/***************************************************************************
 *   (C) Copyright 2006 by GATS, Inc.
 *         11864 Canon Blvd., STE 101
 *         Newport News, VA 23606
 *
 *   All Rights Reserved. No part of this software or publication may be
 *   reproduced, stored in a retrieval system, or transmitted, in any form
 *   or by any means, electronic, mechanical, photocopying, recording, or
 *   otherwise without the prior written permission of GATS, Inc.
 *
 ***************************************************************************
 *
 * Class: Ephemeris
 *
 * Filename: Ephemeris.h
 *
 * Description: EphemerisClass has member functions to manipulate date events
 *              and process SOFIE Level1 Time Registration for a single event
 *
 * Author:      C.W.Brown
 *              (757)952-1048
 *              (757)873-5920
 *              <c.w.brown@gats-inc.com>
 *
 ***************************************************************************/

#ifndef EPHEMERIS_H
#define EPHEMERIS_H
#include <iostream>
#include <fstream>
#include "EventVar.h"
#include "GeneralFunctions.h"

using namespace std;


/**
@author C.W.Brown
*/
class Ephemeris{
private:
public:
//    double *time;		//!< Level 0 Detector Time Array
//    double *
    //double *stateVector[6];	//!< Double array to hold ephemeris
    double ephStart;
    double ephEnd;
    double timeStep;
    int coordSys;
    int numPts;
    typedef struct {
	double time;
	int year;
	int doy;
	double sec;
	double position[3];
	double velocity[3];
    } StateVector;
    StateVector *stateVector;
 
//public:
    Ephemeris();
    //!< default constructor - Constructs an empty EphemerisClass object
    
    Ephemeris(ifstream&);
    //!< Constructs an empty EphemerisClass object
    //!< Loads Initial Ephemeris from file
    //!< This constructor will be used with the Solar Ephem Object

    Ephemeris(int size);
    //!< Constructs an empty EphemerisClass object
    //!< Allocates memory for 'size' data points in the stateVector
    //!< This constructor will be used with the Satellite Ephemeris 


    ~Ephemeris();
    //!< default destructor
    
    void getEphemeris(ifstream&);
    //!< Populates Ephemeris object with data from file 

    void getEphemeris(Ephemeris&);
    //!< Function initializes stateVector by interpolating an Ephemeris onto EventVar time grid
    //!< EventVar must be a time variable

    void getFileHeader(ifstream&);
    //!< Reads Ephemeris File Header Information 
    //!< Stores Values in Ephemeris Class Object
    //!< Returns Size of Ephemeris
 
    //void interpolate(Ephemeris&);
    //!< Interpolates stateVector 

    void calculateTime(int);   
    //!< Fills Time Values from double time parameter
 
    void writeOutput();
    //!< Writes the Output of All Member Variables to Event Object Tmp or Level1
    //!< Requires No Parameters ... Uses Config for Output Parameters and Locations
    //!< IS NOT IMPLEMENTED
};

#endif