026 #ifndef TrigSeries_h
00027 #define TrigSeries_h
00028 
00029 // File: ~/domain/pattern/TrigSeries.h
00030 //
00031 // Written: MHS 
00032 // Created: July 2000
00033 // Revision: A
00034 //
00035 // Purpose: This file contains the class definition for TrigSeries.
00036 // TrigSeries is a concrete class. A TrigSeries object provides
00037 // a sine time series. the factor is given by the pseudoTime (x),
00038 // pulse period (T), phase shift (phi), i.e. by sin(2*PI*(x-xo)/T + phi),
00039 // and a constant factor provided in the constructor,
00040 // the duration by tStart and tFinal;
00041 //
00042 // What: "@(#) TrigSeries.h, revA"
00043 
00044 #include <TimeSeries.h>
00045 
00046 class TrigSeries : public TimeSeries
00047 {
00048   public:
00049     // constructors
00050     TrigSeries(double tStart, double tFinish,
00051                 double period, double shift, double cFactor = 1.0);
00052     TrigSeries();
00053     
00054     // destructor
00055     ~TrigSeries();
00056     
00057     // method to get load factor
00058     double getFactor(double pseudoTime);
00059     double getDuration () {return tFinish-tStart;}
00060     double getPeakFactor () {return cFactor;}
00061     double getTimeIncr (double pseudoTime) {return tFinish-tStart;}
00062     
00063     // methods for output    
00064     int sendSelf(int commitTag, Channel &theChannel);
00065     int recvSelf(int commitTag, Channel &theChannel, 
00066                  FEM_ObjectBroker &theBroker);
00067 
00068     void Print(OPS_Stream &s, int flag =0);    
00069     
00070   protected:
00071         
00072   private:
00073     double tStart;    // start time of the pulse
00074         double tFinish;   // finish time of the pulse
00075         double period;
00076         double shift;
00077     double cFactor;   // factor = cFactor*sin for tStart <= t <= tFinish
00078 };
00079 
00080 #endif

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