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