1 /*

     2 * Copyright (c) 2008 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:  JNI implementation of Coordinates class

    15  *

    16 */

    17 

    18 

    19 // INTERNAL INCLUDES

    20 #include "javax_microedition_location_Coordinates.h"

    21 #include <lbsposition.h>

    22 #include "logger.h"

    23 

    24 LOCAL_C void CalculateBearingToL(TCoordinate* aSrc, TCoordinate* aDest,

    25                                  TReal32* aBearing)

    26 {

    27     TReal32 bearing;

    28     User::LeaveIfError(aSrc->BearingTo(*aDest, bearing));

    29     *aBearing = bearing;

    30 }

    31 

    32 /*

    33  * Class:     javax_microedition_location_Coordinates

    34  * Method:    _azimuthTo

    35  * Signature: (IDDDD)F

    36  */

    37 JNIEXPORT jfloat JNICALL Java_javax_microedition_location_Coordinates__1azimuthTo(

    38     JNIEnv* /*aJniEnv*/,

    39     jobject /*aPeer*/,

    40     jdouble aSrcLatitude,

    41     jdouble aSrcLongitude,

    42     jdouble aDestLatitude,

    43     jdouble aDestLongitude)

    44 {

    45     JELOG2(EJavaLocation);

    46 

    47     TReal32 azimuth = 0.0f;

    48 

    49     TCoordinate src(aSrcLatitude, aSrcLongitude);

    50     TCoordinate dest(aDestLatitude, aDestLongitude);

    51 

    52     TRAPD(error, CalculateBearingToL(

    53               &src,

    54               &dest,

    55               &azimuth));

    56 

    57     if (error != KErrNone)

    58     {

    59         ELOG1(EJavaLocation,

    60               "Java_javax_microedition_location_Coordinates__1azimuthTo - error %d", error);

    61     }

    62 

    63     return azimuth;

    64 }

    65 

    66 LOCAL_C void CalculateDistanceL(TCoordinate* aSrc, TCoordinate* aDest,

    67                                 TReal32* aDistance)

    68 {

    69     TReal32 distance;

    70     User::LeaveIfError(aSrc->Distance(*aDest, distance));

    71     *aDistance = distance;

    72 }

    73 

    74 /*

    75  * Class:     javax_microedition_location_Coordinates

    76  * Method:    _distance

    77  * Signature: (IDDDD)F

    78  */

    79 JNIEXPORT jfloat JNICALL Java_javax_microedition_location_Coordinates__1distance(

    80     JNIEnv* /*aJniEnv*/,

    81     jobject /*aPeer*/,

    82     jdouble aSrcLatitude,

    83     jdouble aSrcLongitude,

    84     jdouble aDestLatitude,

    85     jdouble aDestLongitude)

    86 {

    87     JELOG2(EJavaLocation);

    88 

    89     TReal32 distance = -1.0f;

    90 

    91     TCoordinate src(aSrcLatitude, aSrcLongitude);

    92     TCoordinate dest(aDestLatitude, aDestLongitude);

    93 

    94     //   TInt error = src->Distance( *dest,distance);

    95     TRAPD(error, CalculateDistanceL(

    96               &src,

    97               &dest,

    98               &distance));

    99 

   100     if (error != KErrNone)

   101     {

   102         ELOG1(EJavaLocation,

   103               "Java_javax_microedition_location_Coordinates__1distance - error %d", error);

   104     }

   105 

   106     return distance;

   107 }

   108 

   109 // End of file