pimappsupport/chinesecalendaralg/originalinc/calconvAstronomicalCal.h
branchRCL_3
changeset 12 38571fd2a704
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5:42814f902fe6 12:38571fd2a704
       
     1 // Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #ifndef __ASTRONOMICALCAL_H__
       
    17 #define __ASTRONOMICALCAL_H__
       
    18 
       
    19 
       
    20 #include <e32std.h>
       
    21 #include <e32base.h>
       
    22 #include "calconvcalendar.h"
       
    23 
       
    24 const TInt KCalConvFirstDay = 1;
       
    25 const TReal KMeanSynodicMonth = 29.530588853;
       
    26 
       
    27 
       
    28 class TAstronomicalCalendar : public TCalendar  
       
    29 	{
       
    30 public:
       
    31 	TAstronomicalCalendar();
       
    32 
       
    33 protected:
       
    34 	void  AdjustJDFromNoon(TReal& aJulianDay) const;
       
    35 	void  AdjustJDToNoon(TReal& aJulianDay) const;
       
    36 	TReal NewMoonAtOrAfter(const TReal& aJulianDay) const;
       
    37 	void  EphemerisCorrection(const TReal aJulianDay, TReal& emphCorr) const;
       
    38 	TReal LocalFromUniversal(const TReal& aTime, const TReal& aZone) const;
       
    39 	TReal UniversalFromLocal(const TReal& aTime, const TReal& aZone) const;
       
    40 	TReal DateNextSolarLongitude(const TReal& aJulianDay, const TReal& aDegrees) const;
       
    41 	void  SolarLongitude(const TReal& aJulianDay, TReal& aTheta) const;
       
    42 	void  JulianCenturies(const TReal& aJulianDay, TReal& aJC) const;
       
    43 	void  EphemerisFromUniversal(const TReal& aJulianDay, TReal& aCorrectedJD) const;
       
    44 	TReal UniversalFromEphemeris(const TReal& aJulianDay) const;
       
    45 	void  EphemerisCorrPopX(const TInt aYear, TReal& aEmphCorr) const;
       
    46 	TReal NewMoonBefore(const TReal& aJulianDay) const;
       
    47 private:
       
    48 	TReal NewMoonTime(TInt aTime) const;
       
    49 	void  GetLongitude(const TReal& aC, TReal& aLongitude) const;
       
    50 	void  Aberration(const TReal& aJulianCenturies, TReal& aAberration) const;
       
    51 	void  Nutation(const TReal& aJulianCenturies, TReal& aNutation) const;
       
    52 	void  j2000(TReal& aJ2000) const;
       
    53 	void  GetPoly(const TReal* aArray, const TReal& aOperand, TInt aCount, TReal& aResult) const;
       
    54 	void  PopulateTheta(TReal& aTheta, TInt aYear) const;
       
    55 	};
       
    56 
       
    57 #endif