Symaptic: os/mm/devsoundextensions/effects/LocationBase/src/LocationBase.cpp@bde4ae8d615e

     1 /*

     2 * Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   Implementation of the Location effect base class

    15 *

    16 */

    21 // INCLUDE FILES

    23 #ifdef _DEBUG

    24 #include <e32svr.h>

    25 #endif

    27 #include <LocationBase.h>

    28 #include <e32math.h>

    29 #include <math.h>

    32 //360 degrees:

    33 #define TWO_PI 6283

    34 //180 degrees:

    35 #define PI 3142

    36 //90 degrees:

    37 #define QUARTER_PI 1570

    38 // ============================ MEMBER FUNCTIONS ===============================

    40 // -----------------------------------------------------------------------------

    41 // CLocation::CLocation

    42 // C++ default constructor can NOT contain any code, that

    43 // might leave.

    44 // -----------------------------------------------------------------------------

    45 //

    46 EXPORT_C CLocation::CLocation()

    47     : 	iLocationData(0,0,0,0,0,0),

    48     	iDataPckgTo(iLocationData),

    49     	iDataPckgFrom(iLocationData)

    50     {

    51     }

    53 // Destructor

    54 EXPORT_C CLocation::~CLocation()

    55     {

    56     }

    58 // -----------------------------------------------------------------------------

    59 // CLocation::LocationCartesian

    60 // -----------------------------------------------------------------------------

    61 //

    62 EXPORT_C void CLocation::LocationCartesian(

    63 	TInt32& aX, TInt32& aY, TInt32& aZ )

    64 	{

    65 	aX = iLocationData.iXCoordinate;

    66 	aY = iLocationData.iYCoordinate;

    67 	aZ = iLocationData.iZCoordinate;

    68 	}

    70 // -----------------------------------------------------------------------------

    71 // CLocation::LocationSpherical

    72 // -----------------------------------------------------------------------------

    73 //

    74 EXPORT_C void CLocation::LocationSpherical(

    75 	TInt32& aAzimuth, TInt32& aElevation, TInt32& aRadius  )

    76 	{

    77 	aAzimuth = iLocationData.iAzimuth;

    78 	aElevation = iLocationData.iElevation;

    79 	aRadius = iLocationData.iRadius;

    80 	}

    82 // -----------------------------------------------------------------------------

    83 // CLocation::SetLocationCartesianL

    84 // -----------------------------------------------------------------------------

    85 //

    86 EXPORT_C void CLocation::SetLocationCartesianL(

    87 	TInt32& aX, TInt32& aY, TInt32& aZ )

    88 	{

    89 	iLocationData.iXCoordinate = aX;

    90 	iLocationData.iYCoordinate = aY;

    91 	iLocationData.iZCoordinate = aZ;

    94     TReal SqrtXYZ = 0, squareX = 0, squareY = 0, squareZ = 0;

    95     Math::Pow(squareX, aX, 2);

    96     Math::Pow(squareY, aY, 2);

    97     Math::Pow(squareZ, aZ, 2);

    98     TReal sum = squareX + squareY + squareZ;

    99     Math::Sqrt(SqrtXYZ, sum);

   102     //Singularity region

   104        if(!((aX==0) && (aZ==0))) //was aY

   105        {

   107             TReal zDividedByXAtan = atan2 ((TReal)-aX, (TReal)-aZ);

   109             if (zDividedByXAtan > 0)

   110 	          iLocationData.iAzimuth = - (TInt32)(zDividedByXAtan * 1000 + 0.5); // minus sign added (shouldn't affect the result since it is compensated three rows above, but to be sure...)

   111             else

   112  	          iLocationData.iAzimuth = - (TInt32)(zDividedByXAtan * 1000 - 0.5); // minus sign added (shouldn't affect the result since it is compensated three rows above, but to be sure...)

   114        }

   115 	// else { we are exactly on Y-axis and therefore azimuth is undefined; let's use the previous azimuth value instead }

   118        if (!((aX ==0) && (aY == 0) && (aZ == 0)))

   119        {

   121          TReal result;

   122          TReal yDividedBySqrtXYZ = aY/SqrtXYZ;

   123          User::LeaveIfError(Math::ASin(result, yDividedBySqrtXYZ)); //was ACos

   125          if (result > 0)

   126            iLocationData.iElevation = (TInt32) (result * 1000 + 0.5);

   127          else

   128            iLocationData.iElevation = (TInt32) (result * 1000 - 0.5);

   130        }

   131 	   // else { we are exactly in origin and therefore elevation is undefined; let's use the previous elevation value instead }

   133        iLocationData.iRadius= (TInt32) (SqrtXYZ + 0.5);

   136       while(iLocationData.iElevation > PI)

   137        {

   138 	   iLocationData.iElevation = iLocationData.iElevation - TWO_PI;

   139        }

   141       if(iLocationData.iElevation > QUARTER_PI)

   142        {

   143 	   iLocationData.iElevation = iLocationData.iElevation - (iLocationData.iElevation - QUARTER_PI) * 2;

   144 	   iLocationData.iAzimuth = iLocationData.iAzimuth + PI;

   145        }

   147       while(iLocationData.iElevation < -PI)

   148        {

   149 	   iLocationData.iElevation = iLocationData.iElevation + TWO_PI;

   150        }

   151       if(iLocationData.iElevation < -QUARTER_PI)

   152        {

   153 	   iLocationData.iElevation = iLocationData.iElevation + (QUARTER_PI - iLocationData.iElevation) * 2;

   154 	   iLocationData.iAzimuth = iLocationData.iAzimuth + PI;

   155        }

   157       while (iLocationData.iAzimuth < 0)

   158 	    iLocationData.iAzimuth = iLocationData.iAzimuth + TWO_PI;

   159       while (iLocationData.iAzimuth > TWO_PI)

   160 	   iLocationData.iAzimuth = iLocationData.iAzimuth - TWO_PI;

   162 	}

   164 // -----------------------------------------------------------------------------

   165 // CLocation::SetLocationSphericalL

   166 // -----------------------------------------------------------------------------

   167 //

   168 EXPORT_C void CLocation::SetLocationSphericalL(

   169 	TInt32& aAzimuth, TInt32& aElevation, TInt32& aRadius  )

   170 	{

   172      while(aElevation > PI)

   173       {

   174          aElevation = aElevation - TWO_PI;

   175       }

   177      if(aElevation > QUARTER_PI)

   178        {

   179 	   aElevation = aElevation - (aElevation - QUARTER_PI) * 2;

   180 	   aAzimuth = aAzimuth + PI;

   181        }

   183      while(aElevation < -PI)

   184        {

   185 	   aElevation = aElevation + TWO_PI;

   186        }

   187      if(aElevation < -QUARTER_PI)

   188        {

   189 	   aElevation = aElevation + (QUARTER_PI - aElevation) * 2;

   190 	   aAzimuth = aAzimuth + PI;

   191        }

   193      while (aAzimuth < 0)

   194        aAzimuth = aAzimuth + TWO_PI;

   195      while (aAzimuth > TWO_PI)

   196 	   aAzimuth = aAzimuth - TWO_PI;

   199    	iLocationData.iAzimuth = aAzimuth;

   200 	iLocationData.iElevation = aElevation;

   201 	iLocationData.iRadius = aRadius;

   204     TReal elevation = aElevation / 1000.0; // conversion from milliradians to radians because Sin and Cos functions eat radians

   206     TReal elevationSin;

   207     TReal elevationCos;

   208     User::LeaveIfError( Math::Sin( elevationSin, elevation ) );

   209     User::LeaveIfError( Math::Cos( elevationCos, elevation ) );

   211     TReal azimuthSin;

   212     TReal azimuthCos;

   213     User::LeaveIfError( Math::Sin( azimuthSin, aAzimuth / 1000.0) );

   214     User::LeaveIfError( Math::Cos( azimuthCos, aAzimuth / 1000.0) );

   217 	iLocationData.iXCoordinate = (TInt32)(0.5 + aRadius * elevationCos * azimuthSin);

   218     iLocationData.iYCoordinate = (TInt32)(0.5 + aRadius * elevationSin);

   219     iLocationData.iZCoordinate = (TInt32)(0.5 - aRadius * elevationCos * azimuthCos);

   221 	}

   223 // -----------------------------------------------------------------------------

   224 // CLocation::DoEffectData

   225 // -----------------------------------------------------------------------------

   226 //

   227 EXPORT_C const TDesC8& CLocation::DoEffectData()

   228 	{

   229 #ifdef _DEBUG

   230     RDebug::Print(_L("CLocation::DoEffectData"));

   231 #endif

   232 	iDataPckgTo = iLocationData;

   233 	return iDataPckgTo;

   234 	}

   236 // -----------------------------------------------------------------------------

   237 // CLocation::SetEffectData

   238 // -----------------------------------------------------------------------------

   239 //

   240 EXPORT_C void CLocation::SetEffectData(

   241 	const TDesC8& aEffectDataBuffer )

   242 	{

   243 #ifdef _DEBUG

   244     RDebug::Print(_L("CLocation::SetEffectData"));

   245 #endif

   246 	TEfLocationDataPckg dataPckg;

   247 	dataPckg.Copy(aEffectDataBuffer);

   248 	iLocationData = dataPckg();

   249 	iEnabled = iLocationData.iEnabled;

   250 	iEnforced = iLocationData.iEnforced;

   251 	iHaveUpdateRights = iLocationData.iHaveUpdateRights;

   253 	}

   255 // ========================== OTHER EXPORTED FUNCTIONS =========================

   257 // End of File

author	sl@SLION-WIN7.fritz.box
	Fri, 15 Jun 2012 03:10:57 +0200
changeset 0	bde4ae8d615e
permissions	-rw-r--r--